Re: Linux 6.1.50

From: Greg Kroah-Hartman
Date: Wed Aug 30 2023 - 15:30:25 EST

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diff --git a/MAINTAINERS b/MAINTAINERS
index 379387e20a96..07a9c274c0e2 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -6027,7 +6027,7 @@ S: Supported
F: Documentation/networking/devlink
F: include/net/devlink.h
F: include/uapi/linux/devlink.h
-F: net/core/devlink.c
+F: net/devlink/

DH ELECTRONICS IMX6 DHCOM BOARD SUPPORT
M: Christoph Niedermaier <cniedermaier@xxxxxxxxxxxxxxxxxx>
diff --git a/Makefile b/Makefile
index 61ebd54aba89..e5e1fdeef8bf 100644
--- a/Makefile
+++ b/Makefile
@@ -1,7 +1,7 @@
# SPDX-License-Identifier: GPL-2.0
VERSION = 6
PATCHLEVEL = 1
-SUBLEVEL = 49
+SUBLEVEL = 50
EXTRAVERSION =
NAME = Curry Ramen

diff --git a/arch/mips/include/asm/cpu-features.h b/arch/mips/include/asm/cpu-features.h
index c0983130a44c..e0a4da4cfd8b 100644
--- a/arch/mips/include/asm/cpu-features.h
+++ b/arch/mips/include/asm/cpu-features.h
@@ -121,7 +121,24 @@
#define cpu_has_4k_cache __isa_ge_or_opt(1, MIPS_CPU_4K_CACHE)
#endif
#ifndef cpu_has_octeon_cache
-#define cpu_has_octeon_cache 0
+#define cpu_has_octeon_cache \
+({ \
+ int __res; \
+ \
+ switch (boot_cpu_type()) { \
+ case CPU_CAVIUM_OCTEON: \
+ case CPU_CAVIUM_OCTEON_PLUS: \
+ case CPU_CAVIUM_OCTEON2: \
+ case CPU_CAVIUM_OCTEON3: \
+ __res = 1; \
+ break; \
+ \
+ default: \
+ __res = 0; \
+ } \
+ \
+ __res; \
+})
#endif
/* Don't override `cpu_has_fpu' to 1 or the "nofpu" option won't work. */
#ifndef cpu_has_fpu
@@ -351,7 +368,7 @@
({ \
int __res; \
\
- switch (current_cpu_type()) { \
+ switch (boot_cpu_type()) { \
case CPU_M14KC: \
case CPU_74K: \
case CPU_1074K: \
diff --git a/arch/riscv/Kconfig b/arch/riscv/Kconfig
index 6bf8dc0b8f93..d702359f8ab5 100644
--- a/arch/riscv/Kconfig
+++ b/arch/riscv/Kconfig
@@ -447,24 +447,30 @@ config TOOLCHAIN_HAS_ZIHINTPAUSE
config TOOLCHAIN_NEEDS_EXPLICIT_ZICSR_ZIFENCEI
def_bool y
# https://sourceware.org/git/?p=binutils-gdb.git;a=commit;h=aed44286efa8ae8717a77d94b51ac3614e2ca6dc
- depends on AS_IS_GNU && AS_VERSION >= 23800
+ # https://gcc.gnu.org/git/?p=gcc.git;a=commit;h=98416dbb0a62579d4a7a4a76bab51b5b52fec2cd
+ depends on AS_IS_GNU && AS_VERSION >= 23600
help
- Newer binutils versions default to ISA spec version 20191213 which
- moves some instructions from the I extension to the Zicsr and Zifencei
- extensions.
+ Binutils-2.38 and GCC-12.1.0 bumped the default ISA spec to the newer
+ 20191213 version, which moves some instructions from the I extension to
+ the Zicsr and Zifencei extensions. This requires explicitly specifying
+ Zicsr and Zifencei when binutils >= 2.38 or GCC >= 12.1.0. Zicsr
+ and Zifencei are supported in binutils from version 2.36 onwards.
+ To make life easier, and avoid forcing toolchains that default to a
+ newer ISA spec to version 2.2, relax the check to binutils >= 2.36.
+ For clang < 17 or GCC < 11.3.0, for which this is not possible or need
+ special treatment, this is dealt with in TOOLCHAIN_NEEDS_OLD_ISA_SPEC.

config TOOLCHAIN_NEEDS_OLD_ISA_SPEC
def_bool y
depends on TOOLCHAIN_NEEDS_EXPLICIT_ZICSR_ZIFENCEI
# https://github.com/llvm/llvm-project/commit/22e199e6afb1263c943c0c0d4498694e15bf8a16
- depends on CC_IS_CLANG && CLANG_VERSION < 170000
+ # https://gcc.gnu.org/git/?p=gcc.git;a=commit;h=d29f5d6ab513c52fd872f532c492e35ae9fd6671
+ depends on (CC_IS_CLANG && CLANG_VERSION < 170000) || (CC_IS_GCC && GCC_VERSION < 110300)
help
- Certain versions of clang do not support zicsr and zifencei via -march
- but newer versions of binutils require it for the reasons noted in the
- help text of CONFIG_TOOLCHAIN_NEEDS_EXPLICIT_ZICSR_ZIFENCEI. This
- option causes an older ISA spec compatible with these older versions
- of clang to be passed to GAS, which has the same result as passing zicsr
- and zifencei to -march.
+ Certain versions of clang and GCC do not support zicsr and zifencei via
+ -march. This option causes an older ISA spec compatible with these older
+ versions of clang and GCC to be passed to GAS, which has the same result
+ as passing zicsr and zifencei to -march.

config FPU
bool "FPU support"
diff --git a/arch/riscv/kernel/compat_vdso/Makefile b/arch/riscv/kernel/compat_vdso/Makefile
index 7f34f3c7c882..737c0857b14c 100644
--- a/arch/riscv/kernel/compat_vdso/Makefile
+++ b/arch/riscv/kernel/compat_vdso/Makefile
@@ -11,7 +11,13 @@ compat_vdso-syms += flush_icache
COMPAT_CC := $(CC)
COMPAT_LD := $(LD)

-COMPAT_CC_FLAGS := -march=rv32g -mabi=ilp32
+# binutils 2.35 does not support the zifencei extension, but in the ISA
+# spec 20191213, G stands for IMAFD_ZICSR_ZIFENCEI.
+ifdef CONFIG_TOOLCHAIN_NEEDS_EXPLICIT_ZICSR_ZIFENCEI
+ COMPAT_CC_FLAGS := -march=rv32g -mabi=ilp32
+else
+ COMPAT_CC_FLAGS := -march=rv32imafd -mabi=ilp32
+endif
COMPAT_LD_FLAGS := -melf32lriscv

# Disable attributes, as they're useless and break the build.
diff --git a/arch/x86/kernel/fpu/context.h b/arch/x86/kernel/fpu/context.h
index 9fcfa5c4dad7..71b5059e092a 100644
--- a/arch/x86/kernel/fpu/context.h
+++ b/arch/x86/kernel/fpu/context.h
@@ -19,8 +19,7 @@
* FPU state for a task MUST let the rest of the kernel know that the
* FPU registers are no longer valid for this task.
*
- * Either one of these invalidation functions is enough. Invalidate
- * a resource you control: CPU if using the CPU for something else
+ * Invalidate a resource you control: CPU if using the CPU for something else
* (with preemption disabled), FPU for the current task, or a task that
* is prevented from running by the current task.
*/
diff --git a/arch/x86/kernel/fpu/core.c b/arch/x86/kernel/fpu/core.c
index caf33486dc5e..a083f9ac9e4f 100644
--- a/arch/x86/kernel/fpu/core.c
+++ b/arch/x86/kernel/fpu/core.c
@@ -679,7 +679,7 @@ static void fpu_reset_fpregs(void)
struct fpu *fpu = &current->thread.fpu;

fpregs_lock();
- fpu__drop(fpu);
+ __fpu_invalidate_fpregs_state(fpu);
/*
* This does not change the actual hardware registers. It just
* resets the memory image and sets TIF_NEED_FPU_LOAD so a
diff --git a/arch/x86/kernel/fpu/xstate.c b/arch/x86/kernel/fpu/xstate.c
index 0bab497c9436..1afbc4866b10 100644
--- a/arch/x86/kernel/fpu/xstate.c
+++ b/arch/x86/kernel/fpu/xstate.c
@@ -882,6 +882,13 @@ void __init fpu__init_system_xstate(unsigned int legacy_size)
goto out_disable;
}

+ /*
+ * CPU capabilities initialization runs before FPU init. So
+ * X86_FEATURE_OSXSAVE is not set. Now that XSAVE is completely
+ * functional, set the feature bit so depending code works.
+ */
+ setup_force_cpu_cap(X86_FEATURE_OSXSAVE);
+
print_xstate_offset_size();
pr_info("x86/fpu: Enabled xstate features 0x%llx, context size is %d bytes, using '%s' format.\n",
fpu_kernel_cfg.max_features,
diff --git a/arch/x86/kvm/mmu/mmu.c b/arch/x86/kvm/mmu/mmu.c
index 230108a90cf3..beca03556379 100644
--- a/arch/x86/kvm/mmu/mmu.c
+++ b/arch/x86/kvm/mmu/mmu.c
@@ -4212,7 +4212,8 @@ static int kvm_faultin_pfn(struct kvm_vcpu *vcpu, struct kvm_page_fault *fault)
* root was invalidated by a memslot update or a relevant mmu_notifier fired.
*/
static bool is_page_fault_stale(struct kvm_vcpu *vcpu,
- struct kvm_page_fault *fault, int mmu_seq)
+ struct kvm_page_fault *fault,
+ unsigned long mmu_seq)
{
struct kvm_mmu_page *sp = to_shadow_page(vcpu->arch.mmu->root.hpa);

diff --git a/arch/x86/kvm/mmu/tdp_mmu.c b/arch/x86/kvm/mmu/tdp_mmu.c
index 672f0432d777..70945f00ec41 100644
--- a/arch/x86/kvm/mmu/tdp_mmu.c
+++ b/arch/x86/kvm/mmu/tdp_mmu.c
@@ -51,7 +51,17 @@ void kvm_mmu_uninit_tdp_mmu(struct kvm *kvm)
if (!kvm->arch.tdp_mmu_enabled)
return;

- /* Also waits for any queued work items. */
+ /*
+ * Invalidate all roots, which besides the obvious, schedules all roots
+ * for zapping and thus puts the TDP MMU's reference to each root, i.e.
+ * ultimately frees all roots.
+ */
+ kvm_tdp_mmu_invalidate_all_roots(kvm);
+
+ /*
+ * Destroying a workqueue also first flushes the workqueue, i.e. no
+ * need to invoke kvm_tdp_mmu_zap_invalidated_roots().
+ */
destroy_workqueue(kvm->arch.tdp_mmu_zap_wq);

WARN_ON(!list_empty(&kvm->arch.tdp_mmu_pages));
@@ -127,16 +137,6 @@ static void tdp_mmu_schedule_zap_root(struct kvm *kvm, struct kvm_mmu_page *root
queue_work(kvm->arch.tdp_mmu_zap_wq, &root->tdp_mmu_async_work);
}

-static inline bool kvm_tdp_root_mark_invalid(struct kvm_mmu_page *page)
-{
- union kvm_mmu_page_role role = page->role;
- role.invalid = true;
-
- /* No need to use cmpxchg, only the invalid bit can change. */
- role.word = xchg(&page->role.word, role.word);
- return role.invalid;
-}
-
void kvm_tdp_mmu_put_root(struct kvm *kvm, struct kvm_mmu_page *root,
bool shared)
{
@@ -145,45 +145,12 @@ void kvm_tdp_mmu_put_root(struct kvm *kvm, struct kvm_mmu_page *root,
if (!refcount_dec_and_test(&root->tdp_mmu_root_count))
return;

- WARN_ON(!root->tdp_mmu_page);
-
/*
- * The root now has refcount=0. It is valid, but readers already
- * cannot acquire a reference to it because kvm_tdp_mmu_get_root()
- * rejects it. This remains true for the rest of the execution
- * of this function, because readers visit valid roots only
- * (except for tdp_mmu_zap_root_work(), which however
- * does not acquire any reference itself).
- *
- * Even though there are flows that need to visit all roots for
- * correctness, they all take mmu_lock for write, so they cannot yet
- * run concurrently. The same is true after kvm_tdp_root_mark_invalid,
- * since the root still has refcount=0.
- *
- * However, tdp_mmu_zap_root can yield, and writers do not expect to
- * see refcount=0 (see for example kvm_tdp_mmu_invalidate_all_roots()).
- * So the root temporarily gets an extra reference, going to refcount=1
- * while staying invalid. Readers still cannot acquire any reference;
- * but writers are now allowed to run if tdp_mmu_zap_root yields and
- * they might take an extra reference if they themselves yield.
- * Therefore, when the reference is given back by the worker,
- * there is no guarantee that the refcount is still 1. If not, whoever
- * puts the last reference will free the page, but they will not have to
- * zap the root because a root cannot go from invalid to valid.
+ * The TDP MMU itself holds a reference to each root until the root is
+ * explicitly invalidated, i.e. the final reference should be never be
+ * put for a valid root.
*/
- if (!kvm_tdp_root_mark_invalid(root)) {
- refcount_set(&root->tdp_mmu_root_count, 1);
-
- /*
- * Zapping the root in a worker is not just "nice to have";
- * it is required because kvm_tdp_mmu_invalidate_all_roots()
- * skips already-invalid roots. If kvm_tdp_mmu_put_root() did
- * not add the root to the workqueue, kvm_tdp_mmu_zap_all_fast()
- * might return with some roots not zapped yet.
- */
- tdp_mmu_schedule_zap_root(kvm, root);
- return;
- }
+ KVM_BUG_ON(!is_tdp_mmu_page(root) || !root->role.invalid, kvm);

spin_lock(&kvm->arch.tdp_mmu_pages_lock);
list_del_rcu(&root->link);
@@ -329,7 +296,14 @@ hpa_t kvm_tdp_mmu_get_vcpu_root_hpa(struct kvm_vcpu *vcpu)
root = tdp_mmu_alloc_sp(vcpu);
tdp_mmu_init_sp(root, NULL, 0, role);

- refcount_set(&root->tdp_mmu_root_count, 1);
+ /*
+ * TDP MMU roots are kept until they are explicitly invalidated, either
+ * by a memslot update or by the destruction of the VM. Initialize the
+ * refcount to two; one reference for the vCPU, and one reference for
+ * the TDP MMU itself, which is held until the root is invalidated and
+ * is ultimately put by tdp_mmu_zap_root_work().
+ */
+ refcount_set(&root->tdp_mmu_root_count, 2);

spin_lock(&kvm->arch.tdp_mmu_pages_lock);
list_add_rcu(&root->link, &kvm->arch.tdp_mmu_roots);
@@ -1027,32 +1001,49 @@ void kvm_tdp_mmu_zap_invalidated_roots(struct kvm *kvm)
/*
* Mark each TDP MMU root as invalid to prevent vCPUs from reusing a root that
* is about to be zapped, e.g. in response to a memslots update. The actual
- * zapping is performed asynchronously, so a reference is taken on all roots.
- * Using a separate workqueue makes it easy to ensure that the destruction is
- * performed before the "fast zap" completes, without keeping a separate list
- * of invalidated roots; the list is effectively the list of work items in
- * the workqueue.
- *
- * Get a reference even if the root is already invalid, the asynchronous worker
- * assumes it was gifted a reference to the root it processes. Because mmu_lock
- * is held for write, it should be impossible to observe a root with zero refcount,
- * i.e. the list of roots cannot be stale.
+ * zapping is performed asynchronously. Using a separate workqueue makes it
+ * easy to ensure that the destruction is performed before the "fast zap"
+ * completes, without keeping a separate list of invalidated roots; the list is
+ * effectively the list of work items in the workqueue.
*
- * This has essentially the same effect for the TDP MMU
- * as updating mmu_valid_gen does for the shadow MMU.
+ * Note, the asynchronous worker is gifted the TDP MMU's reference.
+ * See kvm_tdp_mmu_get_vcpu_root_hpa().
*/
void kvm_tdp_mmu_invalidate_all_roots(struct kvm *kvm)
{
struct kvm_mmu_page *root;

- lockdep_assert_held_write(&kvm->mmu_lock);
- list_for_each_entry(root, &kvm->arch.tdp_mmu_roots, link) {
- if (!root->role.invalid &&
- !WARN_ON_ONCE(!kvm_tdp_mmu_get_root(root))) {
+ /*
+ * mmu_lock must be held for write to ensure that a root doesn't become
+ * invalid while there are active readers (invalidating a root while
+ * there are active readers may or may not be problematic in practice,
+ * but it's uncharted territory and not supported).
+ *
+ * Waive the assertion if there are no users of @kvm, i.e. the VM is
+ * being destroyed after all references have been put, or if no vCPUs
+ * have been created (which means there are no roots), i.e. the VM is
+ * being destroyed in an error path of KVM_CREATE_VM.
+ */
+ if (IS_ENABLED(CONFIG_PROVE_LOCKING) &&
+ refcount_read(&kvm->users_count) && kvm->created_vcpus)
+ lockdep_assert_held_write(&kvm->mmu_lock);
+
+ /*
+ * As above, mmu_lock isn't held when destroying the VM! There can't
+ * be other references to @kvm, i.e. nothing else can invalidate roots
+ * or be consuming roots, but walking the list of roots does need to be
+ * guarded against roots being deleted by the asynchronous zap worker.
+ */
+ rcu_read_lock();
+
+ list_for_each_entry_rcu(root, &kvm->arch.tdp_mmu_roots, link) {
+ if (!root->role.invalid) {
root->role.invalid = true;
tdp_mmu_schedule_zap_root(kvm, root);
}
}
+
+ rcu_read_unlock();
}

/*
diff --git a/drivers/block/ublk_drv.c b/drivers/block/ublk_drv.c
index 4459cfbdbcb1..c2f0f74193f0 100644
--- a/drivers/block/ublk_drv.c
+++ b/drivers/block/ublk_drv.c
@@ -1223,9 +1223,6 @@ static int __ublk_ch_uring_cmd(struct io_uring_cmd *cmd,
__func__, cmd->cmd_op, ub_cmd->q_id, tag,
ub_cmd->result);

- if (!(issue_flags & IO_URING_F_SQE128))
- goto out;
-
if (ub_cmd->q_id >= ub->dev_info.nr_hw_queues)
goto out;

diff --git a/drivers/clk/clk-devres.c b/drivers/clk/clk-devres.c
index 4fb4fd4b06bd..737aa70e2cb3 100644
--- a/drivers/clk/clk-devres.c
+++ b/drivers/clk/clk-devres.c
@@ -205,18 +205,19 @@ EXPORT_SYMBOL(devm_clk_put);
struct clk *devm_get_clk_from_child(struct device *dev,
struct device_node *np, const char *con_id)
{
- struct clk **ptr, *clk;
+ struct devm_clk_state *state;
+ struct clk *clk;

- ptr = devres_alloc(devm_clk_release, sizeof(*ptr), GFP_KERNEL);
- if (!ptr)
+ state = devres_alloc(devm_clk_release, sizeof(*state), GFP_KERNEL);
+ if (!state)
return ERR_PTR(-ENOMEM);

clk = of_clk_get_by_name(np, con_id);
if (!IS_ERR(clk)) {
- *ptr = clk;
- devres_add(dev, ptr);
+ state->clk = clk;
+ devres_add(dev, state);
} else {
- devres_free(ptr);
+ devres_free(state);
}

return clk;
diff --git a/drivers/dma-buf/sw_sync.c b/drivers/dma-buf/sw_sync.c
index 348b3a9170fa..7f5ed1aa7a9f 100644
--- a/drivers/dma-buf/sw_sync.c
+++ b/drivers/dma-buf/sw_sync.c
@@ -191,6 +191,7 @@ static const struct dma_fence_ops timeline_fence_ops = {
*/
static void sync_timeline_signal(struct sync_timeline *obj, unsigned int inc)
{
+ LIST_HEAD(signalled);
struct sync_pt *pt, *next;

trace_sync_timeline(obj);
@@ -203,21 +204,20 @@ static void sync_timeline_signal(struct sync_timeline *obj, unsigned int inc)
if (!timeline_fence_signaled(&pt->base))
break;

- list_del_init(&pt->link);
+ dma_fence_get(&pt->base);
+
+ list_move_tail(&pt->link, &signalled);
rb_erase(&pt->node, &obj->pt_tree);

- /*
- * A signal callback may release the last reference to this
- * fence, causing it to be freed. That operation has to be
- * last to avoid a use after free inside this loop, and must
- * be after we remove the fence from the timeline in order to
- * prevent deadlocking on timeline->lock inside
- * timeline_fence_release().
- */
dma_fence_signal_locked(&pt->base);
}

spin_unlock_irq(&obj->lock);
+
+ list_for_each_entry_safe(pt, next, &signalled, link) {
+ list_del_init(&pt->link);
+ dma_fence_put(&pt->base);
+ }
}

/**
diff --git a/drivers/gpio/gpio-sim.c b/drivers/gpio/gpio-sim.c
index fef12e57b1f1..b352775e5e0b 100644
--- a/drivers/gpio/gpio-sim.c
+++ b/drivers/gpio/gpio-sim.c
@@ -290,6 +290,15 @@ static void gpio_sim_mutex_destroy(void *data)
mutex_destroy(lock);
}

+static void gpio_sim_dispose_mappings(void *data)
+{
+ struct gpio_sim_chip *chip = data;
+ unsigned int i;
+
+ for (i = 0; i < chip->gc.ngpio; i++)
+ irq_dispose_mapping(irq_find_mapping(chip->irq_sim, i));
+}
+
static void gpio_sim_sysfs_remove(void *data)
{
struct gpio_sim_chip *chip = data;
@@ -398,10 +407,14 @@ static int gpio_sim_add_bank(struct fwnode_handle *swnode, struct device *dev)
if (!chip->pull_map)
return -ENOMEM;

- chip->irq_sim = devm_irq_domain_create_sim(dev, NULL, num_lines);
+ chip->irq_sim = devm_irq_domain_create_sim(dev, swnode, num_lines);
if (IS_ERR(chip->irq_sim))
return PTR_ERR(chip->irq_sim);

+ ret = devm_add_action_or_reset(dev, gpio_sim_dispose_mappings, chip);
+ if (ret)
+ return ret;
+
mutex_init(&chip->lock);
ret = devm_add_action_or_reset(dev, gpio_sim_mutex_destroy,
&chip->lock);
diff --git a/drivers/gpu/drm/arm/hdlcd_drv.c b/drivers/gpu/drm/arm/hdlcd_drv.c
index a032003c340c..d6ea47873627 100644
--- a/drivers/gpu/drm/arm/hdlcd_drv.c
+++ b/drivers/gpu/drm/arm/hdlcd_drv.c
@@ -290,7 +290,7 @@ static int hdlcd_drm_bind(struct device *dev)
*/
if (hdlcd_read(hdlcd, HDLCD_REG_COMMAND)) {
hdlcd_write(hdlcd, HDLCD_REG_COMMAND, 0);
- drm_aperture_remove_framebuffers(false, &hdlcd_driver);
+ drm_aperture_remove_framebuffers(&hdlcd_driver);
}

drm_mode_config_reset(drm);
diff --git a/drivers/gpu/drm/armada/armada_drv.c b/drivers/gpu/drm/armada/armada_drv.c
index 142668cd6d7c..688ba358f531 100644
--- a/drivers/gpu/drm/armada/armada_drv.c
+++ b/drivers/gpu/drm/armada/armada_drv.c
@@ -95,7 +95,7 @@ static int armada_drm_bind(struct device *dev)
}

/* Remove early framebuffers */
- ret = drm_aperture_remove_framebuffers(false, &armada_drm_driver);
+ ret = drm_aperture_remove_framebuffers(&armada_drm_driver);
if (ret) {
dev_err(dev, "[" DRM_NAME ":%s] can't kick out simple-fb: %d\n",
__func__, ret);
diff --git a/drivers/gpu/drm/ast/ast_drv.c b/drivers/gpu/drm/ast/ast_drv.c
index b9392f31e629..800471f2a203 100644
--- a/drivers/gpu/drm/ast/ast_drv.c
+++ b/drivers/gpu/drm/ast/ast_drv.c
@@ -89,27 +89,13 @@ static const struct pci_device_id ast_pciidlist[] = {

MODULE_DEVICE_TABLE(pci, ast_pciidlist);

-static int ast_remove_conflicting_framebuffers(struct pci_dev *pdev)
-{
- bool primary = false;
- resource_size_t base, size;
-
- base = pci_resource_start(pdev, 0);
- size = pci_resource_len(pdev, 0);
-#ifdef CONFIG_X86
- primary = pdev->resource[PCI_ROM_RESOURCE].flags & IORESOURCE_ROM_SHADOW;
-#endif
-
- return drm_aperture_remove_conflicting_framebuffers(base, size, primary, &ast_driver);
-}
-
static int ast_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
{
struct ast_private *ast;
struct drm_device *dev;
int ret;

- ret = ast_remove_conflicting_framebuffers(pdev);
+ ret = drm_aperture_remove_conflicting_pci_framebuffers(pdev, &ast_driver);
if (ret)
return ret;

diff --git a/drivers/gpu/drm/drm_aperture.c b/drivers/gpu/drm/drm_aperture.c
index 3b8fdeeafd53..697cffbfd603 100644
--- a/drivers/gpu/drm/drm_aperture.c
+++ b/drivers/gpu/drm/drm_aperture.c
@@ -32,17 +32,13 @@
*
* static int remove_conflicting_framebuffers(struct pci_dev *pdev)
* {
- * bool primary = false;
* resource_size_t base, size;
* int ret;
*
* base = pci_resource_start(pdev, 0);
* size = pci_resource_len(pdev, 0);
- * #ifdef CONFIG_X86
- * primary = pdev->resource[PCI_ROM_RESOURCE].flags & IORESOURCE_ROM_SHADOW;
- * #endif
*
- * return drm_aperture_remove_conflicting_framebuffers(base, size, primary,
+ * return drm_aperture_remove_conflicting_framebuffers(base, size,
* &example_driver);
* }
*
@@ -161,7 +157,6 @@ EXPORT_SYMBOL(devm_aperture_acquire_from_firmware);
* drm_aperture_remove_conflicting_framebuffers - remove existing framebuffers in the given range
* @base: the aperture's base address in physical memory
* @size: aperture size in bytes
- * @primary: also kick vga16fb if present
* @req_driver: requesting DRM driver
*
* This function removes graphics device drivers which use the memory range described by
@@ -171,9 +166,9 @@ EXPORT_SYMBOL(devm_aperture_acquire_from_firmware);
* 0 on success, or a negative errno code otherwise
*/
int drm_aperture_remove_conflicting_framebuffers(resource_size_t base, resource_size_t size,
- bool primary, const struct drm_driver *req_driver)
+ const struct drm_driver *req_driver)
{
- return aperture_remove_conflicting_devices(base, size, primary, req_driver->name);
+ return aperture_remove_conflicting_devices(base, size, false, req_driver->name);
}
EXPORT_SYMBOL(drm_aperture_remove_conflicting_framebuffers);

diff --git a/drivers/gpu/drm/gma500/psb_drv.c b/drivers/gpu/drm/gma500/psb_drv.c
index cd9c73f5a64a..738eb558a97e 100644
--- a/drivers/gpu/drm/gma500/psb_drv.c
+++ b/drivers/gpu/drm/gma500/psb_drv.c
@@ -424,12 +424,17 @@ static int psb_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)

/*
* We cannot yet easily find the framebuffer's location in memory. So
- * remove all framebuffers here.
+ * remove all framebuffers here. Note that we still want the pci special
+ * handling to kick out vgacon.
*
* TODO: Refactor psb_driver_load() to map vdc_reg earlier. Then we
* might be able to read the framebuffer range from the device.
*/
- ret = drm_aperture_remove_framebuffers(true, &driver);
+ ret = drm_aperture_remove_framebuffers(&driver);
+ if (ret)
+ return ret;
+
+ ret = drm_aperture_remove_conflicting_pci_framebuffers(pdev, &driver);
if (ret)
return ret;

diff --git a/drivers/gpu/drm/hyperv/hyperv_drm_drv.c b/drivers/gpu/drm/hyperv/hyperv_drm_drv.c
index ca127ff797f7..29ee0814bccc 100644
--- a/drivers/gpu/drm/hyperv/hyperv_drm_drv.c
+++ b/drivers/gpu/drm/hyperv/hyperv_drm_drv.c
@@ -74,7 +74,6 @@ static int hyperv_setup_vram(struct hyperv_drm_device *hv,

drm_aperture_remove_conflicting_framebuffers(screen_info.lfb_base,
screen_info.lfb_size,
- false,
&hyperv_driver);

hv->fb_size = (unsigned long)hv->mmio_megabytes * 1024 * 1024;
diff --git a/drivers/gpu/drm/i915/gt/gen8_engine_cs.c b/drivers/gpu/drm/i915/gt/gen8_engine_cs.c
index b2838732ac93..cc8468536871 100644
--- a/drivers/gpu/drm/i915/gt/gen8_engine_cs.c
+++ b/drivers/gpu/drm/i915/gt/gen8_engine_cs.c
@@ -165,14 +165,60 @@ static u32 preparser_disable(bool state)
return MI_ARB_CHECK | 1 << 8 | state;
}

-u32 *gen12_emit_aux_table_inv(struct intel_gt *gt, u32 *cs, const i915_reg_t inv_reg)
+static i915_reg_t gen12_get_aux_inv_reg(struct intel_engine_cs *engine)
{
- u32 gsi_offset = gt->uncore->gsi_offset;
+ switch (engine->id) {
+ case RCS0:
+ return GEN12_CCS_AUX_INV;
+ case BCS0:
+ return GEN12_BCS0_AUX_INV;
+ case VCS0:
+ return GEN12_VD0_AUX_INV;
+ case VCS2:
+ return GEN12_VD2_AUX_INV;
+ case VECS0:
+ return GEN12_VE0_AUX_INV;
+ case CCS0:
+ return GEN12_CCS0_AUX_INV;
+ default:
+ return INVALID_MMIO_REG;
+ }
+}
+
+static bool gen12_needs_ccs_aux_inv(struct intel_engine_cs *engine)
+{
+ i915_reg_t reg = gen12_get_aux_inv_reg(engine);
+
+ if (IS_PONTEVECCHIO(engine->i915))
+ return false;
+
+ /*
+ * So far platforms supported by i915 having flat ccs do not require
+ * AUX invalidation. Check also whether the engine requires it.
+ */
+ return i915_mmio_reg_valid(reg) && !HAS_FLAT_CCS(engine->i915);
+}
+
+u32 *gen12_emit_aux_table_inv(struct intel_engine_cs *engine, u32 *cs)
+{
+ i915_reg_t inv_reg = gen12_get_aux_inv_reg(engine);
+ u32 gsi_offset = engine->gt->uncore->gsi_offset;
+
+ if (!gen12_needs_ccs_aux_inv(engine))
+ return cs;

*cs++ = MI_LOAD_REGISTER_IMM(1) | MI_LRI_MMIO_REMAP_EN;
*cs++ = i915_mmio_reg_offset(inv_reg) + gsi_offset;
*cs++ = AUX_INV;
- *cs++ = MI_NOOP;
+
+ *cs++ = MI_SEMAPHORE_WAIT_TOKEN |
+ MI_SEMAPHORE_REGISTER_POLL |
+ MI_SEMAPHORE_POLL |
+ MI_SEMAPHORE_SAD_EQ_SDD;
+ *cs++ = 0;
+ *cs++ = i915_mmio_reg_offset(inv_reg) + gsi_offset;
+ *cs++ = 0;
+ *cs++ = 0;

return cs;
}
@@ -181,7 +227,11 @@ int gen12_emit_flush_rcs(struct i915_request *rq, u32 mode)
{
struct intel_engine_cs *engine = rq->engine;

- if (mode & EMIT_FLUSH) {
+ /*
+ * On Aux CCS platforms the invalidation of the Aux
+ * table requires quiescing memory traffic beforehand
+ */
+ if (mode & EMIT_FLUSH || gen12_needs_ccs_aux_inv(engine)) {
u32 flags = 0;
u32 *cs;

@@ -236,10 +286,9 @@ int gen12_emit_flush_rcs(struct i915_request *rq, u32 mode)
else if (engine->class == COMPUTE_CLASS)
flags &= ~PIPE_CONTROL_3D_ENGINE_FLAGS;

- if (!HAS_FLAT_CCS(rq->engine->i915))
- count = 8 + 4;
- else
- count = 8;
+ count = 8;
+ if (gen12_needs_ccs_aux_inv(rq->engine))
+ count += 8;

cs = intel_ring_begin(rq, count);
if (IS_ERR(cs))
@@ -254,11 +303,7 @@ int gen12_emit_flush_rcs(struct i915_request *rq, u32 mode)

cs = gen8_emit_pipe_control(cs, flags, LRC_PPHWSP_SCRATCH_ADDR);

- if (!HAS_FLAT_CCS(rq->engine->i915)) {
- /* hsdes: 1809175790 */
- cs = gen12_emit_aux_table_inv(rq->engine->gt, cs,
- GEN12_CCS_AUX_INV);
- }
+ cs = gen12_emit_aux_table_inv(engine, cs);

*cs++ = preparser_disable(false);
intel_ring_advance(rq, cs);
@@ -269,21 +314,14 @@ int gen12_emit_flush_rcs(struct i915_request *rq, u32 mode)

int gen12_emit_flush_xcs(struct i915_request *rq, u32 mode)
{
- intel_engine_mask_t aux_inv = 0;
- u32 cmd, *cs;
+ u32 cmd = 4;
+ u32 *cs;

- cmd = 4;
if (mode & EMIT_INVALIDATE) {
cmd += 2;

- if (!HAS_FLAT_CCS(rq->engine->i915) &&
- (rq->engine->class == VIDEO_DECODE_CLASS ||
- rq->engine->class == VIDEO_ENHANCEMENT_CLASS)) {
- aux_inv = rq->engine->mask &
- ~GENMASK(_BCS(I915_MAX_BCS - 1), BCS0);
- if (aux_inv)
- cmd += 4;
- }
+ if (gen12_needs_ccs_aux_inv(rq->engine))
+ cmd += 8;
}

cs = intel_ring_begin(rq, cmd);
@@ -314,14 +352,7 @@ int gen12_emit_flush_xcs(struct i915_request *rq, u32 mode)
*cs++ = 0; /* upper addr */
*cs++ = 0; /* value */

- if (aux_inv) { /* hsdes: 1809175790 */
- if (rq->engine->class == VIDEO_DECODE_CLASS)
- cs = gen12_emit_aux_table_inv(rq->engine->gt,
- cs, GEN12_VD0_AUX_INV);
- else
- cs = gen12_emit_aux_table_inv(rq->engine->gt,
- cs, GEN12_VE0_AUX_INV);
- }
+ cs = gen12_emit_aux_table_inv(rq->engine, cs);

if (mode & EMIT_INVALIDATE)
*cs++ = preparser_disable(false);
diff --git a/drivers/gpu/drm/i915/gt/gen8_engine_cs.h b/drivers/gpu/drm/i915/gt/gen8_engine_cs.h
index e4d24c811dd6..651eb786e930 100644
--- a/drivers/gpu/drm/i915/gt/gen8_engine_cs.h
+++ b/drivers/gpu/drm/i915/gt/gen8_engine_cs.h
@@ -13,6 +13,7 @@
#include "intel_gt_regs.h"
#include "intel_gpu_commands.h"

+struct intel_engine_cs;
struct intel_gt;
struct i915_request;

@@ -46,7 +47,7 @@ u32 *gen8_emit_fini_breadcrumb_rcs(struct i915_request *rq, u32 *cs);
u32 *gen11_emit_fini_breadcrumb_rcs(struct i915_request *rq, u32 *cs);
u32 *gen12_emit_fini_breadcrumb_rcs(struct i915_request *rq, u32 *cs);

-u32 *gen12_emit_aux_table_inv(struct intel_gt *gt, u32 *cs, const i915_reg_t inv_reg);
+u32 *gen12_emit_aux_table_inv(struct intel_engine_cs *engine, u32 *cs);

static inline u32 *
__gen8_emit_pipe_control(u32 *batch, u32 flags0, u32 flags1, u32 offset)
diff --git a/drivers/gpu/drm/i915/gt/intel_gpu_commands.h b/drivers/gpu/drm/i915/gt/intel_gpu_commands.h
index d4e9702d3c8e..25ea5f8a464a 100644
--- a/drivers/gpu/drm/i915/gt/intel_gpu_commands.h
+++ b/drivers/gpu/drm/i915/gt/intel_gpu_commands.h
@@ -120,6 +120,7 @@
#define MI_SEMAPHORE_TARGET(engine) ((engine)<<15)
#define MI_SEMAPHORE_WAIT MI_INSTR(0x1c, 2) /* GEN8+ */
#define MI_SEMAPHORE_WAIT_TOKEN MI_INSTR(0x1c, 3) /* GEN12+ */
+#define MI_SEMAPHORE_REGISTER_POLL (1 << 16)
#define MI_SEMAPHORE_POLL (1 << 15)
#define MI_SEMAPHORE_SAD_GT_SDD (0 << 12)
#define MI_SEMAPHORE_SAD_GTE_SDD (1 << 12)
diff --git a/drivers/gpu/drm/i915/gt/intel_lrc.c b/drivers/gpu/drm/i915/gt/intel_lrc.c
index 137e41e37ea5..7eb01ff17d89 100644
--- a/drivers/gpu/drm/i915/gt/intel_lrc.c
+++ b/drivers/gpu/drm/i915/gt/intel_lrc.c
@@ -1296,10 +1296,7 @@ gen12_emit_indirect_ctx_rcs(const struct intel_context *ce, u32 *cs)
IS_DG2_G11(ce->engine->i915))
cs = gen8_emit_pipe_control(cs, PIPE_CONTROL_INSTRUCTION_CACHE_INVALIDATE, 0);

- /* hsdes: 1809175790 */
- if (!HAS_FLAT_CCS(ce->engine->i915))
- cs = gen12_emit_aux_table_inv(ce->engine->gt,
- cs, GEN12_CCS_AUX_INV);
+ cs = gen12_emit_aux_table_inv(ce->engine, cs);

/* Wa_16014892111 */
if (IS_DG2(ce->engine->i915))
@@ -1322,17 +1319,7 @@ gen12_emit_indirect_ctx_xcs(const struct intel_context *ce, u32 *cs)
PIPE_CONTROL_INSTRUCTION_CACHE_INVALIDATE,
0);

- /* hsdes: 1809175790 */
- if (!HAS_FLAT_CCS(ce->engine->i915)) {
- if (ce->engine->class == VIDEO_DECODE_CLASS)
- cs = gen12_emit_aux_table_inv(ce->engine->gt,
- cs, GEN12_VD0_AUX_INV);
- else if (ce->engine->class == VIDEO_ENHANCEMENT_CLASS)
- cs = gen12_emit_aux_table_inv(ce->engine->gt,
- cs, GEN12_VE0_AUX_INV);
- }
-
- return cs;
+ return gen12_emit_aux_table_inv(ce->engine, cs);
}

static void
diff --git a/drivers/gpu/drm/i915/i915_driver.c b/drivers/gpu/drm/i915/i915_driver.c
index 35bc2a3fa811..75a93951fe42 100644
--- a/drivers/gpu/drm/i915/i915_driver.c
+++ b/drivers/gpu/drm/i915/i915_driver.c
@@ -574,7 +574,6 @@ static int i915_pcode_init(struct drm_i915_private *i915)
static int i915_driver_hw_probe(struct drm_i915_private *dev_priv)
{
struct pci_dev *pdev = to_pci_dev(dev_priv->drm.dev);
- struct pci_dev *root_pdev;
int ret;

if (i915_inject_probe_failure(dev_priv))
@@ -686,15 +685,6 @@ static int i915_driver_hw_probe(struct drm_i915_private *dev_priv)

intel_bw_init_hw(dev_priv);

- /*
- * FIXME: Temporary hammer to avoid freezing the machine on our DGFX
- * This should be totally removed when we handle the pci states properly
- * on runtime PM and on s2idle cases.
- */
- root_pdev = pcie_find_root_port(pdev);
- if (root_pdev)
- pci_d3cold_disable(root_pdev);
-
return 0;

err_msi:
@@ -718,16 +708,11 @@ static int i915_driver_hw_probe(struct drm_i915_private *dev_priv)
static void i915_driver_hw_remove(struct drm_i915_private *dev_priv)
{
struct pci_dev *pdev = to_pci_dev(dev_priv->drm.dev);
- struct pci_dev *root_pdev;

i915_perf_fini(dev_priv);

if (pdev->msi_enabled)
pci_disable_msi(pdev);
-
- root_pdev = pcie_find_root_port(pdev);
- if (root_pdev)
- pci_d3cold_enable(root_pdev);
}

/**
@@ -1625,6 +1610,8 @@ static int intel_runtime_suspend(struct device *kdev)
{
struct drm_i915_private *dev_priv = kdev_to_i915(kdev);
struct intel_runtime_pm *rpm = &dev_priv->runtime_pm;
+ struct pci_dev *pdev = to_pci_dev(dev_priv->drm.dev);
+ struct pci_dev *root_pdev;
struct intel_gt *gt;
int ret, i;

@@ -1674,6 +1661,15 @@ static int intel_runtime_suspend(struct device *kdev)
drm_err(&dev_priv->drm,
"Unclaimed access detected prior to suspending\n");

+ /*
+ * FIXME: Temporary hammer to avoid freezing the machine on our DGFX
+ * This should be totally removed when we handle the pci states properly
+ * on runtime PM.
+ */
+ root_pdev = pcie_find_root_port(pdev);
+ if (root_pdev)
+ pci_d3cold_disable(root_pdev);
+
rpm->suspended = true;

/*
@@ -1712,6 +1708,8 @@ static int intel_runtime_resume(struct device *kdev)
{
struct drm_i915_private *dev_priv = kdev_to_i915(kdev);
struct intel_runtime_pm *rpm = &dev_priv->runtime_pm;
+ struct pci_dev *pdev = to_pci_dev(dev_priv->drm.dev);
+ struct pci_dev *root_pdev;
struct intel_gt *gt;
int ret, i;

@@ -1725,6 +1723,11 @@ static int intel_runtime_resume(struct device *kdev)

intel_opregion_notify_adapter(dev_priv, PCI_D0);
rpm->suspended = false;
+
+ root_pdev = pcie_find_root_port(pdev);
+ if (root_pdev)
+ pci_d3cold_enable(root_pdev);
+
if (intel_uncore_unclaimed_mmio(&dev_priv->uncore))
drm_dbg(&dev_priv->drm,
"Unclaimed access during suspend, bios?\n");
diff --git a/drivers/gpu/drm/meson/meson_drv.c b/drivers/gpu/drm/meson/meson_drv.c
index eea433ade79d..119544d88b58 100644
--- a/drivers/gpu/drm/meson/meson_drv.c
+++ b/drivers/gpu/drm/meson/meson_drv.c
@@ -285,7 +285,7 @@ static int meson_drv_bind_master(struct device *dev, bool has_components)
* Remove early framebuffers (ie. simplefb). The framebuffer can be
* located anywhere in RAM
*/
- ret = drm_aperture_remove_framebuffers(false, &meson_driver);
+ ret = drm_aperture_remove_framebuffers(&meson_driver);
if (ret)
goto free_drm;

diff --git a/drivers/gpu/drm/msm/msm_fbdev.c b/drivers/gpu/drm/msm/msm_fbdev.c
index 46168eccfac4..d4a9b501e1bc 100644
--- a/drivers/gpu/drm/msm/msm_fbdev.c
+++ b/drivers/gpu/drm/msm/msm_fbdev.c
@@ -157,7 +157,7 @@ struct drm_fb_helper *msm_fbdev_init(struct drm_device *dev)
}

/* the fw fb could be anywhere in memory */
- ret = drm_aperture_remove_framebuffers(false, dev->driver);
+ ret = drm_aperture_remove_framebuffers(dev->driver);
if (ret)
goto fini;

diff --git a/drivers/gpu/drm/rockchip/rockchip_drm_drv.c b/drivers/gpu/drm/rockchip/rockchip_drm_drv.c
index 813f9f8c8698..8e12053a220b 100644
--- a/drivers/gpu/drm/rockchip/rockchip_drm_drv.c
+++ b/drivers/gpu/drm/rockchip/rockchip_drm_drv.c
@@ -140,7 +140,7 @@ static int rockchip_drm_bind(struct device *dev)
int ret;

/* Remove existing drivers that may own the framebuffer memory. */
- ret = drm_aperture_remove_framebuffers(false, &rockchip_drm_driver);
+ ret = drm_aperture_remove_framebuffers(&rockchip_drm_driver);
if (ret) {
DRM_DEV_ERROR(dev,
"Failed to remove existing framebuffers - %d.\n",
diff --git a/drivers/gpu/drm/stm/drv.c b/drivers/gpu/drm/stm/drv.c
index d7914f5122df..0a09a85ac9d6 100644
--- a/drivers/gpu/drm/stm/drv.c
+++ b/drivers/gpu/drm/stm/drv.c
@@ -185,7 +185,7 @@ static int stm_drm_platform_probe(struct platform_device *pdev)

DRM_DEBUG("%s\n", __func__);

- ret = drm_aperture_remove_framebuffers(false, &drv_driver);
+ ret = drm_aperture_remove_framebuffers(&drv_driver);
if (ret)
return ret;

diff --git a/drivers/gpu/drm/sun4i/sun4i_drv.c b/drivers/gpu/drm/sun4i/sun4i_drv.c
index 7910c5853f0a..5c483bbccbbb 100644
--- a/drivers/gpu/drm/sun4i/sun4i_drv.c
+++ b/drivers/gpu/drm/sun4i/sun4i_drv.c
@@ -98,7 +98,7 @@ static int sun4i_drv_bind(struct device *dev)
goto unbind_all;

/* Remove early framebuffers (ie. simplefb) */
- ret = drm_aperture_remove_framebuffers(false, &sun4i_drv_driver);
+ ret = drm_aperture_remove_framebuffers(&sun4i_drv_driver);
if (ret)
goto unbind_all;

diff --git a/drivers/gpu/drm/tegra/drm.c b/drivers/gpu/drm/tegra/drm.c
index a1f909dac89a..5fc55b9777cb 100644
--- a/drivers/gpu/drm/tegra/drm.c
+++ b/drivers/gpu/drm/tegra/drm.c
@@ -1252,7 +1252,7 @@ static int host1x_drm_probe(struct host1x_device *dev)

drm_mode_config_reset(drm);

- err = drm_aperture_remove_framebuffers(false, &tegra_drm_driver);
+ err = drm_aperture_remove_framebuffers(&tegra_drm_driver);
if (err < 0)
goto hub;

diff --git a/drivers/gpu/drm/vc4/vc4_drv.c b/drivers/gpu/drm/vc4/vc4_drv.c
index 8c329c071c62..b6384a5dfdbc 100644
--- a/drivers/gpu/drm/vc4/vc4_drv.c
+++ b/drivers/gpu/drm/vc4/vc4_drv.c
@@ -351,7 +351,7 @@ static int vc4_drm_bind(struct device *dev)
return -EPROBE_DEFER;
}

- ret = drm_aperture_remove_framebuffers(false, driver);
+ ret = drm_aperture_remove_framebuffers(driver);
if (ret)
return ret;

diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_drv.h b/drivers/gpu/drm/vmwgfx/vmwgfx_drv.h
index 1ec9c53a7bf4..8459fab9d979 100644
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_drv.h
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_drv.h
@@ -1683,4 +1683,16 @@ static inline bool vmw_has_fences(struct vmw_private *vmw)
return (vmw_fifo_caps(vmw) & SVGA_FIFO_CAP_FENCE) != 0;
}

+static inline bool vmw_shadertype_is_valid(enum vmw_sm_type shader_model,
+ u32 shader_type)
+{
+ SVGA3dShaderType max_allowed = SVGA3D_SHADERTYPE_PREDX_MAX;
+
+ if (shader_model >= VMW_SM_5)
+ max_allowed = SVGA3D_SHADERTYPE_MAX;
+ else if (shader_model >= VMW_SM_4)
+ max_allowed = SVGA3D_SHADERTYPE_DX10_MAX;
+ return shader_type >= SVGA3D_SHADERTYPE_MIN && shader_type < max_allowed;
+}
+
#endif
diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_execbuf.c b/drivers/gpu/drm/vmwgfx/vmwgfx_execbuf.c
index 1c88b74d68cf..58ca9adf0987 100644
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_execbuf.c
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_execbuf.c
@@ -1985,7 +1985,7 @@ static int vmw_cmd_set_shader(struct vmw_private *dev_priv,

cmd = container_of(header, typeof(*cmd), header);

- if (cmd->body.type >= SVGA3D_SHADERTYPE_PREDX_MAX) {
+ if (!vmw_shadertype_is_valid(VMW_SM_LEGACY, cmd->body.type)) {
VMW_DEBUG_USER("Illegal shader type %u.\n",
(unsigned int) cmd->body.type);
return -EINVAL;
@@ -2108,8 +2108,6 @@ vmw_cmd_dx_set_single_constant_buffer(struct vmw_private *dev_priv,
SVGA3dCmdHeader *header)
{
VMW_DECLARE_CMD_VAR(*cmd, SVGA3dCmdDXSetSingleConstantBuffer);
- SVGA3dShaderType max_shader_num = has_sm5_context(dev_priv) ?
- SVGA3D_NUM_SHADERTYPE : SVGA3D_NUM_SHADERTYPE_DX10;

struct vmw_resource *res = NULL;
struct vmw_ctx_validation_info *ctx_node = VMW_GET_CTX_NODE(sw_context);
@@ -2126,6 +2124,14 @@ vmw_cmd_dx_set_single_constant_buffer(struct vmw_private *dev_priv,
if (unlikely(ret != 0))
return ret;

+ if (!vmw_shadertype_is_valid(dev_priv->sm_type, cmd->body.type) ||
+ cmd->body.slot >= SVGA3D_DX_MAX_CONSTBUFFERS) {
+ VMW_DEBUG_USER("Illegal const buffer shader %u slot %u.\n",
+ (unsigned int) cmd->body.type,
+ (unsigned int) cmd->body.slot);
+ return -EINVAL;
+ }
+
binding.bi.ctx = ctx_node->ctx;
binding.bi.res = res;
binding.bi.bt = vmw_ctx_binding_cb;
@@ -2134,14 +2140,6 @@ vmw_cmd_dx_set_single_constant_buffer(struct vmw_private *dev_priv,
binding.size = cmd->body.sizeInBytes;
binding.slot = cmd->body.slot;

- if (binding.shader_slot >= max_shader_num ||
- binding.slot >= SVGA3D_DX_MAX_CONSTBUFFERS) {
- VMW_DEBUG_USER("Illegal const buffer shader %u slot %u.\n",
- (unsigned int) cmd->body.type,
- (unsigned int) binding.slot);
- return -EINVAL;
- }
-
vmw_binding_add(ctx_node->staged, &binding.bi, binding.shader_slot,
binding.slot);

@@ -2200,15 +2198,13 @@ static int vmw_cmd_dx_set_shader_res(struct vmw_private *dev_priv,
{
VMW_DECLARE_CMD_VAR(*cmd, SVGA3dCmdDXSetShaderResources) =
container_of(header, typeof(*cmd), header);
- SVGA3dShaderType max_allowed = has_sm5_context(dev_priv) ?
- SVGA3D_SHADERTYPE_MAX : SVGA3D_SHADERTYPE_DX10_MAX;

u32 num_sr_view = (cmd->header.size - sizeof(cmd->body)) /
sizeof(SVGA3dShaderResourceViewId);

if ((u64) cmd->body.startView + (u64) num_sr_view >
(u64) SVGA3D_DX_MAX_SRVIEWS ||
- cmd->body.type >= max_allowed) {
+ !vmw_shadertype_is_valid(dev_priv->sm_type, cmd->body.type)) {
VMW_DEBUG_USER("Invalid shader binding.\n");
return -EINVAL;
}
@@ -2232,8 +2228,6 @@ static int vmw_cmd_dx_set_shader(struct vmw_private *dev_priv,
SVGA3dCmdHeader *header)
{
VMW_DECLARE_CMD_VAR(*cmd, SVGA3dCmdDXSetShader);
- SVGA3dShaderType max_allowed = has_sm5_context(dev_priv) ?
- SVGA3D_SHADERTYPE_MAX : SVGA3D_SHADERTYPE_DX10_MAX;
struct vmw_resource *res = NULL;
struct vmw_ctx_validation_info *ctx_node = VMW_GET_CTX_NODE(sw_context);
struct vmw_ctx_bindinfo_shader binding;
@@ -2244,8 +2238,7 @@ static int vmw_cmd_dx_set_shader(struct vmw_private *dev_priv,

cmd = container_of(header, typeof(*cmd), header);

- if (cmd->body.type >= max_allowed ||
- cmd->body.type < SVGA3D_SHADERTYPE_MIN) {
+ if (!vmw_shadertype_is_valid(dev_priv->sm_type, cmd->body.type)) {
VMW_DEBUG_USER("Illegal shader type %u.\n",
(unsigned int) cmd->body.type);
return -EINVAL;
diff --git a/drivers/hwmon/aquacomputer_d5next.c b/drivers/hwmon/aquacomputer_d5next.c
index c51a2678f0eb..8c7796d3fdd2 100644
--- a/drivers/hwmon/aquacomputer_d5next.c
+++ b/drivers/hwmon/aquacomputer_d5next.c
@@ -12,9 +12,11 @@

#include <linux/crc16.h>
#include <linux/debugfs.h>
+#include <linux/delay.h>
#include <linux/hid.h>
#include <linux/hwmon.h>
#include <linux/jiffies.h>
+#include <linux/ktime.h>
#include <linux/module.h>
#include <linux/mutex.h>
#include <linux/seq_file.h>
@@ -49,6 +51,8 @@ static const char *const aqc_device_names[] = {

#define CTRL_REPORT_ID 0x03

+#define CTRL_REPORT_DELAY 200 /* ms */
+
/* The HID report that the official software always sends
* after writing values, currently same for all devices
*/
@@ -269,6 +273,9 @@ struct aqc_data {
enum kinds kind;
const char *name;

+ ktime_t last_ctrl_report_op;
+ int ctrl_report_delay; /* Delay between two ctrl report operations, in ms */
+
int buffer_size;
u8 *buffer;
int checksum_start;
@@ -325,17 +332,35 @@ static int aqc_pwm_to_percent(long val)
return DIV_ROUND_CLOSEST(val * 100 * 100, 255);
}

+static void aqc_delay_ctrl_report(struct aqc_data *priv)
+{
+ /*
+ * If previous read or write is too close to this one, delay the current operation
+ * to give the device enough time to process the previous one.
+ */
+ if (priv->ctrl_report_delay) {
+ s64 delta = ktime_ms_delta(ktime_get(), priv->last_ctrl_report_op);
+
+ if (delta < priv->ctrl_report_delay)
+ msleep(priv->ctrl_report_delay - delta);
+ }
+}
+
/* Expects the mutex to be locked */
static int aqc_get_ctrl_data(struct aqc_data *priv)
{
int ret;

+ aqc_delay_ctrl_report(priv);
+
memset(priv->buffer, 0x00, priv->buffer_size);
ret = hid_hw_raw_request(priv->hdev, CTRL_REPORT_ID, priv->buffer, priv->buffer_size,
HID_FEATURE_REPORT, HID_REQ_GET_REPORT);
if (ret < 0)
ret = -ENODATA;

+ priv->last_ctrl_report_op = ktime_get();
+
return ret;
}

@@ -345,6 +370,8 @@ static int aqc_send_ctrl_data(struct aqc_data *priv)
int ret;
u16 checksum;

+ aqc_delay_ctrl_report(priv);
+
/* Init and xorout value for CRC-16/USB is 0xffff */
checksum = crc16(0xffff, priv->buffer + priv->checksum_start, priv->checksum_length);
checksum ^= 0xffff;
@@ -356,12 +383,16 @@ static int aqc_send_ctrl_data(struct aqc_data *priv)
ret = hid_hw_raw_request(priv->hdev, CTRL_REPORT_ID, priv->buffer, priv->buffer_size,
HID_FEATURE_REPORT, HID_REQ_SET_REPORT);
if (ret < 0)
- return ret;
+ goto record_access_and_ret;

/* The official software sends this report after every change, so do it here as well */
ret = hid_hw_raw_request(priv->hdev, SECONDARY_CTRL_REPORT_ID, secondary_ctrl_report,
SECONDARY_CTRL_REPORT_SIZE, HID_FEATURE_REPORT,
HID_REQ_SET_REPORT);
+
+record_access_and_ret:
+ priv->last_ctrl_report_op = ktime_get();
+
return ret;
}

@@ -853,6 +884,7 @@ static int aqc_probe(struct hid_device *hdev, const struct hid_device_id *id)
priv->virtual_temp_sensor_start_offset = D5NEXT_VIRTUAL_SENSORS_START;
priv->power_cycle_count_offset = D5NEXT_POWER_CYCLES;
priv->buffer_size = D5NEXT_CTRL_REPORT_SIZE;
+ priv->ctrl_report_delay = CTRL_REPORT_DELAY;

priv->temp_label = label_d5next_temp;
priv->virtual_temp_label = label_virtual_temp_sensors;
@@ -893,6 +925,7 @@ static int aqc_probe(struct hid_device *hdev, const struct hid_device_id *id)
priv->virtual_temp_sensor_start_offset = OCTO_VIRTUAL_SENSORS_START;
priv->power_cycle_count_offset = OCTO_POWER_CYCLES;
priv->buffer_size = OCTO_CTRL_REPORT_SIZE;
+ priv->ctrl_report_delay = CTRL_REPORT_DELAY;

priv->temp_label = label_temp_sensors;
priv->virtual_temp_label = label_virtual_temp_sensors;
@@ -913,6 +946,7 @@ static int aqc_probe(struct hid_device *hdev, const struct hid_device_id *id)
priv->virtual_temp_sensor_start_offset = QUADRO_VIRTUAL_SENSORS_START;
priv->power_cycle_count_offset = QUADRO_POWER_CYCLES;
priv->buffer_size = QUADRO_CTRL_REPORT_SIZE;
+ priv->ctrl_report_delay = CTRL_REPORT_DELAY;
priv->flow_sensor_offset = QUADRO_FLOW_SENSOR_OFFSET;

priv->temp_label = label_temp_sensors;
diff --git a/drivers/media/platform/mediatek/vcodec/mtk_vcodec_enc.c b/drivers/media/platform/mediatek/vcodec/mtk_vcodec_enc.c
index d810a78dde51..31e3c3766218 100644
--- a/drivers/media/platform/mediatek/vcodec/mtk_vcodec_enc.c
+++ b/drivers/media/platform/mediatek/vcodec/mtk_vcodec_enc.c
@@ -821,6 +821,8 @@ static int vb2ops_venc_queue_setup(struct vb2_queue *vq,
return -EINVAL;

if (*nplanes) {
+ if (*nplanes != q_data->fmt->num_planes)
+ return -EINVAL;
for (i = 0; i < *nplanes; i++)
if (sizes[i] < q_data->sizeimage[i])
return -EINVAL;
diff --git a/drivers/net/bonding/bond_alb.c b/drivers/net/bonding/bond_alb.c
index b9dbad3a8af8..fc5da5d7744d 100644
--- a/drivers/net/bonding/bond_alb.c
+++ b/drivers/net/bonding/bond_alb.c
@@ -660,10 +660,10 @@ static struct slave *rlb_arp_xmit(struct sk_buff *skb, struct bonding *bond)
return NULL;
arp = (struct arp_pkt *)skb_network_header(skb);

- /* Don't modify or load balance ARPs that do not originate locally
- * (e.g.,arrive via a bridge).
+ /* Don't modify or load balance ARPs that do not originate
+ * from the bond itself or a VLAN directly above the bond.
*/
- if (!bond_slave_has_mac_rx(bond, arp->mac_src))
+ if (!bond_slave_has_mac_rcu(bond, arp->mac_src))
return NULL;

dev = ip_dev_find(dev_net(bond->dev), arp->ip_src);
diff --git a/drivers/net/can/vxcan.c b/drivers/net/can/vxcan.c
index 26a472d2ea58..6d549dbdb467 100644
--- a/drivers/net/can/vxcan.c
+++ b/drivers/net/can/vxcan.c
@@ -192,12 +192,7 @@ static int vxcan_newlink(struct net *net, struct net_device *dev,

nla_peer = data[VXCAN_INFO_PEER];
ifmp = nla_data(nla_peer);
- err = rtnl_nla_parse_ifla(peer_tb,
- nla_data(nla_peer) +
- sizeof(struct ifinfomsg),
- nla_len(nla_peer) -
- sizeof(struct ifinfomsg),
- NULL);
+ err = rtnl_nla_parse_ifinfomsg(peer_tb, nla_peer, extack);
if (err < 0)
return err;

diff --git a/drivers/net/dsa/mt7530.c b/drivers/net/dsa/mt7530.c
index 51d2ef0dc835..b988c8a40d53 100644
--- a/drivers/net/dsa/mt7530.c
+++ b/drivers/net/dsa/mt7530.c
@@ -1005,6 +1005,10 @@ mt753x_trap_frames(struct mt7530_priv *priv)
mt7530_rmw(priv, MT753X_BPC, MT753X_BPDU_PORT_FW_MASK,
MT753X_BPDU_CPU_ONLY);

+ /* Trap 802.1X PAE frames to the CPU port(s) */
+ mt7530_rmw(priv, MT753X_BPC, MT753X_PAE_PORT_FW_MASK,
+ MT753X_PAE_PORT_FW(MT753X_BPDU_CPU_ONLY));
+
/* Trap LLDP frames with :0E MAC DA to the CPU port(s) */
mt7530_rmw(priv, MT753X_RGAC2, MT753X_R0E_PORT_FW_MASK,
MT753X_R0E_PORT_FW(MT753X_BPDU_CPU_ONLY));
diff --git a/drivers/net/dsa/mt7530.h b/drivers/net/dsa/mt7530.h
index 9a45663d8b4e..6202b0f8c3f3 100644
--- a/drivers/net/dsa/mt7530.h
+++ b/drivers/net/dsa/mt7530.h
@@ -64,6 +64,8 @@ enum mt753x_id {
/* Registers for BPDU and PAE frame control*/
#define MT753X_BPC 0x24
#define MT753X_BPDU_PORT_FW_MASK GENMASK(2, 0)
+#define MT753X_PAE_PORT_FW_MASK GENMASK(18, 16)
+#define MT753X_PAE_PORT_FW(x) FIELD_PREP(MT753X_PAE_PORT_FW_MASK, x)

/* Register for :03 and :0E MAC DA frame control */
#define MT753X_RGAC2 0x2c
diff --git a/drivers/net/dsa/ocelot/felix_vsc9959.c b/drivers/net/dsa/ocelot/felix_vsc9959.c
index 5f6af0870dfd..0186482194d2 100644
--- a/drivers/net/dsa/ocelot/felix_vsc9959.c
+++ b/drivers/net/dsa/ocelot/felix_vsc9959.c
@@ -1071,6 +1071,9 @@ static u64 vsc9959_tas_remaining_gate_len_ps(u64 gate_len_ns)
if (gate_len_ns == U64_MAX)
return U64_MAX;

+ if (gate_len_ns < VSC9959_TAS_MIN_GATE_LEN_NS)
+ return 0;
+
return (gate_len_ns - VSC9959_TAS_MIN_GATE_LEN_NS) * PSEC_PER_NSEC;
}

diff --git a/drivers/net/ethernet/broadcom/bgmac.c b/drivers/net/ethernet/broadcom/bgmac.c
index 10c7c232cc4e..52ee3751187a 100644
--- a/drivers/net/ethernet/broadcom/bgmac.c
+++ b/drivers/net/ethernet/broadcom/bgmac.c
@@ -1448,7 +1448,7 @@ int bgmac_phy_connect_direct(struct bgmac *bgmac)
int err;

phy_dev = fixed_phy_register(PHY_POLL, &fphy_status, NULL);
- if (!phy_dev || IS_ERR(phy_dev)) {
+ if (IS_ERR(phy_dev)) {
dev_err(bgmac->dev, "Failed to register fixed PHY device\n");
return -ENODEV;
}
diff --git a/drivers/net/ethernet/broadcom/genet/bcmmii.c b/drivers/net/ethernet/broadcom/genet/bcmmii.c
index 1fe8038587ac..1779ee524dac 100644
--- a/drivers/net/ethernet/broadcom/genet/bcmmii.c
+++ b/drivers/net/ethernet/broadcom/genet/bcmmii.c
@@ -608,7 +608,7 @@ static int bcmgenet_mii_pd_init(struct bcmgenet_priv *priv)
};

phydev = fixed_phy_register(PHY_POLL, &fphy_status, NULL);
- if (!phydev || IS_ERR(phydev)) {
+ if (IS_ERR(phydev)) {
dev_err(kdev, "failed to register fixed PHY device\n");
return -ENODEV;
}
diff --git a/drivers/net/ethernet/chelsio/inline_crypto/chtls/chtls_cm.c b/drivers/net/ethernet/chelsio/inline_crypto/chtls/chtls_cm.c
index c2e7037c7ba1..7750702900fa 100644
--- a/drivers/net/ethernet/chelsio/inline_crypto/chtls/chtls_cm.c
+++ b/drivers/net/ethernet/chelsio/inline_crypto/chtls/chtls_cm.c
@@ -1466,7 +1466,7 @@ static void make_established(struct sock *sk, u32 snd_isn, unsigned int opt)
tp->write_seq = snd_isn;
tp->snd_nxt = snd_isn;
tp->snd_una = snd_isn;
- inet_sk(sk)->inet_id = get_random_u16();
+ atomic_set(&inet_sk(sk)->inet_id, get_random_u16());
assign_rxopt(sk, opt);

if (tp->rcv_wnd > (RCV_BUFSIZ_M << 10))
diff --git a/drivers/net/ethernet/ibm/ibmveth.c b/drivers/net/ethernet/ibm/ibmveth.c
index 5b96cd94dcd2..0b4ec6e41eb4 100644
--- a/drivers/net/ethernet/ibm/ibmveth.c
+++ b/drivers/net/ethernet/ibm/ibmveth.c
@@ -203,7 +203,7 @@ static inline void ibmveth_flush_buffer(void *addr, unsigned long length)
unsigned long offset;

for (offset = 0; offset < length; offset += SMP_CACHE_BYTES)
- asm("dcbfl %0,%1" :: "b" (addr), "r" (offset));
+ asm("dcbf %0,%1,1" :: "b" (addr), "r" (offset));
}

/* replenish the buffers for a pool. note that we don't need to
diff --git a/drivers/net/ethernet/intel/i40e/i40e_main.c b/drivers/net/ethernet/intel/i40e/i40e_main.c
index 0e01b1927c1c..08ccf0024ce1 100644
--- a/drivers/net/ethernet/intel/i40e/i40e_main.c
+++ b/drivers/net/ethernet/intel/i40e/i40e_main.c
@@ -2615,7 +2615,7 @@ int i40e_sync_vsi_filters(struct i40e_vsi *vsi)
retval = i40e_correct_mac_vlan_filters
(vsi, &tmp_add_list, &tmp_del_list,
vlan_filters);
- else
+ else if (pf->vf)
retval = i40e_correct_vf_mac_vlan_filters
(vsi, &tmp_add_list, &tmp_del_list,
vlan_filters, pf->vf[vsi->vf_id].trusted);
@@ -2788,7 +2788,8 @@ int i40e_sync_vsi_filters(struct i40e_vsi *vsi)
}

/* if the VF is not trusted do not do promisc */
- if ((vsi->type == I40E_VSI_SRIOV) && !pf->vf[vsi->vf_id].trusted) {
+ if (vsi->type == I40E_VSI_SRIOV && pf->vf &&
+ !pf->vf[vsi->vf_id].trusted) {
clear_bit(__I40E_VSI_OVERFLOW_PROMISC, vsi->state);
goto out;
}
diff --git a/drivers/net/ethernet/intel/ice/ice_base.c b/drivers/net/ethernet/intel/ice/ice_base.c
index e864634d66bc..818eca6aa4a4 100644
--- a/drivers/net/ethernet/intel/ice/ice_base.c
+++ b/drivers/net/ethernet/intel/ice/ice_base.c
@@ -396,7 +396,8 @@ static int ice_setup_rx_ctx(struct ice_rx_ring *ring)
/* Receive Packet Data Buffer Size.
* The Packet Data Buffer Size is defined in 128 byte units.
*/
- rlan_ctx.dbuf = ring->rx_buf_len >> ICE_RLAN_CTX_DBUF_S;
+ rlan_ctx.dbuf = DIV_ROUND_UP(ring->rx_buf_len,
+ BIT_ULL(ICE_RLAN_CTX_DBUF_S));

/* use 32 byte descriptors */
rlan_ctx.dsize = 1;
diff --git a/drivers/net/ethernet/intel/ice/ice_sriov.c b/drivers/net/ethernet/intel/ice/ice_sriov.c
index b8c31bf721ad..b719e9a771e3 100644
--- a/drivers/net/ethernet/intel/ice/ice_sriov.c
+++ b/drivers/net/ethernet/intel/ice/ice_sriov.c
@@ -1240,7 +1240,7 @@ int ice_set_vf_spoofchk(struct net_device *netdev, int vf_id, bool ena)
if (!vf)
return -EINVAL;

- ret = ice_check_vf_ready_for_reset(vf);
+ ret = ice_check_vf_ready_for_cfg(vf);
if (ret)
goto out_put_vf;

@@ -1355,7 +1355,7 @@ int ice_set_vf_mac(struct net_device *netdev, int vf_id, u8 *mac)
goto out_put_vf;
}

- ret = ice_check_vf_ready_for_reset(vf);
+ ret = ice_check_vf_ready_for_cfg(vf);
if (ret)
goto out_put_vf;

@@ -1409,7 +1409,7 @@ int ice_set_vf_trust(struct net_device *netdev, int vf_id, bool trusted)
return -EOPNOTSUPP;
}

- ret = ice_check_vf_ready_for_reset(vf);
+ ret = ice_check_vf_ready_for_cfg(vf);
if (ret)
goto out_put_vf;

@@ -1722,7 +1722,7 @@ ice_set_vf_port_vlan(struct net_device *netdev, int vf_id, u16 vlan_id, u8 qos,
if (!vf)
return -EINVAL;

- ret = ice_check_vf_ready_for_reset(vf);
+ ret = ice_check_vf_ready_for_cfg(vf);
if (ret)
goto out_put_vf;

diff --git a/drivers/net/ethernet/intel/ice/ice_vf_lib.c b/drivers/net/ethernet/intel/ice/ice_vf_lib.c
index 71047fc34139..9dbe6e9bb1f7 100644
--- a/drivers/net/ethernet/intel/ice/ice_vf_lib.c
+++ b/drivers/net/ethernet/intel/ice/ice_vf_lib.c
@@ -185,25 +185,6 @@ int ice_check_vf_ready_for_cfg(struct ice_vf *vf)
return 0;
}

-/**
- * ice_check_vf_ready_for_reset - check if VF is ready to be reset
- * @vf: VF to check if it's ready to be reset
- *
- * The purpose of this function is to ensure that the VF is not in reset,
- * disabled, and is both initialized and active, thus enabling us to safely
- * initialize another reset.
- */
-int ice_check_vf_ready_for_reset(struct ice_vf *vf)
-{
- int ret;
-
- ret = ice_check_vf_ready_for_cfg(vf);
- if (!ret && !test_bit(ICE_VF_STATE_ACTIVE, vf->vf_states))
- ret = -EAGAIN;
-
- return ret;
-}
-
/**
* ice_trigger_vf_reset - Reset a VF on HW
* @vf: pointer to the VF structure
@@ -588,11 +569,17 @@ int ice_reset_vf(struct ice_vf *vf, u32 flags)
return 0;
}

+ if (flags & ICE_VF_RESET_LOCK)
+ mutex_lock(&vf->cfg_lock);
+ else
+ lockdep_assert_held(&vf->cfg_lock);
+
if (ice_is_vf_disabled(vf)) {
vsi = ice_get_vf_vsi(vf);
if (!vsi) {
dev_dbg(dev, "VF is already removed\n");
- return -EINVAL;
+ err = -EINVAL;
+ goto out_unlock;
}
ice_vsi_stop_lan_tx_rings(vsi, ICE_NO_RESET, vf->vf_id);

@@ -601,14 +588,9 @@ int ice_reset_vf(struct ice_vf *vf, u32 flags)

dev_dbg(dev, "VF is already disabled, there is no need for resetting it, telling VM, all is fine %d\n",
vf->vf_id);
- return 0;
+ goto out_unlock;
}

- if (flags & ICE_VF_RESET_LOCK)
- mutex_lock(&vf->cfg_lock);
- else
- lockdep_assert_held(&vf->cfg_lock);
-
/* Set VF disable bit state here, before triggering reset */
set_bit(ICE_VF_STATE_DIS, vf->vf_states);
ice_trigger_vf_reset(vf, flags & ICE_VF_RESET_VFLR, false);
diff --git a/drivers/net/ethernet/intel/ice/ice_vf_lib.h b/drivers/net/ethernet/intel/ice/ice_vf_lib.h
index e5bed8572462..9f7fcd8e5714 100644
--- a/drivers/net/ethernet/intel/ice/ice_vf_lib.h
+++ b/drivers/net/ethernet/intel/ice/ice_vf_lib.h
@@ -214,7 +214,6 @@ u16 ice_get_num_vfs(struct ice_pf *pf);
struct ice_vsi *ice_get_vf_vsi(struct ice_vf *vf);
bool ice_is_vf_disabled(struct ice_vf *vf);
int ice_check_vf_ready_for_cfg(struct ice_vf *vf);
-int ice_check_vf_ready_for_reset(struct ice_vf *vf);
void ice_set_vf_state_dis(struct ice_vf *vf);
bool ice_is_any_vf_in_unicast_promisc(struct ice_pf *pf);
void
diff --git a/drivers/net/ethernet/intel/ice/ice_virtchnl.c b/drivers/net/ethernet/intel/ice/ice_virtchnl.c
index ef3c709d6a75..2b4c791b6cba 100644
--- a/drivers/net/ethernet/intel/ice/ice_virtchnl.c
+++ b/drivers/net/ethernet/intel/ice/ice_virtchnl.c
@@ -3722,7 +3722,6 @@ void ice_vc_process_vf_msg(struct ice_pf *pf, struct ice_rq_event_info *event)
ice_vc_notify_vf_link_state(vf);
break;
case VIRTCHNL_OP_RESET_VF:
- clear_bit(ICE_VF_STATE_ACTIVE, vf->vf_states);
ops->reset_vf(vf);
break;
case VIRTCHNL_OP_ADD_ETH_ADDR:
diff --git a/drivers/net/ethernet/intel/igb/igb_ptp.c b/drivers/net/ethernet/intel/igb/igb_ptp.c
index 15e57460e19e..07171e574e7d 100644
--- a/drivers/net/ethernet/intel/igb/igb_ptp.c
+++ b/drivers/net/ethernet/intel/igb/igb_ptp.c
@@ -1404,18 +1404,6 @@ void igb_ptp_init(struct igb_adapter *adapter)
return;
}

- spin_lock_init(&adapter->tmreg_lock);
- INIT_WORK(&adapter->ptp_tx_work, igb_ptp_tx_work);
-
- if (adapter->ptp_flags & IGB_PTP_OVERFLOW_CHECK)
- INIT_DELAYED_WORK(&adapter->ptp_overflow_work,
- igb_ptp_overflow_check);
-
- adapter->tstamp_config.rx_filter = HWTSTAMP_FILTER_NONE;
- adapter->tstamp_config.tx_type = HWTSTAMP_TX_OFF;
-
- igb_ptp_reset(adapter);
-
adapter->ptp_clock = ptp_clock_register(&adapter->ptp_caps,
&adapter->pdev->dev);
if (IS_ERR(adapter->ptp_clock)) {
@@ -1425,6 +1413,18 @@ void igb_ptp_init(struct igb_adapter *adapter)
dev_info(&adapter->pdev->dev, "added PHC on %s\n",
adapter->netdev->name);
adapter->ptp_flags |= IGB_PTP_ENABLED;
+
+ spin_lock_init(&adapter->tmreg_lock);
+ INIT_WORK(&adapter->ptp_tx_work, igb_ptp_tx_work);
+
+ if (adapter->ptp_flags & IGB_PTP_OVERFLOW_CHECK)
+ INIT_DELAYED_WORK(&adapter->ptp_overflow_work,
+ igb_ptp_overflow_check);
+
+ adapter->tstamp_config.rx_filter = HWTSTAMP_FILTER_NONE;
+ adapter->tstamp_config.tx_type = HWTSTAMP_TX_OFF;
+
+ igb_ptp_reset(adapter);
}
}

diff --git a/drivers/net/ethernet/intel/igc/igc_defines.h b/drivers/net/ethernet/intel/igc/igc_defines.h
index dbfa4b9dee06..90ca01889cd8 100644
--- a/drivers/net/ethernet/intel/igc/igc_defines.h
+++ b/drivers/net/ethernet/intel/igc/igc_defines.h
@@ -536,7 +536,7 @@
#define IGC_PTM_CTRL_START_NOW BIT(29) /* Start PTM Now */
#define IGC_PTM_CTRL_EN BIT(30) /* Enable PTM */
#define IGC_PTM_CTRL_TRIG BIT(31) /* PTM Cycle trigger */
-#define IGC_PTM_CTRL_SHRT_CYC(usec) (((usec) & 0x2f) << 2)
+#define IGC_PTM_CTRL_SHRT_CYC(usec) (((usec) & 0x3f) << 2)
#define IGC_PTM_CTRL_PTM_TO(usec) (((usec) & 0xff) << 8)

#define IGC_PTM_SHORT_CYC_DEFAULT 10 /* Default Short/interrupted cycle interval */
diff --git a/drivers/net/ethernet/marvell/octeontx2/af/rvu_nix.c b/drivers/net/ethernet/marvell/octeontx2/af/rvu_nix.c
index 705325431dec..5541e284cd3f 100644
--- a/drivers/net/ethernet/marvell/octeontx2/af/rvu_nix.c
+++ b/drivers/net/ethernet/marvell/octeontx2/af/rvu_nix.c
@@ -4005,9 +4005,10 @@ int rvu_mbox_handler_nix_set_hw_frs(struct rvu *rvu, struct nix_frs_cfg *req,
if (link < 0)
return NIX_AF_ERR_RX_LINK_INVALID;

- nix_find_link_frs(rvu, req, pcifunc);

linkcfg:
+ nix_find_link_frs(rvu, req, pcifunc);
+
cfg = rvu_read64(rvu, blkaddr, NIX_AF_RX_LINKX_CFG(link));
cfg = (cfg & ~(0xFFFFULL << 16)) | ((u64)req->maxlen << 16);
if (req->update_minlen)
diff --git a/drivers/net/ethernet/mellanox/mlxsw/core_acl_flex_keys.c b/drivers/net/ethernet/mellanox/mlxsw/core_acl_flex_keys.c
index bd1a51a0a540..f208a237d0b5 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/core_acl_flex_keys.c
+++ b/drivers/net/ethernet/mellanox/mlxsw/core_acl_flex_keys.c
@@ -32,8 +32,8 @@ static const struct mlxsw_afk_element_info mlxsw_afk_element_infos[] = {
MLXSW_AFK_ELEMENT_INFO_U32(IP_TTL_, 0x18, 0, 8),
MLXSW_AFK_ELEMENT_INFO_U32(IP_ECN, 0x18, 9, 2),
MLXSW_AFK_ELEMENT_INFO_U32(IP_DSCP, 0x18, 11, 6),
- MLXSW_AFK_ELEMENT_INFO_U32(VIRT_ROUTER_MSB, 0x18, 17, 3),
- MLXSW_AFK_ELEMENT_INFO_U32(VIRT_ROUTER_LSB, 0x18, 20, 8),
+ MLXSW_AFK_ELEMENT_INFO_U32(VIRT_ROUTER_MSB, 0x18, 17, 4),
+ MLXSW_AFK_ELEMENT_INFO_U32(VIRT_ROUTER_LSB, 0x18, 21, 8),
MLXSW_AFK_ELEMENT_INFO_BUF(SRC_IP_96_127, 0x20, 4),
MLXSW_AFK_ELEMENT_INFO_BUF(SRC_IP_64_95, 0x24, 4),
MLXSW_AFK_ELEMENT_INFO_BUF(SRC_IP_32_63, 0x28, 4),
diff --git a/drivers/net/ethernet/mellanox/mlxsw/pci.c b/drivers/net/ethernet/mellanox/mlxsw/pci.c
index c968309657dd..51eea1f0529c 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/pci.c
+++ b/drivers/net/ethernet/mellanox/mlxsw/pci.c
@@ -517,11 +517,15 @@ static void mlxsw_pci_skb_cb_ts_set(struct mlxsw_pci *mlxsw_pci,
struct sk_buff *skb,
enum mlxsw_pci_cqe_v cqe_v, char *cqe)
{
+ u8 ts_type;
+
if (cqe_v != MLXSW_PCI_CQE_V2)
return;

- if (mlxsw_pci_cqe2_time_stamp_type_get(cqe) !=
- MLXSW_PCI_CQE_TIME_STAMP_TYPE_UTC)
+ ts_type = mlxsw_pci_cqe2_time_stamp_type_get(cqe);
+
+ if (ts_type != MLXSW_PCI_CQE_TIME_STAMP_TYPE_UTC &&
+ ts_type != MLXSW_PCI_CQE_TIME_STAMP_TYPE_MIRROR_UTC)
return;

mlxsw_skb_cb(skb)->cqe_ts.sec = mlxsw_pci_cqe2_time_stamp_sec_get(cqe);
diff --git a/drivers/net/ethernet/mellanox/mlxsw/reg.h b/drivers/net/ethernet/mellanox/mlxsw/reg.h
index 0777bed5bb1a..a34ff19c58bd 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/reg.h
+++ b/drivers/net/ethernet/mellanox/mlxsw/reg.h
@@ -97,14 +97,6 @@ MLXSW_ITEM32(reg, sspr, m, 0x00, 31, 1);
*/
MLXSW_ITEM32_LP(reg, sspr, 0x00, 16, 0x00, 12);

-/* reg_sspr_sub_port
- * Virtual port within the physical port.
- * Should be set to 0 when virtual ports are not enabled on the port.
- *
- * Access: RW
- */
-MLXSW_ITEM32(reg, sspr, sub_port, 0x00, 8, 8);
-
/* reg_sspr_system_port
* Unique identifier within the stacking domain that represents all the ports
* that are available in the system (external ports).
@@ -120,7 +112,6 @@ static inline void mlxsw_reg_sspr_pack(char *payload, u16 local_port)
MLXSW_REG_ZERO(sspr, payload);
mlxsw_reg_sspr_m_set(payload, 1);
mlxsw_reg_sspr_local_port_set(payload, local_port);
- mlxsw_reg_sspr_sub_port_set(payload, 0);
mlxsw_reg_sspr_system_port_set(payload, local_port);
}

diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum2_mr_tcam.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum2_mr_tcam.c
index e4f4cded2b6f..b1178b7a7f51 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/spectrum2_mr_tcam.c
+++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum2_mr_tcam.c
@@ -193,7 +193,7 @@ mlxsw_sp2_mr_tcam_rule_parse(struct mlxsw_sp_acl_rule *rule,
key->vrid, GENMASK(7, 0));
mlxsw_sp_acl_rulei_keymask_u32(rulei,
MLXSW_AFK_ELEMENT_VIRT_ROUTER_MSB,
- key->vrid >> 8, GENMASK(2, 0));
+ key->vrid >> 8, GENMASK(3, 0));
switch (key->proto) {
case MLXSW_SP_L3_PROTO_IPV4:
return mlxsw_sp2_mr_tcam_rule_parse4(rulei, key);
diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum_acl_flex_keys.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum_acl_flex_keys.c
index 00c32320f891..173808c096ba 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/spectrum_acl_flex_keys.c
+++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum_acl_flex_keys.c
@@ -169,7 +169,7 @@ static struct mlxsw_afk_element_inst mlxsw_sp_afk_element_info_ipv4_2[] = {

static struct mlxsw_afk_element_inst mlxsw_sp_afk_element_info_ipv4_4[] = {
MLXSW_AFK_ELEMENT_INST_U32(VIRT_ROUTER_LSB, 0x04, 24, 8),
- MLXSW_AFK_ELEMENT_INST_U32(VIRT_ROUTER_MSB, 0x00, 0, 3),
+ MLXSW_AFK_ELEMENT_INST_EXT_U32(VIRT_ROUTER_MSB, 0x00, 0, 3, 0, true),
};

static struct mlxsw_afk_element_inst mlxsw_sp_afk_element_info_ipv6_0[] = {
@@ -319,7 +319,7 @@ static struct mlxsw_afk_element_inst mlxsw_sp_afk_element_info_mac_5b[] = {

static struct mlxsw_afk_element_inst mlxsw_sp_afk_element_info_ipv4_4b[] = {
MLXSW_AFK_ELEMENT_INST_U32(VIRT_ROUTER_LSB, 0x04, 13, 8),
- MLXSW_AFK_ELEMENT_INST_EXT_U32(VIRT_ROUTER_MSB, 0x04, 21, 4, 0, true),
+ MLXSW_AFK_ELEMENT_INST_U32(VIRT_ROUTER_MSB, 0x04, 21, 4),
};

static struct mlxsw_afk_element_inst mlxsw_sp_afk_element_info_ipv6_2b[] = {
diff --git a/drivers/net/ipvlan/ipvlan_main.c b/drivers/net/ipvlan/ipvlan_main.c
index 796a38f9d7b2..cd16bc8bf154 100644
--- a/drivers/net/ipvlan/ipvlan_main.c
+++ b/drivers/net/ipvlan/ipvlan_main.c
@@ -748,7 +748,8 @@ static int ipvlan_device_event(struct notifier_block *unused,

write_pnet(&port->pnet, newnet);

- ipvlan_migrate_l3s_hook(oldnet, newnet);
+ if (port->mode == IPVLAN_MODE_L3S)
+ ipvlan_migrate_l3s_hook(oldnet, newnet);
break;
}
case NETDEV_UNREGISTER:
diff --git a/drivers/net/veth.c b/drivers/net/veth.c
index a71786b3e7ba..727b9278b9fe 100644
--- a/drivers/net/veth.c
+++ b/drivers/net/veth.c
@@ -1716,10 +1716,7 @@ static int veth_newlink(struct net *src_net, struct net_device *dev,

nla_peer = data[VETH_INFO_PEER];
ifmp = nla_data(nla_peer);
- err = rtnl_nla_parse_ifla(peer_tb,
- nla_data(nla_peer) + sizeof(struct ifinfomsg),
- nla_len(nla_peer) - sizeof(struct ifinfomsg),
- NULL);
+ err = rtnl_nla_parse_ifinfomsg(peer_tb, nla_peer, extack);
if (err < 0)
return err;

diff --git a/drivers/of/dynamic.c b/drivers/of/dynamic.c
index cd3821a6444f..4e436f2d13ae 100644
--- a/drivers/of/dynamic.c
+++ b/drivers/of/dynamic.c
@@ -63,15 +63,14 @@ int of_reconfig_notifier_unregister(struct notifier_block *nb)
}
EXPORT_SYMBOL_GPL(of_reconfig_notifier_unregister);

-#ifdef DEBUG
-const char *action_names[] = {
+static const char *action_names[] = {
+ [0] = "INVALID",
[OF_RECONFIG_ATTACH_NODE] = "ATTACH_NODE",
[OF_RECONFIG_DETACH_NODE] = "DETACH_NODE",
[OF_RECONFIG_ADD_PROPERTY] = "ADD_PROPERTY",
[OF_RECONFIG_REMOVE_PROPERTY] = "REMOVE_PROPERTY",
[OF_RECONFIG_UPDATE_PROPERTY] = "UPDATE_PROPERTY",
};
-#endif

int of_reconfig_notify(unsigned long action, struct of_reconfig_data *p)
{
@@ -594,21 +593,9 @@ static int __of_changeset_entry_apply(struct of_changeset_entry *ce)
}

ret = __of_add_property(ce->np, ce->prop);
- if (ret) {
- pr_err("changeset: add_property failed @%pOF/%s\n",
- ce->np,
- ce->prop->name);
- break;
- }
break;
case OF_RECONFIG_REMOVE_PROPERTY:
ret = __of_remove_property(ce->np, ce->prop);
- if (ret) {
- pr_err("changeset: remove_property failed @%pOF/%s\n",
- ce->np,
- ce->prop->name);
- break;
- }
break;

case OF_RECONFIG_UPDATE_PROPERTY:
@@ -622,20 +609,17 @@ static int __of_changeset_entry_apply(struct of_changeset_entry *ce)
}

ret = __of_update_property(ce->np, ce->prop, &old_prop);
- if (ret) {
- pr_err("changeset: update_property failed @%pOF/%s\n",
- ce->np,
- ce->prop->name);
- break;
- }
break;
default:
ret = -EINVAL;
}
raw_spin_unlock_irqrestore(&devtree_lock, flags);

- if (ret)
+ if (ret) {
+ pr_err("changeset: apply failed: %-15s %pOF:%s\n",
+ action_names[ce->action], ce->np, ce->prop->name);
return ret;
+ }

switch (ce->action) {
case OF_RECONFIG_ATTACH_NODE:
@@ -921,6 +905,9 @@ int of_changeset_action(struct of_changeset *ocs, unsigned long action,
if (!ce)
return -ENOMEM;

+ if (WARN_ON(action >= ARRAY_SIZE(action_names)))
+ return -EINVAL;
+
/* get a reference to the node */
ce->action = action;
ce->np = of_node_get(np);
diff --git a/drivers/of/kexec.c b/drivers/of/kexec.c
index f26d2ba8a371..68278340cecf 100644
--- a/drivers/of/kexec.c
+++ b/drivers/of/kexec.c
@@ -184,7 +184,8 @@ int __init ima_free_kexec_buffer(void)
if (ret)
return ret;

- return memblock_phys_free(addr, size);
+ memblock_free_late(addr, size);
+ return 0;
}
#endif

diff --git a/drivers/of/unittest.c b/drivers/of/unittest.c
index b89ab5d9fea5..9be6ed47a1ce 100644
--- a/drivers/of/unittest.c
+++ b/drivers/of/unittest.c
@@ -657,12 +657,12 @@ static void __init of_unittest_parse_phandle_with_args_map(void)
memset(&args, 0, sizeof(args));

EXPECT_BEGIN(KERN_INFO,
- "OF: /testcase-data/phandle-tests/consumer-b: could not find phandle");
+ "OF: /testcase-data/phandle-tests/consumer-b: could not find phandle 12345678");

rc = of_parse_phandle_with_args_map(np, "phandle-list-bad-phandle",
"phandle", 0, &args);
EXPECT_END(KERN_INFO,
- "OF: /testcase-data/phandle-tests/consumer-b: could not find phandle");
+ "OF: /testcase-data/phandle-tests/consumer-b: could not find phandle 12345678");

unittest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc);

diff --git a/drivers/pci/hotplug/acpiphp_glue.c b/drivers/pci/hotplug/acpiphp_glue.c
index 6efa3d8db9a5..ea0195337bab 100644
--- a/drivers/pci/hotplug/acpiphp_glue.c
+++ b/drivers/pci/hotplug/acpiphp_glue.c
@@ -504,12 +504,15 @@ static void enable_slot(struct acpiphp_slot *slot, bool bridge)
if (pass && dev->subordinate) {
check_hotplug_bridge(slot, dev);
pcibios_resource_survey_bus(dev->subordinate);
- __pci_bus_size_bridges(dev->subordinate,
- &add_list);
+ if (pci_is_root_bus(bus))
+ __pci_bus_size_bridges(dev->subordinate, &add_list);
}
}
}
- __pci_bus_assign_resources(bus, &add_list, NULL);
+ if (pci_is_root_bus(bus))
+ __pci_bus_assign_resources(bus, &add_list, NULL);
+ else
+ pci_assign_unassigned_bridge_resources(bus->self);
}

acpiphp_sanitize_bus(bus);
diff --git a/drivers/pinctrl/pinctrl-amd.c b/drivers/pinctrl/pinctrl-amd.c
index a8df77e80549..be6838c252f0 100644
--- a/drivers/pinctrl/pinctrl-amd.c
+++ b/drivers/pinctrl/pinctrl-amd.c
@@ -862,6 +862,33 @@ static const struct pinconf_ops amd_pinconf_ops = {
.pin_config_group_set = amd_pinconf_group_set,
};

+static void amd_gpio_irq_init(struct amd_gpio *gpio_dev)
+{
+ struct pinctrl_desc *desc = gpio_dev->pctrl->desc;
+ unsigned long flags;
+ u32 pin_reg, mask;
+ int i;
+
+ mask = BIT(WAKE_CNTRL_OFF_S0I3) | BIT(WAKE_CNTRL_OFF_S3) |
+ BIT(WAKE_CNTRL_OFF_S4);
+
+ for (i = 0; i < desc->npins; i++) {
+ int pin = desc->pins[i].number;
+ const struct pin_desc *pd = pin_desc_get(gpio_dev->pctrl, pin);
+
+ if (!pd)
+ continue;
+
+ raw_spin_lock_irqsave(&gpio_dev->lock, flags);
+
+ pin_reg = readl(gpio_dev->base + pin * 4);
+ pin_reg &= ~mask;
+ writel(pin_reg, gpio_dev->base + pin * 4);
+
+ raw_spin_unlock_irqrestore(&gpio_dev->lock, flags);
+ }
+}
+
#ifdef CONFIG_PM_SLEEP
static bool amd_gpio_should_save(struct amd_gpio *gpio_dev, unsigned int pin)
{
@@ -1099,6 +1126,9 @@ static int amd_gpio_probe(struct platform_device *pdev)
return PTR_ERR(gpio_dev->pctrl);
}

+ /* Disable and mask interrupts */
+ amd_gpio_irq_init(gpio_dev);
+
girq = &gpio_dev->gc.irq;
gpio_irq_chip_set_chip(girq, &amd_gpio_irqchip);
/* This will let us handle the parent IRQ in the driver */
diff --git a/drivers/pinctrl/renesas/pinctrl-rza2.c b/drivers/pinctrl/renesas/pinctrl-rza2.c
index c0a04f1ee994..12126e30dc20 100644
--- a/drivers/pinctrl/renesas/pinctrl-rza2.c
+++ b/drivers/pinctrl/renesas/pinctrl-rza2.c
@@ -14,6 +14,7 @@
#include <linux/gpio/driver.h>
#include <linux/io.h>
#include <linux/module.h>
+#include <linux/mutex.h>
#include <linux/of_device.h>
#include <linux/pinctrl/pinmux.h>

@@ -46,6 +47,7 @@ struct rza2_pinctrl_priv {
struct pinctrl_dev *pctl;
struct pinctrl_gpio_range gpio_range;
int npins;
+ struct mutex mutex; /* serialize adding groups and functions */
};

#define RZA2_PDR(port) (0x0000 + (port) * 2) /* Direction 16-bit */
@@ -358,10 +360,14 @@ static int rza2_dt_node_to_map(struct pinctrl_dev *pctldev,
psel_val[i] = MUX_FUNC(value);
}

+ mutex_lock(&priv->mutex);
+
/* Register a single pin group listing all the pins we read from DT */
gsel = pinctrl_generic_add_group(pctldev, np->name, pins, npins, NULL);
- if (gsel < 0)
- return gsel;
+ if (gsel < 0) {
+ ret = gsel;
+ goto unlock;
+ }

/*
* Register a single group function where the 'data' is an array PSEL
@@ -390,6 +396,8 @@ static int rza2_dt_node_to_map(struct pinctrl_dev *pctldev,
(*map)->data.mux.function = np->name;
*num_maps = 1;

+ mutex_unlock(&priv->mutex);
+
return 0;

remove_function:
@@ -398,6 +406,9 @@ static int rza2_dt_node_to_map(struct pinctrl_dev *pctldev,
remove_group:
pinctrl_generic_remove_group(pctldev, gsel);

+unlock:
+ mutex_unlock(&priv->mutex);
+
dev_err(priv->dev, "Unable to parse DT node %s\n", np->name);

return ret;
@@ -473,6 +484,8 @@ static int rza2_pinctrl_probe(struct platform_device *pdev)
if (IS_ERR(priv->base))
return PTR_ERR(priv->base);

+ mutex_init(&priv->mutex);
+
platform_set_drvdata(pdev, priv);

priv->npins = (int)(uintptr_t)of_device_get_match_data(&pdev->dev) *
diff --git a/drivers/pinctrl/renesas/pinctrl-rzg2l.c b/drivers/pinctrl/renesas/pinctrl-rzg2l.c
index fd11d28e5a1e..2a617832a7e6 100644
--- a/drivers/pinctrl/renesas/pinctrl-rzg2l.c
+++ b/drivers/pinctrl/renesas/pinctrl-rzg2l.c
@@ -11,6 +11,7 @@
#include <linux/io.h>
#include <linux/interrupt.h>
#include <linux/module.h>
+#include <linux/mutex.h>
#include <linux/of_device.h>
#include <linux/of_irq.h>
#include <linux/pinctrl/pinconf-generic.h>
@@ -146,10 +147,11 @@ struct rzg2l_pinctrl {
struct gpio_chip gpio_chip;
struct pinctrl_gpio_range gpio_range;
DECLARE_BITMAP(tint_slot, RZG2L_TINT_MAX_INTERRUPT);
- spinlock_t bitmap_lock;
+ spinlock_t bitmap_lock; /* protect tint_slot bitmap */
unsigned int hwirq[RZG2L_TINT_MAX_INTERRUPT];

- spinlock_t lock;
+ spinlock_t lock; /* lock read/write registers */
+ struct mutex mutex; /* serialize adding groups and functions */
};

static const unsigned int iolh_groupa_mA[] = { 2, 4, 8, 12 };
@@ -359,11 +361,13 @@ static int rzg2l_dt_subnode_to_map(struct pinctrl_dev *pctldev,
name = np->name;
}

+ mutex_lock(&pctrl->mutex);
+
/* Register a single pin group listing all the pins we read from DT */
gsel = pinctrl_generic_add_group(pctldev, name, pins, num_pinmux, NULL);
if (gsel < 0) {
ret = gsel;
- goto done;
+ goto unlock;
}

/*
@@ -377,6 +381,8 @@ static int rzg2l_dt_subnode_to_map(struct pinctrl_dev *pctldev,
goto remove_group;
}

+ mutex_unlock(&pctrl->mutex);
+
maps[idx].type = PIN_MAP_TYPE_MUX_GROUP;
maps[idx].data.mux.group = name;
maps[idx].data.mux.function = name;
@@ -388,6 +394,8 @@ static int rzg2l_dt_subnode_to_map(struct pinctrl_dev *pctldev,

remove_group:
pinctrl_generic_remove_group(pctldev, gsel);
+unlock:
+ mutex_unlock(&pctrl->mutex);
done:
*index = idx;
kfree(configs);
@@ -1501,6 +1509,7 @@ static int rzg2l_pinctrl_probe(struct platform_device *pdev)

spin_lock_init(&pctrl->lock);
spin_lock_init(&pctrl->bitmap_lock);
+ mutex_init(&pctrl->mutex);

platform_set_drvdata(pdev, pctrl);

diff --git a/drivers/pinctrl/renesas/pinctrl-rzv2m.c b/drivers/pinctrl/renesas/pinctrl-rzv2m.c
index 35f382b055e8..2858800288bb 100644
--- a/drivers/pinctrl/renesas/pinctrl-rzv2m.c
+++ b/drivers/pinctrl/renesas/pinctrl-rzv2m.c
@@ -14,6 +14,7 @@
#include <linux/gpio/driver.h>
#include <linux/io.h>
#include <linux/module.h>
+#include <linux/mutex.h>
#include <linux/of_device.h>
#include <linux/pinctrl/pinconf-generic.h>
#include <linux/pinctrl/pinconf.h>
@@ -121,7 +122,8 @@ struct rzv2m_pinctrl {
struct gpio_chip gpio_chip;
struct pinctrl_gpio_range gpio_range;

- spinlock_t lock;
+ spinlock_t lock; /* lock read/write registers */
+ struct mutex mutex; /* serialize adding groups and functions */
};

static const unsigned int drv_1_8V_group2_uA[] = { 1800, 3800, 7800, 11000 };
@@ -320,11 +322,13 @@ static int rzv2m_dt_subnode_to_map(struct pinctrl_dev *pctldev,
name = np->name;
}

+ mutex_lock(&pctrl->mutex);
+
/* Register a single pin group listing all the pins we read from DT */
gsel = pinctrl_generic_add_group(pctldev, name, pins, num_pinmux, NULL);
if (gsel < 0) {
ret = gsel;
- goto done;
+ goto unlock;
}

/*
@@ -338,6 +342,8 @@ static int rzv2m_dt_subnode_to_map(struct pinctrl_dev *pctldev,
goto remove_group;
}

+ mutex_unlock(&pctrl->mutex);
+
maps[idx].type = PIN_MAP_TYPE_MUX_GROUP;
maps[idx].data.mux.group = name;
maps[idx].data.mux.function = name;
@@ -349,6 +355,8 @@ static int rzv2m_dt_subnode_to_map(struct pinctrl_dev *pctldev,

remove_group:
pinctrl_generic_remove_group(pctldev, gsel);
+unlock:
+ mutex_unlock(&pctrl->mutex);
done:
*index = idx;
kfree(configs);
@@ -1070,6 +1078,7 @@ static int rzv2m_pinctrl_probe(struct platform_device *pdev)
}

spin_lock_init(&pctrl->lock);
+ mutex_init(&pctrl->mutex);

platform_set_drvdata(pdev, pctrl);

diff --git a/drivers/platform/x86/ideapad-laptop.c b/drivers/platform/x86/ideapad-laptop.c
index bd38c7dcae34..de03b8889e9d 100644
--- a/drivers/platform/x86/ideapad-laptop.c
+++ b/drivers/platform/x86/ideapad-laptop.c
@@ -1176,6 +1176,11 @@ static const struct key_entry ideapad_keymap[] = {
{ KE_IGNORE, 0x03 | IDEAPAD_WMI_KEY },
/* Customizable Lenovo Hotkey ("star" with 'S' inside) */
{ KE_KEY, 0x01 | IDEAPAD_WMI_KEY, { KEY_FAVORITES } },
+ { KE_KEY, 0x04 | IDEAPAD_WMI_KEY, { KEY_SELECTIVE_SCREENSHOT } },
+ /* Lenovo Support */
+ { KE_KEY, 0x07 | IDEAPAD_WMI_KEY, { KEY_HELP } },
+ { KE_KEY, 0x0e | IDEAPAD_WMI_KEY, { KEY_PICKUP_PHONE } },
+ { KE_KEY, 0x0f | IDEAPAD_WMI_KEY, { KEY_HANGUP_PHONE } },
/* Dark mode toggle */
{ KE_KEY, 0x13 | IDEAPAD_WMI_KEY, { KEY_PROG1 } },
/* Sound profile switch */
diff --git a/drivers/s390/crypto/zcrypt_msgtype6.c b/drivers/s390/crypto/zcrypt_msgtype6.c
index f99a9ef42116..84e3ad290f6b 100644
--- a/drivers/s390/crypto/zcrypt_msgtype6.c
+++ b/drivers/s390/crypto/zcrypt_msgtype6.c
@@ -926,8 +926,7 @@ static void zcrypt_msgtype6_receive(struct ap_queue *aq,
.type = TYPE82_RSP_CODE,
.reply_code = REP82_ERROR_MACHINE_FAILURE,
};
- struct response_type *resp_type =
- (struct response_type *)msg->private;
+ struct response_type *resp_type = msg->private;
struct type86x_reply *t86r;
int len;

@@ -982,8 +981,7 @@ static void zcrypt_msgtype6_receive_ep11(struct ap_queue *aq,
.type = TYPE82_RSP_CODE,
.reply_code = REP82_ERROR_MACHINE_FAILURE,
};
- struct response_type *resp_type =
- (struct response_type *)msg->private;
+ struct response_type *resp_type = msg->private;
struct type86_ep11_reply *t86r;
int len;

@@ -1156,23 +1154,36 @@ static long zcrypt_msgtype6_send_cprb(bool userspace, struct zcrypt_queue *zq,
struct ica_xcRB *xcrb,
struct ap_message *ap_msg)
{
- int rc;
- struct response_type *rtype = (struct response_type *)(ap_msg->private);
+ struct response_type *rtype = ap_msg->private;
struct {
struct type6_hdr hdr;
struct CPRBX cprbx;
/* ... more data blocks ... */
} __packed * msg = ap_msg->msg;
-
- /*
- * Set the queue's reply buffer length minus 128 byte padding
- * as reply limit for the card firmware.
- */
- msg->hdr.fromcardlen1 = min_t(unsigned int, msg->hdr.fromcardlen1,
- zq->reply.bufsize - 128);
- if (msg->hdr.fromcardlen2)
- msg->hdr.fromcardlen2 =
- zq->reply.bufsize - msg->hdr.fromcardlen1 - 128;
+ unsigned int max_payload_size;
+ int rc, delta;
+
+ /* calculate maximum payload for this card and msg type */
+ max_payload_size = zq->reply.bufsize - sizeof(struct type86_fmt2_msg);
+
+ /* limit each of the two from fields to the maximum payload size */
+ msg->hdr.fromcardlen1 = min(msg->hdr.fromcardlen1, max_payload_size);
+ msg->hdr.fromcardlen2 = min(msg->hdr.fromcardlen2, max_payload_size);
+
+ /* calculate delta if the sum of both exceeds max payload size */
+ delta = msg->hdr.fromcardlen1 + msg->hdr.fromcardlen2
+ - max_payload_size;
+ if (delta > 0) {
+ /*
+ * Sum exceeds maximum payload size, prune fromcardlen1
+ * (always trust fromcardlen2)
+ */
+ if (delta > msg->hdr.fromcardlen1) {
+ rc = -EINVAL;
+ goto out;
+ }
+ msg->hdr.fromcardlen1 -= delta;
+ }

init_completion(&rtype->work);
rc = ap_queue_message(zq->queue, ap_msg);
@@ -1243,7 +1254,7 @@ static long zcrypt_msgtype6_send_ep11_cprb(bool userspace, struct zcrypt_queue *
{
int rc;
unsigned int lfmt;
- struct response_type *rtype = (struct response_type *)(ap_msg->private);
+ struct response_type *rtype = ap_msg->private;
struct {
struct type6_hdr hdr;
struct ep11_cprb cprbx;
@@ -1365,7 +1376,7 @@ static long zcrypt_msgtype6_rng(struct zcrypt_queue *zq,
short int verb_length;
short int key_length;
} __packed * msg = ap_msg->msg;
- struct response_type *rtype = (struct response_type *)(ap_msg->private);
+ struct response_type *rtype = ap_msg->private;
int rc;

msg->cprbx.domain = AP_QID_QUEUE(zq->queue->qid);
diff --git a/drivers/scsi/raid_class.c b/drivers/scsi/raid_class.c
index 711252e52d8e..95a86e0dfd77 100644
--- a/drivers/scsi/raid_class.c
+++ b/drivers/scsi/raid_class.c
@@ -209,54 +209,6 @@ raid_attr_ro_state(level);
raid_attr_ro_fn(resync);
raid_attr_ro_state_fn(state);

-static void raid_component_release(struct device *dev)
-{
- struct raid_component *rc =
- container_of(dev, struct raid_component, dev);
- dev_printk(KERN_ERR, rc->dev.parent, "COMPONENT RELEASE\n");
- put_device(rc->dev.parent);
- kfree(rc);
-}
-
-int raid_component_add(struct raid_template *r,struct device *raid_dev,
- struct device *component_dev)
-{
- struct device *cdev =
- attribute_container_find_class_device(&r->raid_attrs.ac,
- raid_dev);
- struct raid_component *rc;
- struct raid_data *rd = dev_get_drvdata(cdev);
- int err;
-
- rc = kzalloc(sizeof(*rc), GFP_KERNEL);
- if (!rc)
- return -ENOMEM;
-
- INIT_LIST_HEAD(&rc->node);
- device_initialize(&rc->dev);
- rc->dev.release = raid_component_release;
- rc->dev.parent = get_device(component_dev);
- rc->num = rd->component_count++;
-
- dev_set_name(&rc->dev, "component-%d", rc->num);
- list_add_tail(&rc->node, &rd->component_list);
- rc->dev.class = &raid_class.class;
- err = device_add(&rc->dev);
- if (err)
- goto err_out;
-
- return 0;
-
-err_out:
- put_device(&rc->dev);
- list_del(&rc->node);
- rd->component_count--;
- put_device(component_dev);
- kfree(rc);
- return err;
-}
-EXPORT_SYMBOL(raid_component_add);
-
struct raid_template *
raid_class_attach(struct raid_function_template *ft)
{
diff --git a/drivers/scsi/snic/snic_disc.c b/drivers/scsi/snic/snic_disc.c
index cd27562ec922..6c529b37f3b4 100644
--- a/drivers/scsi/snic/snic_disc.c
+++ b/drivers/scsi/snic/snic_disc.c
@@ -303,12 +303,11 @@ snic_tgt_create(struct snic *snic, struct snic_tgt_id *tgtid)
"Snic Tgt: device_add, with err = %d\n",
ret);

- put_device(&tgt->dev);
put_device(&snic->shost->shost_gendev);
spin_lock_irqsave(snic->shost->host_lock, flags);
list_del(&tgt->list);
spin_unlock_irqrestore(snic->shost->host_lock, flags);
- kfree(tgt);
+ put_device(&tgt->dev);
tgt = NULL;

return tgt;
diff --git a/drivers/thunderbolt/tmu.c b/drivers/thunderbolt/tmu.c
index 626aca3124b1..d9544600b386 100644
--- a/drivers/thunderbolt/tmu.c
+++ b/drivers/thunderbolt/tmu.c
@@ -415,7 +415,8 @@ int tb_switch_tmu_disable(struct tb_switch *sw)
* uni-directional mode and we don't want to change it's TMU
* mode.
*/
- tb_switch_tmu_rate_write(sw, TB_SWITCH_TMU_RATE_OFF);
+ ret = tb_switch_tmu_rate_write(sw, TB_SWITCH_TMU_RATE_OFF);
+ return ret;

tb_port_tmu_time_sync_disable(up);
ret = tb_port_tmu_time_sync_disable(down);
diff --git a/drivers/video/aperture.c b/drivers/video/aperture.c
index 5c94abdb1ad6..3e4a1f55f51b 100644
--- a/drivers/video/aperture.c
+++ b/drivers/video/aperture.c
@@ -298,14 +298,6 @@ int aperture_remove_conflicting_devices(resource_size_t base, resource_size_t si

aperture_detach_devices(base, size);

- /*
- * If this is the primary adapter, there could be a VGA device
- * that consumes the VGA framebuffer I/O range. Remove this device
- * as well.
- */
- if (primary)
- aperture_detach_devices(VGA_FB_PHYS_BASE, VGA_FB_PHYS_SIZE);
-
return 0;
}
EXPORT_SYMBOL(aperture_remove_conflicting_devices);
@@ -344,13 +336,22 @@ int aperture_remove_conflicting_pci_devices(struct pci_dev *pdev, const char *na
aperture_detach_devices(base, size);
}

- /*
- * WARNING: Apparently we must kick fbdev drivers before vgacon,
- * otherwise the vga fbdev driver falls over.
- */
- ret = vga_remove_vgacon(pdev);
- if (ret)
- return ret;
+ if (primary) {
+ /*
+ * If this is the primary adapter, there could be a VGA device
+ * that consumes the VGA framebuffer I/O range. Remove this
+ * device as well.
+ */
+ aperture_detach_devices(VGA_FB_PHYS_BASE, VGA_FB_PHYS_SIZE);
+
+ /*
+ * WARNING: Apparently we must kick fbdev drivers before vgacon,
+ * otherwise the vga fbdev driver falls over.
+ */
+ ret = vga_remove_vgacon(pdev);
+ if (ret)
+ return ret;
+ }

return 0;

diff --git a/drivers/video/fbdev/aty/radeon_base.c b/drivers/video/fbdev/aty/radeon_base.c
index 8b28c9bddd97..50c384ce2883 100644
--- a/drivers/video/fbdev/aty/radeon_base.c
+++ b/drivers/video/fbdev/aty/radeon_base.c
@@ -2238,14 +2238,6 @@ static const struct bin_attribute edid2_attr = {
.read = radeon_show_edid2,
};

-static int radeon_kick_out_firmware_fb(struct pci_dev *pdev)
-{
- resource_size_t base = pci_resource_start(pdev, 0);
- resource_size_t size = pci_resource_len(pdev, 0);
-
- return aperture_remove_conflicting_devices(base, size, false, KBUILD_MODNAME);
-}
-
static int radeonfb_pci_register(struct pci_dev *pdev,
const struct pci_device_id *ent)
{
@@ -2296,7 +2288,7 @@ static int radeonfb_pci_register(struct pci_dev *pdev,
rinfo->fb_base_phys = pci_resource_start (pdev, 0);
rinfo->mmio_base_phys = pci_resource_start (pdev, 2);

- ret = radeon_kick_out_firmware_fb(pdev);
+ ret = aperture_remove_conflicting_pci_devices(pdev, KBUILD_MODNAME);
if (ret)
goto err_release_fb;

diff --git a/fs/attr.c b/fs/attr.c
index b45f30e516fa..9b9a70e0cc54 100644
--- a/fs/attr.c
+++ b/fs/attr.c
@@ -47,6 +47,7 @@ int setattr_should_drop_sgid(struct user_namespace *mnt_userns,
return ATTR_KILL_SGID;
return 0;
}
+EXPORT_SYMBOL(setattr_should_drop_sgid);

/**
* setattr_should_drop_suidgid - determine whether the set{g,u}id bit needs to
diff --git a/fs/internal.h b/fs/internal.h
index 46caa33373a4..42df013f7fe7 100644
--- a/fs/internal.h
+++ b/fs/internal.h
@@ -242,5 +242,3 @@ ssize_t __kernel_write_iter(struct file *file, struct iov_iter *from, loff_t *po
/*
* fs/attr.c
*/
-int setattr_should_drop_sgid(struct user_namespace *mnt_userns,
- const struct inode *inode);
diff --git a/fs/jbd2/checkpoint.c b/fs/jbd2/checkpoint.c
index c4e0da6db719..9ec91017a7f3 100644
--- a/fs/jbd2/checkpoint.c
+++ b/fs/jbd2/checkpoint.c
@@ -27,7 +27,7 @@
*
* Called with j_list_lock held.
*/
-static inline void __buffer_unlink_first(struct journal_head *jh)
+static inline void __buffer_unlink(struct journal_head *jh)
{
transaction_t *transaction = jh->b_cp_transaction;

@@ -40,23 +40,6 @@ static inline void __buffer_unlink_first(struct journal_head *jh)
}
}

-/*
- * Unlink a buffer from a transaction checkpoint(io) list.
- *
- * Called with j_list_lock held.
- */
-static inline void __buffer_unlink(struct journal_head *jh)
-{
- transaction_t *transaction = jh->b_cp_transaction;
-
- __buffer_unlink_first(jh);
- if (transaction->t_checkpoint_io_list == jh) {
- transaction->t_checkpoint_io_list = jh->b_cpnext;
- if (transaction->t_checkpoint_io_list == jh)
- transaction->t_checkpoint_io_list = NULL;
- }
-}
-
/*
* Check a checkpoint buffer could be release or not.
*
@@ -366,50 +349,10 @@ int jbd2_cleanup_journal_tail(journal_t *journal)

/* Checkpoint list management */

-/*
- * journal_clean_one_cp_list
- *
- * Find all the written-back checkpoint buffers in the given list and
- * release them. If 'destroy' is set, clean all buffers unconditionally.
- *
- * Called with j_list_lock held.
- * Returns 1 if we freed the transaction, 0 otherwise.
- */
-static int journal_clean_one_cp_list(struct journal_head *jh, bool destroy)
-{
- struct journal_head *last_jh;
- struct journal_head *next_jh = jh;
-
- if (!jh)
- return 0;
-
- last_jh = jh->b_cpprev;
- do {
- jh = next_jh;
- next_jh = jh->b_cpnext;
-
- if (!destroy && __cp_buffer_busy(jh))
- return 0;
-
- if (__jbd2_journal_remove_checkpoint(jh))
- return 1;
- /*
- * This function only frees up some memory
- * if possible so we dont have an obligation
- * to finish processing. Bail out if preemption
- * requested:
- */
- if (need_resched())
- return 0;
- } while (jh != last_jh);
-
- return 0;
-}
-
/*
* journal_shrink_one_cp_list
*
- * Find 'nr_to_scan' written-back checkpoint buffers in the given list
+ * Find all the written-back checkpoint buffers in the given list
* and try to release them. If the whole transaction is released, set
* the 'released' parameter. Return the number of released checkpointed
* buffers.
@@ -417,15 +360,15 @@ static int journal_clean_one_cp_list(struct journal_head *jh, bool destroy)
* Called with j_list_lock held.
*/
static unsigned long journal_shrink_one_cp_list(struct journal_head *jh,
- unsigned long *nr_to_scan,
- bool *released)
+ bool destroy, bool *released)
{
struct journal_head *last_jh;
struct journal_head *next_jh = jh;
unsigned long nr_freed = 0;
int ret;

- if (!jh || *nr_to_scan == 0)
+ *released = false;
+ if (!jh)
return 0;

last_jh = jh->b_cpprev;
@@ -433,12 +376,15 @@ static unsigned long journal_shrink_one_cp_list(struct journal_head *jh,
jh = next_jh;
next_jh = jh->b_cpnext;

- (*nr_to_scan)--;
- if (__cp_buffer_busy(jh))
- continue;
+ if (destroy) {
+ ret = __jbd2_journal_remove_checkpoint(jh);
+ } else {
+ ret = jbd2_journal_try_remove_checkpoint(jh);
+ if (ret < 0)
+ continue;
+ }

nr_freed++;
- ret = __jbd2_journal_remove_checkpoint(jh);
if (ret) {
*released = true;
break;
@@ -446,7 +392,7 @@ static unsigned long journal_shrink_one_cp_list(struct journal_head *jh,

if (need_resched())
break;
- } while (jh != last_jh && *nr_to_scan);
+ } while (jh != last_jh);

return nr_freed;
}
@@ -464,11 +410,11 @@ unsigned long jbd2_journal_shrink_checkpoint_list(journal_t *journal,
unsigned long *nr_to_scan)
{
transaction_t *transaction, *last_transaction, *next_transaction;
- bool released;
+ bool __maybe_unused released;
tid_t first_tid = 0, last_tid = 0, next_tid = 0;
tid_t tid = 0;
unsigned long nr_freed = 0;
- unsigned long nr_scanned = *nr_to_scan;
+ unsigned long freed;

again:
spin_lock(&journal->j_list_lock);
@@ -497,19 +443,11 @@ unsigned long jbd2_journal_shrink_checkpoint_list(journal_t *journal,
transaction = next_transaction;
next_transaction = transaction->t_cpnext;
tid = transaction->t_tid;
- released = false;

- nr_freed += journal_shrink_one_cp_list(transaction->t_checkpoint_list,
- nr_to_scan, &released);
- if (*nr_to_scan == 0)
- break;
- if (need_resched() || spin_needbreak(&journal->j_list_lock))
- break;
- if (released)
- continue;
-
- nr_freed += journal_shrink_one_cp_list(transaction->t_checkpoint_io_list,
- nr_to_scan, &released);
+ freed = journal_shrink_one_cp_list(transaction->t_checkpoint_list,
+ false, &released);
+ nr_freed += freed;
+ (*nr_to_scan) -= min(*nr_to_scan, freed);
if (*nr_to_scan == 0)
break;
if (need_resched() || spin_needbreak(&journal->j_list_lock))
@@ -530,9 +468,8 @@ unsigned long jbd2_journal_shrink_checkpoint_list(journal_t *journal,
if (*nr_to_scan && next_tid)
goto again;
out:
- nr_scanned -= *nr_to_scan;
trace_jbd2_shrink_checkpoint_list(journal, first_tid, tid, last_tid,
- nr_freed, nr_scanned, next_tid);
+ nr_freed, next_tid);

return nr_freed;
}
@@ -548,7 +485,7 @@ unsigned long jbd2_journal_shrink_checkpoint_list(journal_t *journal,
void __jbd2_journal_clean_checkpoint_list(journal_t *journal, bool destroy)
{
transaction_t *transaction, *last_transaction, *next_transaction;
- int ret;
+ bool released;

transaction = journal->j_checkpoint_transactions;
if (!transaction)
@@ -559,8 +496,8 @@ void __jbd2_journal_clean_checkpoint_list(journal_t *journal, bool destroy)
do {
transaction = next_transaction;
next_transaction = transaction->t_cpnext;
- ret = journal_clean_one_cp_list(transaction->t_checkpoint_list,
- destroy);
+ journal_shrink_one_cp_list(transaction->t_checkpoint_list,
+ destroy, &released);
/*
* This function only frees up some memory if possible so we
* dont have an obligation to finish processing. Bail out if
@@ -568,23 +505,12 @@ void __jbd2_journal_clean_checkpoint_list(journal_t *journal, bool destroy)
*/
if (need_resched())
return;
- if (ret)
- continue;
- /*
- * It is essential that we are as careful as in the case of
- * t_checkpoint_list with removing the buffer from the list as
- * we can possibly see not yet submitted buffers on io_list
- */
- ret = journal_clean_one_cp_list(transaction->
- t_checkpoint_io_list, destroy);
- if (need_resched())
- return;
/*
* Stop scanning if we couldn't free the transaction. This
* avoids pointless scanning of transactions which still
* weren't checkpointed.
*/
- if (!ret)
+ if (!released)
return;
} while (transaction != last_transaction);
}
@@ -663,7 +589,7 @@ int __jbd2_journal_remove_checkpoint(struct journal_head *jh)
jbd2_journal_put_journal_head(jh);

/* Is this transaction empty? */
- if (transaction->t_checkpoint_list || transaction->t_checkpoint_io_list)
+ if (transaction->t_checkpoint_list)
return 0;

/*
@@ -694,6 +620,34 @@ int __jbd2_journal_remove_checkpoint(struct journal_head *jh)
return 1;
}

+/*
+ * Check the checkpoint buffer and try to remove it from the checkpoint
+ * list if it's clean. Returns -EBUSY if it is not clean, returns 1 if
+ * it frees the transaction, 0 otherwise.
+ *
+ * This function is called with j_list_lock held.
+ */
+int jbd2_journal_try_remove_checkpoint(struct journal_head *jh)
+{
+ struct buffer_head *bh = jh2bh(jh);
+
+ if (!trylock_buffer(bh))
+ return -EBUSY;
+ if (buffer_dirty(bh)) {
+ unlock_buffer(bh);
+ return -EBUSY;
+ }
+ unlock_buffer(bh);
+
+ /*
+ * Buffer is clean and the IO has finished (we held the buffer
+ * lock) so the checkpoint is done. We can safely remove the
+ * buffer from this transaction.
+ */
+ JBUFFER_TRACE(jh, "remove from checkpoint list");
+ return __jbd2_journal_remove_checkpoint(jh);
+}
+
/*
* journal_insert_checkpoint: put a committed buffer onto a checkpoint
* list so that we know when it is safe to clean the transaction out of
@@ -755,7 +709,6 @@ void __jbd2_journal_drop_transaction(journal_t *journal, transaction_t *transact
J_ASSERT(transaction->t_forget == NULL);
J_ASSERT(transaction->t_shadow_list == NULL);
J_ASSERT(transaction->t_checkpoint_list == NULL);
- J_ASSERT(transaction->t_checkpoint_io_list == NULL);
J_ASSERT(atomic_read(&transaction->t_updates) == 0);
J_ASSERT(journal->j_committing_transaction != transaction);
J_ASSERT(journal->j_running_transaction != transaction);
diff --git a/fs/jbd2/commit.c b/fs/jbd2/commit.c
index 885a7a6cc53e..f1d9db6686e3 100644
--- a/fs/jbd2/commit.c
+++ b/fs/jbd2/commit.c
@@ -1171,8 +1171,7 @@ void jbd2_journal_commit_transaction(journal_t *journal)
spin_lock(&journal->j_list_lock);
commit_transaction->t_state = T_FINISHED;
/* Check if the transaction can be dropped now that we are finished */
- if (commit_transaction->t_checkpoint_list == NULL &&
- commit_transaction->t_checkpoint_io_list == NULL) {
+ if (commit_transaction->t_checkpoint_list == NULL) {
__jbd2_journal_drop_transaction(journal, commit_transaction);
jbd2_journal_free_transaction(commit_transaction);
}
diff --git a/fs/jbd2/transaction.c b/fs/jbd2/transaction.c
index 18611241f451..6ef5022949c4 100644
--- a/fs/jbd2/transaction.c
+++ b/fs/jbd2/transaction.c
@@ -1784,8 +1784,7 @@ int jbd2_journal_forget(handle_t *handle, struct buffer_head *bh)
* Otherwise, if the buffer has been written to disk,
* it is safe to remove the checkpoint and drop it.
*/
- if (!buffer_dirty(bh)) {
- __jbd2_journal_remove_checkpoint(jh);
+ if (jbd2_journal_try_remove_checkpoint(jh) >= 0) {
spin_unlock(&journal->j_list_lock);
goto drop;
}
@@ -2112,20 +2111,14 @@ __journal_try_to_free_buffer(journal_t *journal, struct buffer_head *bh)

jh = bh2jh(bh);

- if (buffer_locked(bh) || buffer_dirty(bh))
- goto out;
-
if (jh->b_next_transaction != NULL || jh->b_transaction != NULL)
- goto out;
+ return;

spin_lock(&journal->j_list_lock);
- if (jh->b_cp_transaction != NULL) {
- /* written-back checkpointed metadata buffer */
- JBUFFER_TRACE(jh, "remove from checkpoint list");
- __jbd2_journal_remove_checkpoint(jh);
- }
+ /* Remove written-back checkpointed metadata buffer */
+ if (jh->b_cp_transaction != NULL)
+ jbd2_journal_try_remove_checkpoint(jh);
spin_unlock(&journal->j_list_lock);
-out:
return;
}

diff --git a/fs/nfs/direct.c b/fs/nfs/direct.c
index 1707f46b1335..cf34d0c30945 100644
--- a/fs/nfs/direct.c
+++ b/fs/nfs/direct.c
@@ -474,20 +474,26 @@ ssize_t nfs_file_direct_read(struct kiocb *iocb, struct iov_iter *iter,
return result;
}

-static void
-nfs_direct_join_group(struct list_head *list, struct inode *inode)
+static void nfs_direct_join_group(struct list_head *list, struct inode *inode)
{
- struct nfs_page *req, *next;
+ struct nfs_page *req, *subreq;

list_for_each_entry(req, list, wb_list) {
- if (req->wb_head != req || req->wb_this_page == req)
+ if (req->wb_head != req)
continue;
- for (next = req->wb_this_page;
- next != req->wb_head;
- next = next->wb_this_page) {
- nfs_list_remove_request(next);
- nfs_release_request(next);
- }
+ subreq = req->wb_this_page;
+ if (subreq == req)
+ continue;
+ do {
+ /*
+ * Remove subrequests from this list before freeing
+ * them in the call to nfs_join_page_group().
+ */
+ if (!list_empty(&subreq->wb_list)) {
+ nfs_list_remove_request(subreq);
+ nfs_release_request(subreq);
+ }
+ } while ((subreq = subreq->wb_this_page) != req);
nfs_join_page_group(req, inode);
}
}
diff --git a/fs/nfs/inode.c b/fs/nfs/inode.c
index 6b2cfa59a1a2..e0c1fb98f907 100644
--- a/fs/nfs/inode.c
+++ b/fs/nfs/inode.c
@@ -717,9 +717,7 @@ void nfs_setattr_update_inode(struct inode *inode, struct iattr *attr,
if ((attr->ia_valid & ATTR_KILL_SUID) != 0 &&
inode->i_mode & S_ISUID)
inode->i_mode &= ~S_ISUID;
- if ((attr->ia_valid & ATTR_KILL_SGID) != 0 &&
- (inode->i_mode & (S_ISGID | S_IXGRP)) ==
- (S_ISGID | S_IXGRP))
+ if (setattr_should_drop_sgid(&init_user_ns, inode))
inode->i_mode &= ~S_ISGID;
if ((attr->ia_valid & ATTR_MODE) != 0) {
int mode = attr->ia_mode & S_IALLUGO;
diff --git a/fs/nfs/nfs42proc.c b/fs/nfs/nfs42proc.c
index ecb428512fe1..7c33bba179d2 100644
--- a/fs/nfs/nfs42proc.c
+++ b/fs/nfs/nfs42proc.c
@@ -1359,7 +1359,6 @@ ssize_t nfs42_proc_getxattr(struct inode *inode, const char *name,
for (i = 0; i < np; i++) {
pages[i] = alloc_page(GFP_KERNEL);
if (!pages[i]) {
- np = i + 1;
err = -ENOMEM;
goto out;
}
@@ -1383,8 +1382,8 @@ ssize_t nfs42_proc_getxattr(struct inode *inode, const char *name,
} while (exception.retry);

out:
- while (--np >= 0)
- __free_page(pages[np]);
+ while (--i >= 0)
+ __free_page(pages[i]);
kfree(pages);

return err;
diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c
index 177cb7b089b9..1044305e7799 100644
--- a/fs/nfs/nfs4proc.c
+++ b/fs/nfs/nfs4proc.c
@@ -5995,9 +5995,8 @@ static ssize_t __nfs4_get_acl_uncached(struct inode *inode, void *buf,
out_ok:
ret = res.acl_len;
out_free:
- for (i = 0; i < npages; i++)
- if (pages[i])
- __free_page(pages[i]);
+ while (--i >= 0)
+ __free_page(pages[i]);
if (res.acl_scratch)
__free_page(res.acl_scratch);
kfree(pages);
@@ -7171,8 +7170,15 @@ static void nfs4_lock_done(struct rpc_task *task, void *calldata)
} else if (!nfs4_update_lock_stateid(lsp, &data->res.stateid))
goto out_restart;
break;
- case -NFS4ERR_BAD_STATEID:
case -NFS4ERR_OLD_STATEID:
+ if (data->arg.new_lock_owner != 0 &&
+ nfs4_refresh_open_old_stateid(&data->arg.open_stateid,
+ lsp->ls_state))
+ goto out_restart;
+ if (nfs4_refresh_lock_old_stateid(&data->arg.lock_stateid, lsp))
+ goto out_restart;
+ fallthrough;
+ case -NFS4ERR_BAD_STATEID:
case -NFS4ERR_STALE_STATEID:
case -NFS4ERR_EXPIRED:
if (data->arg.new_lock_owner != 0) {
diff --git a/fs/nfsd/nfs4state.c b/fs/nfsd/nfs4state.c
index c5dc0cd6f703..96714e105d7b 100644
--- a/fs/nfsd/nfs4state.c
+++ b/fs/nfsd/nfs4state.c
@@ -1368,9 +1368,9 @@ static void revoke_delegation(struct nfs4_delegation *dp)
WARN_ON(!list_empty(&dp->dl_recall_lru));

if (clp->cl_minorversion) {
+ spin_lock(&clp->cl_lock);
dp->dl_stid.sc_type = NFS4_REVOKED_DELEG_STID;
refcount_inc(&dp->dl_stid.sc_count);
- spin_lock(&clp->cl_lock);
list_add(&dp->dl_recall_lru, &clp->cl_revoked);
spin_unlock(&clp->cl_lock);
}
diff --git a/fs/nfsd/vfs.c b/fs/nfsd/vfs.c
index 155b34c4683c..4c11046800ab 100644
--- a/fs/nfsd/vfs.c
+++ b/fs/nfsd/vfs.c
@@ -321,7 +321,9 @@ nfsd_sanitize_attrs(struct inode *inode, struct iattr *iap)
iap->ia_mode &= ~S_ISGID;
} else {
/* set ATTR_KILL_* bits and let VFS handle it */
- iap->ia_valid |= (ATTR_KILL_SUID | ATTR_KILL_SGID);
+ iap->ia_valid |= ATTR_KILL_SUID;
+ iap->ia_valid |=
+ setattr_should_drop_sgid(&init_user_ns, inode);
}
}
}
diff --git a/include/drm/display/drm_dp.h b/include/drm/display/drm_dp.h
index 05f2cc03d03d..b235d6833e27 100644
--- a/include/drm/display/drm_dp.h
+++ b/include/drm/display/drm_dp.h
@@ -1525,7 +1525,7 @@ enum drm_dp_phy {

#define DP_BRANCH_OUI_HEADER_SIZE 0xc
#define DP_RECEIVER_CAP_SIZE 0xf
-#define DP_DSC_RECEIVER_CAP_SIZE 0xf
+#define DP_DSC_RECEIVER_CAP_SIZE 0x10 /* DSC Capabilities 0x60 through 0x6F */
#define EDP_PSR_RECEIVER_CAP_SIZE 2
#define EDP_DISPLAY_CTL_CAP_SIZE 3
#define DP_LTTPR_COMMON_CAP_SIZE 8
diff --git a/include/drm/drm_aperture.h b/include/drm/drm_aperture.h
index 7096703c3949..cbe33b49fd5d 100644
--- a/include/drm/drm_aperture.h
+++ b/include/drm/drm_aperture.h
@@ -13,14 +13,13 @@ int devm_aperture_acquire_from_firmware(struct drm_device *dev, resource_size_t
resource_size_t size);

int drm_aperture_remove_conflicting_framebuffers(resource_size_t base, resource_size_t size,
- bool primary, const struct drm_driver *req_driver);
+ const struct drm_driver *req_driver);

int drm_aperture_remove_conflicting_pci_framebuffers(struct pci_dev *pdev,
const struct drm_driver *req_driver);

/**
* drm_aperture_remove_framebuffers - remove all existing framebuffers
- * @primary: also kick vga16fb if present
* @req_driver: requesting DRM driver
*
* This function removes all graphics device drivers. Use this function on systems
@@ -30,9 +29,9 @@ int drm_aperture_remove_conflicting_pci_framebuffers(struct pci_dev *pdev,
* 0 on success, or a negative errno code otherwise
*/
static inline int
-drm_aperture_remove_framebuffers(bool primary, const struct drm_driver *req_driver)
+drm_aperture_remove_framebuffers(const struct drm_driver *req_driver)
{
- return drm_aperture_remove_conflicting_framebuffers(0, (resource_size_t)-1, primary,
+ return drm_aperture_remove_conflicting_framebuffers(0, (resource_size_t)-1,
req_driver);
}

diff --git a/include/linux/clk.h b/include/linux/clk.h
index 1ef013324237..06f1b292f8a0 100644
--- a/include/linux/clk.h
+++ b/include/linux/clk.h
@@ -183,6 +183,39 @@ int clk_get_scaled_duty_cycle(struct clk *clk, unsigned int scale);
*/
bool clk_is_match(const struct clk *p, const struct clk *q);

+/**
+ * clk_rate_exclusive_get - get exclusivity over the rate control of a
+ * producer
+ * @clk: clock source
+ *
+ * This function allows drivers to get exclusive control over the rate of a
+ * provider. It prevents any other consumer to execute, even indirectly,
+ * opereation which could alter the rate of the provider or cause glitches
+ *
+ * If exlusivity is claimed more than once on clock, even by the same driver,
+ * the rate effectively gets locked as exclusivity can't be preempted.
+ *
+ * Must not be called from within atomic context.
+ *
+ * Returns success (0) or negative errno.
+ */
+int clk_rate_exclusive_get(struct clk *clk);
+
+/**
+ * clk_rate_exclusive_put - release exclusivity over the rate control of a
+ * producer
+ * @clk: clock source
+ *
+ * This function allows drivers to release the exclusivity it previously got
+ * from clk_rate_exclusive_get()
+ *
+ * The caller must balance the number of clk_rate_exclusive_get() and
+ * clk_rate_exclusive_put() calls.
+ *
+ * Must not be called from within atomic context.
+ */
+void clk_rate_exclusive_put(struct clk *clk);
+
#else

static inline int clk_notifier_register(struct clk *clk,
@@ -236,6 +269,13 @@ static inline bool clk_is_match(const struct clk *p, const struct clk *q)
return p == q;
}

+static inline int clk_rate_exclusive_get(struct clk *clk)
+{
+ return 0;
+}
+
+static inline void clk_rate_exclusive_put(struct clk *clk) {}
+
#endif

#ifdef CONFIG_HAVE_CLK_PREPARE
@@ -583,38 +623,6 @@ struct clk *devm_clk_get_optional_enabled(struct device *dev, const char *id);
*/
struct clk *devm_get_clk_from_child(struct device *dev,
struct device_node *np, const char *con_id);
-/**
- * clk_rate_exclusive_get - get exclusivity over the rate control of a
- * producer
- * @clk: clock source
- *
- * This function allows drivers to get exclusive control over the rate of a
- * provider. It prevents any other consumer to execute, even indirectly,
- * opereation which could alter the rate of the provider or cause glitches
- *
- * If exlusivity is claimed more than once on clock, even by the same driver,
- * the rate effectively gets locked as exclusivity can't be preempted.
- *
- * Must not be called from within atomic context.
- *
- * Returns success (0) or negative errno.
- */
-int clk_rate_exclusive_get(struct clk *clk);
-
-/**
- * clk_rate_exclusive_put - release exclusivity over the rate control of a
- * producer
- * @clk: clock source
- *
- * This function allows drivers to release the exclusivity it previously got
- * from clk_rate_exclusive_get()
- *
- * The caller must balance the number of clk_rate_exclusive_get() and
- * clk_rate_exclusive_put() calls.
- *
- * Must not be called from within atomic context.
- */
-void clk_rate_exclusive_put(struct clk *clk);

/**
* clk_enable - inform the system when the clock source should be running.
@@ -974,14 +982,6 @@ static inline void clk_bulk_put_all(int num_clks, struct clk_bulk_data *clks) {}

static inline void devm_clk_put(struct device *dev, struct clk *clk) {}

-
-static inline int clk_rate_exclusive_get(struct clk *clk)
-{
- return 0;
-}
-
-static inline void clk_rate_exclusive_put(struct clk *clk) {}
-
static inline int clk_enable(struct clk *clk)
{
return 0;
diff --git a/include/linux/cpuset.h b/include/linux/cpuset.h
index d58e0476ee8e..0348dba5680e 100644
--- a/include/linux/cpuset.h
+++ b/include/linux/cpuset.h
@@ -71,8 +71,10 @@ extern void cpuset_init_smp(void);
extern void cpuset_force_rebuild(void);
extern void cpuset_update_active_cpus(void);
extern void cpuset_wait_for_hotplug(void);
-extern void cpuset_read_lock(void);
-extern void cpuset_read_unlock(void);
+extern void inc_dl_tasks_cs(struct task_struct *task);
+extern void dec_dl_tasks_cs(struct task_struct *task);
+extern void cpuset_lock(void);
+extern void cpuset_unlock(void);
extern void cpuset_cpus_allowed(struct task_struct *p, struct cpumask *mask);
extern bool cpuset_cpus_allowed_fallback(struct task_struct *p);
extern nodemask_t cpuset_mems_allowed(struct task_struct *p);
@@ -196,8 +198,10 @@ static inline void cpuset_update_active_cpus(void)

static inline void cpuset_wait_for_hotplug(void) { }

-static inline void cpuset_read_lock(void) { }
-static inline void cpuset_read_unlock(void) { }
+static inline void inc_dl_tasks_cs(struct task_struct *task) { }
+static inline void dec_dl_tasks_cs(struct task_struct *task) { }
+static inline void cpuset_lock(void) { }
+static inline void cpuset_unlock(void) { }

static inline void cpuset_cpus_allowed(struct task_struct *p,
struct cpumask *mask)
diff --git a/include/linux/fs.h b/include/linux/fs.h
index a2b5592c6828..26ea1a0a59a1 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -3120,6 +3120,8 @@ extern struct inode *new_inode(struct super_block *sb);
extern void free_inode_nonrcu(struct inode *inode);
extern int setattr_should_drop_suidgid(struct user_namespace *, struct inode *);
extern int file_remove_privs(struct file *);
+int setattr_should_drop_sgid(struct user_namespace *mnt_userns,
+ const struct inode *inode);

/*
* This must be used for allocating filesystems specific inodes to set
diff --git a/include/linux/jbd2.h b/include/linux/jbd2.h
index 0b7242370b56..ebb1608d9dcd 100644
--- a/include/linux/jbd2.h
+++ b/include/linux/jbd2.h
@@ -622,12 +622,6 @@ struct transaction_s
*/
struct journal_head *t_checkpoint_list;

- /*
- * Doubly-linked circular list of all buffers submitted for IO while
- * checkpointing. [j_list_lock]
- */
- struct journal_head *t_checkpoint_io_list;
-
/*
* Doubly-linked circular list of metadata buffers being
* shadowed by log IO. The IO buffers on the iobuf list and
@@ -1441,6 +1435,7 @@ extern void jbd2_journal_commit_transaction(journal_t *);
void __jbd2_journal_clean_checkpoint_list(journal_t *journal, bool destroy);
unsigned long jbd2_journal_shrink_checkpoint_list(journal_t *journal, unsigned long *nr_to_scan);
int __jbd2_journal_remove_checkpoint(struct journal_head *);
+int jbd2_journal_try_remove_checkpoint(struct journal_head *jh);
void jbd2_journal_destroy_checkpoint(journal_t *journal);
void __jbd2_journal_insert_checkpoint(struct journal_head *, transaction_t *);

diff --git a/include/linux/mm.h b/include/linux/mm.h
index b8ed44f401b5..104ec00823da 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -1727,6 +1727,25 @@ static inline size_t folio_size(struct folio *folio)
return PAGE_SIZE << folio_order(folio);
}

+/**
+ * folio_estimated_sharers - Estimate the number of sharers of a folio.
+ * @folio: The folio.
+ *
+ * folio_estimated_sharers() aims to serve as a function to efficiently
+ * estimate the number of processes sharing a folio. This is done by
+ * looking at the precise mapcount of the first subpage in the folio, and
+ * assuming the other subpages are the same. This may not be true for large
+ * folios. If you want exact mapcounts for exact calculations, look at
+ * page_mapcount() or folio_total_mapcount().
+ *
+ * Return: The estimated number of processes sharing a folio.
+ */
+static inline int folio_estimated_sharers(struct folio *folio)
+{
+ return page_mapcount(folio_page(folio, 0));
+}
+
+
#ifndef HAVE_ARCH_MAKE_PAGE_ACCESSIBLE
static inline int arch_make_page_accessible(struct page *page)
{
@@ -3091,6 +3110,16 @@ static inline bool gup_must_unshare(unsigned int flags, struct page *page)
if (IS_ENABLED(CONFIG_HAVE_FAST_GUP))
smp_rmb();

+ /*
+ * During GUP-fast we might not get called on the head page for a
+ * hugetlb page that is mapped using cont-PTE, because GUP-fast does
+ * not work with the abstracted hugetlb PTEs that always point at the
+ * head page. For hugetlb, PageAnonExclusive only applies on the head
+ * page (as it cannot be partially COW-shared), so lookup the head page.
+ */
+ if (unlikely(!PageHead(page) && PageHuge(page)))
+ page = compound_head(page);
+
/*
* Note that PageKsm() pages cannot be exclusive, and consequently,
* cannot get pinned.
diff --git a/include/linux/raid_class.h b/include/linux/raid_class.h
index 5cdfcb873a8f..772d45b2a60a 100644
--- a/include/linux/raid_class.h
+++ b/include/linux/raid_class.h
@@ -77,7 +77,3 @@ DEFINE_RAID_ATTRIBUTE(enum raid_state, state)

struct raid_template *raid_class_attach(struct raid_function_template *);
void raid_class_release(struct raid_template *);
-
-int __must_check raid_component_add(struct raid_template *, struct device *,
- struct device *);
-
diff --git a/include/linux/sched.h b/include/linux/sched.h
index ffb6eb55cd13..0cac69902ec5 100644
--- a/include/linux/sched.h
+++ b/include/linux/sched.h
@@ -1846,7 +1846,9 @@ current_restore_flags(unsigned long orig_flags, unsigned long flags)
}

extern int cpuset_cpumask_can_shrink(const struct cpumask *cur, const struct cpumask *trial);
-extern int task_can_attach(struct task_struct *p, const struct cpumask *cs_effective_cpus);
+extern int task_can_attach(struct task_struct *p);
+extern int dl_bw_alloc(int cpu, u64 dl_bw);
+extern void dl_bw_free(int cpu, u64 dl_bw);
#ifdef CONFIG_SMP
extern void do_set_cpus_allowed(struct task_struct *p, const struct cpumask *new_mask);
extern int set_cpus_allowed_ptr(struct task_struct *p, const struct cpumask *new_mask);
diff --git a/include/net/bonding.h b/include/net/bonding.h
index 17329a19f0c6..9a3ac960dfe1 100644
--- a/include/net/bonding.h
+++ b/include/net/bonding.h
@@ -727,23 +727,14 @@ static inline struct slave *bond_slave_has_mac(struct bonding *bond,
}

/* Caller must hold rcu_read_lock() for read */
-static inline bool bond_slave_has_mac_rx(struct bonding *bond, const u8 *mac)
+static inline bool bond_slave_has_mac_rcu(struct bonding *bond, const u8 *mac)
{
struct list_head *iter;
struct slave *tmp;
- struct netdev_hw_addr *ha;

bond_for_each_slave_rcu(bond, tmp, iter)
if (ether_addr_equal_64bits(mac, tmp->dev->dev_addr))
return true;
-
- if (netdev_uc_empty(bond->dev))
- return false;
-
- netdev_for_each_uc_addr(ha, bond->dev)
- if (ether_addr_equal_64bits(mac, ha->addr))
- return true;
-
return false;
}

diff --git a/include/net/inet_sock.h b/include/net/inet_sock.h
index c8ef3b881f03..c2432c2addc8 100644
--- a/include/net/inet_sock.h
+++ b/include/net/inet_sock.h
@@ -222,8 +222,8 @@ struct inet_sock {
__s16 uc_ttl;
__u16 cmsg_flags;
struct ip_options_rcu __rcu *inet_opt;
+ atomic_t inet_id;
__be16 inet_sport;
- __u16 inet_id;

__u8 tos;
__u8 min_ttl;
diff --git a/include/net/ip.h b/include/net/ip.h
index 530e7257e438..1872f570abed 100644
--- a/include/net/ip.h
+++ b/include/net/ip.h
@@ -532,8 +532,19 @@ static inline void ip_select_ident_segs(struct net *net, struct sk_buff *skb,
* generator as much as we can.
*/
if (sk && inet_sk(sk)->inet_daddr) {
- iph->id = htons(inet_sk(sk)->inet_id);
- inet_sk(sk)->inet_id += segs;
+ int val;
+
+ /* avoid atomic operations for TCP,
+ * as we hold socket lock at this point.
+ */
+ if (sk_is_tcp(sk)) {
+ sock_owned_by_me(sk);
+ val = atomic_read(&inet_sk(sk)->inet_id);
+ atomic_set(&inet_sk(sk)->inet_id, val + segs);
+ } else {
+ val = atomic_add_return(segs, &inet_sk(sk)->inet_id);
+ }
+ iph->id = htons(val);
return;
}
if ((iph->frag_off & htons(IP_DF)) && !skb->ignore_df) {
diff --git a/include/net/mac80211.h b/include/net/mac80211.h
index 72b739dc6d53..8a338c33118f 100644
--- a/include/net/mac80211.h
+++ b/include/net/mac80211.h
@@ -6444,6 +6444,7 @@ void ieee80211_stop_rx_ba_session(struct ieee80211_vif *vif, u16 ba_rx_bitmap,
* marks frames marked in the bitmap as having been filtered. Afterwards, it
* checks if any frames in the window starting from @ssn can now be released
* (in case they were only waiting for frames that were filtered.)
+ * (Only work correctly if @max_rx_aggregation_subframes <= 64 frames)
*/
void ieee80211_mark_rx_ba_filtered_frames(struct ieee80211_sta *pubsta, u8 tid,
u16 ssn, u64 filtered,
diff --git a/include/net/rtnetlink.h b/include/net/rtnetlink.h
index bf8bb3357825..9f881b74f32e 100644
--- a/include/net/rtnetlink.h
+++ b/include/net/rtnetlink.h
@@ -189,8 +189,8 @@ struct net_device *rtnl_create_link(struct net *net, const char *ifname,
int rtnl_delete_link(struct net_device *dev);
int rtnl_configure_link(struct net_device *dev, const struct ifinfomsg *ifm);

-int rtnl_nla_parse_ifla(struct nlattr **tb, const struct nlattr *head, int len,
- struct netlink_ext_ack *exterr);
+int rtnl_nla_parse_ifinfomsg(struct nlattr **tb, const struct nlattr *nla_peer,
+ struct netlink_ext_ack *exterr);
struct net *rtnl_get_net_ns_capable(struct sock *sk, int netnsid);

#define MODULE_ALIAS_RTNL_LINK(kind) MODULE_ALIAS("rtnl-link-" kind)
diff --git a/include/net/sock.h b/include/net/sock.h
index 699408944952..d1f936ed9755 100644
--- a/include/net/sock.h
+++ b/include/net/sock.h
@@ -1320,6 +1320,7 @@ struct proto {
/*
* Pressure flag: try to collapse.
* Technical note: it is used by multiple contexts non atomically.
+ * Make sure to use READ_ONCE()/WRITE_ONCE() for all reads/writes.
* All the __sk_mem_schedule() is of this nature: accounting
* is strict, actions are advisory and have some latency.
*/
@@ -1448,7 +1449,7 @@ static inline bool sk_has_memory_pressure(const struct sock *sk)
static inline bool sk_under_global_memory_pressure(const struct sock *sk)
{
return sk->sk_prot->memory_pressure &&
- !!*sk->sk_prot->memory_pressure;
+ !!READ_ONCE(*sk->sk_prot->memory_pressure);
}

static inline bool sk_under_memory_pressure(const struct sock *sk)
@@ -1460,7 +1461,7 @@ static inline bool sk_under_memory_pressure(const struct sock *sk)
mem_cgroup_under_socket_pressure(sk->sk_memcg))
return true;

- return !!*sk->sk_prot->memory_pressure;
+ return !!READ_ONCE(*sk->sk_prot->memory_pressure);
}

static inline long
@@ -1537,7 +1538,7 @@ proto_memory_pressure(struct proto *prot)
{
if (!prot->memory_pressure)
return false;
- return !!*prot->memory_pressure;
+ return !!READ_ONCE(*prot->memory_pressure);
}

diff --git a/include/trace/events/jbd2.h b/include/trace/events/jbd2.h
index 8f5ee380d309..5646ae15a957 100644
--- a/include/trace/events/jbd2.h
+++ b/include/trace/events/jbd2.h
@@ -462,11 +462,9 @@ TRACE_EVENT(jbd2_shrink_scan_exit,
TRACE_EVENT(jbd2_shrink_checkpoint_list,

TP_PROTO(journal_t *journal, tid_t first_tid, tid_t tid, tid_t last_tid,
- unsigned long nr_freed, unsigned long nr_scanned,
- tid_t next_tid),
+ unsigned long nr_freed, tid_t next_tid),

- TP_ARGS(journal, first_tid, tid, last_tid, nr_freed,
- nr_scanned, next_tid),
+ TP_ARGS(journal, first_tid, tid, last_tid, nr_freed, next_tid),

TP_STRUCT__entry(
__field(dev_t, dev)
@@ -474,7 +472,6 @@ TRACE_EVENT(jbd2_shrink_checkpoint_list,
__field(tid_t, tid)
__field(tid_t, last_tid)
__field(unsigned long, nr_freed)
- __field(unsigned long, nr_scanned)
__field(tid_t, next_tid)
),

@@ -484,15 +481,14 @@ TRACE_EVENT(jbd2_shrink_checkpoint_list,
__entry->tid = tid;
__entry->last_tid = last_tid;
__entry->nr_freed = nr_freed;
- __entry->nr_scanned = nr_scanned;
__entry->next_tid = next_tid;
),

TP_printk("dev %d,%d shrink transaction %u-%u(%u) freed %lu "
- "scanned %lu next transaction %u",
+ "next transaction %u",
MAJOR(__entry->dev), MINOR(__entry->dev),
__entry->first_tid, __entry->tid, __entry->last_tid,
- __entry->nr_freed, __entry->nr_scanned, __entry->next_tid)
+ __entry->nr_freed, __entry->next_tid)
);

#endif /* _TRACE_JBD2_H */
diff --git a/io_uring/msg_ring.c b/io_uring/msg_ring.c
index 3526389ac218..cd922d2bef5f 100644
--- a/io_uring/msg_ring.c
+++ b/io_uring/msg_ring.c
@@ -15,6 +15,7 @@

struct io_msg {
struct file *file;
+ struct file *src_file;
u64 user_data;
u32 len;
u32 cmd;
@@ -23,33 +24,12 @@ struct io_msg {
u32 flags;
};

-static int io_msg_ring_data(struct io_kiocb *req)
+static void io_double_unlock_ctx(struct io_ring_ctx *octx)
{
- struct io_ring_ctx *target_ctx = req->file->private_data;
- struct io_msg *msg = io_kiocb_to_cmd(req, struct io_msg);
-
- if (msg->src_fd || msg->dst_fd || msg->flags)
- return -EINVAL;
- if (target_ctx->flags & IORING_SETUP_R_DISABLED)
- return -EBADFD;
-
- if (io_post_aux_cqe(target_ctx, msg->user_data, msg->len, 0, true))
- return 0;
-
- return -EOVERFLOW;
-}
-
-static void io_double_unlock_ctx(struct io_ring_ctx *ctx,
- struct io_ring_ctx *octx,
- unsigned int issue_flags)
-{
- if (issue_flags & IO_URING_F_UNLOCKED)
- mutex_unlock(&ctx->uring_lock);
mutex_unlock(&octx->uring_lock);
}

-static int io_double_lock_ctx(struct io_ring_ctx *ctx,
- struct io_ring_ctx *octx,
+static int io_double_lock_ctx(struct io_ring_ctx *octx,
unsigned int issue_flags)
{
/*
@@ -62,60 +42,86 @@ static int io_double_lock_ctx(struct io_ring_ctx *ctx,
return -EAGAIN;
return 0;
}
+ mutex_lock(&octx->uring_lock);
+ return 0;
+}

- /* Always grab smallest value ctx first. We know ctx != octx. */
- if (ctx < octx) {
- mutex_lock(&ctx->uring_lock);
- mutex_lock(&octx->uring_lock);
- } else {
- mutex_lock(&octx->uring_lock);
- mutex_lock(&ctx->uring_lock);
- }
+void io_msg_ring_cleanup(struct io_kiocb *req)
+{
+ struct io_msg *msg = io_kiocb_to_cmd(req, struct io_msg);

- return 0;
+ if (WARN_ON_ONCE(!msg->src_file))
+ return;
+
+ fput(msg->src_file);
+ msg->src_file = NULL;
}

-static int io_msg_send_fd(struct io_kiocb *req, unsigned int issue_flags)
+static int io_msg_ring_data(struct io_kiocb *req, unsigned int issue_flags)
{
struct io_ring_ctx *target_ctx = req->file->private_data;
struct io_msg *msg = io_kiocb_to_cmd(req, struct io_msg);
- struct io_ring_ctx *ctx = req->ctx;
- unsigned long file_ptr;
- struct file *src_file;
int ret;

- if (msg->len)
- return -EINVAL;
- if (target_ctx == ctx)
+ if (msg->src_fd || msg->dst_fd || msg->flags)
return -EINVAL;
if (target_ctx->flags & IORING_SETUP_R_DISABLED)
return -EBADFD;

- ret = io_double_lock_ctx(ctx, target_ctx, issue_flags);
- if (unlikely(ret))
- return ret;
+ ret = -EOVERFLOW;
+ if (target_ctx->flags & IORING_SETUP_IOPOLL) {
+ if (unlikely(io_double_lock_ctx(target_ctx, issue_flags)))
+ return -EAGAIN;
+ if (io_post_aux_cqe(target_ctx, msg->user_data, msg->len, 0, true))
+ ret = 0;
+ io_double_unlock_ctx(target_ctx);
+ } else {
+ if (io_post_aux_cqe(target_ctx, msg->user_data, msg->len, 0, true))
+ ret = 0;
+ }

- ret = -EBADF;
- if (unlikely(msg->src_fd >= ctx->nr_user_files))
- goto out_unlock;
+ return ret;
+}

- msg->src_fd = array_index_nospec(msg->src_fd, ctx->nr_user_files);
- file_ptr = io_fixed_file_slot(&ctx->file_table, msg->src_fd)->file_ptr;
- if (!file_ptr)
- goto out_unlock;
+static struct file *io_msg_grab_file(struct io_kiocb *req, unsigned int issue_flags)
+{
+ struct io_msg *msg = io_kiocb_to_cmd(req, struct io_msg);
+ struct io_ring_ctx *ctx = req->ctx;
+ struct file *file = NULL;
+ unsigned long file_ptr;
+ int idx = msg->src_fd;
+
+ io_ring_submit_lock(ctx, issue_flags);
+ if (likely(idx < ctx->nr_user_files)) {
+ idx = array_index_nospec(idx, ctx->nr_user_files);
+ file_ptr = io_fixed_file_slot(&ctx->file_table, idx)->file_ptr;
+ file = (struct file *) (file_ptr & FFS_MASK);
+ if (file)
+ get_file(file);
+ }
+ io_ring_submit_unlock(ctx, issue_flags);
+ return file;
+}

- src_file = (struct file *) (file_ptr & FFS_MASK);
- get_file(src_file);
+static int io_msg_install_complete(struct io_kiocb *req, unsigned int issue_flags)
+{
+ struct io_ring_ctx *target_ctx = req->file->private_data;
+ struct io_msg *msg = io_kiocb_to_cmd(req, struct io_msg);
+ struct file *src_file = msg->src_file;
+ int ret;
+
+ if (unlikely(io_double_lock_ctx(target_ctx, issue_flags)))
+ return -EAGAIN;

ret = __io_fixed_fd_install(target_ctx, src_file, msg->dst_fd);
- if (ret < 0) {
- fput(src_file);
+ if (ret < 0)
goto out_unlock;
- }
+
+ msg->src_file = NULL;
+ req->flags &= ~REQ_F_NEED_CLEANUP;

if (msg->flags & IORING_MSG_RING_CQE_SKIP)
goto out_unlock;
-
/*
* If this fails, the target still received the file descriptor but
* wasn't notified of the fact. This means that if this request
@@ -125,10 +131,29 @@ static int io_msg_send_fd(struct io_kiocb *req, unsigned int issue_flags)
if (!io_post_aux_cqe(target_ctx, msg->user_data, ret, 0, true))
ret = -EOVERFLOW;
out_unlock:
- io_double_unlock_ctx(ctx, target_ctx, issue_flags);
+ io_double_unlock_ctx(target_ctx);
return ret;
}

+static int io_msg_send_fd(struct io_kiocb *req, unsigned int issue_flags)
+{
+ struct io_ring_ctx *target_ctx = req->file->private_data;
+ struct io_msg *msg = io_kiocb_to_cmd(req, struct io_msg);
+ struct io_ring_ctx *ctx = req->ctx;
+ struct file *src_file = msg->src_file;
+
+ if (target_ctx == ctx)
+ return -EINVAL;
+ if (!src_file) {
+ src_file = io_msg_grab_file(req, issue_flags);
+ if (!src_file)
+ return -EBADF;
+ msg->src_file = src_file;
+ req->flags |= REQ_F_NEED_CLEANUP;
+ }
+ return io_msg_install_complete(req, issue_flags);
+}
+
int io_msg_ring_prep(struct io_kiocb *req, const struct io_uring_sqe *sqe)
{
struct io_msg *msg = io_kiocb_to_cmd(req, struct io_msg);
@@ -136,6 +161,7 @@ int io_msg_ring_prep(struct io_kiocb *req, const struct io_uring_sqe *sqe)
if (unlikely(sqe->buf_index || sqe->personality))
return -EINVAL;

+ msg->src_file = NULL;
msg->user_data = READ_ONCE(sqe->off);
msg->len = READ_ONCE(sqe->len);
msg->cmd = READ_ONCE(sqe->addr);
@@ -159,7 +185,7 @@ int io_msg_ring(struct io_kiocb *req, unsigned int issue_flags)

switch (msg->cmd) {
case IORING_MSG_DATA:
- ret = io_msg_ring_data(req);
+ ret = io_msg_ring_data(req, issue_flags);
break;
case IORING_MSG_SEND_FD:
ret = io_msg_send_fd(req, issue_flags);
diff --git a/io_uring/msg_ring.h b/io_uring/msg_ring.h
index fb9601f202d0..3987ee6c0e5f 100644
--- a/io_uring/msg_ring.h
+++ b/io_uring/msg_ring.h
@@ -2,3 +2,4 @@

int io_msg_ring_prep(struct io_kiocb *req, const struct io_uring_sqe *sqe);
int io_msg_ring(struct io_kiocb *req, unsigned int issue_flags);
+void io_msg_ring_cleanup(struct io_kiocb *req);
diff --git a/io_uring/opdef.c b/io_uring/opdef.c
index 04dd2c983fce..3aa0d65c50e3 100644
--- a/io_uring/opdef.c
+++ b/io_uring/opdef.c
@@ -445,6 +445,7 @@ const struct io_op_def io_op_defs[] = {
.name = "MSG_RING",
.prep = io_msg_ring_prep,
.issue = io_msg_ring,
+ .cleanup = io_msg_ring_cleanup,
},
[IORING_OP_FSETXATTR] = {
.needs_file = 1,
diff --git a/kernel/cgroup/cgroup.c b/kernel/cgroup/cgroup.c
index 73f11e4db3a4..97ecca43386d 100644
--- a/kernel/cgroup/cgroup.c
+++ b/kernel/cgroup/cgroup.c
@@ -57,6 +57,7 @@
#include <linux/file.h>
#include <linux/fs_parser.h>
#include <linux/sched/cputime.h>
+#include <linux/sched/deadline.h>
#include <linux/psi.h>
#include <net/sock.h>

@@ -6681,6 +6682,9 @@ void cgroup_exit(struct task_struct *tsk)
list_add_tail(&tsk->cg_list, &cset->dying_tasks);
cset->nr_tasks--;

+ if (dl_task(tsk))
+ dec_dl_tasks_cs(tsk);
+
WARN_ON_ONCE(cgroup_task_frozen(tsk));
if (unlikely(!(tsk->flags & PF_KTHREAD) &&
test_bit(CGRP_FREEZE, &task_dfl_cgroup(tsk)->flags)))
diff --git a/kernel/cgroup/cpuset.c b/kernel/cgroup/cpuset.c
index e276db722845..db3e05b6b4dd 100644
--- a/kernel/cgroup/cpuset.c
+++ b/kernel/cgroup/cpuset.c
@@ -193,6 +193,14 @@ struct cpuset {
int use_parent_ecpus;
int child_ecpus_count;

+ /*
+ * number of SCHED_DEADLINE tasks attached to this cpuset, so that we
+ * know when to rebuild associated root domain bandwidth information.
+ */
+ int nr_deadline_tasks;
+ int nr_migrate_dl_tasks;
+ u64 sum_migrate_dl_bw;
+
/* Invalid partition error code, not lock protected */
enum prs_errcode prs_err;

@@ -245,6 +253,20 @@ static inline struct cpuset *parent_cs(struct cpuset *cs)
return css_cs(cs->css.parent);
}

+void inc_dl_tasks_cs(struct task_struct *p)
+{
+ struct cpuset *cs = task_cs(p);
+
+ cs->nr_deadline_tasks++;
+}
+
+void dec_dl_tasks_cs(struct task_struct *p)
+{
+ struct cpuset *cs = task_cs(p);
+
+ cs->nr_deadline_tasks--;
+}
+
/* bits in struct cpuset flags field */
typedef enum {
CS_ONLINE,
@@ -366,22 +388,23 @@ static struct cpuset top_cpuset = {
if (is_cpuset_online(((des_cs) = css_cs((pos_css)))))

/*
- * There are two global locks guarding cpuset structures - cpuset_rwsem and
+ * There are two global locks guarding cpuset structures - cpuset_mutex and
* callback_lock. We also require taking task_lock() when dereferencing a
* task's cpuset pointer. See "The task_lock() exception", at the end of this
- * comment. The cpuset code uses only cpuset_rwsem write lock. Other
- * kernel subsystems can use cpuset_read_lock()/cpuset_read_unlock() to
- * prevent change to cpuset structures.
+ * comment. The cpuset code uses only cpuset_mutex. Other kernel subsystems
+ * can use cpuset_lock()/cpuset_unlock() to prevent change to cpuset
+ * structures. Note that cpuset_mutex needs to be a mutex as it is used in
+ * paths that rely on priority inheritance (e.g. scheduler - on RT) for
+ * correctness.
*
* A task must hold both locks to modify cpusets. If a task holds
- * cpuset_rwsem, it blocks others wanting that rwsem, ensuring that it
- * is the only task able to also acquire callback_lock and be able to
- * modify cpusets. It can perform various checks on the cpuset structure
- * first, knowing nothing will change. It can also allocate memory while
- * just holding cpuset_rwsem. While it is performing these checks, various
- * callback routines can briefly acquire callback_lock to query cpusets.
- * Once it is ready to make the changes, it takes callback_lock, blocking
- * everyone else.
+ * cpuset_mutex, it blocks others, ensuring that it is the only task able to
+ * also acquire callback_lock and be able to modify cpusets. It can perform
+ * various checks on the cpuset structure first, knowing nothing will change.
+ * It can also allocate memory while just holding cpuset_mutex. While it is
+ * performing these checks, various callback routines can briefly acquire
+ * callback_lock to query cpusets. Once it is ready to make the changes, it
+ * takes callback_lock, blocking everyone else.
*
* Calls to the kernel memory allocator can not be made while holding
* callback_lock, as that would risk double tripping on callback_lock
@@ -403,16 +426,16 @@ static struct cpuset top_cpuset = {
* guidelines for accessing subsystem state in kernel/cgroup.c
*/

-DEFINE_STATIC_PERCPU_RWSEM(cpuset_rwsem);
+static DEFINE_MUTEX(cpuset_mutex);

-void cpuset_read_lock(void)
+void cpuset_lock(void)
{
- percpu_down_read(&cpuset_rwsem);
+ mutex_lock(&cpuset_mutex);
}

-void cpuset_read_unlock(void)
+void cpuset_unlock(void)
{
- percpu_up_read(&cpuset_rwsem);
+ mutex_unlock(&cpuset_mutex);
}

static DEFINE_SPINLOCK(callback_lock);
@@ -496,7 +519,7 @@ static inline bool partition_is_populated(struct cpuset *cs,
* One way or another, we guarantee to return some non-empty subset
* of cpu_online_mask.
*
- * Call with callback_lock or cpuset_rwsem held.
+ * Call with callback_lock or cpuset_mutex held.
*/
static void guarantee_online_cpus(struct task_struct *tsk,
struct cpumask *pmask)
@@ -538,7 +561,7 @@ static void guarantee_online_cpus(struct task_struct *tsk,
* One way or another, we guarantee to return some non-empty subset
* of node_states[N_MEMORY].
*
- * Call with callback_lock or cpuset_rwsem held.
+ * Call with callback_lock or cpuset_mutex held.
*/
static void guarantee_online_mems(struct cpuset *cs, nodemask_t *pmask)
{
@@ -550,7 +573,7 @@ static void guarantee_online_mems(struct cpuset *cs, nodemask_t *pmask)
/*
* update task's spread flag if cpuset's page/slab spread flag is set
*
- * Call with callback_lock or cpuset_rwsem held. The check can be skipped
+ * Call with callback_lock or cpuset_mutex held. The check can be skipped
* if on default hierarchy.
*/
static void cpuset_update_task_spread_flags(struct cpuset *cs,
@@ -575,7 +598,7 @@ static void cpuset_update_task_spread_flags(struct cpuset *cs,
*
* One cpuset is a subset of another if all its allowed CPUs and
* Memory Nodes are a subset of the other, and its exclusive flags
- * are only set if the other's are set. Call holding cpuset_rwsem.
+ * are only set if the other's are set. Call holding cpuset_mutex.
*/

static int is_cpuset_subset(const struct cpuset *p, const struct cpuset *q)
@@ -713,7 +736,7 @@ static int validate_change_legacy(struct cpuset *cur, struct cpuset *trial)
* If we replaced the flag and mask values of the current cpuset
* (cur) with those values in the trial cpuset (trial), would
* our various subset and exclusive rules still be valid? Presumes
- * cpuset_rwsem held.
+ * cpuset_mutex held.
*
* 'cur' is the address of an actual, in-use cpuset. Operations
* such as list traversal that depend on the actual address of the
@@ -829,7 +852,7 @@ static void update_domain_attr_tree(struct sched_domain_attr *dattr,
rcu_read_unlock();
}

-/* Must be called with cpuset_rwsem held. */
+/* Must be called with cpuset_mutex held. */
static inline int nr_cpusets(void)
{
/* jump label reference count + the top-level cpuset */
@@ -855,7 +878,7 @@ static inline int nr_cpusets(void)
* domains when operating in the severe memory shortage situations
* that could cause allocation failures below.
*
- * Must be called with cpuset_rwsem held.
+ * Must be called with cpuset_mutex held.
*
* The three key local variables below are:
* cp - cpuset pointer, used (together with pos_css) to perform a
@@ -1066,11 +1089,14 @@ static int generate_sched_domains(cpumask_var_t **domains,
return ndoms;
}

-static void update_tasks_root_domain(struct cpuset *cs)
+static void dl_update_tasks_root_domain(struct cpuset *cs)
{
struct css_task_iter it;
struct task_struct *task;

+ if (cs->nr_deadline_tasks == 0)
+ return;
+
css_task_iter_start(&cs->css, 0, &it);

while ((task = css_task_iter_next(&it)))
@@ -1079,12 +1105,12 @@ static void update_tasks_root_domain(struct cpuset *cs)
css_task_iter_end(&it);
}

-static void rebuild_root_domains(void)
+static void dl_rebuild_rd_accounting(void)
{
struct cpuset *cs = NULL;
struct cgroup_subsys_state *pos_css;

- percpu_rwsem_assert_held(&cpuset_rwsem);
+ lockdep_assert_held(&cpuset_mutex);
lockdep_assert_cpus_held();
lockdep_assert_held(&sched_domains_mutex);

@@ -1107,7 +1133,7 @@ static void rebuild_root_domains(void)

rcu_read_unlock();

- update_tasks_root_domain(cs);
+ dl_update_tasks_root_domain(cs);

rcu_read_lock();
css_put(&cs->css);
@@ -1121,7 +1147,7 @@ partition_and_rebuild_sched_domains(int ndoms_new, cpumask_var_t doms_new[],
{
mutex_lock(&sched_domains_mutex);
partition_sched_domains_locked(ndoms_new, doms_new, dattr_new);
- rebuild_root_domains();
+ dl_rebuild_rd_accounting();
mutex_unlock(&sched_domains_mutex);
}

@@ -1134,7 +1160,7 @@ partition_and_rebuild_sched_domains(int ndoms_new, cpumask_var_t doms_new[],
* 'cpus' is removed, then call this routine to rebuild the
* scheduler's dynamic sched domains.
*
- * Call with cpuset_rwsem held. Takes cpus_read_lock().
+ * Call with cpuset_mutex held. Takes cpus_read_lock().
*/
static void rebuild_sched_domains_locked(void)
{
@@ -1145,7 +1171,7 @@ static void rebuild_sched_domains_locked(void)
int ndoms;

lockdep_assert_cpus_held();
- percpu_rwsem_assert_held(&cpuset_rwsem);
+ lockdep_assert_held(&cpuset_mutex);

/*
* If we have raced with CPU hotplug, return early to avoid
@@ -1196,9 +1222,9 @@ static void rebuild_sched_domains_locked(void)
void rebuild_sched_domains(void)
{
cpus_read_lock();
- percpu_down_write(&cpuset_rwsem);
+ mutex_lock(&cpuset_mutex);
rebuild_sched_domains_locked();
- percpu_up_write(&cpuset_rwsem);
+ mutex_unlock(&cpuset_mutex);
cpus_read_unlock();
}

@@ -1208,7 +1234,7 @@ void rebuild_sched_domains(void)
* @new_cpus: the temp variable for the new effective_cpus mask
*
* Iterate through each task of @cs updating its cpus_allowed to the
- * effective cpuset's. As this function is called with cpuset_rwsem held,
+ * effective cpuset's. As this function is called with cpuset_mutex held,
* cpuset membership stays stable.
*/
static void update_tasks_cpumask(struct cpuset *cs, struct cpumask *new_cpus)
@@ -1317,7 +1343,7 @@ static int update_parent_subparts_cpumask(struct cpuset *cs, int cmd,
int old_prs, new_prs;
int part_error = PERR_NONE; /* Partition error? */

- percpu_rwsem_assert_held(&cpuset_rwsem);
+ lockdep_assert_held(&cpuset_mutex);

/*
* The parent must be a partition root.
@@ -1540,7 +1566,7 @@ static int update_parent_subparts_cpumask(struct cpuset *cs, int cmd,
*
* On legacy hierarchy, effective_cpus will be the same with cpu_allowed.
*
- * Called with cpuset_rwsem held
+ * Called with cpuset_mutex held
*/
static void update_cpumasks_hier(struct cpuset *cs, struct tmpmasks *tmp,
bool force)
@@ -1700,7 +1726,7 @@ static void update_sibling_cpumasks(struct cpuset *parent, struct cpuset *cs,
struct cpuset *sibling;
struct cgroup_subsys_state *pos_css;

- percpu_rwsem_assert_held(&cpuset_rwsem);
+ lockdep_assert_held(&cpuset_mutex);

/*
* Check all its siblings and call update_cpumasks_hier()
@@ -1950,12 +1976,12 @@ static void *cpuset_being_rebound;
* @cs: the cpuset in which each task's mems_allowed mask needs to be changed
*
* Iterate through each task of @cs updating its mems_allowed to the
- * effective cpuset's. As this function is called with cpuset_rwsem held,
+ * effective cpuset's. As this function is called with cpuset_mutex held,
* cpuset membership stays stable.
*/
static void update_tasks_nodemask(struct cpuset *cs)
{
- static nodemask_t newmems; /* protected by cpuset_rwsem */
+ static nodemask_t newmems; /* protected by cpuset_mutex */
struct css_task_iter it;
struct task_struct *task;

@@ -1968,7 +1994,7 @@ static void update_tasks_nodemask(struct cpuset *cs)
* take while holding tasklist_lock. Forks can happen - the
* mpol_dup() cpuset_being_rebound check will catch such forks,
* and rebind their vma mempolicies too. Because we still hold
- * the global cpuset_rwsem, we know that no other rebind effort
+ * the global cpuset_mutex, we know that no other rebind effort
* will be contending for the global variable cpuset_being_rebound.
* It's ok if we rebind the same mm twice; mpol_rebind_mm()
* is idempotent. Also migrate pages in each mm to new nodes.
@@ -2014,7 +2040,7 @@ static void update_tasks_nodemask(struct cpuset *cs)
*
* On legacy hierarchy, effective_mems will be the same with mems_allowed.
*
- * Called with cpuset_rwsem held
+ * Called with cpuset_mutex held
*/
static void update_nodemasks_hier(struct cpuset *cs, nodemask_t *new_mems)
{
@@ -2067,7 +2093,7 @@ static void update_nodemasks_hier(struct cpuset *cs, nodemask_t *new_mems)
* mempolicies and if the cpuset is marked 'memory_migrate',
* migrate the tasks pages to the new memory.
*
- * Call with cpuset_rwsem held. May take callback_lock during call.
+ * Call with cpuset_mutex held. May take callback_lock during call.
* Will take tasklist_lock, scan tasklist for tasks in cpuset cs,
* lock each such tasks mm->mmap_lock, scan its vma's and rebind
* their mempolicies to the cpusets new mems_allowed.
@@ -2159,7 +2185,7 @@ static int update_relax_domain_level(struct cpuset *cs, s64 val)
* @cs: the cpuset in which each task's spread flags needs to be changed
*
* Iterate through each task of @cs updating its spread flags. As this
- * function is called with cpuset_rwsem held, cpuset membership stays
+ * function is called with cpuset_mutex held, cpuset membership stays
* stable.
*/
static void update_tasks_flags(struct cpuset *cs)
@@ -2179,7 +2205,7 @@ static void update_tasks_flags(struct cpuset *cs)
* cs: the cpuset to update
* turning_on: whether the flag is being set or cleared
*
- * Call with cpuset_rwsem held.
+ * Call with cpuset_mutex held.
*/

static int update_flag(cpuset_flagbits_t bit, struct cpuset *cs,
@@ -2229,7 +2255,7 @@ static int update_flag(cpuset_flagbits_t bit, struct cpuset *cs,
* @new_prs: new partition root state
* Return: 0 if successful, != 0 if error
*
- * Call with cpuset_rwsem held.
+ * Call with cpuset_mutex held.
*/
static int update_prstate(struct cpuset *cs, int new_prs)
{
@@ -2467,19 +2493,26 @@ static int cpuset_can_attach_check(struct cpuset *cs)
return 0;
}

-/* Called by cgroups to determine if a cpuset is usable; cpuset_rwsem held */
+static void reset_migrate_dl_data(struct cpuset *cs)
+{
+ cs->nr_migrate_dl_tasks = 0;
+ cs->sum_migrate_dl_bw = 0;
+}
+
+/* Called by cgroups to determine if a cpuset is usable; cpuset_mutex held */
static int cpuset_can_attach(struct cgroup_taskset *tset)
{
struct cgroup_subsys_state *css;
- struct cpuset *cs;
+ struct cpuset *cs, *oldcs;
struct task_struct *task;
int ret;

/* used later by cpuset_attach() */
cpuset_attach_old_cs = task_cs(cgroup_taskset_first(tset, &css));
+ oldcs = cpuset_attach_old_cs;
cs = css_cs(css);

- percpu_down_write(&cpuset_rwsem);
+ mutex_lock(&cpuset_mutex);

/* Check to see if task is allowed in the cpuset */
ret = cpuset_can_attach_check(cs);
@@ -2487,21 +2520,46 @@ static int cpuset_can_attach(struct cgroup_taskset *tset)
goto out_unlock;

cgroup_taskset_for_each(task, css, tset) {
- ret = task_can_attach(task, cs->effective_cpus);
+ ret = task_can_attach(task);
if (ret)
goto out_unlock;
ret = security_task_setscheduler(task);
if (ret)
goto out_unlock;
+
+ if (dl_task(task)) {
+ cs->nr_migrate_dl_tasks++;
+ cs->sum_migrate_dl_bw += task->dl.dl_bw;
+ }
}

+ if (!cs->nr_migrate_dl_tasks)
+ goto out_success;
+
+ if (!cpumask_intersects(oldcs->effective_cpus, cs->effective_cpus)) {
+ int cpu = cpumask_any_and(cpu_active_mask, cs->effective_cpus);
+
+ if (unlikely(cpu >= nr_cpu_ids)) {
+ reset_migrate_dl_data(cs);
+ ret = -EINVAL;
+ goto out_unlock;
+ }
+
+ ret = dl_bw_alloc(cpu, cs->sum_migrate_dl_bw);
+ if (ret) {
+ reset_migrate_dl_data(cs);
+ goto out_unlock;
+ }
+ }
+
+out_success:
/*
* Mark attach is in progress. This makes validate_change() fail
* changes which zero cpus/mems_allowed.
*/
cs->attach_in_progress++;
out_unlock:
- percpu_up_write(&cpuset_rwsem);
+ mutex_unlock(&cpuset_mutex);
return ret;
}

@@ -2513,15 +2571,23 @@ static void cpuset_cancel_attach(struct cgroup_taskset *tset)
cgroup_taskset_first(tset, &css);
cs = css_cs(css);

- percpu_down_write(&cpuset_rwsem);
+ mutex_lock(&cpuset_mutex);
cs->attach_in_progress--;
if (!cs->attach_in_progress)
wake_up(&cpuset_attach_wq);
- percpu_up_write(&cpuset_rwsem);
+
+ if (cs->nr_migrate_dl_tasks) {
+ int cpu = cpumask_any(cs->effective_cpus);
+
+ dl_bw_free(cpu, cs->sum_migrate_dl_bw);
+ reset_migrate_dl_data(cs);
+ }
+
+ mutex_unlock(&cpuset_mutex);
}

/*
- * Protected by cpuset_rwsem. cpus_attach is used only by cpuset_attach_task()
+ * Protected by cpuset_mutex. cpus_attach is used only by cpuset_attach_task()
* but we can't allocate it dynamically there. Define it global and
* allocate from cpuset_init().
*/
@@ -2530,7 +2596,7 @@ static nodemask_t cpuset_attach_nodemask_to;

static void cpuset_attach_task(struct cpuset *cs, struct task_struct *task)
{
- percpu_rwsem_assert_held(&cpuset_rwsem);
+ lockdep_assert_held(&cpuset_mutex);

if (cs != &top_cpuset)
guarantee_online_cpus(task, cpus_attach);
@@ -2558,7 +2624,7 @@ static void cpuset_attach(struct cgroup_taskset *tset)
cs = css_cs(css);

lockdep_assert_cpus_held(); /* see cgroup_attach_lock() */
- percpu_down_write(&cpuset_rwsem);
+ mutex_lock(&cpuset_mutex);

guarantee_online_mems(cs, &cpuset_attach_nodemask_to);

@@ -2594,11 +2660,17 @@ static void cpuset_attach(struct cgroup_taskset *tset)

cs->old_mems_allowed = cpuset_attach_nodemask_to;

+ if (cs->nr_migrate_dl_tasks) {
+ cs->nr_deadline_tasks += cs->nr_migrate_dl_tasks;
+ oldcs->nr_deadline_tasks -= cs->nr_migrate_dl_tasks;
+ reset_migrate_dl_data(cs);
+ }
+
cs->attach_in_progress--;
if (!cs->attach_in_progress)
wake_up(&cpuset_attach_wq);

- percpu_up_write(&cpuset_rwsem);
+ mutex_unlock(&cpuset_mutex);
}

/* The various types of files and directories in a cpuset file system */
@@ -2630,7 +2702,7 @@ static int cpuset_write_u64(struct cgroup_subsys_state *css, struct cftype *cft,
int retval = 0;

cpus_read_lock();
- percpu_down_write(&cpuset_rwsem);
+ mutex_lock(&cpuset_mutex);
if (!is_cpuset_online(cs)) {
retval = -ENODEV;
goto out_unlock;
@@ -2666,7 +2738,7 @@ static int cpuset_write_u64(struct cgroup_subsys_state *css, struct cftype *cft,
break;
}
out_unlock:
- percpu_up_write(&cpuset_rwsem);
+ mutex_unlock(&cpuset_mutex);
cpus_read_unlock();
return retval;
}
@@ -2679,7 +2751,7 @@ static int cpuset_write_s64(struct cgroup_subsys_state *css, struct cftype *cft,
int retval = -ENODEV;

cpus_read_lock();
- percpu_down_write(&cpuset_rwsem);
+ mutex_lock(&cpuset_mutex);
if (!is_cpuset_online(cs))
goto out_unlock;

@@ -2692,7 +2764,7 @@ static int cpuset_write_s64(struct cgroup_subsys_state *css, struct cftype *cft,
break;
}
out_unlock:
- percpu_up_write(&cpuset_rwsem);
+ mutex_unlock(&cpuset_mutex);
cpus_read_unlock();
return retval;
}
@@ -2725,7 +2797,7 @@ static ssize_t cpuset_write_resmask(struct kernfs_open_file *of,
* operation like this one can lead to a deadlock through kernfs
* active_ref protection. Let's break the protection. Losing the
* protection is okay as we check whether @cs is online after
- * grabbing cpuset_rwsem anyway. This only happens on the legacy
+ * grabbing cpuset_mutex anyway. This only happens on the legacy
* hierarchies.
*/
css_get(&cs->css);
@@ -2733,7 +2805,7 @@ static ssize_t cpuset_write_resmask(struct kernfs_open_file *of,
flush_work(&cpuset_hotplug_work);

cpus_read_lock();
- percpu_down_write(&cpuset_rwsem);
+ mutex_lock(&cpuset_mutex);
if (!is_cpuset_online(cs))
goto out_unlock;

@@ -2757,7 +2829,7 @@ static ssize_t cpuset_write_resmask(struct kernfs_open_file *of,

free_cpuset(trialcs);
out_unlock:
- percpu_up_write(&cpuset_rwsem);
+ mutex_unlock(&cpuset_mutex);
cpus_read_unlock();
kernfs_unbreak_active_protection(of->kn);
css_put(&cs->css);
@@ -2905,13 +2977,13 @@ static ssize_t sched_partition_write(struct kernfs_open_file *of, char *buf,

css_get(&cs->css);
cpus_read_lock();
- percpu_down_write(&cpuset_rwsem);
+ mutex_lock(&cpuset_mutex);
if (!is_cpuset_online(cs))
goto out_unlock;

retval = update_prstate(cs, val);
out_unlock:
- percpu_up_write(&cpuset_rwsem);
+ mutex_unlock(&cpuset_mutex);
cpus_read_unlock();
css_put(&cs->css);
return retval ?: nbytes;
@@ -3124,7 +3196,7 @@ static int cpuset_css_online(struct cgroup_subsys_state *css)
return 0;

cpus_read_lock();
- percpu_down_write(&cpuset_rwsem);
+ mutex_lock(&cpuset_mutex);

set_bit(CS_ONLINE, &cs->flags);
if (is_spread_page(parent))
@@ -3175,7 +3247,7 @@ static int cpuset_css_online(struct cgroup_subsys_state *css)
cpumask_copy(cs->effective_cpus, parent->cpus_allowed);
spin_unlock_irq(&callback_lock);
out_unlock:
- percpu_up_write(&cpuset_rwsem);
+ mutex_unlock(&cpuset_mutex);
cpus_read_unlock();
return 0;
}
@@ -3196,7 +3268,7 @@ static void cpuset_css_offline(struct cgroup_subsys_state *css)
struct cpuset *cs = css_cs(css);

cpus_read_lock();
- percpu_down_write(&cpuset_rwsem);
+ mutex_lock(&cpuset_mutex);

if (is_partition_valid(cs))
update_prstate(cs, 0);
@@ -3215,7 +3287,7 @@ static void cpuset_css_offline(struct cgroup_subsys_state *css)
cpuset_dec();
clear_bit(CS_ONLINE, &cs->flags);

- percpu_up_write(&cpuset_rwsem);
+ mutex_unlock(&cpuset_mutex);
cpus_read_unlock();
}

@@ -3228,7 +3300,7 @@ static void cpuset_css_free(struct cgroup_subsys_state *css)

static void cpuset_bind(struct cgroup_subsys_state *root_css)
{
- percpu_down_write(&cpuset_rwsem);
+ mutex_lock(&cpuset_mutex);
spin_lock_irq(&callback_lock);

if (is_in_v2_mode()) {
@@ -3241,7 +3313,7 @@ static void cpuset_bind(struct cgroup_subsys_state *root_css)
}

spin_unlock_irq(&callback_lock);
- percpu_up_write(&cpuset_rwsem);
+ mutex_unlock(&cpuset_mutex);
}

/*
@@ -3262,14 +3334,14 @@ static int cpuset_can_fork(struct task_struct *task, struct css_set *cset)
return 0;

lockdep_assert_held(&cgroup_mutex);
- percpu_down_write(&cpuset_rwsem);
+ mutex_lock(&cpuset_mutex);

/* Check to see if task is allowed in the cpuset */
ret = cpuset_can_attach_check(cs);
if (ret)
goto out_unlock;

- ret = task_can_attach(task, cs->effective_cpus);
+ ret = task_can_attach(task);
if (ret)
goto out_unlock;

@@ -3283,7 +3355,7 @@ static int cpuset_can_fork(struct task_struct *task, struct css_set *cset)
*/
cs->attach_in_progress++;
out_unlock:
- percpu_up_write(&cpuset_rwsem);
+ mutex_unlock(&cpuset_mutex);
return ret;
}

@@ -3299,11 +3371,11 @@ static void cpuset_cancel_fork(struct task_struct *task, struct css_set *cset)
if (same_cs)
return;

- percpu_down_write(&cpuset_rwsem);
+ mutex_lock(&cpuset_mutex);
cs->attach_in_progress--;
if (!cs->attach_in_progress)
wake_up(&cpuset_attach_wq);
- percpu_up_write(&cpuset_rwsem);
+ mutex_unlock(&cpuset_mutex);
}

/*
@@ -3331,7 +3403,7 @@ static void cpuset_fork(struct task_struct *task)
}

/* CLONE_INTO_CGROUP */
- percpu_down_write(&cpuset_rwsem);
+ mutex_lock(&cpuset_mutex);
guarantee_online_mems(cs, &cpuset_attach_nodemask_to);
cpuset_attach_task(cs, task);

@@ -3339,7 +3411,7 @@ static void cpuset_fork(struct task_struct *task)
if (!cs->attach_in_progress)
wake_up(&cpuset_attach_wq);

- percpu_up_write(&cpuset_rwsem);
+ mutex_unlock(&cpuset_mutex);
}

struct cgroup_subsys cpuset_cgrp_subsys = {
@@ -3369,8 +3441,6 @@ struct cgroup_subsys cpuset_cgrp_subsys = {

int __init cpuset_init(void)
{
- BUG_ON(percpu_init_rwsem(&cpuset_rwsem));
-
BUG_ON(!alloc_cpumask_var(&top_cpuset.cpus_allowed, GFP_KERNEL));
BUG_ON(!alloc_cpumask_var(&top_cpuset.effective_cpus, GFP_KERNEL));
BUG_ON(!zalloc_cpumask_var(&top_cpuset.subparts_cpus, GFP_KERNEL));
@@ -3442,7 +3512,7 @@ hotplug_update_tasks_legacy(struct cpuset *cs,
is_empty = cpumask_empty(cs->cpus_allowed) ||
nodes_empty(cs->mems_allowed);

- percpu_up_write(&cpuset_rwsem);
+ mutex_unlock(&cpuset_mutex);

/*
* Move tasks to the nearest ancestor with execution resources,
@@ -3452,7 +3522,7 @@ hotplug_update_tasks_legacy(struct cpuset *cs,
if (is_empty)
remove_tasks_in_empty_cpuset(cs);

- percpu_down_write(&cpuset_rwsem);
+ mutex_lock(&cpuset_mutex);
}

static void
@@ -3503,14 +3573,14 @@ static void cpuset_hotplug_update_tasks(struct cpuset *cs, struct tmpmasks *tmp)
retry:
wait_event(cpuset_attach_wq, cs->attach_in_progress == 0);

- percpu_down_write(&cpuset_rwsem);
+ mutex_lock(&cpuset_mutex);

/*
* We have raced with task attaching. We wait until attaching
* is finished, so we won't attach a task to an empty cpuset.
*/
if (cs->attach_in_progress) {
- percpu_up_write(&cpuset_rwsem);
+ mutex_unlock(&cpuset_mutex);
goto retry;
}

@@ -3604,7 +3674,7 @@ static void cpuset_hotplug_update_tasks(struct cpuset *cs, struct tmpmasks *tmp)
hotplug_update_tasks_legacy(cs, &new_cpus, &new_mems,
cpus_updated, mems_updated);

- percpu_up_write(&cpuset_rwsem);
+ mutex_unlock(&cpuset_mutex);
}

/**
@@ -3634,7 +3704,7 @@ static void cpuset_hotplug_workfn(struct work_struct *work)
if (on_dfl && !alloc_cpumasks(NULL, &tmp))
ptmp = &tmp;

- percpu_down_write(&cpuset_rwsem);
+ mutex_lock(&cpuset_mutex);

/* fetch the available cpus/mems and find out which changed how */
cpumask_copy(&new_cpus, cpu_active_mask);
@@ -3691,7 +3761,7 @@ static void cpuset_hotplug_workfn(struct work_struct *work)
update_tasks_nodemask(&top_cpuset);
}

- percpu_up_write(&cpuset_rwsem);
+ mutex_unlock(&cpuset_mutex);

/* if cpus or mems changed, we need to propagate to descendants */
if (cpus_updated || mems_updated) {
@@ -4101,7 +4171,7 @@ void __cpuset_memory_pressure_bump(void)
* - Used for /proc/<pid>/cpuset.
* - No need to task_lock(tsk) on this tsk->cpuset reference, as it
* doesn't really matter if tsk->cpuset changes after we read it,
- * and we take cpuset_rwsem, keeping cpuset_attach() from changing it
+ * and we take cpuset_mutex, keeping cpuset_attach() from changing it
* anyway.
*/
int proc_cpuset_show(struct seq_file *m, struct pid_namespace *ns,
diff --git a/kernel/sched/core.c b/kernel/sched/core.c
index b23dcbeacdf3..0f6a92737c91 100644
--- a/kernel/sched/core.c
+++ b/kernel/sched/core.c
@@ -7475,6 +7475,7 @@ static int __sched_setscheduler(struct task_struct *p,
int reset_on_fork;
int queue_flags = DEQUEUE_SAVE | DEQUEUE_MOVE | DEQUEUE_NOCLOCK;
struct rq *rq;
+ bool cpuset_locked = false;

/* The pi code expects interrupts enabled */
BUG_ON(pi && in_interrupt());
@@ -7524,8 +7525,14 @@ static int __sched_setscheduler(struct task_struct *p,
return retval;
}

- if (pi)
- cpuset_read_lock();
+ /*
+ * SCHED_DEADLINE bandwidth accounting relies on stable cpusets
+ * information.
+ */
+ if (dl_policy(policy) || dl_policy(p->policy)) {
+ cpuset_locked = true;
+ cpuset_lock();
+ }

/*
* Make sure no PI-waiters arrive (or leave) while we are
@@ -7601,8 +7608,8 @@ static int __sched_setscheduler(struct task_struct *p,
if (unlikely(oldpolicy != -1 && oldpolicy != p->policy)) {
policy = oldpolicy = -1;
task_rq_unlock(rq, p, &rf);
- if (pi)
- cpuset_read_unlock();
+ if (cpuset_locked)
+ cpuset_unlock();
goto recheck;
}

@@ -7669,7 +7676,8 @@ static int __sched_setscheduler(struct task_struct *p,
task_rq_unlock(rq, p, &rf);

if (pi) {
- cpuset_read_unlock();
+ if (cpuset_locked)
+ cpuset_unlock();
rt_mutex_adjust_pi(p);
}

@@ -7681,8 +7689,8 @@ static int __sched_setscheduler(struct task_struct *p,

unlock:
task_rq_unlock(rq, p, &rf);
- if (pi)
- cpuset_read_unlock();
+ if (cpuset_locked)
+ cpuset_unlock();
return retval;
}

@@ -9075,8 +9083,7 @@ int cpuset_cpumask_can_shrink(const struct cpumask *cur,
return ret;
}

-int task_can_attach(struct task_struct *p,
- const struct cpumask *cs_effective_cpus)
+int task_can_attach(struct task_struct *p)
{
int ret = 0;

@@ -9089,21 +9096,9 @@ int task_can_attach(struct task_struct *p,
* success of set_cpus_allowed_ptr() on all attached tasks
* before cpus_mask may be changed.
*/
- if (p->flags & PF_NO_SETAFFINITY) {
+ if (p->flags & PF_NO_SETAFFINITY)
ret = -EINVAL;
- goto out;
- }

- if (dl_task(p) && !cpumask_intersects(task_rq(p)->rd->span,
- cs_effective_cpus)) {
- int cpu = cpumask_any_and(cpu_active_mask, cs_effective_cpus);
-
- if (unlikely(cpu >= nr_cpu_ids))
- return -EINVAL;
- ret = dl_cpu_busy(cpu, p);
- }
-
-out:
return ret;
}

@@ -9385,7 +9380,7 @@ static void cpuset_cpu_active(void)
static int cpuset_cpu_inactive(unsigned int cpu)
{
if (!cpuhp_tasks_frozen) {
- int ret = dl_cpu_busy(cpu, NULL);
+ int ret = dl_bw_check_overflow(cpu);

if (ret)
return ret;
diff --git a/kernel/sched/deadline.c b/kernel/sched/deadline.c
index f7d381b6c313..9ce9810861ba 100644
--- a/kernel/sched/deadline.c
+++ b/kernel/sched/deadline.c
@@ -16,6 +16,8 @@
* Fabio Checconi <fchecconi@xxxxxxxxx>
*/

+#include <linux/cpuset.h>
+
/*
* Default limits for DL period; on the top end we guard against small util
* tasks still getting ridiculously long effective runtimes, on the bottom end we
@@ -2597,6 +2599,12 @@ static void switched_from_dl(struct rq *rq, struct task_struct *p)
if (task_on_rq_queued(p) && p->dl.dl_runtime)
task_non_contending(p);

+ /*
+ * In case a task is setscheduled out from SCHED_DEADLINE we need to
+ * keep track of that on its cpuset (for correct bandwidth tracking).
+ */
+ dec_dl_tasks_cs(p);
+
if (!task_on_rq_queued(p)) {
/*
* Inactive timer is armed. However, p is leaving DEADLINE and
@@ -2637,6 +2645,12 @@ static void switched_to_dl(struct rq *rq, struct task_struct *p)
if (hrtimer_try_to_cancel(&p->dl.inactive_timer) == 1)
put_task_struct(p);

+ /*
+ * In case a task is setscheduled to SCHED_DEADLINE we need to keep
+ * track of that on its cpuset (for correct bandwidth tracking).
+ */
+ inc_dl_tasks_cs(p);
+
/* If p is not queued we will update its parameters at next wakeup. */
if (!task_on_rq_queued(p)) {
add_rq_bw(&p->dl, &rq->dl);
@@ -3023,26 +3037,38 @@ int dl_cpuset_cpumask_can_shrink(const struct cpumask *cur,
return ret;
}

-int dl_cpu_busy(int cpu, struct task_struct *p)
+enum dl_bw_request {
+ dl_bw_req_check_overflow = 0,
+ dl_bw_req_alloc,
+ dl_bw_req_free
+};
+
+static int dl_bw_manage(enum dl_bw_request req, int cpu, u64 dl_bw)
{
- unsigned long flags, cap;
+ unsigned long flags;
struct dl_bw *dl_b;
- bool overflow;
+ bool overflow = 0;

rcu_read_lock_sched();
dl_b = dl_bw_of(cpu);
raw_spin_lock_irqsave(&dl_b->lock, flags);
- cap = dl_bw_capacity(cpu);
- overflow = __dl_overflow(dl_b, cap, 0, p ? p->dl.dl_bw : 0);

- if (!overflow && p) {
- /*
- * We reserve space for this task in the destination
- * root_domain, as we can't fail after this point.
- * We will free resources in the source root_domain
- * later on (see set_cpus_allowed_dl()).
- */
- __dl_add(dl_b, p->dl.dl_bw, dl_bw_cpus(cpu));
+ if (req == dl_bw_req_free) {
+ __dl_sub(dl_b, dl_bw, dl_bw_cpus(cpu));
+ } else {
+ unsigned long cap = dl_bw_capacity(cpu);
+
+ overflow = __dl_overflow(dl_b, cap, 0, dl_bw);
+
+ if (req == dl_bw_req_alloc && !overflow) {
+ /*
+ * We reserve space in the destination
+ * root_domain, as we can't fail after this point.
+ * We will free resources in the source root_domain
+ * later on (see set_cpus_allowed_dl()).
+ */
+ __dl_add(dl_b, dl_bw, dl_bw_cpus(cpu));
+ }
}

raw_spin_unlock_irqrestore(&dl_b->lock, flags);
@@ -3050,6 +3076,21 @@ int dl_cpu_busy(int cpu, struct task_struct *p)

return overflow ? -EBUSY : 0;
}
+
+int dl_bw_check_overflow(int cpu)
+{
+ return dl_bw_manage(dl_bw_req_check_overflow, cpu, 0);
+}
+
+int dl_bw_alloc(int cpu, u64 dl_bw)
+{
+ return dl_bw_manage(dl_bw_req_alloc, cpu, dl_bw);
+}
+
+void dl_bw_free(int cpu, u64 dl_bw)
+{
+ dl_bw_manage(dl_bw_req_free, cpu, dl_bw);
+}
#endif

#ifdef CONFIG_SCHED_DEBUG
diff --git a/kernel/sched/sched.h b/kernel/sched/sched.h
index d6d488e8eb55..b62d53d7c264 100644
--- a/kernel/sched/sched.h
+++ b/kernel/sched/sched.h
@@ -330,7 +330,7 @@ extern void __getparam_dl(struct task_struct *p, struct sched_attr *attr);
extern bool __checkparam_dl(const struct sched_attr *attr);
extern bool dl_param_changed(struct task_struct *p, const struct sched_attr *attr);
extern int dl_cpuset_cpumask_can_shrink(const struct cpumask *cur, const struct cpumask *trial);
-extern int dl_cpu_busy(int cpu, struct task_struct *p);
+extern int dl_bw_check_overflow(int cpu);

#ifdef CONFIG_CGROUP_SCHED

diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c
index af33c5a4166d..1a87cb70f1eb 100644
--- a/kernel/trace/trace.c
+++ b/kernel/trace/trace.c
@@ -4128,8 +4128,15 @@ static void *s_start(struct seq_file *m, loff_t *pos)
* will point to the same string as current_trace->name.
*/
mutex_lock(&trace_types_lock);
- if (unlikely(tr->current_trace && iter->trace->name != tr->current_trace->name))
+ if (unlikely(tr->current_trace && iter->trace->name != tr->current_trace->name)) {
+ /* Close iter->trace before switching to the new current tracer */
+ if (iter->trace->close)
+ iter->trace->close(iter);
*iter->trace = *tr->current_trace;
+ /* Reopen the new current tracer */
+ if (iter->trace->open)
+ iter->trace->open(iter);
+ }
mutex_unlock(&trace_types_lock);

#ifdef CONFIG_TRACER_MAX_TRACE
@@ -5189,11 +5196,17 @@ int tracing_set_cpumask(struct trace_array *tr,
!cpumask_test_cpu(cpu, tracing_cpumask_new)) {
atomic_inc(&per_cpu_ptr(tr->array_buffer.data, cpu)->disabled);
ring_buffer_record_disable_cpu(tr->array_buffer.buffer, cpu);
+#ifdef CONFIG_TRACER_MAX_TRACE
+ ring_buffer_record_disable_cpu(tr->max_buffer.buffer, cpu);
+#endif
}
if (!cpumask_test_cpu(cpu, tr->tracing_cpumask) &&
cpumask_test_cpu(cpu, tracing_cpumask_new)) {
atomic_dec(&per_cpu_ptr(tr->array_buffer.data, cpu)->disabled);
ring_buffer_record_enable_cpu(tr->array_buffer.buffer, cpu);
+#ifdef CONFIG_TRACER_MAX_TRACE
+ ring_buffer_record_enable_cpu(tr->max_buffer.buffer, cpu);
+#endif
}
}
arch_spin_unlock(&tr->max_lock);
diff --git a/kernel/trace/trace_irqsoff.c b/kernel/trace/trace_irqsoff.c
index 590b3d51afae..ba37f768e2f2 100644
--- a/kernel/trace/trace_irqsoff.c
+++ b/kernel/trace/trace_irqsoff.c
@@ -231,7 +231,8 @@ static void irqsoff_trace_open(struct trace_iterator *iter)
{
if (is_graph(iter->tr))
graph_trace_open(iter);
-
+ else
+ iter->private = NULL;
}

static void irqsoff_trace_close(struct trace_iterator *iter)
diff --git a/kernel/trace/trace_sched_wakeup.c b/kernel/trace/trace_sched_wakeup.c
index 330aee1c1a49..0469a04a355f 100644
--- a/kernel/trace/trace_sched_wakeup.c
+++ b/kernel/trace/trace_sched_wakeup.c
@@ -168,6 +168,8 @@ static void wakeup_trace_open(struct trace_iterator *iter)
{
if (is_graph(iter->tr))
graph_trace_open(iter);
+ else
+ iter->private = NULL;
}

static void wakeup_trace_close(struct trace_iterator *iter)
diff --git a/lib/clz_ctz.c b/lib/clz_ctz.c
index 0d3a686b5ba2..fb8c0c5c2bd2 100644
--- a/lib/clz_ctz.c
+++ b/lib/clz_ctz.c
@@ -28,36 +28,16 @@ int __weak __clzsi2(int val)
}
EXPORT_SYMBOL(__clzsi2);

-int __weak __clzdi2(long val);
-int __weak __ctzdi2(long val);
-#if BITS_PER_LONG == 32
-
-int __weak __clzdi2(long val)
+int __weak __clzdi2(u64 val);
+int __weak __clzdi2(u64 val)
{
- return 32 - fls((int)val);
+ return 64 - fls64(val);
}
EXPORT_SYMBOL(__clzdi2);

-int __weak __ctzdi2(long val)
+int __weak __ctzdi2(u64 val);
+int __weak __ctzdi2(u64 val)
{
- return __ffs((u32)val);
+ return __ffs64(val);
}
EXPORT_SYMBOL(__ctzdi2);
-
-#elif BITS_PER_LONG == 64
-
-int __weak __clzdi2(long val)
-{
- return 64 - fls64((u64)val);
-}
-EXPORT_SYMBOL(__clzdi2);
-
-int __weak __ctzdi2(long val)
-{
- return __ffs64((u64)val);
-}
-EXPORT_SYMBOL(__ctzdi2);
-
-#else
-#error BITS_PER_LONG not 32 or 64
-#endif
diff --git a/lib/maple_tree.c b/lib/maple_tree.c
index 47d0c95b9a01..250b4c67fac8 100644
--- a/lib/maple_tree.c
+++ b/lib/maple_tree.c
@@ -4333,6 +4333,9 @@ static inline bool mas_wr_append(struct ma_wr_state *wr_mas)
struct ma_state *mas = wr_mas->mas;
unsigned char node_pivots = mt_pivots[wr_mas->type];

+ if (mt_in_rcu(mas->tree))
+ return false;
+
if ((mas->index != wr_mas->r_min) && (mas->last == wr_mas->r_max)) {
if (new_end < node_pivots)
wr_mas->pivots[new_end] = wr_mas->pivots[end];
diff --git a/lib/radix-tree.c b/lib/radix-tree.c
index 3c78e1e8b2ad..2ec38f08e4f0 100644
--- a/lib/radix-tree.c
+++ b/lib/radix-tree.c
@@ -1134,7 +1134,6 @@ static void set_iter_tags(struct radix_tree_iter *iter,
void __rcu **radix_tree_iter_resume(void __rcu **slot,
struct radix_tree_iter *iter)
{
- slot++;
iter->index = __radix_tree_iter_add(iter, 1);
iter->next_index = iter->index;
iter->tags = 0;
diff --git a/mm/madvise.c b/mm/madvise.c
index d03e149ffe6e..5973399b2f9b 100644
--- a/mm/madvise.c
+++ b/mm/madvise.c
@@ -654,8 +654,8 @@ static int madvise_free_pte_range(pmd_t *pmd, unsigned long addr,
* deactivate all pages.
*/
if (folio_test_large(folio)) {
- if (folio_mapcount(folio) != 1)
- goto out;
+ if (folio_estimated_sharers(folio) != 1)
+ break;
folio_get(folio);
if (!folio_trylock(folio)) {
folio_put(folio);
diff --git a/mm/memory-failure.c b/mm/memory-failure.c
index 4457f9423e2c..99de0328d1be 100644
--- a/mm/memory-failure.c
+++ b/mm/memory-failure.c
@@ -2591,10 +2591,13 @@ int soft_offline_page(unsigned long pfn, int flags)
if (ret > 0) {
ret = soft_offline_in_use_page(page);
} else if (ret == 0) {
- if (!page_handle_poison(page, true, false) && try_again) {
- try_again = false;
- flags &= ~MF_COUNT_INCREASED;
- goto retry;
+ if (!page_handle_poison(page, true, false)) {
+ if (try_again) {
+ try_again = false;
+ flags &= ~MF_COUNT_INCREASED;
+ goto retry;
+ }
+ ret = -EBUSY;
}
}

diff --git a/mm/shmem.c b/mm/shmem.c
index aba041a3df73..10365ced5b1f 100644
--- a/mm/shmem.c
+++ b/mm/shmem.c
@@ -800,14 +800,16 @@ unsigned long shmem_partial_swap_usage(struct address_space *mapping,
XA_STATE(xas, &mapping->i_pages, start);
struct page *page;
unsigned long swapped = 0;
+ unsigned long max = end - 1;

rcu_read_lock();
- xas_for_each(&xas, page, end - 1) {
+ xas_for_each(&xas, page, max) {
if (xas_retry(&xas, page))
continue;
if (xa_is_value(page))
swapped++;
-
+ if (xas.xa_index == max)
+ break;
if (need_resched()) {
xas_pause(&xas);
cond_resched_rcu();
diff --git a/mm/vmalloc.c b/mm/vmalloc.c
index d5dc361dc104..80bd104a4d42 100644
--- a/mm/vmalloc.c
+++ b/mm/vmalloc.c
@@ -2909,6 +2909,10 @@ void *vmap_pfn(unsigned long *pfns, unsigned int count, pgprot_t prot)
free_vm_area(area);
return NULL;
}
+
+ flush_cache_vmap((unsigned long)area->addr,
+ (unsigned long)area->addr + count * PAGE_SIZE);
+
return area->addr;
}
EXPORT_SYMBOL_GPL(vmap_pfn);
diff --git a/net/Makefile b/net/Makefile
index 6a62e5b27378..0914bea9c335 100644
--- a/net/Makefile
+++ b/net/Makefile
@@ -23,6 +23,7 @@ obj-$(CONFIG_BPFILTER) += bpfilter/
obj-$(CONFIG_PACKET) += packet/
obj-$(CONFIG_NET_KEY) += key/
obj-$(CONFIG_BRIDGE) += bridge/
+obj-$(CONFIG_NET_DEVLINK) += devlink/
obj-$(CONFIG_NET_DSA) += dsa/
obj-$(CONFIG_ATALK) += appletalk/
obj-$(CONFIG_X25) += x25/
diff --git a/net/batman-adv/bat_v_elp.c b/net/batman-adv/bat_v_elp.c
index f1741fbfb617..98a624f32b94 100644
--- a/net/batman-adv/bat_v_elp.c
+++ b/net/batman-adv/bat_v_elp.c
@@ -506,7 +506,7 @@ int batadv_v_elp_packet_recv(struct sk_buff *skb,
struct batadv_priv *bat_priv = netdev_priv(if_incoming->soft_iface);
struct batadv_elp_packet *elp_packet;
struct batadv_hard_iface *primary_if;
- struct ethhdr *ethhdr = (struct ethhdr *)skb_mac_header(skb);
+ struct ethhdr *ethhdr;
bool res;
int ret = NET_RX_DROP;

@@ -514,6 +514,7 @@ int batadv_v_elp_packet_recv(struct sk_buff *skb,
if (!res)
goto free_skb;

+ ethhdr = eth_hdr(skb);
if (batadv_is_my_mac(bat_priv, ethhdr->h_source))
goto free_skb;

diff --git a/net/batman-adv/bat_v_ogm.c b/net/batman-adv/bat_v_ogm.c
index 033639df96d8..9f4815f4c8e8 100644
--- a/net/batman-adv/bat_v_ogm.c
+++ b/net/batman-adv/bat_v_ogm.c
@@ -124,8 +124,10 @@ static void batadv_v_ogm_send_to_if(struct sk_buff *skb,
{
struct batadv_priv *bat_priv = netdev_priv(hard_iface->soft_iface);

- if (hard_iface->if_status != BATADV_IF_ACTIVE)
+ if (hard_iface->if_status != BATADV_IF_ACTIVE) {
+ kfree_skb(skb);
return;
+ }

batadv_inc_counter(bat_priv, BATADV_CNT_MGMT_TX);
batadv_add_counter(bat_priv, BATADV_CNT_MGMT_TX_BYTES,
@@ -986,7 +988,7 @@ int batadv_v_ogm_packet_recv(struct sk_buff *skb,
{
struct batadv_priv *bat_priv = netdev_priv(if_incoming->soft_iface);
struct batadv_ogm2_packet *ogm_packet;
- struct ethhdr *ethhdr = eth_hdr(skb);
+ struct ethhdr *ethhdr;
int ogm_offset;
u8 *packet_pos;
int ret = NET_RX_DROP;
@@ -1000,6 +1002,7 @@ int batadv_v_ogm_packet_recv(struct sk_buff *skb,
if (!batadv_check_management_packet(skb, if_incoming, BATADV_OGM2_HLEN))
goto free_skb;

+ ethhdr = eth_hdr(skb);
if (batadv_is_my_mac(bat_priv, ethhdr->h_source))
goto free_skb;

diff --git a/net/batman-adv/hard-interface.c b/net/batman-adv/hard-interface.c
index 41c1ad33d009..24c9c0c3f316 100644
--- a/net/batman-adv/hard-interface.c
+++ b/net/batman-adv/hard-interface.c
@@ -630,7 +630,19 @@ int batadv_hardif_min_mtu(struct net_device *soft_iface)
*/
void batadv_update_min_mtu(struct net_device *soft_iface)
{
- soft_iface->mtu = batadv_hardif_min_mtu(soft_iface);
+ struct batadv_priv *bat_priv = netdev_priv(soft_iface);
+ int limit_mtu;
+ int mtu;
+
+ mtu = batadv_hardif_min_mtu(soft_iface);
+
+ if (bat_priv->mtu_set_by_user)
+ limit_mtu = bat_priv->mtu_set_by_user;
+ else
+ limit_mtu = ETH_DATA_LEN;
+
+ mtu = min(mtu, limit_mtu);
+ dev_set_mtu(soft_iface, mtu);

/* Check if the local translate table should be cleaned up to match a
* new (and smaller) MTU.
diff --git a/net/batman-adv/netlink.c b/net/batman-adv/netlink.c
index a5e4a4e976cf..86e0664e0511 100644
--- a/net/batman-adv/netlink.c
+++ b/net/batman-adv/netlink.c
@@ -495,7 +495,10 @@ static int batadv_netlink_set_mesh(struct sk_buff *skb, struct genl_info *info)
attr = info->attrs[BATADV_ATTR_FRAGMENTATION_ENABLED];

atomic_set(&bat_priv->fragmentation, !!nla_get_u8(attr));
+
+ rtnl_lock();
batadv_update_min_mtu(bat_priv->soft_iface);
+ rtnl_unlock();
}

if (info->attrs[BATADV_ATTR_GW_BANDWIDTH_DOWN]) {
diff --git a/net/batman-adv/soft-interface.c b/net/batman-adv/soft-interface.c
index 0f5c0679b55a..38d411a52f33 100644
--- a/net/batman-adv/soft-interface.c
+++ b/net/batman-adv/soft-interface.c
@@ -154,11 +154,14 @@ static int batadv_interface_set_mac_addr(struct net_device *dev, void *p)

static int batadv_interface_change_mtu(struct net_device *dev, int new_mtu)
{
+ struct batadv_priv *bat_priv = netdev_priv(dev);
+
/* check ranges */
if (new_mtu < 68 || new_mtu > batadv_hardif_min_mtu(dev))
return -EINVAL;

dev->mtu = new_mtu;
+ bat_priv->mtu_set_by_user = new_mtu;

return 0;
}
diff --git a/net/batman-adv/translation-table.c b/net/batman-adv/translation-table.c
index 01d30c1e412c..5d8cee74772f 100644
--- a/net/batman-adv/translation-table.c
+++ b/net/batman-adv/translation-table.c
@@ -774,7 +774,6 @@ bool batadv_tt_local_add(struct net_device *soft_iface, const u8 *addr,
if (roamed_back) {
batadv_tt_global_free(bat_priv, tt_global,
"Roaming canceled");
- tt_global = NULL;
} else {
/* The global entry has to be marked as ROAMING and
* has to be kept for consistency purpose
diff --git a/net/batman-adv/types.h b/net/batman-adv/types.h
index 758cd797a063..76791815b26b 100644
--- a/net/batman-adv/types.h
+++ b/net/batman-adv/types.h
@@ -1546,6 +1546,12 @@ struct batadv_priv {
/** @soft_iface: net device which holds this struct as private data */
struct net_device *soft_iface;

+ /**
+ * @mtu_set_by_user: MTU was set once by user
+ * protected by rtnl_lock
+ */
+ int mtu_set_by_user;
+
/**
* @bat_counters: mesh internal traffic statistic counters (see
* batadv_counters)
diff --git a/net/can/isotp.c b/net/can/isotp.c
index b3c2a49b189c..8c97f4061ffd 100644
--- a/net/can/isotp.c
+++ b/net/can/isotp.c
@@ -175,12 +175,6 @@ static bool isotp_register_rxid(struct isotp_sock *so)
return (isotp_bc_flags(so) == 0);
}

-static bool isotp_register_txecho(struct isotp_sock *so)
-{
- /* all modes but SF_BROADCAST register for tx echo skbs */
- return (isotp_bc_flags(so) != CAN_ISOTP_SF_BROADCAST);
-}
-
static enum hrtimer_restart isotp_rx_timer_handler(struct hrtimer *hrtimer)
{
struct isotp_sock *so = container_of(hrtimer, struct isotp_sock,
@@ -1176,7 +1170,7 @@ static int isotp_release(struct socket *sock)
lock_sock(sk);

/* remove current filters & unregister */
- if (so->bound && isotp_register_txecho(so)) {
+ if (so->bound) {
if (so->ifindex) {
struct net_device *dev;

@@ -1293,14 +1287,12 @@ static int isotp_bind(struct socket *sock, struct sockaddr *uaddr, int len)
can_rx_register(net, dev, rx_id, SINGLE_MASK(rx_id),
isotp_rcv, sk, "isotp", sk);

- if (isotp_register_txecho(so)) {
- /* no consecutive frame echo skb in flight */
- so->cfecho = 0;
+ /* no consecutive frame echo skb in flight */
+ so->cfecho = 0;

- /* register for echo skb's */
- can_rx_register(net, dev, tx_id, SINGLE_MASK(tx_id),
- isotp_rcv_echo, sk, "isotpe", sk);
- }
+ /* register for echo skb's */
+ can_rx_register(net, dev, tx_id, SINGLE_MASK(tx_id),
+ isotp_rcv_echo, sk, "isotpe", sk);

dev_put(dev);

@@ -1521,7 +1513,7 @@ static void isotp_notify(struct isotp_sock *so, unsigned long msg,
case NETDEV_UNREGISTER:
lock_sock(sk);
/* remove current filters & unregister */
- if (so->bound && isotp_register_txecho(so)) {
+ if (so->bound) {
if (isotp_register_rxid(so))
can_rx_unregister(dev_net(dev), dev, so->rxid,
SINGLE_MASK(so->rxid),
diff --git a/net/can/raw.c b/net/can/raw.c
index 4abab2c3011a..8c104339d538 100644
--- a/net/can/raw.c
+++ b/net/can/raw.c
@@ -84,6 +84,8 @@ struct raw_sock {
struct sock sk;
int bound;
int ifindex;
+ struct net_device *dev;
+ netdevice_tracker dev_tracker;
struct list_head notifier;
int loopback;
int recv_own_msgs;
@@ -277,21 +279,24 @@ static void raw_notify(struct raw_sock *ro, unsigned long msg,
if (!net_eq(dev_net(dev), sock_net(sk)))
return;

- if (ro->ifindex != dev->ifindex)
+ if (ro->dev != dev)
return;

switch (msg) {
case NETDEV_UNREGISTER:
lock_sock(sk);
/* remove current filters & unregister */
- if (ro->bound)
+ if (ro->bound) {
raw_disable_allfilters(dev_net(dev), dev, sk);
+ netdev_put(dev, &ro->dev_tracker);
+ }

if (ro->count > 1)
kfree(ro->filter);

ro->ifindex = 0;
ro->bound = 0;
+ ro->dev = NULL;
ro->count = 0;
release_sock(sk);

@@ -337,6 +342,7 @@ static int raw_init(struct sock *sk)

ro->bound = 0;
ro->ifindex = 0;
+ ro->dev = NULL;

/* set default filter to single entry dfilter */
ro->dfilter.can_id = 0;
@@ -383,18 +389,14 @@ static int raw_release(struct socket *sock)
list_del(&ro->notifier);
spin_unlock(&raw_notifier_lock);

+ rtnl_lock();
lock_sock(sk);

/* remove current filters & unregister */
if (ro->bound) {
- if (ro->ifindex) {
- struct net_device *dev;
-
- dev = dev_get_by_index(sock_net(sk), ro->ifindex);
- if (dev) {
- raw_disable_allfilters(dev_net(dev), dev, sk);
- dev_put(dev);
- }
+ if (ro->dev) {
+ raw_disable_allfilters(dev_net(ro->dev), ro->dev, sk);
+ netdev_put(ro->dev, &ro->dev_tracker);
} else {
raw_disable_allfilters(sock_net(sk), NULL, sk);
}
@@ -405,6 +407,7 @@ static int raw_release(struct socket *sock)

ro->ifindex = 0;
ro->bound = 0;
+ ro->dev = NULL;
ro->count = 0;
free_percpu(ro->uniq);

@@ -412,6 +415,8 @@ static int raw_release(struct socket *sock)
sock->sk = NULL;

release_sock(sk);
+ rtnl_unlock();
+
sock_put(sk);

return 0;
@@ -422,6 +427,7 @@ static int raw_bind(struct socket *sock, struct sockaddr *uaddr, int len)
struct sockaddr_can *addr = (struct sockaddr_can *)uaddr;
struct sock *sk = sock->sk;
struct raw_sock *ro = raw_sk(sk);
+ struct net_device *dev = NULL;
int ifindex;
int err = 0;
int notify_enetdown = 0;
@@ -431,24 +437,23 @@ static int raw_bind(struct socket *sock, struct sockaddr *uaddr, int len)
if (addr->can_family != AF_CAN)
return -EINVAL;

+ rtnl_lock();
lock_sock(sk);

if (ro->bound && addr->can_ifindex == ro->ifindex)
goto out;

if (addr->can_ifindex) {
- struct net_device *dev;
-
dev = dev_get_by_index(sock_net(sk), addr->can_ifindex);
if (!dev) {
err = -ENODEV;
goto out;
}
if (dev->type != ARPHRD_CAN) {
- dev_put(dev);
err = -ENODEV;
- goto out;
+ goto out_put_dev;
}
+
if (!(dev->flags & IFF_UP))
notify_enetdown = 1;

@@ -456,7 +461,9 @@ static int raw_bind(struct socket *sock, struct sockaddr *uaddr, int len)

/* filters set by default/setsockopt */
err = raw_enable_allfilters(sock_net(sk), dev, sk);
- dev_put(dev);
+ if (err)
+ goto out_put_dev;
+
} else {
ifindex = 0;

@@ -467,26 +474,30 @@ static int raw_bind(struct socket *sock, struct sockaddr *uaddr, int len)
if (!err) {
if (ro->bound) {
/* unregister old filters */
- if (ro->ifindex) {
- struct net_device *dev;
-
- dev = dev_get_by_index(sock_net(sk),
- ro->ifindex);
- if (dev) {
- raw_disable_allfilters(dev_net(dev),
- dev, sk);
- dev_put(dev);
- }
+ if (ro->dev) {
+ raw_disable_allfilters(dev_net(ro->dev),
+ ro->dev, sk);
+ /* drop reference to old ro->dev */
+ netdev_put(ro->dev, &ro->dev_tracker);
} else {
raw_disable_allfilters(sock_net(sk), NULL, sk);
}
}
ro->ifindex = ifindex;
ro->bound = 1;
+ /* bind() ok -> hold a reference for new ro->dev */
+ ro->dev = dev;
+ if (ro->dev)
+ netdev_hold(ro->dev, &ro->dev_tracker, GFP_KERNEL);
}

- out:
+out_put_dev:
+ /* remove potential reference from dev_get_by_index() */
+ if (dev)
+ dev_put(dev);
+out:
release_sock(sk);
+ rtnl_unlock();

if (notify_enetdown) {
sk->sk_err = ENETDOWN;
@@ -552,9 +563,9 @@ static int raw_setsockopt(struct socket *sock, int level, int optname,
rtnl_lock();
lock_sock(sk);

- if (ro->bound && ro->ifindex) {
- dev = dev_get_by_index(sock_net(sk), ro->ifindex);
- if (!dev) {
+ dev = ro->dev;
+ if (ro->bound && dev) {
+ if (dev->reg_state != NETREG_REGISTERED) {
if (count > 1)
kfree(filter);
err = -ENODEV;
@@ -595,7 +606,6 @@ static int raw_setsockopt(struct socket *sock, int level, int optname,
ro->count = count;

out_fil:
- dev_put(dev);
release_sock(sk);
rtnl_unlock();

@@ -613,9 +623,9 @@ static int raw_setsockopt(struct socket *sock, int level, int optname,
rtnl_lock();
lock_sock(sk);

- if (ro->bound && ro->ifindex) {
- dev = dev_get_by_index(sock_net(sk), ro->ifindex);
- if (!dev) {
+ dev = ro->dev;
+ if (ro->bound && dev) {
+ if (dev->reg_state != NETREG_REGISTERED) {
err = -ENODEV;
goto out_err;
}
@@ -639,7 +649,6 @@ static int raw_setsockopt(struct socket *sock, int level, int optname,
ro->err_mask = err_mask;

out_err:
- dev_put(dev);
release_sock(sk);
rtnl_unlock();

diff --git a/net/core/Makefile b/net/core/Makefile
index 5857cec87b83..10edd66a8a37 100644
--- a/net/core/Makefile
+++ b/net/core/Makefile
@@ -33,7 +33,6 @@ obj-$(CONFIG_LWTUNNEL) += lwtunnel.o
obj-$(CONFIG_LWTUNNEL_BPF) += lwt_bpf.o
obj-$(CONFIG_DST_CACHE) += dst_cache.o
obj-$(CONFIG_HWBM) += hwbm.o
-obj-$(CONFIG_NET_DEVLINK) += devlink.o
obj-$(CONFIG_GRO_CELLS) += gro_cells.o
obj-$(CONFIG_FAILOVER) += failover.o
obj-$(CONFIG_NET_SOCK_MSG) += skmsg.o
diff --git a/net/core/devlink.c b/net/core/devlink.c
deleted file mode 100644
index 5a4a4b34ac15..000000000000
--- a/net/core/devlink.c
+++ /dev/null
@@ -1,12547 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-or-later
-/*
- * net/core/devlink.c - Network physical/parent device Netlink interface
- *
- * Heavily inspired by net/wireless/
- * Copyright (c) 2016 Mellanox Technologies. All rights reserved.
- * Copyright (c) 2016 Jiri Pirko <jiri@xxxxxxxxxxxx>
- */
-
-#include <linux/etherdevice.h>
-#include <linux/kernel.h>
-#include <linux/module.h>
-#include <linux/types.h>
-#include <linux/slab.h>
-#include <linux/gfp.h>
-#include <linux/device.h>
-#include <linux/list.h>
-#include <linux/netdevice.h>
-#include <linux/spinlock.h>
-#include <linux/refcount.h>
-#include <linux/workqueue.h>
-#include <linux/u64_stats_sync.h>
-#include <linux/timekeeping.h>
-#include <rdma/ib_verbs.h>
-#include <net/netlink.h>
-#include <net/genetlink.h>
-#include <net/rtnetlink.h>
-#include <net/net_namespace.h>
-#include <net/sock.h>
-#include <net/devlink.h>
-#define CREATE_TRACE_POINTS
-#include <trace/events/devlink.h>
-
-#define DEVLINK_RELOAD_STATS_ARRAY_SIZE \
- (__DEVLINK_RELOAD_LIMIT_MAX * __DEVLINK_RELOAD_ACTION_MAX)
-
-struct devlink_dev_stats {
- u32 reload_stats[DEVLINK_RELOAD_STATS_ARRAY_SIZE];
- u32 remote_reload_stats[DEVLINK_RELOAD_STATS_ARRAY_SIZE];
-};
-
-struct devlink {
- u32 index;
- struct list_head port_list;
- struct list_head rate_list;
- struct list_head sb_list;
- struct list_head dpipe_table_list;
- struct list_head resource_list;
- struct list_head param_list;
- struct list_head region_list;
- struct list_head reporter_list;
- struct mutex reporters_lock; /* protects reporter_list */
- struct devlink_dpipe_headers *dpipe_headers;
- struct list_head trap_list;
- struct list_head trap_group_list;
- struct list_head trap_policer_list;
- struct list_head linecard_list;
- struct mutex linecards_lock; /* protects linecard_list */
- const struct devlink_ops *ops;
- u64 features;
- struct xarray snapshot_ids;
- struct devlink_dev_stats stats;
- struct device *dev;
- possible_net_t _net;
- /* Serializes access to devlink instance specific objects such as
- * port, sb, dpipe, resource, params, region, traps and more.
- */
- struct mutex lock;
- struct lock_class_key lock_key;
- u8 reload_failed:1;
- refcount_t refcount;
- struct completion comp;
- struct rcu_head rcu;
- char priv[] __aligned(NETDEV_ALIGN);
-};
-
-struct devlink_linecard_ops;
-struct devlink_linecard_type;
-
-struct devlink_linecard {
- struct list_head list;
- struct devlink *devlink;
- unsigned int index;
- refcount_t refcount;
- const struct devlink_linecard_ops *ops;
- void *priv;
- enum devlink_linecard_state state;
- struct mutex state_lock; /* Protects state */
- const char *type;
- struct devlink_linecard_type *types;
- unsigned int types_count;
- struct devlink *nested_devlink;
-};
-
-/**
- * struct devlink_resource - devlink resource
- * @name: name of the resource
- * @id: id, per devlink instance
- * @size: size of the resource
- * @size_new: updated size of the resource, reload is needed
- * @size_valid: valid in case the total size of the resource is valid
- * including its children
- * @parent: parent resource
- * @size_params: size parameters
- * @list: parent list
- * @resource_list: list of child resources
- * @occ_get: occupancy getter callback
- * @occ_get_priv: occupancy getter callback priv
- */
-struct devlink_resource {
- const char *name;
- u64 id;
- u64 size;
- u64 size_new;
- bool size_valid;
- struct devlink_resource *parent;
- struct devlink_resource_size_params size_params;
- struct list_head list;
- struct list_head resource_list;
- devlink_resource_occ_get_t *occ_get;
- void *occ_get_priv;
-};
-
-void *devlink_priv(struct devlink *devlink)
-{
- return &devlink->priv;
-}
-EXPORT_SYMBOL_GPL(devlink_priv);
-
-struct devlink *priv_to_devlink(void *priv)
-{
- return container_of(priv, struct devlink, priv);
-}
-EXPORT_SYMBOL_GPL(priv_to_devlink);
-
-struct device *devlink_to_dev(const struct devlink *devlink)
-{
- return devlink->dev;
-}
-EXPORT_SYMBOL_GPL(devlink_to_dev);
-
-static struct devlink_dpipe_field devlink_dpipe_fields_ethernet[] = {
- {
- .name = "destination mac",
- .id = DEVLINK_DPIPE_FIELD_ETHERNET_DST_MAC,
- .bitwidth = 48,
- },
-};
-
-struct devlink_dpipe_header devlink_dpipe_header_ethernet = {
- .name = "ethernet",
- .id = DEVLINK_DPIPE_HEADER_ETHERNET,
- .fields = devlink_dpipe_fields_ethernet,
- .fields_count = ARRAY_SIZE(devlink_dpipe_fields_ethernet),
- .global = true,
-};
-EXPORT_SYMBOL_GPL(devlink_dpipe_header_ethernet);
-
-static struct devlink_dpipe_field devlink_dpipe_fields_ipv4[] = {
- {
- .name = "destination ip",
- .id = DEVLINK_DPIPE_FIELD_IPV4_DST_IP,
- .bitwidth = 32,
- },
-};
-
-struct devlink_dpipe_header devlink_dpipe_header_ipv4 = {
- .name = "ipv4",
- .id = DEVLINK_DPIPE_HEADER_IPV4,
- .fields = devlink_dpipe_fields_ipv4,
- .fields_count = ARRAY_SIZE(devlink_dpipe_fields_ipv4),
- .global = true,
-};
-EXPORT_SYMBOL_GPL(devlink_dpipe_header_ipv4);
-
-static struct devlink_dpipe_field devlink_dpipe_fields_ipv6[] = {
- {
- .name = "destination ip",
- .id = DEVLINK_DPIPE_FIELD_IPV6_DST_IP,
- .bitwidth = 128,
- },
-};
-
-struct devlink_dpipe_header devlink_dpipe_header_ipv6 = {
- .name = "ipv6",
- .id = DEVLINK_DPIPE_HEADER_IPV6,
- .fields = devlink_dpipe_fields_ipv6,
- .fields_count = ARRAY_SIZE(devlink_dpipe_fields_ipv6),
- .global = true,
-};
-EXPORT_SYMBOL_GPL(devlink_dpipe_header_ipv6);
-
-EXPORT_TRACEPOINT_SYMBOL_GPL(devlink_hwmsg);
-EXPORT_TRACEPOINT_SYMBOL_GPL(devlink_hwerr);
-EXPORT_TRACEPOINT_SYMBOL_GPL(devlink_trap_report);
-
-static const struct nla_policy devlink_function_nl_policy[DEVLINK_PORT_FUNCTION_ATTR_MAX + 1] = {
- [DEVLINK_PORT_FUNCTION_ATTR_HW_ADDR] = { .type = NLA_BINARY },
- [DEVLINK_PORT_FN_ATTR_STATE] =
- NLA_POLICY_RANGE(NLA_U8, DEVLINK_PORT_FN_STATE_INACTIVE,
- DEVLINK_PORT_FN_STATE_ACTIVE),
-};
-
-static const struct nla_policy devlink_selftest_nl_policy[DEVLINK_ATTR_SELFTEST_ID_MAX + 1] = {
- [DEVLINK_ATTR_SELFTEST_ID_FLASH] = { .type = NLA_FLAG },
-};
-
-static DEFINE_XARRAY_FLAGS(devlinks, XA_FLAGS_ALLOC);
-#define DEVLINK_REGISTERED XA_MARK_1
-#define DEVLINK_UNREGISTERING XA_MARK_2
-
-/* devlink instances are open to the access from the user space after
- * devlink_register() call. Such logical barrier allows us to have certain
- * expectations related to locking.
- *
- * Before *_register() - we are in initialization stage and no parallel
- * access possible to the devlink instance. All drivers perform that phase
- * by implicitly holding device_lock.
- *
- * After *_register() - users and driver can access devlink instance at
- * the same time.
- */
-#define ASSERT_DEVLINK_REGISTERED(d) \
- WARN_ON_ONCE(!xa_get_mark(&devlinks, (d)->index, DEVLINK_REGISTERED))
-#define ASSERT_DEVLINK_NOT_REGISTERED(d) \
- WARN_ON_ONCE(xa_get_mark(&devlinks, (d)->index, DEVLINK_REGISTERED))
-
-struct net *devlink_net(const struct devlink *devlink)
-{
- return read_pnet(&devlink->_net);
-}
-EXPORT_SYMBOL_GPL(devlink_net);
-
-static void __devlink_put_rcu(struct rcu_head *head)
-{
- struct devlink *devlink = container_of(head, struct devlink, rcu);
-
- complete(&devlink->comp);
-}
-
-void devlink_put(struct devlink *devlink)
-{
- if (refcount_dec_and_test(&devlink->refcount))
- /* Make sure unregister operation that may await the completion
- * is unblocked only after all users are after the end of
- * RCU grace period.
- */
- call_rcu(&devlink->rcu, __devlink_put_rcu);
-}
-
-struct devlink *__must_check devlink_try_get(struct devlink *devlink)
-{
- if (refcount_inc_not_zero(&devlink->refcount))
- return devlink;
- return NULL;
-}
-
-void devl_assert_locked(struct devlink *devlink)
-{
- lockdep_assert_held(&devlink->lock);
-}
-EXPORT_SYMBOL_GPL(devl_assert_locked);
-
-#ifdef CONFIG_LOCKDEP
-/* For use in conjunction with LOCKDEP only e.g. rcu_dereference_protected() */
-bool devl_lock_is_held(struct devlink *devlink)
-{
- return lockdep_is_held(&devlink->lock);
-}
-EXPORT_SYMBOL_GPL(devl_lock_is_held);
-#endif
-
-void devl_lock(struct devlink *devlink)
-{
- mutex_lock(&devlink->lock);
-}
-EXPORT_SYMBOL_GPL(devl_lock);
-
-int devl_trylock(struct devlink *devlink)
-{
- return mutex_trylock(&devlink->lock);
-}
-EXPORT_SYMBOL_GPL(devl_trylock);
-
-void devl_unlock(struct devlink *devlink)
-{
- mutex_unlock(&devlink->lock);
-}
-EXPORT_SYMBOL_GPL(devl_unlock);
-
-static struct devlink *
-devlinks_xa_find_get(struct net *net, unsigned long *indexp, xa_mark_t filter,
- void * (*xa_find_fn)(struct xarray *, unsigned long *,
- unsigned long, xa_mark_t))
-{
- struct devlink *devlink;
-
- rcu_read_lock();
-retry:
- devlink = xa_find_fn(&devlinks, indexp, ULONG_MAX, DEVLINK_REGISTERED);
- if (!devlink)
- goto unlock;
-
- /* In case devlink_unregister() was already called and "unregistering"
- * mark was set, do not allow to get a devlink reference here.
- * This prevents live-lock of devlink_unregister() wait for completion.
- */
- if (xa_get_mark(&devlinks, *indexp, DEVLINK_UNREGISTERING))
- goto retry;
-
- /* For a possible retry, the xa_find_after() should be always used */
- xa_find_fn = xa_find_after;
- if (!devlink_try_get(devlink))
- goto retry;
- if (!net_eq(devlink_net(devlink), net)) {
- devlink_put(devlink);
- goto retry;
- }
-unlock:
- rcu_read_unlock();
- return devlink;
-}
-
-static struct devlink *devlinks_xa_find_get_first(struct net *net,
- unsigned long *indexp,
- xa_mark_t filter)
-{
- return devlinks_xa_find_get(net, indexp, filter, xa_find);
-}
-
-static struct devlink *devlinks_xa_find_get_next(struct net *net,
- unsigned long *indexp,
- xa_mark_t filter)
-{
- return devlinks_xa_find_get(net, indexp, filter, xa_find_after);
-}
-
-/* Iterate over devlink pointers which were possible to get reference to.
- * devlink_put() needs to be called for each iterated devlink pointer
- * in loop body in order to release the reference.
- */
-#define devlinks_xa_for_each_get(net, index, devlink, filter) \
- for (index = 0, \
- devlink = devlinks_xa_find_get_first(net, &index, filter); \
- devlink; devlink = devlinks_xa_find_get_next(net, &index, filter))
-
-#define devlinks_xa_for_each_registered_get(net, index, devlink) \
- devlinks_xa_for_each_get(net, index, devlink, DEVLINK_REGISTERED)
-
-static struct devlink *devlink_get_from_attrs(struct net *net,
- struct nlattr **attrs)
-{
- struct devlink *devlink;
- unsigned long index;
- char *busname;
- char *devname;
-
- if (!attrs[DEVLINK_ATTR_BUS_NAME] || !attrs[DEVLINK_ATTR_DEV_NAME])
- return ERR_PTR(-EINVAL);
-
- busname = nla_data(attrs[DEVLINK_ATTR_BUS_NAME]);
- devname = nla_data(attrs[DEVLINK_ATTR_DEV_NAME]);
-
- devlinks_xa_for_each_registered_get(net, index, devlink) {
- if (strcmp(devlink->dev->bus->name, busname) == 0 &&
- strcmp(dev_name(devlink->dev), devname) == 0)
- return devlink;
- devlink_put(devlink);
- }
-
- return ERR_PTR(-ENODEV);
-}
-
-#define ASSERT_DEVLINK_PORT_REGISTERED(devlink_port) \
- WARN_ON_ONCE(!(devlink_port)->registered)
-#define ASSERT_DEVLINK_PORT_NOT_REGISTERED(devlink_port) \
- WARN_ON_ONCE((devlink_port)->registered)
-#define ASSERT_DEVLINK_PORT_INITIALIZED(devlink_port) \
- WARN_ON_ONCE(!(devlink_port)->initialized)
-
-static struct devlink_port *devlink_port_get_by_index(struct devlink *devlink,
- unsigned int port_index)
-{
- struct devlink_port *devlink_port;
-
- list_for_each_entry(devlink_port, &devlink->port_list, list) {
- if (devlink_port->index == port_index)
- return devlink_port;
- }
- return NULL;
-}
-
-static bool devlink_port_index_exists(struct devlink *devlink,
- unsigned int port_index)
-{
- return devlink_port_get_by_index(devlink, port_index);
-}
-
-static struct devlink_port *devlink_port_get_from_attrs(struct devlink *devlink,
- struct nlattr **attrs)
-{
- if (attrs[DEVLINK_ATTR_PORT_INDEX]) {
- u32 port_index = nla_get_u32(attrs[DEVLINK_ATTR_PORT_INDEX]);
- struct devlink_port *devlink_port;
-
- devlink_port = devlink_port_get_by_index(devlink, port_index);
- if (!devlink_port)
- return ERR_PTR(-ENODEV);
- return devlink_port;
- }
- return ERR_PTR(-EINVAL);
-}
-
-static struct devlink_port *devlink_port_get_from_info(struct devlink *devlink,
- struct genl_info *info)
-{
- return devlink_port_get_from_attrs(devlink, info->attrs);
-}
-
-static inline bool
-devlink_rate_is_leaf(struct devlink_rate *devlink_rate)
-{
- return devlink_rate->type == DEVLINK_RATE_TYPE_LEAF;
-}
-
-static inline bool
-devlink_rate_is_node(struct devlink_rate *devlink_rate)
-{
- return devlink_rate->type == DEVLINK_RATE_TYPE_NODE;
-}
-
-static struct devlink_rate *
-devlink_rate_leaf_get_from_info(struct devlink *devlink, struct genl_info *info)
-{
- struct devlink_rate *devlink_rate;
- struct devlink_port *devlink_port;
-
- devlink_port = devlink_port_get_from_attrs(devlink, info->attrs);
- if (IS_ERR(devlink_port))
- return ERR_CAST(devlink_port);
- devlink_rate = devlink_port->devlink_rate;
- return devlink_rate ?: ERR_PTR(-ENODEV);
-}
-
-static struct devlink_rate *
-devlink_rate_node_get_by_name(struct devlink *devlink, const char *node_name)
-{
- static struct devlink_rate *devlink_rate;
-
- list_for_each_entry(devlink_rate, &devlink->rate_list, list) {
- if (devlink_rate_is_node(devlink_rate) &&
- !strcmp(node_name, devlink_rate->name))
- return devlink_rate;
- }
- return ERR_PTR(-ENODEV);
-}
-
-static struct devlink_rate *
-devlink_rate_node_get_from_attrs(struct devlink *devlink, struct nlattr **attrs)
-{
- const char *rate_node_name;
- size_t len;
-
- if (!attrs[DEVLINK_ATTR_RATE_NODE_NAME])
- return ERR_PTR(-EINVAL);
- rate_node_name = nla_data(attrs[DEVLINK_ATTR_RATE_NODE_NAME]);
- len = strlen(rate_node_name);
- /* Name cannot be empty or decimal number */
- if (!len || strspn(rate_node_name, "0123456789") == len)
- return ERR_PTR(-EINVAL);
-
- return devlink_rate_node_get_by_name(devlink, rate_node_name);
-}
-
-static struct devlink_rate *
-devlink_rate_node_get_from_info(struct devlink *devlink, struct genl_info *info)
-{
- return devlink_rate_node_get_from_attrs(devlink, info->attrs);
-}
-
-static struct devlink_rate *
-devlink_rate_get_from_info(struct devlink *devlink, struct genl_info *info)
-{
- struct nlattr **attrs = info->attrs;
-
- if (attrs[DEVLINK_ATTR_PORT_INDEX])
- return devlink_rate_leaf_get_from_info(devlink, info);
- else if (attrs[DEVLINK_ATTR_RATE_NODE_NAME])
- return devlink_rate_node_get_from_info(devlink, info);
- else
- return ERR_PTR(-EINVAL);
-}
-
-static struct devlink_linecard *
-devlink_linecard_get_by_index(struct devlink *devlink,
- unsigned int linecard_index)
-{
- struct devlink_linecard *devlink_linecard;
-
- list_for_each_entry(devlink_linecard, &devlink->linecard_list, list) {
- if (devlink_linecard->index == linecard_index)
- return devlink_linecard;
- }
- return NULL;
-}
-
-static bool devlink_linecard_index_exists(struct devlink *devlink,
- unsigned int linecard_index)
-{
- return devlink_linecard_get_by_index(devlink, linecard_index);
-}
-
-static struct devlink_linecard *
-devlink_linecard_get_from_attrs(struct devlink *devlink, struct nlattr **attrs)
-{
- if (attrs[DEVLINK_ATTR_LINECARD_INDEX]) {
- u32 linecard_index = nla_get_u32(attrs[DEVLINK_ATTR_LINECARD_INDEX]);
- struct devlink_linecard *linecard;
-
- mutex_lock(&devlink->linecards_lock);
- linecard = devlink_linecard_get_by_index(devlink, linecard_index);
- if (linecard)
- refcount_inc(&linecard->refcount);
- mutex_unlock(&devlink->linecards_lock);
- if (!linecard)
- return ERR_PTR(-ENODEV);
- return linecard;
- }
- return ERR_PTR(-EINVAL);
-}
-
-static struct devlink_linecard *
-devlink_linecard_get_from_info(struct devlink *devlink, struct genl_info *info)
-{
- return devlink_linecard_get_from_attrs(devlink, info->attrs);
-}
-
-static void devlink_linecard_put(struct devlink_linecard *linecard)
-{
- if (refcount_dec_and_test(&linecard->refcount)) {
- mutex_destroy(&linecard->state_lock);
- kfree(linecard);
- }
-}
-
-struct devlink_sb {
- struct list_head list;
- unsigned int index;
- u32 size;
- u16 ingress_pools_count;
- u16 egress_pools_count;
- u16 ingress_tc_count;
- u16 egress_tc_count;
-};
-
-static u16 devlink_sb_pool_count(struct devlink_sb *devlink_sb)
-{
- return devlink_sb->ingress_pools_count + devlink_sb->egress_pools_count;
-}
-
-static struct devlink_sb *devlink_sb_get_by_index(struct devlink *devlink,
- unsigned int sb_index)
-{
- struct devlink_sb *devlink_sb;
-
- list_for_each_entry(devlink_sb, &devlink->sb_list, list) {
- if (devlink_sb->index == sb_index)
- return devlink_sb;
- }
- return NULL;
-}
-
-static bool devlink_sb_index_exists(struct devlink *devlink,
- unsigned int sb_index)
-{
- return devlink_sb_get_by_index(devlink, sb_index);
-}
-
-static struct devlink_sb *devlink_sb_get_from_attrs(struct devlink *devlink,
- struct nlattr **attrs)
-{
- if (attrs[DEVLINK_ATTR_SB_INDEX]) {
- u32 sb_index = nla_get_u32(attrs[DEVLINK_ATTR_SB_INDEX]);
- struct devlink_sb *devlink_sb;
-
- devlink_sb = devlink_sb_get_by_index(devlink, sb_index);
- if (!devlink_sb)
- return ERR_PTR(-ENODEV);
- return devlink_sb;
- }
- return ERR_PTR(-EINVAL);
-}
-
-static struct devlink_sb *devlink_sb_get_from_info(struct devlink *devlink,
- struct genl_info *info)
-{
- return devlink_sb_get_from_attrs(devlink, info->attrs);
-}
-
-static int devlink_sb_pool_index_get_from_attrs(struct devlink_sb *devlink_sb,
- struct nlattr **attrs,
- u16 *p_pool_index)
-{
- u16 val;
-
- if (!attrs[DEVLINK_ATTR_SB_POOL_INDEX])
- return -EINVAL;
-
- val = nla_get_u16(attrs[DEVLINK_ATTR_SB_POOL_INDEX]);
- if (val >= devlink_sb_pool_count(devlink_sb))
- return -EINVAL;
- *p_pool_index = val;
- return 0;
-}
-
-static int devlink_sb_pool_index_get_from_info(struct devlink_sb *devlink_sb,
- struct genl_info *info,
- u16 *p_pool_index)
-{
- return devlink_sb_pool_index_get_from_attrs(devlink_sb, info->attrs,
- p_pool_index);
-}
-
-static int
-devlink_sb_pool_type_get_from_attrs(struct nlattr **attrs,
- enum devlink_sb_pool_type *p_pool_type)
-{
- u8 val;
-
- if (!attrs[DEVLINK_ATTR_SB_POOL_TYPE])
- return -EINVAL;
-
- val = nla_get_u8(attrs[DEVLINK_ATTR_SB_POOL_TYPE]);
- if (val != DEVLINK_SB_POOL_TYPE_INGRESS &&
- val != DEVLINK_SB_POOL_TYPE_EGRESS)
- return -EINVAL;
- *p_pool_type = val;
- return 0;
-}
-
-static int
-devlink_sb_pool_type_get_from_info(struct genl_info *info,
- enum devlink_sb_pool_type *p_pool_type)
-{
- return devlink_sb_pool_type_get_from_attrs(info->attrs, p_pool_type);
-}
-
-static int
-devlink_sb_th_type_get_from_attrs(struct nlattr **attrs,
- enum devlink_sb_threshold_type *p_th_type)
-{
- u8 val;
-
- if (!attrs[DEVLINK_ATTR_SB_POOL_THRESHOLD_TYPE])
- return -EINVAL;
-
- val = nla_get_u8(attrs[DEVLINK_ATTR_SB_POOL_THRESHOLD_TYPE]);
- if (val != DEVLINK_SB_THRESHOLD_TYPE_STATIC &&
- val != DEVLINK_SB_THRESHOLD_TYPE_DYNAMIC)
- return -EINVAL;
- *p_th_type = val;
- return 0;
-}
-
-static int
-devlink_sb_th_type_get_from_info(struct genl_info *info,
- enum devlink_sb_threshold_type *p_th_type)
-{
- return devlink_sb_th_type_get_from_attrs(info->attrs, p_th_type);
-}
-
-static int
-devlink_sb_tc_index_get_from_attrs(struct devlink_sb *devlink_sb,
- struct nlattr **attrs,
- enum devlink_sb_pool_type pool_type,
- u16 *p_tc_index)
-{
- u16 val;
-
- if (!attrs[DEVLINK_ATTR_SB_TC_INDEX])
- return -EINVAL;
-
- val = nla_get_u16(attrs[DEVLINK_ATTR_SB_TC_INDEX]);
- if (pool_type == DEVLINK_SB_POOL_TYPE_INGRESS &&
- val >= devlink_sb->ingress_tc_count)
- return -EINVAL;
- if (pool_type == DEVLINK_SB_POOL_TYPE_EGRESS &&
- val >= devlink_sb->egress_tc_count)
- return -EINVAL;
- *p_tc_index = val;
- return 0;
-}
-
-static int
-devlink_sb_tc_index_get_from_info(struct devlink_sb *devlink_sb,
- struct genl_info *info,
- enum devlink_sb_pool_type pool_type,
- u16 *p_tc_index)
-{
- return devlink_sb_tc_index_get_from_attrs(devlink_sb, info->attrs,
- pool_type, p_tc_index);
-}
-
-struct devlink_region {
- struct devlink *devlink;
- struct devlink_port *port;
- struct list_head list;
- union {
- const struct devlink_region_ops *ops;
- const struct devlink_port_region_ops *port_ops;
- };
- struct mutex snapshot_lock; /* protects snapshot_list,
- * max_snapshots and cur_snapshots
- * consistency.
- */
- struct list_head snapshot_list;
- u32 max_snapshots;
- u32 cur_snapshots;
- u64 size;
-};
-
-struct devlink_snapshot {
- struct list_head list;
- struct devlink_region *region;
- u8 *data;
- u32 id;
-};
-
-static struct devlink_region *
-devlink_region_get_by_name(struct devlink *devlink, const char *region_name)
-{
- struct devlink_region *region;
-
- list_for_each_entry(region, &devlink->region_list, list)
- if (!strcmp(region->ops->name, region_name))
- return region;
-
- return NULL;
-}
-
-static struct devlink_region *
-devlink_port_region_get_by_name(struct devlink_port *port,
- const char *region_name)
-{
- struct devlink_region *region;
-
- list_for_each_entry(region, &port->region_list, list)
- if (!strcmp(region->ops->name, region_name))
- return region;
-
- return NULL;
-}
-
-static struct devlink_snapshot *
-devlink_region_snapshot_get_by_id(struct devlink_region *region, u32 id)
-{
- struct devlink_snapshot *snapshot;
-
- list_for_each_entry(snapshot, &region->snapshot_list, list)
- if (snapshot->id == id)
- return snapshot;
-
- return NULL;
-}
-
-#define DEVLINK_NL_FLAG_NEED_PORT BIT(0)
-#define DEVLINK_NL_FLAG_NEED_DEVLINK_OR_PORT BIT(1)
-#define DEVLINK_NL_FLAG_NEED_RATE BIT(2)
-#define DEVLINK_NL_FLAG_NEED_RATE_NODE BIT(3)
-#define DEVLINK_NL_FLAG_NEED_LINECARD BIT(4)
-
-static int devlink_nl_pre_doit(const struct genl_ops *ops,
- struct sk_buff *skb, struct genl_info *info)
-{
- struct devlink_linecard *linecard;
- struct devlink_port *devlink_port;
- struct devlink *devlink;
- int err;
-
- devlink = devlink_get_from_attrs(genl_info_net(info), info->attrs);
- if (IS_ERR(devlink))
- return PTR_ERR(devlink);
- devl_lock(devlink);
- info->user_ptr[0] = devlink;
- if (ops->internal_flags & DEVLINK_NL_FLAG_NEED_PORT) {
- devlink_port = devlink_port_get_from_info(devlink, info);
- if (IS_ERR(devlink_port)) {
- err = PTR_ERR(devlink_port);
- goto unlock;
- }
- info->user_ptr[1] = devlink_port;
- } else if (ops->internal_flags & DEVLINK_NL_FLAG_NEED_DEVLINK_OR_PORT) {
- devlink_port = devlink_port_get_from_info(devlink, info);
- if (!IS_ERR(devlink_port))
- info->user_ptr[1] = devlink_port;
- } else if (ops->internal_flags & DEVLINK_NL_FLAG_NEED_RATE) {
- struct devlink_rate *devlink_rate;
-
- devlink_rate = devlink_rate_get_from_info(devlink, info);
- if (IS_ERR(devlink_rate)) {
- err = PTR_ERR(devlink_rate);
- goto unlock;
- }
- info->user_ptr[1] = devlink_rate;
- } else if (ops->internal_flags & DEVLINK_NL_FLAG_NEED_RATE_NODE) {
- struct devlink_rate *rate_node;
-
- rate_node = devlink_rate_node_get_from_info(devlink, info);
- if (IS_ERR(rate_node)) {
- err = PTR_ERR(rate_node);
- goto unlock;
- }
- info->user_ptr[1] = rate_node;
- } else if (ops->internal_flags & DEVLINK_NL_FLAG_NEED_LINECARD) {
- linecard = devlink_linecard_get_from_info(devlink, info);
- if (IS_ERR(linecard)) {
- err = PTR_ERR(linecard);
- goto unlock;
- }
- info->user_ptr[1] = linecard;
- }
- return 0;
-
-unlock:
- devl_unlock(devlink);
- devlink_put(devlink);
- return err;
-}
-
-static void devlink_nl_post_doit(const struct genl_ops *ops,
- struct sk_buff *skb, struct genl_info *info)
-{
- struct devlink_linecard *linecard;
- struct devlink *devlink;
-
- devlink = info->user_ptr[0];
- if (ops->internal_flags & DEVLINK_NL_FLAG_NEED_LINECARD) {
- linecard = info->user_ptr[1];
- devlink_linecard_put(linecard);
- }
- devl_unlock(devlink);
- devlink_put(devlink);
-}
-
-static struct genl_family devlink_nl_family;
-
-enum devlink_multicast_groups {
- DEVLINK_MCGRP_CONFIG,
-};
-
-static const struct genl_multicast_group devlink_nl_mcgrps[] = {
- [DEVLINK_MCGRP_CONFIG] = { .name = DEVLINK_GENL_MCGRP_CONFIG_NAME },
-};
-
-static int devlink_nl_put_handle(struct sk_buff *msg, struct devlink *devlink)
-{
- if (nla_put_string(msg, DEVLINK_ATTR_BUS_NAME, devlink->dev->bus->name))
- return -EMSGSIZE;
- if (nla_put_string(msg, DEVLINK_ATTR_DEV_NAME, dev_name(devlink->dev)))
- return -EMSGSIZE;
- return 0;
-}
-
-static int devlink_nl_put_nested_handle(struct sk_buff *msg, struct devlink *devlink)
-{
- struct nlattr *nested_attr;
-
- nested_attr = nla_nest_start(msg, DEVLINK_ATTR_NESTED_DEVLINK);
- if (!nested_attr)
- return -EMSGSIZE;
- if (devlink_nl_put_handle(msg, devlink))
- goto nla_put_failure;
-
- nla_nest_end(msg, nested_attr);
- return 0;
-
-nla_put_failure:
- nla_nest_cancel(msg, nested_attr);
- return -EMSGSIZE;
-}
-
-struct devlink_reload_combination {
- enum devlink_reload_action action;
- enum devlink_reload_limit limit;
-};
-
-static const struct devlink_reload_combination devlink_reload_invalid_combinations[] = {
- {
- /* can't reinitialize driver with no down time */
- .action = DEVLINK_RELOAD_ACTION_DRIVER_REINIT,
- .limit = DEVLINK_RELOAD_LIMIT_NO_RESET,
- },
-};
-
-static bool
-devlink_reload_combination_is_invalid(enum devlink_reload_action action,
- enum devlink_reload_limit limit)
-{
- int i;
-
- for (i = 0; i < ARRAY_SIZE(devlink_reload_invalid_combinations); i++)
- if (devlink_reload_invalid_combinations[i].action == action &&
- devlink_reload_invalid_combinations[i].limit == limit)
- return true;
- return false;
-}
-
-static bool
-devlink_reload_action_is_supported(struct devlink *devlink, enum devlink_reload_action action)
-{
- return test_bit(action, &devlink->ops->reload_actions);
-}
-
-static bool
-devlink_reload_limit_is_supported(struct devlink *devlink, enum devlink_reload_limit limit)
-{
- return test_bit(limit, &devlink->ops->reload_limits);
-}
-
-static int devlink_reload_stat_put(struct sk_buff *msg,
- enum devlink_reload_limit limit, u32 value)
-{
- struct nlattr *reload_stats_entry;
-
- reload_stats_entry = nla_nest_start(msg, DEVLINK_ATTR_RELOAD_STATS_ENTRY);
- if (!reload_stats_entry)
- return -EMSGSIZE;
-
- if (nla_put_u8(msg, DEVLINK_ATTR_RELOAD_STATS_LIMIT, limit) ||
- nla_put_u32(msg, DEVLINK_ATTR_RELOAD_STATS_VALUE, value))
- goto nla_put_failure;
- nla_nest_end(msg, reload_stats_entry);
- return 0;
-
-nla_put_failure:
- nla_nest_cancel(msg, reload_stats_entry);
- return -EMSGSIZE;
-}
-
-static int devlink_reload_stats_put(struct sk_buff *msg, struct devlink *devlink, bool is_remote)
-{
- struct nlattr *reload_stats_attr, *act_info, *act_stats;
- int i, j, stat_idx;
- u32 value;
-
- if (!is_remote)
- reload_stats_attr = nla_nest_start(msg, DEVLINK_ATTR_RELOAD_STATS);
- else
- reload_stats_attr = nla_nest_start(msg, DEVLINK_ATTR_REMOTE_RELOAD_STATS);
-
- if (!reload_stats_attr)
- return -EMSGSIZE;
-
- for (i = 0; i <= DEVLINK_RELOAD_ACTION_MAX; i++) {
- if ((!is_remote &&
- !devlink_reload_action_is_supported(devlink, i)) ||
- i == DEVLINK_RELOAD_ACTION_UNSPEC)
- continue;
- act_info = nla_nest_start(msg, DEVLINK_ATTR_RELOAD_ACTION_INFO);
- if (!act_info)
- goto nla_put_failure;
-
- if (nla_put_u8(msg, DEVLINK_ATTR_RELOAD_ACTION, i))
- goto action_info_nest_cancel;
- act_stats = nla_nest_start(msg, DEVLINK_ATTR_RELOAD_ACTION_STATS);
- if (!act_stats)
- goto action_info_nest_cancel;
-
- for (j = 0; j <= DEVLINK_RELOAD_LIMIT_MAX; j++) {
- /* Remote stats are shown even if not locally supported.
- * Stats of actions with unspecified limit are shown
- * though drivers don't need to register unspecified
- * limit.
- */
- if ((!is_remote && j != DEVLINK_RELOAD_LIMIT_UNSPEC &&
- !devlink_reload_limit_is_supported(devlink, j)) ||
- devlink_reload_combination_is_invalid(i, j))
- continue;
-
- stat_idx = j * __DEVLINK_RELOAD_ACTION_MAX + i;
- if (!is_remote)
- value = devlink->stats.reload_stats[stat_idx];
- else
- value = devlink->stats.remote_reload_stats[stat_idx];
- if (devlink_reload_stat_put(msg, j, value))
- goto action_stats_nest_cancel;
- }
- nla_nest_end(msg, act_stats);
- nla_nest_end(msg, act_info);
- }
- nla_nest_end(msg, reload_stats_attr);
- return 0;
-
-action_stats_nest_cancel:
- nla_nest_cancel(msg, act_stats);
-action_info_nest_cancel:
- nla_nest_cancel(msg, act_info);
-nla_put_failure:
- nla_nest_cancel(msg, reload_stats_attr);
- return -EMSGSIZE;
-}
-
-static int devlink_nl_fill(struct sk_buff *msg, struct devlink *devlink,
- enum devlink_command cmd, u32 portid,
- u32 seq, int flags)
-{
- struct nlattr *dev_stats;
- void *hdr;
-
- hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
- if (!hdr)
- return -EMSGSIZE;
-
- if (devlink_nl_put_handle(msg, devlink))
- goto nla_put_failure;
- if (nla_put_u8(msg, DEVLINK_ATTR_RELOAD_FAILED, devlink->reload_failed))
- goto nla_put_failure;
-
- dev_stats = nla_nest_start(msg, DEVLINK_ATTR_DEV_STATS);
- if (!dev_stats)
- goto nla_put_failure;
-
- if (devlink_reload_stats_put(msg, devlink, false))
- goto dev_stats_nest_cancel;
- if (devlink_reload_stats_put(msg, devlink, true))
- goto dev_stats_nest_cancel;
-
- nla_nest_end(msg, dev_stats);
- genlmsg_end(msg, hdr);
- return 0;
-
-dev_stats_nest_cancel:
- nla_nest_cancel(msg, dev_stats);
-nla_put_failure:
- genlmsg_cancel(msg, hdr);
- return -EMSGSIZE;
-}
-
-static void devlink_notify(struct devlink *devlink, enum devlink_command cmd)
-{
- struct sk_buff *msg;
- int err;
-
- WARN_ON(cmd != DEVLINK_CMD_NEW && cmd != DEVLINK_CMD_DEL);
- WARN_ON(!xa_get_mark(&devlinks, devlink->index, DEVLINK_REGISTERED));
-
- msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
- if (!msg)
- return;
-
- err = devlink_nl_fill(msg, devlink, cmd, 0, 0, 0);
- if (err) {
- nlmsg_free(msg);
- return;
- }
-
- genlmsg_multicast_netns(&devlink_nl_family, devlink_net(devlink),
- msg, 0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL);
-}
-
-static int devlink_nl_port_attrs_put(struct sk_buff *msg,
- struct devlink_port *devlink_port)
-{
- struct devlink_port_attrs *attrs = &devlink_port->attrs;
-
- if (!devlink_port->attrs_set)
- return 0;
- if (attrs->lanes) {
- if (nla_put_u32(msg, DEVLINK_ATTR_PORT_LANES, attrs->lanes))
- return -EMSGSIZE;
- }
- if (nla_put_u8(msg, DEVLINK_ATTR_PORT_SPLITTABLE, attrs->splittable))
- return -EMSGSIZE;
- if (nla_put_u16(msg, DEVLINK_ATTR_PORT_FLAVOUR, attrs->flavour))
- return -EMSGSIZE;
- switch (devlink_port->attrs.flavour) {
- case DEVLINK_PORT_FLAVOUR_PCI_PF:
- if (nla_put_u32(msg, DEVLINK_ATTR_PORT_CONTROLLER_NUMBER,
- attrs->pci_pf.controller) ||
- nla_put_u16(msg, DEVLINK_ATTR_PORT_PCI_PF_NUMBER, attrs->pci_pf.pf))
- return -EMSGSIZE;
- if (nla_put_u8(msg, DEVLINK_ATTR_PORT_EXTERNAL, attrs->pci_pf.external))
- return -EMSGSIZE;
- break;
- case DEVLINK_PORT_FLAVOUR_PCI_VF:
- if (nla_put_u32(msg, DEVLINK_ATTR_PORT_CONTROLLER_NUMBER,
- attrs->pci_vf.controller) ||
- nla_put_u16(msg, DEVLINK_ATTR_PORT_PCI_PF_NUMBER, attrs->pci_vf.pf) ||
- nla_put_u16(msg, DEVLINK_ATTR_PORT_PCI_VF_NUMBER, attrs->pci_vf.vf))
- return -EMSGSIZE;
- if (nla_put_u8(msg, DEVLINK_ATTR_PORT_EXTERNAL, attrs->pci_vf.external))
- return -EMSGSIZE;
- break;
- case DEVLINK_PORT_FLAVOUR_PCI_SF:
- if (nla_put_u32(msg, DEVLINK_ATTR_PORT_CONTROLLER_NUMBER,
- attrs->pci_sf.controller) ||
- nla_put_u16(msg, DEVLINK_ATTR_PORT_PCI_PF_NUMBER,
- attrs->pci_sf.pf) ||
- nla_put_u32(msg, DEVLINK_ATTR_PORT_PCI_SF_NUMBER,
- attrs->pci_sf.sf))
- return -EMSGSIZE;
- break;
- case DEVLINK_PORT_FLAVOUR_PHYSICAL:
- case DEVLINK_PORT_FLAVOUR_CPU:
- case DEVLINK_PORT_FLAVOUR_DSA:
- if (nla_put_u32(msg, DEVLINK_ATTR_PORT_NUMBER,
- attrs->phys.port_number))
- return -EMSGSIZE;
- if (!attrs->split)
- return 0;
- if (nla_put_u32(msg, DEVLINK_ATTR_PORT_SPLIT_GROUP,
- attrs->phys.port_number))
- return -EMSGSIZE;
- if (nla_put_u32(msg, DEVLINK_ATTR_PORT_SPLIT_SUBPORT_NUMBER,
- attrs->phys.split_subport_number))
- return -EMSGSIZE;
- break;
- default:
- break;
- }
- return 0;
-}
-
-static int devlink_port_fn_hw_addr_fill(const struct devlink_ops *ops,
- struct devlink_port *port,
- struct sk_buff *msg,
- struct netlink_ext_ack *extack,
- bool *msg_updated)
-{
- u8 hw_addr[MAX_ADDR_LEN];
- int hw_addr_len;
- int err;
-
- if (!ops->port_function_hw_addr_get)
- return 0;
-
- err = ops->port_function_hw_addr_get(port, hw_addr, &hw_addr_len,
- extack);
- if (err) {
- if (err == -EOPNOTSUPP)
- return 0;
- return err;
- }
- err = nla_put(msg, DEVLINK_PORT_FUNCTION_ATTR_HW_ADDR, hw_addr_len, hw_addr);
- if (err)
- return err;
- *msg_updated = true;
- return 0;
-}
-
-static int devlink_nl_rate_fill(struct sk_buff *msg,
- struct devlink_rate *devlink_rate,
- enum devlink_command cmd, u32 portid, u32 seq,
- int flags, struct netlink_ext_ack *extack)
-{
- struct devlink *devlink = devlink_rate->devlink;
- void *hdr;
-
- hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
- if (!hdr)
- return -EMSGSIZE;
-
- if (devlink_nl_put_handle(msg, devlink))
- goto nla_put_failure;
-
- if (nla_put_u16(msg, DEVLINK_ATTR_RATE_TYPE, devlink_rate->type))
- goto nla_put_failure;
-
- if (devlink_rate_is_leaf(devlink_rate)) {
- if (nla_put_u32(msg, DEVLINK_ATTR_PORT_INDEX,
- devlink_rate->devlink_port->index))
- goto nla_put_failure;
- } else if (devlink_rate_is_node(devlink_rate)) {
- if (nla_put_string(msg, DEVLINK_ATTR_RATE_NODE_NAME,
- devlink_rate->name))
- goto nla_put_failure;
- }
-
- if (nla_put_u64_64bit(msg, DEVLINK_ATTR_RATE_TX_SHARE,
- devlink_rate->tx_share, DEVLINK_ATTR_PAD))
- goto nla_put_failure;
-
- if (nla_put_u64_64bit(msg, DEVLINK_ATTR_RATE_TX_MAX,
- devlink_rate->tx_max, DEVLINK_ATTR_PAD))
- goto nla_put_failure;
-
- if (devlink_rate->parent)
- if (nla_put_string(msg, DEVLINK_ATTR_RATE_PARENT_NODE_NAME,
- devlink_rate->parent->name))
- goto nla_put_failure;
-
- genlmsg_end(msg, hdr);
- return 0;
-
-nla_put_failure:
- genlmsg_cancel(msg, hdr);
- return -EMSGSIZE;
-}
-
-static bool
-devlink_port_fn_state_valid(enum devlink_port_fn_state state)
-{
- return state == DEVLINK_PORT_FN_STATE_INACTIVE ||
- state == DEVLINK_PORT_FN_STATE_ACTIVE;
-}
-
-static bool
-devlink_port_fn_opstate_valid(enum devlink_port_fn_opstate opstate)
-{
- return opstate == DEVLINK_PORT_FN_OPSTATE_DETACHED ||
- opstate == DEVLINK_PORT_FN_OPSTATE_ATTACHED;
-}
-
-static int devlink_port_fn_state_fill(const struct devlink_ops *ops,
- struct devlink_port *port,
- struct sk_buff *msg,
- struct netlink_ext_ack *extack,
- bool *msg_updated)
-{
- enum devlink_port_fn_opstate opstate;
- enum devlink_port_fn_state state;
- int err;
-
- if (!ops->port_fn_state_get)
- return 0;
-
- err = ops->port_fn_state_get(port, &state, &opstate, extack);
- if (err) {
- if (err == -EOPNOTSUPP)
- return 0;
- return err;
- }
- if (!devlink_port_fn_state_valid(state)) {
- WARN_ON_ONCE(1);
- NL_SET_ERR_MSG_MOD(extack, "Invalid state read from driver");
- return -EINVAL;
- }
- if (!devlink_port_fn_opstate_valid(opstate)) {
- WARN_ON_ONCE(1);
- NL_SET_ERR_MSG_MOD(extack,
- "Invalid operational state read from driver");
- return -EINVAL;
- }
- if (nla_put_u8(msg, DEVLINK_PORT_FN_ATTR_STATE, state) ||
- nla_put_u8(msg, DEVLINK_PORT_FN_ATTR_OPSTATE, opstate))
- return -EMSGSIZE;
- *msg_updated = true;
- return 0;
-}
-
-static int
-devlink_nl_port_function_attrs_put(struct sk_buff *msg, struct devlink_port *port,
- struct netlink_ext_ack *extack)
-{
- const struct devlink_ops *ops;
- struct nlattr *function_attr;
- bool msg_updated = false;
- int err;
-
- function_attr = nla_nest_start_noflag(msg, DEVLINK_ATTR_PORT_FUNCTION);
- if (!function_attr)
- return -EMSGSIZE;
-
- ops = port->devlink->ops;
- err = devlink_port_fn_hw_addr_fill(ops, port, msg, extack,
- &msg_updated);
- if (err)
- goto out;
- err = devlink_port_fn_state_fill(ops, port, msg, extack, &msg_updated);
-out:
- if (err || !msg_updated)
- nla_nest_cancel(msg, function_attr);
- else
- nla_nest_end(msg, function_attr);
- return err;
-}
-
-static int devlink_nl_port_fill(struct sk_buff *msg,
- struct devlink_port *devlink_port,
- enum devlink_command cmd, u32 portid, u32 seq,
- int flags, struct netlink_ext_ack *extack)
-{
- struct devlink *devlink = devlink_port->devlink;
- void *hdr;
-
- hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
- if (!hdr)
- return -EMSGSIZE;
-
- if (devlink_nl_put_handle(msg, devlink))
- goto nla_put_failure;
- if (nla_put_u32(msg, DEVLINK_ATTR_PORT_INDEX, devlink_port->index))
- goto nla_put_failure;
-
- /* Hold rtnl lock while accessing port's netdev attributes. */
- rtnl_lock();
- spin_lock_bh(&devlink_port->type_lock);
- if (nla_put_u16(msg, DEVLINK_ATTR_PORT_TYPE, devlink_port->type))
- goto nla_put_failure_type_locked;
- if (devlink_port->desired_type != DEVLINK_PORT_TYPE_NOTSET &&
- nla_put_u16(msg, DEVLINK_ATTR_PORT_DESIRED_TYPE,
- devlink_port->desired_type))
- goto nla_put_failure_type_locked;
- if (devlink_port->type == DEVLINK_PORT_TYPE_ETH) {
- struct net *net = devlink_net(devlink_port->devlink);
- struct net_device *netdev = devlink_port->type_dev;
-
- if (netdev && net_eq(net, dev_net(netdev)) &&
- (nla_put_u32(msg, DEVLINK_ATTR_PORT_NETDEV_IFINDEX,
- netdev->ifindex) ||
- nla_put_string(msg, DEVLINK_ATTR_PORT_NETDEV_NAME,
- netdev->name)))
- goto nla_put_failure_type_locked;
- }
- if (devlink_port->type == DEVLINK_PORT_TYPE_IB) {
- struct ib_device *ibdev = devlink_port->type_dev;
-
- if (ibdev &&
- nla_put_string(msg, DEVLINK_ATTR_PORT_IBDEV_NAME,
- ibdev->name))
- goto nla_put_failure_type_locked;
- }
- spin_unlock_bh(&devlink_port->type_lock);
- rtnl_unlock();
- if (devlink_nl_port_attrs_put(msg, devlink_port))
- goto nla_put_failure;
- if (devlink_nl_port_function_attrs_put(msg, devlink_port, extack))
- goto nla_put_failure;
- if (devlink_port->linecard &&
- nla_put_u32(msg, DEVLINK_ATTR_LINECARD_INDEX,
- devlink_port->linecard->index))
- goto nla_put_failure;
-
- genlmsg_end(msg, hdr);
- return 0;
-
-nla_put_failure_type_locked:
- spin_unlock_bh(&devlink_port->type_lock);
- rtnl_unlock();
-nla_put_failure:
- genlmsg_cancel(msg, hdr);
- return -EMSGSIZE;
-}
-
-static void devlink_port_notify(struct devlink_port *devlink_port,
- enum devlink_command cmd)
-{
- struct devlink *devlink = devlink_port->devlink;
- struct sk_buff *msg;
- int err;
-
- WARN_ON(cmd != DEVLINK_CMD_PORT_NEW && cmd != DEVLINK_CMD_PORT_DEL);
-
- if (!xa_get_mark(&devlinks, devlink->index, DEVLINK_REGISTERED))
- return;
-
- msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
- if (!msg)
- return;
-
- err = devlink_nl_port_fill(msg, devlink_port, cmd, 0, 0, 0, NULL);
- if (err) {
- nlmsg_free(msg);
- return;
- }
-
- genlmsg_multicast_netns(&devlink_nl_family, devlink_net(devlink), msg,
- 0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL);
-}
-
-static void devlink_rate_notify(struct devlink_rate *devlink_rate,
- enum devlink_command cmd)
-{
- struct devlink *devlink = devlink_rate->devlink;
- struct sk_buff *msg;
- int err;
-
- WARN_ON(cmd != DEVLINK_CMD_RATE_NEW && cmd != DEVLINK_CMD_RATE_DEL);
-
- if (!xa_get_mark(&devlinks, devlink->index, DEVLINK_REGISTERED))
- return;
-
- msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
- if (!msg)
- return;
-
- err = devlink_nl_rate_fill(msg, devlink_rate, cmd, 0, 0, 0, NULL);
- if (err) {
- nlmsg_free(msg);
- return;
- }
-
- genlmsg_multicast_netns(&devlink_nl_family, devlink_net(devlink), msg,
- 0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL);
-}
-
-static int devlink_nl_cmd_rate_get_dumpit(struct sk_buff *msg,
- struct netlink_callback *cb)
-{
- struct devlink_rate *devlink_rate;
- struct devlink *devlink;
- int start = cb->args[0];
- unsigned long index;
- int idx = 0;
- int err = 0;
-
- devlinks_xa_for_each_registered_get(sock_net(msg->sk), index, devlink) {
- devl_lock(devlink);
- list_for_each_entry(devlink_rate, &devlink->rate_list, list) {
- enum devlink_command cmd = DEVLINK_CMD_RATE_NEW;
- u32 id = NETLINK_CB(cb->skb).portid;
-
- if (idx < start) {
- idx++;
- continue;
- }
- err = devlink_nl_rate_fill(msg, devlink_rate, cmd, id,
- cb->nlh->nlmsg_seq,
- NLM_F_MULTI, NULL);
- if (err) {
- devl_unlock(devlink);
- devlink_put(devlink);
- goto out;
- }
- idx++;
- }
- devl_unlock(devlink);
- devlink_put(devlink);
- }
-out:
- if (err != -EMSGSIZE)
- return err;
-
- cb->args[0] = idx;
- return msg->len;
-}
-
-static int devlink_nl_cmd_rate_get_doit(struct sk_buff *skb,
- struct genl_info *info)
-{
- struct devlink_rate *devlink_rate = info->user_ptr[1];
- struct sk_buff *msg;
- int err;
-
- msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
- if (!msg)
- return -ENOMEM;
-
- err = devlink_nl_rate_fill(msg, devlink_rate, DEVLINK_CMD_RATE_NEW,
- info->snd_portid, info->snd_seq, 0,
- info->extack);
- if (err) {
- nlmsg_free(msg);
- return err;
- }
-
- return genlmsg_reply(msg, info);
-}
-
-static bool
-devlink_rate_is_parent_node(struct devlink_rate *devlink_rate,
- struct devlink_rate *parent)
-{
- while (parent) {
- if (parent == devlink_rate)
- return true;
- parent = parent->parent;
- }
- return false;
-}
-
-static int devlink_nl_cmd_get_doit(struct sk_buff *skb, struct genl_info *info)
-{
- struct devlink *devlink = info->user_ptr[0];
- struct sk_buff *msg;
- int err;
-
- msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
- if (!msg)
- return -ENOMEM;
-
- err = devlink_nl_fill(msg, devlink, DEVLINK_CMD_NEW,
- info->snd_portid, info->snd_seq, 0);
- if (err) {
- nlmsg_free(msg);
- return err;
- }
-
- return genlmsg_reply(msg, info);
-}
-
-static int devlink_nl_cmd_get_dumpit(struct sk_buff *msg,
- struct netlink_callback *cb)
-{
- struct devlink *devlink;
- int start = cb->args[0];
- unsigned long index;
- int idx = 0;
- int err;
-
- devlinks_xa_for_each_registered_get(sock_net(msg->sk), index, devlink) {
- if (idx < start) {
- idx++;
- devlink_put(devlink);
- continue;
- }
-
- devl_lock(devlink);
- err = devlink_nl_fill(msg, devlink, DEVLINK_CMD_NEW,
- NETLINK_CB(cb->skb).portid,
- cb->nlh->nlmsg_seq, NLM_F_MULTI);
- devl_unlock(devlink);
- devlink_put(devlink);
-
- if (err)
- goto out;
- idx++;
- }
-out:
- cb->args[0] = idx;
- return msg->len;
-}
-
-static int devlink_nl_cmd_port_get_doit(struct sk_buff *skb,
- struct genl_info *info)
-{
- struct devlink_port *devlink_port = info->user_ptr[1];
- struct sk_buff *msg;
- int err;
-
- msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
- if (!msg)
- return -ENOMEM;
-
- err = devlink_nl_port_fill(msg, devlink_port, DEVLINK_CMD_PORT_NEW,
- info->snd_portid, info->snd_seq, 0,
- info->extack);
- if (err) {
- nlmsg_free(msg);
- return err;
- }
-
- return genlmsg_reply(msg, info);
-}
-
-static int devlink_nl_cmd_port_get_dumpit(struct sk_buff *msg,
- struct netlink_callback *cb)
-{
- struct devlink *devlink;
- struct devlink_port *devlink_port;
- int start = cb->args[0];
- unsigned long index;
- int idx = 0;
- int err;
-
- devlinks_xa_for_each_registered_get(sock_net(msg->sk), index, devlink) {
- devl_lock(devlink);
- list_for_each_entry(devlink_port, &devlink->port_list, list) {
- if (idx < start) {
- idx++;
- continue;
- }
- err = devlink_nl_port_fill(msg, devlink_port,
- DEVLINK_CMD_NEW,
- NETLINK_CB(cb->skb).portid,
- cb->nlh->nlmsg_seq,
- NLM_F_MULTI, cb->extack);
- if (err) {
- devl_unlock(devlink);
- devlink_put(devlink);
- goto out;
- }
- idx++;
- }
- devl_unlock(devlink);
- devlink_put(devlink);
- }
-out:
- cb->args[0] = idx;
- return msg->len;
-}
-
-static int devlink_port_type_set(struct devlink_port *devlink_port,
- enum devlink_port_type port_type)
-
-{
- int err;
-
- if (!devlink_port->devlink->ops->port_type_set)
- return -EOPNOTSUPP;
-
- if (port_type == devlink_port->type)
- return 0;
-
- err = devlink_port->devlink->ops->port_type_set(devlink_port,
- port_type);
- if (err)
- return err;
-
- devlink_port->desired_type = port_type;
- devlink_port_notify(devlink_port, DEVLINK_CMD_PORT_NEW);
- return 0;
-}
-
-static int devlink_port_function_hw_addr_set(struct devlink_port *port,
- const struct nlattr *attr,
- struct netlink_ext_ack *extack)
-{
- const struct devlink_ops *ops = port->devlink->ops;
- const u8 *hw_addr;
- int hw_addr_len;
-
- hw_addr = nla_data(attr);
- hw_addr_len = nla_len(attr);
- if (hw_addr_len > MAX_ADDR_LEN) {
- NL_SET_ERR_MSG_MOD(extack, "Port function hardware address too long");
- return -EINVAL;
- }
- if (port->type == DEVLINK_PORT_TYPE_ETH) {
- if (hw_addr_len != ETH_ALEN) {
- NL_SET_ERR_MSG_MOD(extack, "Address must be 6 bytes for Ethernet device");
- return -EINVAL;
- }
- if (!is_unicast_ether_addr(hw_addr)) {
- NL_SET_ERR_MSG_MOD(extack, "Non-unicast hardware address unsupported");
- return -EINVAL;
- }
- }
-
- if (!ops->port_function_hw_addr_set) {
- NL_SET_ERR_MSG_MOD(extack, "Port doesn't support function attributes");
- return -EOPNOTSUPP;
- }
-
- return ops->port_function_hw_addr_set(port, hw_addr, hw_addr_len,
- extack);
-}
-
-static int devlink_port_fn_state_set(struct devlink_port *port,
- const struct nlattr *attr,
- struct netlink_ext_ack *extack)
-{
- enum devlink_port_fn_state state;
- const struct devlink_ops *ops;
-
- state = nla_get_u8(attr);
- ops = port->devlink->ops;
- if (!ops->port_fn_state_set) {
- NL_SET_ERR_MSG_MOD(extack,
- "Function does not support state setting");
- return -EOPNOTSUPP;
- }
- return ops->port_fn_state_set(port, state, extack);
-}
-
-static int devlink_port_function_set(struct devlink_port *port,
- const struct nlattr *attr,
- struct netlink_ext_ack *extack)
-{
- struct nlattr *tb[DEVLINK_PORT_FUNCTION_ATTR_MAX + 1];
- int err;
-
- err = nla_parse_nested(tb, DEVLINK_PORT_FUNCTION_ATTR_MAX, attr,
- devlink_function_nl_policy, extack);
- if (err < 0) {
- NL_SET_ERR_MSG_MOD(extack, "Fail to parse port function attributes");
- return err;
- }
-
- attr = tb[DEVLINK_PORT_FUNCTION_ATTR_HW_ADDR];
- if (attr) {
- err = devlink_port_function_hw_addr_set(port, attr, extack);
- if (err)
- return err;
- }
- /* Keep this as the last function attribute set, so that when
- * multiple port function attributes are set along with state,
- * Those can be applied first before activating the state.
- */
- attr = tb[DEVLINK_PORT_FN_ATTR_STATE];
- if (attr)
- err = devlink_port_fn_state_set(port, attr, extack);
-
- if (!err)
- devlink_port_notify(port, DEVLINK_CMD_PORT_NEW);
- return err;
-}
-
-static int devlink_nl_cmd_port_set_doit(struct sk_buff *skb,
- struct genl_info *info)
-{
- struct devlink_port *devlink_port = info->user_ptr[1];
- int err;
-
- if (info->attrs[DEVLINK_ATTR_PORT_TYPE]) {
- enum devlink_port_type port_type;
-
- port_type = nla_get_u16(info->attrs[DEVLINK_ATTR_PORT_TYPE]);
- err = devlink_port_type_set(devlink_port, port_type);
- if (err)
- return err;
- }
-
- if (info->attrs[DEVLINK_ATTR_PORT_FUNCTION]) {
- struct nlattr *attr = info->attrs[DEVLINK_ATTR_PORT_FUNCTION];
- struct netlink_ext_ack *extack = info->extack;
-
- err = devlink_port_function_set(devlink_port, attr, extack);
- if (err)
- return err;
- }
-
- return 0;
-}
-
-static int devlink_nl_cmd_port_split_doit(struct sk_buff *skb,
- struct genl_info *info)
-{
- struct devlink_port *devlink_port = info->user_ptr[1];
- struct devlink *devlink = info->user_ptr[0];
- u32 count;
-
- if (GENL_REQ_ATTR_CHECK(info, DEVLINK_ATTR_PORT_SPLIT_COUNT))
- return -EINVAL;
- if (!devlink->ops->port_split)
- return -EOPNOTSUPP;
-
- count = nla_get_u32(info->attrs[DEVLINK_ATTR_PORT_SPLIT_COUNT]);
-
- if (!devlink_port->attrs.splittable) {
- /* Split ports cannot be split. */
- if (devlink_port->attrs.split)
- NL_SET_ERR_MSG_MOD(info->extack, "Port cannot be split further");
- else
- NL_SET_ERR_MSG_MOD(info->extack, "Port cannot be split");
- return -EINVAL;
- }
-
- if (count < 2 || !is_power_of_2(count) || count > devlink_port->attrs.lanes) {
- NL_SET_ERR_MSG_MOD(info->extack, "Invalid split count");
- return -EINVAL;
- }
-
- return devlink->ops->port_split(devlink, devlink_port, count,
- info->extack);
-}
-
-static int devlink_nl_cmd_port_unsplit_doit(struct sk_buff *skb,
- struct genl_info *info)
-{
- struct devlink_port *devlink_port = info->user_ptr[1];
- struct devlink *devlink = info->user_ptr[0];
-
- if (!devlink->ops->port_unsplit)
- return -EOPNOTSUPP;
- return devlink->ops->port_unsplit(devlink, devlink_port, info->extack);
-}
-
-static int devlink_port_new_notify(struct devlink *devlink,
- unsigned int port_index,
- struct genl_info *info)
-{
- struct devlink_port *devlink_port;
- struct sk_buff *msg;
- int err;
-
- msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
- if (!msg)
- return -ENOMEM;
-
- lockdep_assert_held(&devlink->lock);
- devlink_port = devlink_port_get_by_index(devlink, port_index);
- if (!devlink_port) {
- err = -ENODEV;
- goto out;
- }
-
- err = devlink_nl_port_fill(msg, devlink_port, DEVLINK_CMD_NEW,
- info->snd_portid, info->snd_seq, 0, NULL);
- if (err)
- goto out;
-
- return genlmsg_reply(msg, info);
-
-out:
- nlmsg_free(msg);
- return err;
-}
-
-static int devlink_nl_cmd_port_new_doit(struct sk_buff *skb,
- struct genl_info *info)
-{
- struct netlink_ext_ack *extack = info->extack;
- struct devlink_port_new_attrs new_attrs = {};
- struct devlink *devlink = info->user_ptr[0];
- unsigned int new_port_index;
- int err;
-
- if (!devlink->ops->port_new || !devlink->ops->port_del)
- return -EOPNOTSUPP;
-
- if (!info->attrs[DEVLINK_ATTR_PORT_FLAVOUR] ||
- !info->attrs[DEVLINK_ATTR_PORT_PCI_PF_NUMBER]) {
- NL_SET_ERR_MSG_MOD(extack, "Port flavour or PCI PF are not specified");
- return -EINVAL;
- }
- new_attrs.flavour = nla_get_u16(info->attrs[DEVLINK_ATTR_PORT_FLAVOUR]);
- new_attrs.pfnum =
- nla_get_u16(info->attrs[DEVLINK_ATTR_PORT_PCI_PF_NUMBER]);
-
- if (info->attrs[DEVLINK_ATTR_PORT_INDEX]) {
- /* Port index of the new port being created by driver. */
- new_attrs.port_index =
- nla_get_u32(info->attrs[DEVLINK_ATTR_PORT_INDEX]);
- new_attrs.port_index_valid = true;
- }
- if (info->attrs[DEVLINK_ATTR_PORT_CONTROLLER_NUMBER]) {
- new_attrs.controller =
- nla_get_u16(info->attrs[DEVLINK_ATTR_PORT_CONTROLLER_NUMBER]);
- new_attrs.controller_valid = true;
- }
- if (new_attrs.flavour == DEVLINK_PORT_FLAVOUR_PCI_SF &&
- info->attrs[DEVLINK_ATTR_PORT_PCI_SF_NUMBER]) {
- new_attrs.sfnum = nla_get_u32(info->attrs[DEVLINK_ATTR_PORT_PCI_SF_NUMBER]);
- new_attrs.sfnum_valid = true;
- }
-
- err = devlink->ops->port_new(devlink, &new_attrs, extack,
- &new_port_index);
- if (err)
- return err;
-
- err = devlink_port_new_notify(devlink, new_port_index, info);
- if (err && err != -ENODEV) {
- /* Fail to send the response; destroy newly created port. */
- devlink->ops->port_del(devlink, new_port_index, extack);
- }
- return err;
-}
-
-static int devlink_nl_cmd_port_del_doit(struct sk_buff *skb,
- struct genl_info *info)
-{
- struct netlink_ext_ack *extack = info->extack;
- struct devlink *devlink = info->user_ptr[0];
- unsigned int port_index;
-
- if (!devlink->ops->port_del)
- return -EOPNOTSUPP;
-
- if (GENL_REQ_ATTR_CHECK(info, DEVLINK_ATTR_PORT_INDEX)) {
- NL_SET_ERR_MSG_MOD(extack, "Port index is not specified");
- return -EINVAL;
- }
- port_index = nla_get_u32(info->attrs[DEVLINK_ATTR_PORT_INDEX]);
-
- return devlink->ops->port_del(devlink, port_index, extack);
-}
-
-static int
-devlink_nl_rate_parent_node_set(struct devlink_rate *devlink_rate,
- struct genl_info *info,
- struct nlattr *nla_parent)
-{
- struct devlink *devlink = devlink_rate->devlink;
- const char *parent_name = nla_data(nla_parent);
- const struct devlink_ops *ops = devlink->ops;
- size_t len = strlen(parent_name);
- struct devlink_rate *parent;
- int err = -EOPNOTSUPP;
-
- parent = devlink_rate->parent;
- if (parent && len) {
- NL_SET_ERR_MSG_MOD(info->extack, "Rate object already has parent.");
- return -EBUSY;
- } else if (parent && !len) {
- if (devlink_rate_is_leaf(devlink_rate))
- err = ops->rate_leaf_parent_set(devlink_rate, NULL,
- devlink_rate->priv, NULL,
- info->extack);
- else if (devlink_rate_is_node(devlink_rate))
- err = ops->rate_node_parent_set(devlink_rate, NULL,
- devlink_rate->priv, NULL,
- info->extack);
- if (err)
- return err;
-
- refcount_dec(&parent->refcnt);
- devlink_rate->parent = NULL;
- } else if (!parent && len) {
- parent = devlink_rate_node_get_by_name(devlink, parent_name);
- if (IS_ERR(parent))
- return -ENODEV;
-
- if (parent == devlink_rate) {
- NL_SET_ERR_MSG_MOD(info->extack, "Parent to self is not allowed");
- return -EINVAL;
- }
-
- if (devlink_rate_is_node(devlink_rate) &&
- devlink_rate_is_parent_node(devlink_rate, parent->parent)) {
- NL_SET_ERR_MSG_MOD(info->extack, "Node is already a parent of parent node.");
- return -EEXIST;
- }
-
- if (devlink_rate_is_leaf(devlink_rate))
- err = ops->rate_leaf_parent_set(devlink_rate, parent,
- devlink_rate->priv, parent->priv,
- info->extack);
- else if (devlink_rate_is_node(devlink_rate))
- err = ops->rate_node_parent_set(devlink_rate, parent,
- devlink_rate->priv, parent->priv,
- info->extack);
- if (err)
- return err;
-
- refcount_inc(&parent->refcnt);
- devlink_rate->parent = parent;
- }
-
- return 0;
-}
-
-static int devlink_nl_rate_set(struct devlink_rate *devlink_rate,
- const struct devlink_ops *ops,
- struct genl_info *info)
-{
- struct nlattr *nla_parent, **attrs = info->attrs;
- int err = -EOPNOTSUPP;
- u64 rate;
-
- if (attrs[DEVLINK_ATTR_RATE_TX_SHARE]) {
- rate = nla_get_u64(attrs[DEVLINK_ATTR_RATE_TX_SHARE]);
- if (devlink_rate_is_leaf(devlink_rate))
- err = ops->rate_leaf_tx_share_set(devlink_rate, devlink_rate->priv,
- rate, info->extack);
- else if (devlink_rate_is_node(devlink_rate))
- err = ops->rate_node_tx_share_set(devlink_rate, devlink_rate->priv,
- rate, info->extack);
- if (err)
- return err;
- devlink_rate->tx_share = rate;
- }
-
- if (attrs[DEVLINK_ATTR_RATE_TX_MAX]) {
- rate = nla_get_u64(attrs[DEVLINK_ATTR_RATE_TX_MAX]);
- if (devlink_rate_is_leaf(devlink_rate))
- err = ops->rate_leaf_tx_max_set(devlink_rate, devlink_rate->priv,
- rate, info->extack);
- else if (devlink_rate_is_node(devlink_rate))
- err = ops->rate_node_tx_max_set(devlink_rate, devlink_rate->priv,
- rate, info->extack);
- if (err)
- return err;
- devlink_rate->tx_max = rate;
- }
-
- nla_parent = attrs[DEVLINK_ATTR_RATE_PARENT_NODE_NAME];
- if (nla_parent) {
- err = devlink_nl_rate_parent_node_set(devlink_rate, info,
- nla_parent);
- if (err)
- return err;
- }
-
- return 0;
-}
-
-static bool devlink_rate_set_ops_supported(const struct devlink_ops *ops,
- struct genl_info *info,
- enum devlink_rate_type type)
-{
- struct nlattr **attrs = info->attrs;
-
- if (type == DEVLINK_RATE_TYPE_LEAF) {
- if (attrs[DEVLINK_ATTR_RATE_TX_SHARE] && !ops->rate_leaf_tx_share_set) {
- NL_SET_ERR_MSG_MOD(info->extack, "TX share set isn't supported for the leafs");
- return false;
- }
- if (attrs[DEVLINK_ATTR_RATE_TX_MAX] && !ops->rate_leaf_tx_max_set) {
- NL_SET_ERR_MSG_MOD(info->extack, "TX max set isn't supported for the leafs");
- return false;
- }
- if (attrs[DEVLINK_ATTR_RATE_PARENT_NODE_NAME] &&
- !ops->rate_leaf_parent_set) {
- NL_SET_ERR_MSG_MOD(info->extack, "Parent set isn't supported for the leafs");
- return false;
- }
- } else if (type == DEVLINK_RATE_TYPE_NODE) {
- if (attrs[DEVLINK_ATTR_RATE_TX_SHARE] && !ops->rate_node_tx_share_set) {
- NL_SET_ERR_MSG_MOD(info->extack, "TX share set isn't supported for the nodes");
- return false;
- }
- if (attrs[DEVLINK_ATTR_RATE_TX_MAX] && !ops->rate_node_tx_max_set) {
- NL_SET_ERR_MSG_MOD(info->extack, "TX max set isn't supported for the nodes");
- return false;
- }
- if (attrs[DEVLINK_ATTR_RATE_PARENT_NODE_NAME] &&
- !ops->rate_node_parent_set) {
- NL_SET_ERR_MSG_MOD(info->extack, "Parent set isn't supported for the nodes");
- return false;
- }
- } else {
- WARN(1, "Unknown type of rate object");
- return false;
- }
-
- return true;
-}
-
-static int devlink_nl_cmd_rate_set_doit(struct sk_buff *skb,
- struct genl_info *info)
-{
- struct devlink_rate *devlink_rate = info->user_ptr[1];
- struct devlink *devlink = devlink_rate->devlink;
- const struct devlink_ops *ops = devlink->ops;
- int err;
-
- if (!ops || !devlink_rate_set_ops_supported(ops, info, devlink_rate->type))
- return -EOPNOTSUPP;
-
- err = devlink_nl_rate_set(devlink_rate, ops, info);
-
- if (!err)
- devlink_rate_notify(devlink_rate, DEVLINK_CMD_RATE_NEW);
- return err;
-}
-
-static int devlink_nl_cmd_rate_new_doit(struct sk_buff *skb,
- struct genl_info *info)
-{
- struct devlink *devlink = info->user_ptr[0];
- struct devlink_rate *rate_node;
- const struct devlink_ops *ops;
- int err;
-
- ops = devlink->ops;
- if (!ops || !ops->rate_node_new || !ops->rate_node_del) {
- NL_SET_ERR_MSG_MOD(info->extack, "Rate nodes aren't supported");
- return -EOPNOTSUPP;
- }
-
- if (!devlink_rate_set_ops_supported(ops, info, DEVLINK_RATE_TYPE_NODE))
- return -EOPNOTSUPP;
-
- rate_node = devlink_rate_node_get_from_attrs(devlink, info->attrs);
- if (!IS_ERR(rate_node))
- return -EEXIST;
- else if (rate_node == ERR_PTR(-EINVAL))
- return -EINVAL;
-
- rate_node = kzalloc(sizeof(*rate_node), GFP_KERNEL);
- if (!rate_node)
- return -ENOMEM;
-
- rate_node->devlink = devlink;
- rate_node->type = DEVLINK_RATE_TYPE_NODE;
- rate_node->name = nla_strdup(info->attrs[DEVLINK_ATTR_RATE_NODE_NAME], GFP_KERNEL);
- if (!rate_node->name) {
- err = -ENOMEM;
- goto err_strdup;
- }
-
- err = ops->rate_node_new(rate_node, &rate_node->priv, info->extack);
- if (err)
- goto err_node_new;
-
- err = devlink_nl_rate_set(rate_node, ops, info);
- if (err)
- goto err_rate_set;
-
- refcount_set(&rate_node->refcnt, 1);
- list_add(&rate_node->list, &devlink->rate_list);
- devlink_rate_notify(rate_node, DEVLINK_CMD_RATE_NEW);
- return 0;
-
-err_rate_set:
- ops->rate_node_del(rate_node, rate_node->priv, info->extack);
-err_node_new:
- kfree(rate_node->name);
-err_strdup:
- kfree(rate_node);
- return err;
-}
-
-static int devlink_nl_cmd_rate_del_doit(struct sk_buff *skb,
- struct genl_info *info)
-{
- struct devlink_rate *rate_node = info->user_ptr[1];
- struct devlink *devlink = rate_node->devlink;
- const struct devlink_ops *ops = devlink->ops;
- int err;
-
- if (refcount_read(&rate_node->refcnt) > 1) {
- NL_SET_ERR_MSG_MOD(info->extack, "Node has children. Cannot delete node.");
- return -EBUSY;
- }
-
- devlink_rate_notify(rate_node, DEVLINK_CMD_RATE_DEL);
- err = ops->rate_node_del(rate_node, rate_node->priv, info->extack);
- if (rate_node->parent)
- refcount_dec(&rate_node->parent->refcnt);
- list_del(&rate_node->list);
- kfree(rate_node->name);
- kfree(rate_node);
- return err;
-}
-
-struct devlink_linecard_type {
- const char *type;
- const void *priv;
-};
-
-static int devlink_nl_linecard_fill(struct sk_buff *msg,
- struct devlink *devlink,
- struct devlink_linecard *linecard,
- enum devlink_command cmd, u32 portid,
- u32 seq, int flags,
- struct netlink_ext_ack *extack)
-{
- struct devlink_linecard_type *linecard_type;
- struct nlattr *attr;
- void *hdr;
- int i;
-
- hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
- if (!hdr)
- return -EMSGSIZE;
-
- if (devlink_nl_put_handle(msg, devlink))
- goto nla_put_failure;
- if (nla_put_u32(msg, DEVLINK_ATTR_LINECARD_INDEX, linecard->index))
- goto nla_put_failure;
- if (nla_put_u8(msg, DEVLINK_ATTR_LINECARD_STATE, linecard->state))
- goto nla_put_failure;
- if (linecard->type &&
- nla_put_string(msg, DEVLINK_ATTR_LINECARD_TYPE, linecard->type))
- goto nla_put_failure;
-
- if (linecard->types_count) {
- attr = nla_nest_start(msg,
- DEVLINK_ATTR_LINECARD_SUPPORTED_TYPES);
- if (!attr)
- goto nla_put_failure;
- for (i = 0; i < linecard->types_count; i++) {
- linecard_type = &linecard->types[i];
- if (nla_put_string(msg, DEVLINK_ATTR_LINECARD_TYPE,
- linecard_type->type)) {
- nla_nest_cancel(msg, attr);
- goto nla_put_failure;
- }
- }
- nla_nest_end(msg, attr);
- }
-
- if (linecard->nested_devlink &&
- devlink_nl_put_nested_handle(msg, linecard->nested_devlink))
- goto nla_put_failure;
-
- genlmsg_end(msg, hdr);
- return 0;
-
-nla_put_failure:
- genlmsg_cancel(msg, hdr);
- return -EMSGSIZE;
-}
-
-static void devlink_linecard_notify(struct devlink_linecard *linecard,
- enum devlink_command cmd)
-{
- struct devlink *devlink = linecard->devlink;
- struct sk_buff *msg;
- int err;
-
- WARN_ON(cmd != DEVLINK_CMD_LINECARD_NEW &&
- cmd != DEVLINK_CMD_LINECARD_DEL);
-
- if (!xa_get_mark(&devlinks, devlink->index, DEVLINK_REGISTERED))
- return;
-
- msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
- if (!msg)
- return;
-
- err = devlink_nl_linecard_fill(msg, devlink, linecard, cmd, 0, 0, 0,
- NULL);
- if (err) {
- nlmsg_free(msg);
- return;
- }
-
- genlmsg_multicast_netns(&devlink_nl_family, devlink_net(devlink),
- msg, 0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL);
-}
-
-static int devlink_nl_cmd_linecard_get_doit(struct sk_buff *skb,
- struct genl_info *info)
-{
- struct devlink_linecard *linecard = info->user_ptr[1];
- struct devlink *devlink = linecard->devlink;
- struct sk_buff *msg;
- int err;
-
- msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
- if (!msg)
- return -ENOMEM;
-
- mutex_lock(&linecard->state_lock);
- err = devlink_nl_linecard_fill(msg, devlink, linecard,
- DEVLINK_CMD_LINECARD_NEW,
- info->snd_portid, info->snd_seq, 0,
- info->extack);
- mutex_unlock(&linecard->state_lock);
- if (err) {
- nlmsg_free(msg);
- return err;
- }
-
- return genlmsg_reply(msg, info);
-}
-
-static int devlink_nl_cmd_linecard_get_dumpit(struct sk_buff *msg,
- struct netlink_callback *cb)
-{
- struct devlink_linecard *linecard;
- struct devlink *devlink;
- int start = cb->args[0];
- unsigned long index;
- int idx = 0;
- int err;
-
- devlinks_xa_for_each_registered_get(sock_net(msg->sk), index, devlink) {
- mutex_lock(&devlink->linecards_lock);
- list_for_each_entry(linecard, &devlink->linecard_list, list) {
- if (idx < start) {
- idx++;
- continue;
- }
- mutex_lock(&linecard->state_lock);
- err = devlink_nl_linecard_fill(msg, devlink, linecard,
- DEVLINK_CMD_LINECARD_NEW,
- NETLINK_CB(cb->skb).portid,
- cb->nlh->nlmsg_seq,
- NLM_F_MULTI,
- cb->extack);
- mutex_unlock(&linecard->state_lock);
- if (err) {
- mutex_unlock(&devlink->linecards_lock);
- devlink_put(devlink);
- goto out;
- }
- idx++;
- }
- mutex_unlock(&devlink->linecards_lock);
- devlink_put(devlink);
- }
-out:
- cb->args[0] = idx;
- return msg->len;
-}
-
-static struct devlink_linecard_type *
-devlink_linecard_type_lookup(struct devlink_linecard *linecard,
- const char *type)
-{
- struct devlink_linecard_type *linecard_type;
- int i;
-
- for (i = 0; i < linecard->types_count; i++) {
- linecard_type = &linecard->types[i];
- if (!strcmp(type, linecard_type->type))
- return linecard_type;
- }
- return NULL;
-}
-
-static int devlink_linecard_type_set(struct devlink_linecard *linecard,
- const char *type,
- struct netlink_ext_ack *extack)
-{
- const struct devlink_linecard_ops *ops = linecard->ops;
- struct devlink_linecard_type *linecard_type;
- int err;
-
- mutex_lock(&linecard->state_lock);
- if (linecard->state == DEVLINK_LINECARD_STATE_PROVISIONING) {
- NL_SET_ERR_MSG_MOD(extack, "Line card is currently being provisioned");
- err = -EBUSY;
- goto out;
- }
- if (linecard->state == DEVLINK_LINECARD_STATE_UNPROVISIONING) {
- NL_SET_ERR_MSG_MOD(extack, "Line card is currently being unprovisioned");
- err = -EBUSY;
- goto out;
- }
-
- linecard_type = devlink_linecard_type_lookup(linecard, type);
- if (!linecard_type) {
- NL_SET_ERR_MSG_MOD(extack, "Unsupported line card type provided");
- err = -EINVAL;
- goto out;
- }
-
- if (linecard->state != DEVLINK_LINECARD_STATE_UNPROVISIONED &&
- linecard->state != DEVLINK_LINECARD_STATE_PROVISIONING_FAILED) {
- NL_SET_ERR_MSG_MOD(extack, "Line card already provisioned");
- err = -EBUSY;
- /* Check if the line card is provisioned in the same
- * way the user asks. In case it is, make the operation
- * to return success.
- */
- if (ops->same_provision &&
- ops->same_provision(linecard, linecard->priv,
- linecard_type->type,
- linecard_type->priv))
- err = 0;
- goto out;
- }
-
- linecard->state = DEVLINK_LINECARD_STATE_PROVISIONING;
- linecard->type = linecard_type->type;
- devlink_linecard_notify(linecard, DEVLINK_CMD_LINECARD_NEW);
- mutex_unlock(&linecard->state_lock);
- err = ops->provision(linecard, linecard->priv, linecard_type->type,
- linecard_type->priv, extack);
- if (err) {
- /* Provisioning failed. Assume the linecard is unprovisioned
- * for future operations.
- */
- mutex_lock(&linecard->state_lock);
- linecard->state = DEVLINK_LINECARD_STATE_UNPROVISIONED;
- linecard->type = NULL;
- devlink_linecard_notify(linecard, DEVLINK_CMD_LINECARD_NEW);
- mutex_unlock(&linecard->state_lock);
- }
- return err;
-
-out:
- mutex_unlock(&linecard->state_lock);
- return err;
-}
-
-static int devlink_linecard_type_unset(struct devlink_linecard *linecard,
- struct netlink_ext_ack *extack)
-{
- int err;
-
- mutex_lock(&linecard->state_lock);
- if (linecard->state == DEVLINK_LINECARD_STATE_PROVISIONING) {
- NL_SET_ERR_MSG_MOD(extack, "Line card is currently being provisioned");
- err = -EBUSY;
- goto out;
- }
- if (linecard->state == DEVLINK_LINECARD_STATE_UNPROVISIONING) {
- NL_SET_ERR_MSG_MOD(extack, "Line card is currently being unprovisioned");
- err = -EBUSY;
- goto out;
- }
- if (linecard->state == DEVLINK_LINECARD_STATE_PROVISIONING_FAILED) {
- linecard->state = DEVLINK_LINECARD_STATE_UNPROVISIONED;
- linecard->type = NULL;
- devlink_linecard_notify(linecard, DEVLINK_CMD_LINECARD_NEW);
- err = 0;
- goto out;
- }
-
- if (linecard->state == DEVLINK_LINECARD_STATE_UNPROVISIONED) {
- NL_SET_ERR_MSG_MOD(extack, "Line card is not provisioned");
- err = 0;
- goto out;
- }
- linecard->state = DEVLINK_LINECARD_STATE_UNPROVISIONING;
- devlink_linecard_notify(linecard, DEVLINK_CMD_LINECARD_NEW);
- mutex_unlock(&linecard->state_lock);
- err = linecard->ops->unprovision(linecard, linecard->priv,
- extack);
- if (err) {
- /* Unprovisioning failed. Assume the linecard is unprovisioned
- * for future operations.
- */
- mutex_lock(&linecard->state_lock);
- linecard->state = DEVLINK_LINECARD_STATE_UNPROVISIONED;
- linecard->type = NULL;
- devlink_linecard_notify(linecard, DEVLINK_CMD_LINECARD_NEW);
- mutex_unlock(&linecard->state_lock);
- }
- return err;
-
-out:
- mutex_unlock(&linecard->state_lock);
- return err;
-}
-
-static int devlink_nl_cmd_linecard_set_doit(struct sk_buff *skb,
- struct genl_info *info)
-{
- struct devlink_linecard *linecard = info->user_ptr[1];
- struct netlink_ext_ack *extack = info->extack;
- int err;
-
- if (info->attrs[DEVLINK_ATTR_LINECARD_TYPE]) {
- const char *type;
-
- type = nla_data(info->attrs[DEVLINK_ATTR_LINECARD_TYPE]);
- if (strcmp(type, "")) {
- err = devlink_linecard_type_set(linecard, type, extack);
- if (err)
- return err;
- } else {
- err = devlink_linecard_type_unset(linecard, extack);
- if (err)
- return err;
- }
- }
-
- return 0;
-}
-
-static int devlink_nl_sb_fill(struct sk_buff *msg, struct devlink *devlink,
- struct devlink_sb *devlink_sb,
- enum devlink_command cmd, u32 portid,
- u32 seq, int flags)
-{
- void *hdr;
-
- hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
- if (!hdr)
- return -EMSGSIZE;
-
- if (devlink_nl_put_handle(msg, devlink))
- goto nla_put_failure;
- if (nla_put_u32(msg, DEVLINK_ATTR_SB_INDEX, devlink_sb->index))
- goto nla_put_failure;
- if (nla_put_u32(msg, DEVLINK_ATTR_SB_SIZE, devlink_sb->size))
- goto nla_put_failure;
- if (nla_put_u16(msg, DEVLINK_ATTR_SB_INGRESS_POOL_COUNT,
- devlink_sb->ingress_pools_count))
- goto nla_put_failure;
- if (nla_put_u16(msg, DEVLINK_ATTR_SB_EGRESS_POOL_COUNT,
- devlink_sb->egress_pools_count))
- goto nla_put_failure;
- if (nla_put_u16(msg, DEVLINK_ATTR_SB_INGRESS_TC_COUNT,
- devlink_sb->ingress_tc_count))
- goto nla_put_failure;
- if (nla_put_u16(msg, DEVLINK_ATTR_SB_EGRESS_TC_COUNT,
- devlink_sb->egress_tc_count))
- goto nla_put_failure;
-
- genlmsg_end(msg, hdr);
- return 0;
-
-nla_put_failure:
- genlmsg_cancel(msg, hdr);
- return -EMSGSIZE;
-}
-
-static int devlink_nl_cmd_sb_get_doit(struct sk_buff *skb,
- struct genl_info *info)
-{
- struct devlink *devlink = info->user_ptr[0];
- struct devlink_sb *devlink_sb;
- struct sk_buff *msg;
- int err;
-
- devlink_sb = devlink_sb_get_from_info(devlink, info);
- if (IS_ERR(devlink_sb))
- return PTR_ERR(devlink_sb);
-
- msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
- if (!msg)
- return -ENOMEM;
-
- err = devlink_nl_sb_fill(msg, devlink, devlink_sb,
- DEVLINK_CMD_SB_NEW,
- info->snd_portid, info->snd_seq, 0);
- if (err) {
- nlmsg_free(msg);
- return err;
- }
-
- return genlmsg_reply(msg, info);
-}
-
-static int devlink_nl_cmd_sb_get_dumpit(struct sk_buff *msg,
- struct netlink_callback *cb)
-{
- struct devlink *devlink;
- struct devlink_sb *devlink_sb;
- int start = cb->args[0];
- unsigned long index;
- int idx = 0;
- int err;
-
- devlinks_xa_for_each_registered_get(sock_net(msg->sk), index, devlink) {
- devl_lock(devlink);
- list_for_each_entry(devlink_sb, &devlink->sb_list, list) {
- if (idx < start) {
- idx++;
- continue;
- }
- err = devlink_nl_sb_fill(msg, devlink, devlink_sb,
- DEVLINK_CMD_SB_NEW,
- NETLINK_CB(cb->skb).portid,
- cb->nlh->nlmsg_seq,
- NLM_F_MULTI);
- if (err) {
- devl_unlock(devlink);
- devlink_put(devlink);
- goto out;
- }
- idx++;
- }
- devl_unlock(devlink);
- devlink_put(devlink);
- }
-out:
- cb->args[0] = idx;
- return msg->len;
-}
-
-static int devlink_nl_sb_pool_fill(struct sk_buff *msg, struct devlink *devlink,
- struct devlink_sb *devlink_sb,
- u16 pool_index, enum devlink_command cmd,
- u32 portid, u32 seq, int flags)
-{
- struct devlink_sb_pool_info pool_info;
- void *hdr;
- int err;
-
- err = devlink->ops->sb_pool_get(devlink, devlink_sb->index,
- pool_index, &pool_info);
- if (err)
- return err;
-
- hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
- if (!hdr)
- return -EMSGSIZE;
-
- if (devlink_nl_put_handle(msg, devlink))
- goto nla_put_failure;
- if (nla_put_u32(msg, DEVLINK_ATTR_SB_INDEX, devlink_sb->index))
- goto nla_put_failure;
- if (nla_put_u16(msg, DEVLINK_ATTR_SB_POOL_INDEX, pool_index))
- goto nla_put_failure;
- if (nla_put_u8(msg, DEVLINK_ATTR_SB_POOL_TYPE, pool_info.pool_type))
- goto nla_put_failure;
- if (nla_put_u32(msg, DEVLINK_ATTR_SB_POOL_SIZE, pool_info.size))
- goto nla_put_failure;
- if (nla_put_u8(msg, DEVLINK_ATTR_SB_POOL_THRESHOLD_TYPE,
- pool_info.threshold_type))
- goto nla_put_failure;
- if (nla_put_u32(msg, DEVLINK_ATTR_SB_POOL_CELL_SIZE,
- pool_info.cell_size))
- goto nla_put_failure;
-
- genlmsg_end(msg, hdr);
- return 0;
-
-nla_put_failure:
- genlmsg_cancel(msg, hdr);
- return -EMSGSIZE;
-}
-
-static int devlink_nl_cmd_sb_pool_get_doit(struct sk_buff *skb,
- struct genl_info *info)
-{
- struct devlink *devlink = info->user_ptr[0];
- struct devlink_sb *devlink_sb;
- struct sk_buff *msg;
- u16 pool_index;
- int err;
-
- devlink_sb = devlink_sb_get_from_info(devlink, info);
- if (IS_ERR(devlink_sb))
- return PTR_ERR(devlink_sb);
-
- err = devlink_sb_pool_index_get_from_info(devlink_sb, info,
- &pool_index);
- if (err)
- return err;
-
- if (!devlink->ops->sb_pool_get)
- return -EOPNOTSUPP;
-
- msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
- if (!msg)
- return -ENOMEM;
-
- err = devlink_nl_sb_pool_fill(msg, devlink, devlink_sb, pool_index,
- DEVLINK_CMD_SB_POOL_NEW,
- info->snd_portid, info->snd_seq, 0);
- if (err) {
- nlmsg_free(msg);
- return err;
- }
-
- return genlmsg_reply(msg, info);
-}
-
-static int __sb_pool_get_dumpit(struct sk_buff *msg, int start, int *p_idx,
- struct devlink *devlink,
- struct devlink_sb *devlink_sb,
- u32 portid, u32 seq)
-{
- u16 pool_count = devlink_sb_pool_count(devlink_sb);
- u16 pool_index;
- int err;
-
- for (pool_index = 0; pool_index < pool_count; pool_index++) {
- if (*p_idx < start) {
- (*p_idx)++;
- continue;
- }
- err = devlink_nl_sb_pool_fill(msg, devlink,
- devlink_sb,
- pool_index,
- DEVLINK_CMD_SB_POOL_NEW,
- portid, seq, NLM_F_MULTI);
- if (err)
- return err;
- (*p_idx)++;
- }
- return 0;
-}
-
-static int devlink_nl_cmd_sb_pool_get_dumpit(struct sk_buff *msg,
- struct netlink_callback *cb)
-{
- struct devlink *devlink;
- struct devlink_sb *devlink_sb;
- int start = cb->args[0];
- unsigned long index;
- int idx = 0;
- int err = 0;
-
- devlinks_xa_for_each_registered_get(sock_net(msg->sk), index, devlink) {
- if (!devlink->ops->sb_pool_get)
- goto retry;
-
- devl_lock(devlink);
- list_for_each_entry(devlink_sb, &devlink->sb_list, list) {
- err = __sb_pool_get_dumpit(msg, start, &idx, devlink,
- devlink_sb,
- NETLINK_CB(cb->skb).portid,
- cb->nlh->nlmsg_seq);
- if (err == -EOPNOTSUPP) {
- err = 0;
- } else if (err) {
- devl_unlock(devlink);
- devlink_put(devlink);
- goto out;
- }
- }
- devl_unlock(devlink);
-retry:
- devlink_put(devlink);
- }
-out:
- if (err != -EMSGSIZE)
- return err;
-
- cb->args[0] = idx;
- return msg->len;
-}
-
-static int devlink_sb_pool_set(struct devlink *devlink, unsigned int sb_index,
- u16 pool_index, u32 size,
- enum devlink_sb_threshold_type threshold_type,
- struct netlink_ext_ack *extack)
-
-{
- const struct devlink_ops *ops = devlink->ops;
-
- if (ops->sb_pool_set)
- return ops->sb_pool_set(devlink, sb_index, pool_index,
- size, threshold_type, extack);
- return -EOPNOTSUPP;
-}
-
-static int devlink_nl_cmd_sb_pool_set_doit(struct sk_buff *skb,
- struct genl_info *info)
-{
- struct devlink *devlink = info->user_ptr[0];
- enum devlink_sb_threshold_type threshold_type;
- struct devlink_sb *devlink_sb;
- u16 pool_index;
- u32 size;
- int err;
-
- devlink_sb = devlink_sb_get_from_info(devlink, info);
- if (IS_ERR(devlink_sb))
- return PTR_ERR(devlink_sb);
-
- err = devlink_sb_pool_index_get_from_info(devlink_sb, info,
- &pool_index);
- if (err)
- return err;
-
- err = devlink_sb_th_type_get_from_info(info, &threshold_type);
- if (err)
- return err;
-
- if (GENL_REQ_ATTR_CHECK(info, DEVLINK_ATTR_SB_POOL_SIZE))
- return -EINVAL;
-
- size = nla_get_u32(info->attrs[DEVLINK_ATTR_SB_POOL_SIZE]);
- return devlink_sb_pool_set(devlink, devlink_sb->index,
- pool_index, size, threshold_type,
- info->extack);
-}
-
-static int devlink_nl_sb_port_pool_fill(struct sk_buff *msg,
- struct devlink *devlink,
- struct devlink_port *devlink_port,
- struct devlink_sb *devlink_sb,
- u16 pool_index,
- enum devlink_command cmd,
- u32 portid, u32 seq, int flags)
-{
- const struct devlink_ops *ops = devlink->ops;
- u32 threshold;
- void *hdr;
- int err;
-
- err = ops->sb_port_pool_get(devlink_port, devlink_sb->index,
- pool_index, &threshold);
- if (err)
- return err;
-
- hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
- if (!hdr)
- return -EMSGSIZE;
-
- if (devlink_nl_put_handle(msg, devlink))
- goto nla_put_failure;
- if (nla_put_u32(msg, DEVLINK_ATTR_PORT_INDEX, devlink_port->index))
- goto nla_put_failure;
- if (nla_put_u32(msg, DEVLINK_ATTR_SB_INDEX, devlink_sb->index))
- goto nla_put_failure;
- if (nla_put_u16(msg, DEVLINK_ATTR_SB_POOL_INDEX, pool_index))
- goto nla_put_failure;
- if (nla_put_u32(msg, DEVLINK_ATTR_SB_THRESHOLD, threshold))
- goto nla_put_failure;
-
- if (ops->sb_occ_port_pool_get) {
- u32 cur;
- u32 max;
-
- err = ops->sb_occ_port_pool_get(devlink_port, devlink_sb->index,
- pool_index, &cur, &max);
- if (err && err != -EOPNOTSUPP)
- goto sb_occ_get_failure;
- if (!err) {
- if (nla_put_u32(msg, DEVLINK_ATTR_SB_OCC_CUR, cur))
- goto nla_put_failure;
- if (nla_put_u32(msg, DEVLINK_ATTR_SB_OCC_MAX, max))
- goto nla_put_failure;
- }
- }
-
- genlmsg_end(msg, hdr);
- return 0;
-
-nla_put_failure:
- err = -EMSGSIZE;
-sb_occ_get_failure:
- genlmsg_cancel(msg, hdr);
- return err;
-}
-
-static int devlink_nl_cmd_sb_port_pool_get_doit(struct sk_buff *skb,
- struct genl_info *info)
-{
- struct devlink_port *devlink_port = info->user_ptr[1];
- struct devlink *devlink = devlink_port->devlink;
- struct devlink_sb *devlink_sb;
- struct sk_buff *msg;
- u16 pool_index;
- int err;
-
- devlink_sb = devlink_sb_get_from_info(devlink, info);
- if (IS_ERR(devlink_sb))
- return PTR_ERR(devlink_sb);
-
- err = devlink_sb_pool_index_get_from_info(devlink_sb, info,
- &pool_index);
- if (err)
- return err;
-
- if (!devlink->ops->sb_port_pool_get)
- return -EOPNOTSUPP;
-
- msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
- if (!msg)
- return -ENOMEM;
-
- err = devlink_nl_sb_port_pool_fill(msg, devlink, devlink_port,
- devlink_sb, pool_index,
- DEVLINK_CMD_SB_PORT_POOL_NEW,
- info->snd_portid, info->snd_seq, 0);
- if (err) {
- nlmsg_free(msg);
- return err;
- }
-
- return genlmsg_reply(msg, info);
-}
-
-static int __sb_port_pool_get_dumpit(struct sk_buff *msg, int start, int *p_idx,
- struct devlink *devlink,
- struct devlink_sb *devlink_sb,
- u32 portid, u32 seq)
-{
- struct devlink_port *devlink_port;
- u16 pool_count = devlink_sb_pool_count(devlink_sb);
- u16 pool_index;
- int err;
-
- list_for_each_entry(devlink_port, &devlink->port_list, list) {
- for (pool_index = 0; pool_index < pool_count; pool_index++) {
- if (*p_idx < start) {
- (*p_idx)++;
- continue;
- }
- err = devlink_nl_sb_port_pool_fill(msg, devlink,
- devlink_port,
- devlink_sb,
- pool_index,
- DEVLINK_CMD_SB_PORT_POOL_NEW,
- portid, seq,
- NLM_F_MULTI);
- if (err)
- return err;
- (*p_idx)++;
- }
- }
- return 0;
-}
-
-static int devlink_nl_cmd_sb_port_pool_get_dumpit(struct sk_buff *msg,
- struct netlink_callback *cb)
-{
- struct devlink *devlink;
- struct devlink_sb *devlink_sb;
- int start = cb->args[0];
- unsigned long index;
- int idx = 0;
- int err = 0;
-
- devlinks_xa_for_each_registered_get(sock_net(msg->sk), index, devlink) {
- if (!devlink->ops->sb_port_pool_get)
- goto retry;
-
- devl_lock(devlink);
- list_for_each_entry(devlink_sb, &devlink->sb_list, list) {
- err = __sb_port_pool_get_dumpit(msg, start, &idx,
- devlink, devlink_sb,
- NETLINK_CB(cb->skb).portid,
- cb->nlh->nlmsg_seq);
- if (err == -EOPNOTSUPP) {
- err = 0;
- } else if (err) {
- devl_unlock(devlink);
- devlink_put(devlink);
- goto out;
- }
- }
- devl_unlock(devlink);
-retry:
- devlink_put(devlink);
- }
-out:
- if (err != -EMSGSIZE)
- return err;
-
- cb->args[0] = idx;
- return msg->len;
-}
-
-static int devlink_sb_port_pool_set(struct devlink_port *devlink_port,
- unsigned int sb_index, u16 pool_index,
- u32 threshold,
- struct netlink_ext_ack *extack)
-
-{
- const struct devlink_ops *ops = devlink_port->devlink->ops;
-
- if (ops->sb_port_pool_set)
- return ops->sb_port_pool_set(devlink_port, sb_index,
- pool_index, threshold, extack);
- return -EOPNOTSUPP;
-}
-
-static int devlink_nl_cmd_sb_port_pool_set_doit(struct sk_buff *skb,
- struct genl_info *info)
-{
- struct devlink_port *devlink_port = info->user_ptr[1];
- struct devlink *devlink = info->user_ptr[0];
- struct devlink_sb *devlink_sb;
- u16 pool_index;
- u32 threshold;
- int err;
-
- devlink_sb = devlink_sb_get_from_info(devlink, info);
- if (IS_ERR(devlink_sb))
- return PTR_ERR(devlink_sb);
-
- err = devlink_sb_pool_index_get_from_info(devlink_sb, info,
- &pool_index);
- if (err)
- return err;
-
- if (GENL_REQ_ATTR_CHECK(info, DEVLINK_ATTR_SB_THRESHOLD))
- return -EINVAL;
-
- threshold = nla_get_u32(info->attrs[DEVLINK_ATTR_SB_THRESHOLD]);
- return devlink_sb_port_pool_set(devlink_port, devlink_sb->index,
- pool_index, threshold, info->extack);
-}
-
-static int
-devlink_nl_sb_tc_pool_bind_fill(struct sk_buff *msg, struct devlink *devlink,
- struct devlink_port *devlink_port,
- struct devlink_sb *devlink_sb, u16 tc_index,
- enum devlink_sb_pool_type pool_type,
- enum devlink_command cmd,
- u32 portid, u32 seq, int flags)
-{
- const struct devlink_ops *ops = devlink->ops;
- u16 pool_index;
- u32 threshold;
- void *hdr;
- int err;
-
- err = ops->sb_tc_pool_bind_get(devlink_port, devlink_sb->index,
- tc_index, pool_type,
- &pool_index, &threshold);
- if (err)
- return err;
-
- hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
- if (!hdr)
- return -EMSGSIZE;
-
- if (devlink_nl_put_handle(msg, devlink))
- goto nla_put_failure;
- if (nla_put_u32(msg, DEVLINK_ATTR_PORT_INDEX, devlink_port->index))
- goto nla_put_failure;
- if (nla_put_u32(msg, DEVLINK_ATTR_SB_INDEX, devlink_sb->index))
- goto nla_put_failure;
- if (nla_put_u16(msg, DEVLINK_ATTR_SB_TC_INDEX, tc_index))
- goto nla_put_failure;
- if (nla_put_u8(msg, DEVLINK_ATTR_SB_POOL_TYPE, pool_type))
- goto nla_put_failure;
- if (nla_put_u16(msg, DEVLINK_ATTR_SB_POOL_INDEX, pool_index))
- goto nla_put_failure;
- if (nla_put_u32(msg, DEVLINK_ATTR_SB_THRESHOLD, threshold))
- goto nla_put_failure;
-
- if (ops->sb_occ_tc_port_bind_get) {
- u32 cur;
- u32 max;
-
- err = ops->sb_occ_tc_port_bind_get(devlink_port,
- devlink_sb->index,
- tc_index, pool_type,
- &cur, &max);
- if (err && err != -EOPNOTSUPP)
- return err;
- if (!err) {
- if (nla_put_u32(msg, DEVLINK_ATTR_SB_OCC_CUR, cur))
- goto nla_put_failure;
- if (nla_put_u32(msg, DEVLINK_ATTR_SB_OCC_MAX, max))
- goto nla_put_failure;
- }
- }
-
- genlmsg_end(msg, hdr);
- return 0;
-
-nla_put_failure:
- genlmsg_cancel(msg, hdr);
- return -EMSGSIZE;
-}
-
-static int devlink_nl_cmd_sb_tc_pool_bind_get_doit(struct sk_buff *skb,
- struct genl_info *info)
-{
- struct devlink_port *devlink_port = info->user_ptr[1];
- struct devlink *devlink = devlink_port->devlink;
- struct devlink_sb *devlink_sb;
- struct sk_buff *msg;
- enum devlink_sb_pool_type pool_type;
- u16 tc_index;
- int err;
-
- devlink_sb = devlink_sb_get_from_info(devlink, info);
- if (IS_ERR(devlink_sb))
- return PTR_ERR(devlink_sb);
-
- err = devlink_sb_pool_type_get_from_info(info, &pool_type);
- if (err)
- return err;
-
- err = devlink_sb_tc_index_get_from_info(devlink_sb, info,
- pool_type, &tc_index);
- if (err)
- return err;
-
- if (!devlink->ops->sb_tc_pool_bind_get)
- return -EOPNOTSUPP;
-
- msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
- if (!msg)
- return -ENOMEM;
-
- err = devlink_nl_sb_tc_pool_bind_fill(msg, devlink, devlink_port,
- devlink_sb, tc_index, pool_type,
- DEVLINK_CMD_SB_TC_POOL_BIND_NEW,
- info->snd_portid,
- info->snd_seq, 0);
- if (err) {
- nlmsg_free(msg);
- return err;
- }
-
- return genlmsg_reply(msg, info);
-}
-
-static int __sb_tc_pool_bind_get_dumpit(struct sk_buff *msg,
- int start, int *p_idx,
- struct devlink *devlink,
- struct devlink_sb *devlink_sb,
- u32 portid, u32 seq)
-{
- struct devlink_port *devlink_port;
- u16 tc_index;
- int err;
-
- list_for_each_entry(devlink_port, &devlink->port_list, list) {
- for (tc_index = 0;
- tc_index < devlink_sb->ingress_tc_count; tc_index++) {
- if (*p_idx < start) {
- (*p_idx)++;
- continue;
- }
- err = devlink_nl_sb_tc_pool_bind_fill(msg, devlink,
- devlink_port,
- devlink_sb,
- tc_index,
- DEVLINK_SB_POOL_TYPE_INGRESS,
- DEVLINK_CMD_SB_TC_POOL_BIND_NEW,
- portid, seq,
- NLM_F_MULTI);
- if (err)
- return err;
- (*p_idx)++;
- }
- for (tc_index = 0;
- tc_index < devlink_sb->egress_tc_count; tc_index++) {
- if (*p_idx < start) {
- (*p_idx)++;
- continue;
- }
- err = devlink_nl_sb_tc_pool_bind_fill(msg, devlink,
- devlink_port,
- devlink_sb,
- tc_index,
- DEVLINK_SB_POOL_TYPE_EGRESS,
- DEVLINK_CMD_SB_TC_POOL_BIND_NEW,
- portid, seq,
- NLM_F_MULTI);
- if (err)
- return err;
- (*p_idx)++;
- }
- }
- return 0;
-}
-
-static int
-devlink_nl_cmd_sb_tc_pool_bind_get_dumpit(struct sk_buff *msg,
- struct netlink_callback *cb)
-{
- struct devlink *devlink;
- struct devlink_sb *devlink_sb;
- int start = cb->args[0];
- unsigned long index;
- int idx = 0;
- int err = 0;
-
- devlinks_xa_for_each_registered_get(sock_net(msg->sk), index, devlink) {
- if (!devlink->ops->sb_tc_pool_bind_get)
- goto retry;
-
- devl_lock(devlink);
- list_for_each_entry(devlink_sb, &devlink->sb_list, list) {
- err = __sb_tc_pool_bind_get_dumpit(msg, start, &idx,
- devlink,
- devlink_sb,
- NETLINK_CB(cb->skb).portid,
- cb->nlh->nlmsg_seq);
- if (err == -EOPNOTSUPP) {
- err = 0;
- } else if (err) {
- devl_unlock(devlink);
- devlink_put(devlink);
- goto out;
- }
- }
- devl_unlock(devlink);
-retry:
- devlink_put(devlink);
- }
-out:
- if (err != -EMSGSIZE)
- return err;
-
- cb->args[0] = idx;
- return msg->len;
-}
-
-static int devlink_sb_tc_pool_bind_set(struct devlink_port *devlink_port,
- unsigned int sb_index, u16 tc_index,
- enum devlink_sb_pool_type pool_type,
- u16 pool_index, u32 threshold,
- struct netlink_ext_ack *extack)
-
-{
- const struct devlink_ops *ops = devlink_port->devlink->ops;
-
- if (ops->sb_tc_pool_bind_set)
- return ops->sb_tc_pool_bind_set(devlink_port, sb_index,
- tc_index, pool_type,
- pool_index, threshold, extack);
- return -EOPNOTSUPP;
-}
-
-static int devlink_nl_cmd_sb_tc_pool_bind_set_doit(struct sk_buff *skb,
- struct genl_info *info)
-{
- struct devlink_port *devlink_port = info->user_ptr[1];
- struct devlink *devlink = info->user_ptr[0];
- enum devlink_sb_pool_type pool_type;
- struct devlink_sb *devlink_sb;
- u16 tc_index;
- u16 pool_index;
- u32 threshold;
- int err;
-
- devlink_sb = devlink_sb_get_from_info(devlink, info);
- if (IS_ERR(devlink_sb))
- return PTR_ERR(devlink_sb);
-
- err = devlink_sb_pool_type_get_from_info(info, &pool_type);
- if (err)
- return err;
-
- err = devlink_sb_tc_index_get_from_info(devlink_sb, info,
- pool_type, &tc_index);
- if (err)
- return err;
-
- err = devlink_sb_pool_index_get_from_info(devlink_sb, info,
- &pool_index);
- if (err)
- return err;
-
- if (GENL_REQ_ATTR_CHECK(info, DEVLINK_ATTR_SB_THRESHOLD))
- return -EINVAL;
-
- threshold = nla_get_u32(info->attrs[DEVLINK_ATTR_SB_THRESHOLD]);
- return devlink_sb_tc_pool_bind_set(devlink_port, devlink_sb->index,
- tc_index, pool_type,
- pool_index, threshold, info->extack);
-}
-
-static int devlink_nl_cmd_sb_occ_snapshot_doit(struct sk_buff *skb,
- struct genl_info *info)
-{
- struct devlink *devlink = info->user_ptr[0];
- const struct devlink_ops *ops = devlink->ops;
- struct devlink_sb *devlink_sb;
-
- devlink_sb = devlink_sb_get_from_info(devlink, info);
- if (IS_ERR(devlink_sb))
- return PTR_ERR(devlink_sb);
-
- if (ops->sb_occ_snapshot)
- return ops->sb_occ_snapshot(devlink, devlink_sb->index);
- return -EOPNOTSUPP;
-}
-
-static int devlink_nl_cmd_sb_occ_max_clear_doit(struct sk_buff *skb,
- struct genl_info *info)
-{
- struct devlink *devlink = info->user_ptr[0];
- const struct devlink_ops *ops = devlink->ops;
- struct devlink_sb *devlink_sb;
-
- devlink_sb = devlink_sb_get_from_info(devlink, info);
- if (IS_ERR(devlink_sb))
- return PTR_ERR(devlink_sb);
-
- if (ops->sb_occ_max_clear)
- return ops->sb_occ_max_clear(devlink, devlink_sb->index);
- return -EOPNOTSUPP;
-}
-
-static int devlink_nl_eswitch_fill(struct sk_buff *msg, struct devlink *devlink,
- enum devlink_command cmd, u32 portid,
- u32 seq, int flags)
-{
- const struct devlink_ops *ops = devlink->ops;
- enum devlink_eswitch_encap_mode encap_mode;
- u8 inline_mode;
- void *hdr;
- int err = 0;
- u16 mode;
-
- hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
- if (!hdr)
- return -EMSGSIZE;
-
- err = devlink_nl_put_handle(msg, devlink);
- if (err)
- goto nla_put_failure;
-
- if (ops->eswitch_mode_get) {
- err = ops->eswitch_mode_get(devlink, &mode);
- if (err)
- goto nla_put_failure;
- err = nla_put_u16(msg, DEVLINK_ATTR_ESWITCH_MODE, mode);
- if (err)
- goto nla_put_failure;
- }
-
- if (ops->eswitch_inline_mode_get) {
- err = ops->eswitch_inline_mode_get(devlink, &inline_mode);
- if (err)
- goto nla_put_failure;
- err = nla_put_u8(msg, DEVLINK_ATTR_ESWITCH_INLINE_MODE,
- inline_mode);
- if (err)
- goto nla_put_failure;
- }
-
- if (ops->eswitch_encap_mode_get) {
- err = ops->eswitch_encap_mode_get(devlink, &encap_mode);
- if (err)
- goto nla_put_failure;
- err = nla_put_u8(msg, DEVLINK_ATTR_ESWITCH_ENCAP_MODE, encap_mode);
- if (err)
- goto nla_put_failure;
- }
-
- genlmsg_end(msg, hdr);
- return 0;
-
-nla_put_failure:
- genlmsg_cancel(msg, hdr);
- return err;
-}
-
-static int devlink_nl_cmd_eswitch_get_doit(struct sk_buff *skb,
- struct genl_info *info)
-{
- struct devlink *devlink = info->user_ptr[0];
- struct sk_buff *msg;
- int err;
-
- msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
- if (!msg)
- return -ENOMEM;
-
- err = devlink_nl_eswitch_fill(msg, devlink, DEVLINK_CMD_ESWITCH_GET,
- info->snd_portid, info->snd_seq, 0);
-
- if (err) {
- nlmsg_free(msg);
- return err;
- }
-
- return genlmsg_reply(msg, info);
-}
-
-static int devlink_rate_nodes_check(struct devlink *devlink, u16 mode,
- struct netlink_ext_ack *extack)
-{
- struct devlink_rate *devlink_rate;
-
- list_for_each_entry(devlink_rate, &devlink->rate_list, list)
- if (devlink_rate_is_node(devlink_rate)) {
- NL_SET_ERR_MSG_MOD(extack, "Rate node(s) exists.");
- return -EBUSY;
- }
- return 0;
-}
-
-static int devlink_nl_cmd_eswitch_set_doit(struct sk_buff *skb,
- struct genl_info *info)
-{
- struct devlink *devlink = info->user_ptr[0];
- const struct devlink_ops *ops = devlink->ops;
- enum devlink_eswitch_encap_mode encap_mode;
- u8 inline_mode;
- int err = 0;
- u16 mode;
-
- if (info->attrs[DEVLINK_ATTR_ESWITCH_MODE]) {
- if (!ops->eswitch_mode_set)
- return -EOPNOTSUPP;
- mode = nla_get_u16(info->attrs[DEVLINK_ATTR_ESWITCH_MODE]);
- err = devlink_rate_nodes_check(devlink, mode, info->extack);
- if (err)
- return err;
- err = ops->eswitch_mode_set(devlink, mode, info->extack);
- if (err)
- return err;
- }
-
- if (info->attrs[DEVLINK_ATTR_ESWITCH_INLINE_MODE]) {
- if (!ops->eswitch_inline_mode_set)
- return -EOPNOTSUPP;
- inline_mode = nla_get_u8(
- info->attrs[DEVLINK_ATTR_ESWITCH_INLINE_MODE]);
- err = ops->eswitch_inline_mode_set(devlink, inline_mode,
- info->extack);
- if (err)
- return err;
- }
-
- if (info->attrs[DEVLINK_ATTR_ESWITCH_ENCAP_MODE]) {
- if (!ops->eswitch_encap_mode_set)
- return -EOPNOTSUPP;
- encap_mode = nla_get_u8(info->attrs[DEVLINK_ATTR_ESWITCH_ENCAP_MODE]);
- err = ops->eswitch_encap_mode_set(devlink, encap_mode,
- info->extack);
- if (err)
- return err;
- }
-
- return 0;
-}
-
-int devlink_dpipe_match_put(struct sk_buff *skb,
- struct devlink_dpipe_match *match)
-{
- struct devlink_dpipe_header *header = match->header;
- struct devlink_dpipe_field *field = &header->fields[match->field_id];
- struct nlattr *match_attr;
-
- match_attr = nla_nest_start_noflag(skb, DEVLINK_ATTR_DPIPE_MATCH);
- if (!match_attr)
- return -EMSGSIZE;
-
- if (nla_put_u32(skb, DEVLINK_ATTR_DPIPE_MATCH_TYPE, match->type) ||
- nla_put_u32(skb, DEVLINK_ATTR_DPIPE_HEADER_INDEX, match->header_index) ||
- nla_put_u32(skb, DEVLINK_ATTR_DPIPE_HEADER_ID, header->id) ||
- nla_put_u32(skb, DEVLINK_ATTR_DPIPE_FIELD_ID, field->id) ||
- nla_put_u8(skb, DEVLINK_ATTR_DPIPE_HEADER_GLOBAL, header->global))
- goto nla_put_failure;
-
- nla_nest_end(skb, match_attr);
- return 0;
-
-nla_put_failure:
- nla_nest_cancel(skb, match_attr);
- return -EMSGSIZE;
-}
-EXPORT_SYMBOL_GPL(devlink_dpipe_match_put);
-
-static int devlink_dpipe_matches_put(struct devlink_dpipe_table *table,
- struct sk_buff *skb)
-{
- struct nlattr *matches_attr;
-
- matches_attr = nla_nest_start_noflag(skb,
- DEVLINK_ATTR_DPIPE_TABLE_MATCHES);
- if (!matches_attr)
- return -EMSGSIZE;
-
- if (table->table_ops->matches_dump(table->priv, skb))
- goto nla_put_failure;
-
- nla_nest_end(skb, matches_attr);
- return 0;
-
-nla_put_failure:
- nla_nest_cancel(skb, matches_attr);
- return -EMSGSIZE;
-}
-
-int devlink_dpipe_action_put(struct sk_buff *skb,
- struct devlink_dpipe_action *action)
-{
- struct devlink_dpipe_header *header = action->header;
- struct devlink_dpipe_field *field = &header->fields[action->field_id];
- struct nlattr *action_attr;
-
- action_attr = nla_nest_start_noflag(skb, DEVLINK_ATTR_DPIPE_ACTION);
- if (!action_attr)
- return -EMSGSIZE;
-
- if (nla_put_u32(skb, DEVLINK_ATTR_DPIPE_ACTION_TYPE, action->type) ||
- nla_put_u32(skb, DEVLINK_ATTR_DPIPE_HEADER_INDEX, action->header_index) ||
- nla_put_u32(skb, DEVLINK_ATTR_DPIPE_HEADER_ID, header->id) ||
- nla_put_u32(skb, DEVLINK_ATTR_DPIPE_FIELD_ID, field->id) ||
- nla_put_u8(skb, DEVLINK_ATTR_DPIPE_HEADER_GLOBAL, header->global))
- goto nla_put_failure;
-
- nla_nest_end(skb, action_attr);
- return 0;
-
-nla_put_failure:
- nla_nest_cancel(skb, action_attr);
- return -EMSGSIZE;
-}
-EXPORT_SYMBOL_GPL(devlink_dpipe_action_put);
-
-static int devlink_dpipe_actions_put(struct devlink_dpipe_table *table,
- struct sk_buff *skb)
-{
- struct nlattr *actions_attr;
-
- actions_attr = nla_nest_start_noflag(skb,
- DEVLINK_ATTR_DPIPE_TABLE_ACTIONS);
- if (!actions_attr)
- return -EMSGSIZE;
-
- if (table->table_ops->actions_dump(table->priv, skb))
- goto nla_put_failure;
-
- nla_nest_end(skb, actions_attr);
- return 0;
-
-nla_put_failure:
- nla_nest_cancel(skb, actions_attr);
- return -EMSGSIZE;
-}
-
-static int devlink_dpipe_table_put(struct sk_buff *skb,
- struct devlink_dpipe_table *table)
-{
- struct nlattr *table_attr;
- u64 table_size;
-
- table_size = table->table_ops->size_get(table->priv);
- table_attr = nla_nest_start_noflag(skb, DEVLINK_ATTR_DPIPE_TABLE);
- if (!table_attr)
- return -EMSGSIZE;
-
- if (nla_put_string(skb, DEVLINK_ATTR_DPIPE_TABLE_NAME, table->name) ||
- nla_put_u64_64bit(skb, DEVLINK_ATTR_DPIPE_TABLE_SIZE, table_size,
- DEVLINK_ATTR_PAD))
- goto nla_put_failure;
- if (nla_put_u8(skb, DEVLINK_ATTR_DPIPE_TABLE_COUNTERS_ENABLED,
- table->counters_enabled))
- goto nla_put_failure;
-
- if (table->resource_valid) {
- if (nla_put_u64_64bit(skb, DEVLINK_ATTR_DPIPE_TABLE_RESOURCE_ID,
- table->resource_id, DEVLINK_ATTR_PAD) ||
- nla_put_u64_64bit(skb, DEVLINK_ATTR_DPIPE_TABLE_RESOURCE_UNITS,
- table->resource_units, DEVLINK_ATTR_PAD))
- goto nla_put_failure;
- }
- if (devlink_dpipe_matches_put(table, skb))
- goto nla_put_failure;
-
- if (devlink_dpipe_actions_put(table, skb))
- goto nla_put_failure;
-
- nla_nest_end(skb, table_attr);
- return 0;
-
-nla_put_failure:
- nla_nest_cancel(skb, table_attr);
- return -EMSGSIZE;
-}
-
-static int devlink_dpipe_send_and_alloc_skb(struct sk_buff **pskb,
- struct genl_info *info)
-{
- int err;
-
- if (*pskb) {
- err = genlmsg_reply(*pskb, info);
- if (err)
- return err;
- }
- *pskb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_KERNEL);
- if (!*pskb)
- return -ENOMEM;
- return 0;
-}
-
-static int devlink_dpipe_tables_fill(struct genl_info *info,
- enum devlink_command cmd, int flags,
- struct list_head *dpipe_tables,
- const char *table_name)
-{
- struct devlink *devlink = info->user_ptr[0];
- struct devlink_dpipe_table *table;
- struct nlattr *tables_attr;
- struct sk_buff *skb = NULL;
- struct nlmsghdr *nlh;
- bool incomplete;
- void *hdr;
- int i;
- int err;
-
- table = list_first_entry(dpipe_tables,
- struct devlink_dpipe_table, list);
-start_again:
- err = devlink_dpipe_send_and_alloc_skb(&skb, info);
- if (err)
- return err;
-
- hdr = genlmsg_put(skb, info->snd_portid, info->snd_seq,
- &devlink_nl_family, NLM_F_MULTI, cmd);
- if (!hdr) {
- nlmsg_free(skb);
- return -EMSGSIZE;
- }
-
- if (devlink_nl_put_handle(skb, devlink))
- goto nla_put_failure;
- tables_attr = nla_nest_start_noflag(skb, DEVLINK_ATTR_DPIPE_TABLES);
- if (!tables_attr)
- goto nla_put_failure;
-
- i = 0;
- incomplete = false;
- list_for_each_entry_from(table, dpipe_tables, list) {
- if (!table_name) {
- err = devlink_dpipe_table_put(skb, table);
- if (err) {
- if (!i)
- goto err_table_put;
- incomplete = true;
- break;
- }
- } else {
- if (!strcmp(table->name, table_name)) {
- err = devlink_dpipe_table_put(skb, table);
- if (err)
- break;
- }
- }
- i++;
- }
-
- nla_nest_end(skb, tables_attr);
- genlmsg_end(skb, hdr);
- if (incomplete)
- goto start_again;
-
-send_done:
- nlh = nlmsg_put(skb, info->snd_portid, info->snd_seq,
- NLMSG_DONE, 0, flags | NLM_F_MULTI);
- if (!nlh) {
- err = devlink_dpipe_send_and_alloc_skb(&skb, info);
- if (err)
- return err;
- goto send_done;
- }
-
- return genlmsg_reply(skb, info);
-
-nla_put_failure:
- err = -EMSGSIZE;
-err_table_put:
- nlmsg_free(skb);
- return err;
-}
-
-static int devlink_nl_cmd_dpipe_table_get(struct sk_buff *skb,
- struct genl_info *info)
-{
- struct devlink *devlink = info->user_ptr[0];
- const char *table_name = NULL;
-
- if (info->attrs[DEVLINK_ATTR_DPIPE_TABLE_NAME])
- table_name = nla_data(info->attrs[DEVLINK_ATTR_DPIPE_TABLE_NAME]);
-
- return devlink_dpipe_tables_fill(info, DEVLINK_CMD_DPIPE_TABLE_GET, 0,
- &devlink->dpipe_table_list,
- table_name);
-}
-
-static int devlink_dpipe_value_put(struct sk_buff *skb,
- struct devlink_dpipe_value *value)
-{
- if (nla_put(skb, DEVLINK_ATTR_DPIPE_VALUE,
- value->value_size, value->value))
- return -EMSGSIZE;
- if (value->mask)
- if (nla_put(skb, DEVLINK_ATTR_DPIPE_VALUE_MASK,
- value->value_size, value->mask))
- return -EMSGSIZE;
- if (value->mapping_valid)
- if (nla_put_u32(skb, DEVLINK_ATTR_DPIPE_VALUE_MAPPING,
- value->mapping_value))
- return -EMSGSIZE;
- return 0;
-}
-
-static int devlink_dpipe_action_value_put(struct sk_buff *skb,
- struct devlink_dpipe_value *value)
-{
- if (!value->action)
- return -EINVAL;
- if (devlink_dpipe_action_put(skb, value->action))
- return -EMSGSIZE;
- if (devlink_dpipe_value_put(skb, value))
- return -EMSGSIZE;
- return 0;
-}
-
-static int devlink_dpipe_action_values_put(struct sk_buff *skb,
- struct devlink_dpipe_value *values,
- unsigned int values_count)
-{
- struct nlattr *action_attr;
- int i;
- int err;
-
- for (i = 0; i < values_count; i++) {
- action_attr = nla_nest_start_noflag(skb,
- DEVLINK_ATTR_DPIPE_ACTION_VALUE);
- if (!action_attr)
- return -EMSGSIZE;
- err = devlink_dpipe_action_value_put(skb, &values[i]);
- if (err)
- goto err_action_value_put;
- nla_nest_end(skb, action_attr);
- }
- return 0;
-
-err_action_value_put:
- nla_nest_cancel(skb, action_attr);
- return err;
-}
-
-static int devlink_dpipe_match_value_put(struct sk_buff *skb,
- struct devlink_dpipe_value *value)
-{
- if (!value->match)
- return -EINVAL;
- if (devlink_dpipe_match_put(skb, value->match))
- return -EMSGSIZE;
- if (devlink_dpipe_value_put(skb, value))
- return -EMSGSIZE;
- return 0;
-}
-
-static int devlink_dpipe_match_values_put(struct sk_buff *skb,
- struct devlink_dpipe_value *values,
- unsigned int values_count)
-{
- struct nlattr *match_attr;
- int i;
- int err;
-
- for (i = 0; i < values_count; i++) {
- match_attr = nla_nest_start_noflag(skb,
- DEVLINK_ATTR_DPIPE_MATCH_VALUE);
- if (!match_attr)
- return -EMSGSIZE;
- err = devlink_dpipe_match_value_put(skb, &values[i]);
- if (err)
- goto err_match_value_put;
- nla_nest_end(skb, match_attr);
- }
- return 0;
-
-err_match_value_put:
- nla_nest_cancel(skb, match_attr);
- return err;
-}
-
-static int devlink_dpipe_entry_put(struct sk_buff *skb,
- struct devlink_dpipe_entry *entry)
-{
- struct nlattr *entry_attr, *matches_attr, *actions_attr;
- int err;
-
- entry_attr = nla_nest_start_noflag(skb, DEVLINK_ATTR_DPIPE_ENTRY);
- if (!entry_attr)
- return -EMSGSIZE;
-
- if (nla_put_u64_64bit(skb, DEVLINK_ATTR_DPIPE_ENTRY_INDEX, entry->index,
- DEVLINK_ATTR_PAD))
- goto nla_put_failure;
- if (entry->counter_valid)
- if (nla_put_u64_64bit(skb, DEVLINK_ATTR_DPIPE_ENTRY_COUNTER,
- entry->counter, DEVLINK_ATTR_PAD))
- goto nla_put_failure;
-
- matches_attr = nla_nest_start_noflag(skb,
- DEVLINK_ATTR_DPIPE_ENTRY_MATCH_VALUES);
- if (!matches_attr)
- goto nla_put_failure;
-
- err = devlink_dpipe_match_values_put(skb, entry->match_values,
- entry->match_values_count);
- if (err) {
- nla_nest_cancel(skb, matches_attr);
- goto err_match_values_put;
- }
- nla_nest_end(skb, matches_attr);
-
- actions_attr = nla_nest_start_noflag(skb,
- DEVLINK_ATTR_DPIPE_ENTRY_ACTION_VALUES);
- if (!actions_attr)
- goto nla_put_failure;
-
- err = devlink_dpipe_action_values_put(skb, entry->action_values,
- entry->action_values_count);
- if (err) {
- nla_nest_cancel(skb, actions_attr);
- goto err_action_values_put;
- }
- nla_nest_end(skb, actions_attr);
-
- nla_nest_end(skb, entry_attr);
- return 0;
-
-nla_put_failure:
- err = -EMSGSIZE;
-err_match_values_put:
-err_action_values_put:
- nla_nest_cancel(skb, entry_attr);
- return err;
-}
-
-static struct devlink_dpipe_table *
-devlink_dpipe_table_find(struct list_head *dpipe_tables,
- const char *table_name, struct devlink *devlink)
-{
- struct devlink_dpipe_table *table;
- list_for_each_entry_rcu(table, dpipe_tables, list,
- lockdep_is_held(&devlink->lock)) {
- if (!strcmp(table->name, table_name))
- return table;
- }
- return NULL;
-}
-
-int devlink_dpipe_entry_ctx_prepare(struct devlink_dpipe_dump_ctx *dump_ctx)
-{
- struct devlink *devlink;
- int err;
-
- err = devlink_dpipe_send_and_alloc_skb(&dump_ctx->skb,
- dump_ctx->info);
- if (err)
- return err;
-
- dump_ctx->hdr = genlmsg_put(dump_ctx->skb,
- dump_ctx->info->snd_portid,
- dump_ctx->info->snd_seq,
- &devlink_nl_family, NLM_F_MULTI,
- dump_ctx->cmd);
- if (!dump_ctx->hdr)
- goto nla_put_failure;
-
- devlink = dump_ctx->info->user_ptr[0];
- if (devlink_nl_put_handle(dump_ctx->skb, devlink))
- goto nla_put_failure;
- dump_ctx->nest = nla_nest_start_noflag(dump_ctx->skb,
- DEVLINK_ATTR_DPIPE_ENTRIES);
- if (!dump_ctx->nest)
- goto nla_put_failure;
- return 0;
-
-nla_put_failure:
- nlmsg_free(dump_ctx->skb);
- return -EMSGSIZE;
-}
-EXPORT_SYMBOL_GPL(devlink_dpipe_entry_ctx_prepare);
-
-int devlink_dpipe_entry_ctx_append(struct devlink_dpipe_dump_ctx *dump_ctx,
- struct devlink_dpipe_entry *entry)
-{
- return devlink_dpipe_entry_put(dump_ctx->skb, entry);
-}
-EXPORT_SYMBOL_GPL(devlink_dpipe_entry_ctx_append);
-
-int devlink_dpipe_entry_ctx_close(struct devlink_dpipe_dump_ctx *dump_ctx)
-{
- nla_nest_end(dump_ctx->skb, dump_ctx->nest);
- genlmsg_end(dump_ctx->skb, dump_ctx->hdr);
- return 0;
-}
-EXPORT_SYMBOL_GPL(devlink_dpipe_entry_ctx_close);
-
-void devlink_dpipe_entry_clear(struct devlink_dpipe_entry *entry)
-
-{
- unsigned int value_count, value_index;
- struct devlink_dpipe_value *value;
-
- value = entry->action_values;
- value_count = entry->action_values_count;
- for (value_index = 0; value_index < value_count; value_index++) {
- kfree(value[value_index].value);
- kfree(value[value_index].mask);
- }
-
- value = entry->match_values;
- value_count = entry->match_values_count;
- for (value_index = 0; value_index < value_count; value_index++) {
- kfree(value[value_index].value);
- kfree(value[value_index].mask);
- }
-}
-EXPORT_SYMBOL_GPL(devlink_dpipe_entry_clear);
-
-static int devlink_dpipe_entries_fill(struct genl_info *info,
- enum devlink_command cmd, int flags,
- struct devlink_dpipe_table *table)
-{
- struct devlink_dpipe_dump_ctx dump_ctx;
- struct nlmsghdr *nlh;
- int err;
-
- dump_ctx.skb = NULL;
- dump_ctx.cmd = cmd;
- dump_ctx.info = info;
-
- err = table->table_ops->entries_dump(table->priv,
- table->counters_enabled,
- &dump_ctx);
- if (err)
- return err;
-
-send_done:
- nlh = nlmsg_put(dump_ctx.skb, info->snd_portid, info->snd_seq,
- NLMSG_DONE, 0, flags | NLM_F_MULTI);
- if (!nlh) {
- err = devlink_dpipe_send_and_alloc_skb(&dump_ctx.skb, info);
- if (err)
- return err;
- goto send_done;
- }
- return genlmsg_reply(dump_ctx.skb, info);
-}
-
-static int devlink_nl_cmd_dpipe_entries_get(struct sk_buff *skb,
- struct genl_info *info)
-{
- struct devlink *devlink = info->user_ptr[0];
- struct devlink_dpipe_table *table;
- const char *table_name;
-
- if (GENL_REQ_ATTR_CHECK(info, DEVLINK_ATTR_DPIPE_TABLE_NAME))
- return -EINVAL;
-
- table_name = nla_data(info->attrs[DEVLINK_ATTR_DPIPE_TABLE_NAME]);
- table = devlink_dpipe_table_find(&devlink->dpipe_table_list,
- table_name, devlink);
- if (!table)
- return -EINVAL;
-
- if (!table->table_ops->entries_dump)
- return -EINVAL;
-
- return devlink_dpipe_entries_fill(info, DEVLINK_CMD_DPIPE_ENTRIES_GET,
- 0, table);
-}
-
-static int devlink_dpipe_fields_put(struct sk_buff *skb,
- const struct devlink_dpipe_header *header)
-{
- struct devlink_dpipe_field *field;
- struct nlattr *field_attr;
- int i;
-
- for (i = 0; i < header->fields_count; i++) {
- field = &header->fields[i];
- field_attr = nla_nest_start_noflag(skb,
- DEVLINK_ATTR_DPIPE_FIELD);
- if (!field_attr)
- return -EMSGSIZE;
- if (nla_put_string(skb, DEVLINK_ATTR_DPIPE_FIELD_NAME, field->name) ||
- nla_put_u32(skb, DEVLINK_ATTR_DPIPE_FIELD_ID, field->id) ||
- nla_put_u32(skb, DEVLINK_ATTR_DPIPE_FIELD_BITWIDTH, field->bitwidth) ||
- nla_put_u32(skb, DEVLINK_ATTR_DPIPE_FIELD_MAPPING_TYPE, field->mapping_type))
- goto nla_put_failure;
- nla_nest_end(skb, field_attr);
- }
- return 0;
-
-nla_put_failure:
- nla_nest_cancel(skb, field_attr);
- return -EMSGSIZE;
-}
-
-static int devlink_dpipe_header_put(struct sk_buff *skb,
- struct devlink_dpipe_header *header)
-{
- struct nlattr *fields_attr, *header_attr;
- int err;
-
- header_attr = nla_nest_start_noflag(skb, DEVLINK_ATTR_DPIPE_HEADER);
- if (!header_attr)
- return -EMSGSIZE;
-
- if (nla_put_string(skb, DEVLINK_ATTR_DPIPE_HEADER_NAME, header->name) ||
- nla_put_u32(skb, DEVLINK_ATTR_DPIPE_HEADER_ID, header->id) ||
- nla_put_u8(skb, DEVLINK_ATTR_DPIPE_HEADER_GLOBAL, header->global))
- goto nla_put_failure;
-
- fields_attr = nla_nest_start_noflag(skb,
- DEVLINK_ATTR_DPIPE_HEADER_FIELDS);
- if (!fields_attr)
- goto nla_put_failure;
-
- err = devlink_dpipe_fields_put(skb, header);
- if (err) {
- nla_nest_cancel(skb, fields_attr);
- goto nla_put_failure;
- }
- nla_nest_end(skb, fields_attr);
- nla_nest_end(skb, header_attr);
- return 0;
-
-nla_put_failure:
- err = -EMSGSIZE;
- nla_nest_cancel(skb, header_attr);
- return err;
-}
-
-static int devlink_dpipe_headers_fill(struct genl_info *info,
- enum devlink_command cmd, int flags,
- struct devlink_dpipe_headers *
- dpipe_headers)
-{
- struct devlink *devlink = info->user_ptr[0];
- struct nlattr *headers_attr;
- struct sk_buff *skb = NULL;
- struct nlmsghdr *nlh;
- void *hdr;
- int i, j;
- int err;
-
- i = 0;
-start_again:
- err = devlink_dpipe_send_and_alloc_skb(&skb, info);
- if (err)
- return err;
-
- hdr = genlmsg_put(skb, info->snd_portid, info->snd_seq,
- &devlink_nl_family, NLM_F_MULTI, cmd);
- if (!hdr) {
- nlmsg_free(skb);
- return -EMSGSIZE;
- }
-
- if (devlink_nl_put_handle(skb, devlink))
- goto nla_put_failure;
- headers_attr = nla_nest_start_noflag(skb, DEVLINK_ATTR_DPIPE_HEADERS);
- if (!headers_attr)
- goto nla_put_failure;
-
- j = 0;
- for (; i < dpipe_headers->headers_count; i++) {
- err = devlink_dpipe_header_put(skb, dpipe_headers->headers[i]);
- if (err) {
- if (!j)
- goto err_table_put;
- break;
- }
- j++;
- }
- nla_nest_end(skb, headers_attr);
- genlmsg_end(skb, hdr);
- if (i != dpipe_headers->headers_count)
- goto start_again;
-
-send_done:
- nlh = nlmsg_put(skb, info->snd_portid, info->snd_seq,
- NLMSG_DONE, 0, flags | NLM_F_MULTI);
- if (!nlh) {
- err = devlink_dpipe_send_and_alloc_skb(&skb, info);
- if (err)
- return err;
- goto send_done;
- }
- return genlmsg_reply(skb, info);
-
-nla_put_failure:
- err = -EMSGSIZE;
-err_table_put:
- nlmsg_free(skb);
- return err;
-}
-
-static int devlink_nl_cmd_dpipe_headers_get(struct sk_buff *skb,
- struct genl_info *info)
-{
- struct devlink *devlink = info->user_ptr[0];
-
- if (!devlink->dpipe_headers)
- return -EOPNOTSUPP;
- return devlink_dpipe_headers_fill(info, DEVLINK_CMD_DPIPE_HEADERS_GET,
- 0, devlink->dpipe_headers);
-}
-
-static int devlink_dpipe_table_counters_set(struct devlink *devlink,
- const char *table_name,
- bool enable)
-{
- struct devlink_dpipe_table *table;
-
- table = devlink_dpipe_table_find(&devlink->dpipe_table_list,
- table_name, devlink);
- if (!table)
- return -EINVAL;
-
- if (table->counter_control_extern)
- return -EOPNOTSUPP;
-
- if (!(table->counters_enabled ^ enable))
- return 0;
-
- table->counters_enabled = enable;
- if (table->table_ops->counters_set_update)
- table->table_ops->counters_set_update(table->priv, enable);
- return 0;
-}
-
-static int devlink_nl_cmd_dpipe_table_counters_set(struct sk_buff *skb,
- struct genl_info *info)
-{
- struct devlink *devlink = info->user_ptr[0];
- const char *table_name;
- bool counters_enable;
-
- if (GENL_REQ_ATTR_CHECK(info, DEVLINK_ATTR_DPIPE_TABLE_NAME) ||
- GENL_REQ_ATTR_CHECK(info,
- DEVLINK_ATTR_DPIPE_TABLE_COUNTERS_ENABLED))
- return -EINVAL;
-
- table_name = nla_data(info->attrs[DEVLINK_ATTR_DPIPE_TABLE_NAME]);
- counters_enable = !!nla_get_u8(info->attrs[DEVLINK_ATTR_DPIPE_TABLE_COUNTERS_ENABLED]);
-
- return devlink_dpipe_table_counters_set(devlink, table_name,
- counters_enable);
-}
-
-static struct devlink_resource *
-devlink_resource_find(struct devlink *devlink,
- struct devlink_resource *resource, u64 resource_id)
-{
- struct list_head *resource_list;
-
- if (resource)
- resource_list = &resource->resource_list;
- else
- resource_list = &devlink->resource_list;
-
- list_for_each_entry(resource, resource_list, list) {
- struct devlink_resource *child_resource;
-
- if (resource->id == resource_id)
- return resource;
-
- child_resource = devlink_resource_find(devlink, resource,
- resource_id);
- if (child_resource)
- return child_resource;
- }
- return NULL;
-}
-
-static void
-devlink_resource_validate_children(struct devlink_resource *resource)
-{
- struct devlink_resource *child_resource;
- bool size_valid = true;
- u64 parts_size = 0;
-
- if (list_empty(&resource->resource_list))
- goto out;
-
- list_for_each_entry(child_resource, &resource->resource_list, list)
- parts_size += child_resource->size_new;
-
- if (parts_size > resource->size_new)
- size_valid = false;
-out:
- resource->size_valid = size_valid;
-}
-
-static int
-devlink_resource_validate_size(struct devlink_resource *resource, u64 size,
- struct netlink_ext_ack *extack)
-{
- u64 reminder;
- int err = 0;
-
- if (size > resource->size_params.size_max) {
- NL_SET_ERR_MSG_MOD(extack, "Size larger than maximum");
- err = -EINVAL;
- }
-
- if (size < resource->size_params.size_min) {
- NL_SET_ERR_MSG_MOD(extack, "Size smaller than minimum");
- err = -EINVAL;
- }
-
- div64_u64_rem(size, resource->size_params.size_granularity, &reminder);
- if (reminder) {
- NL_SET_ERR_MSG_MOD(extack, "Wrong granularity");
- err = -EINVAL;
- }
-
- return err;
-}
-
-static int devlink_nl_cmd_resource_set(struct sk_buff *skb,
- struct genl_info *info)
-{
- struct devlink *devlink = info->user_ptr[0];
- struct devlink_resource *resource;
- u64 resource_id;
- u64 size;
- int err;
-
- if (GENL_REQ_ATTR_CHECK(info, DEVLINK_ATTR_RESOURCE_ID) ||
- GENL_REQ_ATTR_CHECK(info, DEVLINK_ATTR_RESOURCE_SIZE))
- return -EINVAL;
- resource_id = nla_get_u64(info->attrs[DEVLINK_ATTR_RESOURCE_ID]);
-
- resource = devlink_resource_find(devlink, NULL, resource_id);
- if (!resource)
- return -EINVAL;
-
- size = nla_get_u64(info->attrs[DEVLINK_ATTR_RESOURCE_SIZE]);
- err = devlink_resource_validate_size(resource, size, info->extack);
- if (err)
- return err;
-
- resource->size_new = size;
- devlink_resource_validate_children(resource);
- if (resource->parent)
- devlink_resource_validate_children(resource->parent);
- return 0;
-}
-
-static int
-devlink_resource_size_params_put(struct devlink_resource *resource,
- struct sk_buff *skb)
-{
- struct devlink_resource_size_params *size_params;
-
- size_params = &resource->size_params;
- if (nla_put_u64_64bit(skb, DEVLINK_ATTR_RESOURCE_SIZE_GRAN,
- size_params->size_granularity, DEVLINK_ATTR_PAD) ||
- nla_put_u64_64bit(skb, DEVLINK_ATTR_RESOURCE_SIZE_MAX,
- size_params->size_max, DEVLINK_ATTR_PAD) ||
- nla_put_u64_64bit(skb, DEVLINK_ATTR_RESOURCE_SIZE_MIN,
- size_params->size_min, DEVLINK_ATTR_PAD) ||
- nla_put_u8(skb, DEVLINK_ATTR_RESOURCE_UNIT, size_params->unit))
- return -EMSGSIZE;
- return 0;
-}
-
-static int devlink_resource_occ_put(struct devlink_resource *resource,
- struct sk_buff *skb)
-{
- if (!resource->occ_get)
- return 0;
- return nla_put_u64_64bit(skb, DEVLINK_ATTR_RESOURCE_OCC,
- resource->occ_get(resource->occ_get_priv),
- DEVLINK_ATTR_PAD);
-}
-
-static int devlink_resource_put(struct devlink *devlink, struct sk_buff *skb,
- struct devlink_resource *resource)
-{
- struct devlink_resource *child_resource;
- struct nlattr *child_resource_attr;
- struct nlattr *resource_attr;
-
- resource_attr = nla_nest_start_noflag(skb, DEVLINK_ATTR_RESOURCE);
- if (!resource_attr)
- return -EMSGSIZE;
-
- if (nla_put_string(skb, DEVLINK_ATTR_RESOURCE_NAME, resource->name) ||
- nla_put_u64_64bit(skb, DEVLINK_ATTR_RESOURCE_SIZE, resource->size,
- DEVLINK_ATTR_PAD) ||
- nla_put_u64_64bit(skb, DEVLINK_ATTR_RESOURCE_ID, resource->id,
- DEVLINK_ATTR_PAD))
- goto nla_put_failure;
- if (resource->size != resource->size_new)
- nla_put_u64_64bit(skb, DEVLINK_ATTR_RESOURCE_SIZE_NEW,
- resource->size_new, DEVLINK_ATTR_PAD);
- if (devlink_resource_occ_put(resource, skb))
- goto nla_put_failure;
- if (devlink_resource_size_params_put(resource, skb))
- goto nla_put_failure;
- if (list_empty(&resource->resource_list))
- goto out;
-
- if (nla_put_u8(skb, DEVLINK_ATTR_RESOURCE_SIZE_VALID,
- resource->size_valid))
- goto nla_put_failure;
-
- child_resource_attr = nla_nest_start_noflag(skb,
- DEVLINK_ATTR_RESOURCE_LIST);
- if (!child_resource_attr)
- goto nla_put_failure;
-
- list_for_each_entry(child_resource, &resource->resource_list, list) {
- if (devlink_resource_put(devlink, skb, child_resource))
- goto resource_put_failure;
- }
-
- nla_nest_end(skb, child_resource_attr);
-out:
- nla_nest_end(skb, resource_attr);
- return 0;
-
-resource_put_failure:
- nla_nest_cancel(skb, child_resource_attr);
-nla_put_failure:
- nla_nest_cancel(skb, resource_attr);
- return -EMSGSIZE;
-}
-
-static int devlink_resource_fill(struct genl_info *info,
- enum devlink_command cmd, int flags)
-{
- struct devlink *devlink = info->user_ptr[0];
- struct devlink_resource *resource;
- struct nlattr *resources_attr;
- struct sk_buff *skb = NULL;
- struct nlmsghdr *nlh;
- bool incomplete;
- void *hdr;
- int i;
- int err;
-
- resource = list_first_entry(&devlink->resource_list,
- struct devlink_resource, list);
-start_again:
- err = devlink_dpipe_send_and_alloc_skb(&skb, info);
- if (err)
- return err;
-
- hdr = genlmsg_put(skb, info->snd_portid, info->snd_seq,
- &devlink_nl_family, NLM_F_MULTI, cmd);
- if (!hdr) {
- nlmsg_free(skb);
- return -EMSGSIZE;
- }
-
- if (devlink_nl_put_handle(skb, devlink))
- goto nla_put_failure;
-
- resources_attr = nla_nest_start_noflag(skb,
- DEVLINK_ATTR_RESOURCE_LIST);
- if (!resources_attr)
- goto nla_put_failure;
-
- incomplete = false;
- i = 0;
- list_for_each_entry_from(resource, &devlink->resource_list, list) {
- err = devlink_resource_put(devlink, skb, resource);
- if (err) {
- if (!i)
- goto err_resource_put;
- incomplete = true;
- break;
- }
- i++;
- }
- nla_nest_end(skb, resources_attr);
- genlmsg_end(skb, hdr);
- if (incomplete)
- goto start_again;
-send_done:
- nlh = nlmsg_put(skb, info->snd_portid, info->snd_seq,
- NLMSG_DONE, 0, flags | NLM_F_MULTI);
- if (!nlh) {
- err = devlink_dpipe_send_and_alloc_skb(&skb, info);
- if (err)
- return err;
- goto send_done;
- }
- return genlmsg_reply(skb, info);
-
-nla_put_failure:
- err = -EMSGSIZE;
-err_resource_put:
- nlmsg_free(skb);
- return err;
-}
-
-static int devlink_nl_cmd_resource_dump(struct sk_buff *skb,
- struct genl_info *info)
-{
- struct devlink *devlink = info->user_ptr[0];
-
- if (list_empty(&devlink->resource_list))
- return -EOPNOTSUPP;
-
- return devlink_resource_fill(info, DEVLINK_CMD_RESOURCE_DUMP, 0);
-}
-
-static int
-devlink_resources_validate(struct devlink *devlink,
- struct devlink_resource *resource,
- struct genl_info *info)
-{
- struct list_head *resource_list;
- int err = 0;
-
- if (resource)
- resource_list = &resource->resource_list;
- else
- resource_list = &devlink->resource_list;
-
- list_for_each_entry(resource, resource_list, list) {
- if (!resource->size_valid)
- return -EINVAL;
- err = devlink_resources_validate(devlink, resource, info);
- if (err)
- return err;
- }
- return err;
-}
-
-static struct net *devlink_netns_get(struct sk_buff *skb,
- struct genl_info *info)
-{
- struct nlattr *netns_pid_attr = info->attrs[DEVLINK_ATTR_NETNS_PID];
- struct nlattr *netns_fd_attr = info->attrs[DEVLINK_ATTR_NETNS_FD];
- struct nlattr *netns_id_attr = info->attrs[DEVLINK_ATTR_NETNS_ID];
- struct net *net;
-
- if (!!netns_pid_attr + !!netns_fd_attr + !!netns_id_attr > 1) {
- NL_SET_ERR_MSG_MOD(info->extack, "multiple netns identifying attributes specified");
- return ERR_PTR(-EINVAL);
- }
-
- if (netns_pid_attr) {
- net = get_net_ns_by_pid(nla_get_u32(netns_pid_attr));
- } else if (netns_fd_attr) {
- net = get_net_ns_by_fd(nla_get_u32(netns_fd_attr));
- } else if (netns_id_attr) {
- net = get_net_ns_by_id(sock_net(skb->sk),
- nla_get_u32(netns_id_attr));
- if (!net)
- net = ERR_PTR(-EINVAL);
- } else {
- WARN_ON(1);
- net = ERR_PTR(-EINVAL);
- }
- if (IS_ERR(net)) {
- NL_SET_ERR_MSG_MOD(info->extack, "Unknown network namespace");
- return ERR_PTR(-EINVAL);
- }
- if (!netlink_ns_capable(skb, net->user_ns, CAP_NET_ADMIN)) {
- put_net(net);
- return ERR_PTR(-EPERM);
- }
- return net;
-}
-
-static void devlink_param_notify(struct devlink *devlink,
- unsigned int port_index,
- struct devlink_param_item *param_item,
- enum devlink_command cmd);
-
-static void devlink_ns_change_notify(struct devlink *devlink,
- struct net *dest_net, struct net *curr_net,
- bool new)
-{
- struct devlink_param_item *param_item;
- enum devlink_command cmd;
-
- /* Userspace needs to be notified about devlink objects
- * removed from original and entering new network namespace.
- * The rest of the devlink objects are re-created during
- * reload process so the notifications are generated separatelly.
- */
-
- if (!dest_net || net_eq(dest_net, curr_net))
- return;
-
- if (new)
- devlink_notify(devlink, DEVLINK_CMD_NEW);
-
- cmd = new ? DEVLINK_CMD_PARAM_NEW : DEVLINK_CMD_PARAM_DEL;
- list_for_each_entry(param_item, &devlink->param_list, list)
- devlink_param_notify(devlink, 0, param_item, cmd);
-
- if (!new)
- devlink_notify(devlink, DEVLINK_CMD_DEL);
-}
-
-static bool devlink_reload_supported(const struct devlink_ops *ops)
-{
- return ops->reload_down && ops->reload_up;
-}
-
-static void devlink_reload_failed_set(struct devlink *devlink,
- bool reload_failed)
-{
- if (devlink->reload_failed == reload_failed)
- return;
- devlink->reload_failed = reload_failed;
- devlink_notify(devlink, DEVLINK_CMD_NEW);
-}
-
-bool devlink_is_reload_failed(const struct devlink *devlink)
-{
- return devlink->reload_failed;
-}
-EXPORT_SYMBOL_GPL(devlink_is_reload_failed);
-
-static void
-__devlink_reload_stats_update(struct devlink *devlink, u32 *reload_stats,
- enum devlink_reload_limit limit, u32 actions_performed)
-{
- unsigned long actions = actions_performed;
- int stat_idx;
- int action;
-
- for_each_set_bit(action, &actions, __DEVLINK_RELOAD_ACTION_MAX) {
- stat_idx = limit * __DEVLINK_RELOAD_ACTION_MAX + action;
- reload_stats[stat_idx]++;
- }
- devlink_notify(devlink, DEVLINK_CMD_NEW);
-}
-
-static void
-devlink_reload_stats_update(struct devlink *devlink, enum devlink_reload_limit limit,
- u32 actions_performed)
-{
- __devlink_reload_stats_update(devlink, devlink->stats.reload_stats, limit,
- actions_performed);
-}
-
-/**
- * devlink_remote_reload_actions_performed - Update devlink on reload actions
- * performed which are not a direct result of devlink reload call.
- *
- * This should be called by a driver after performing reload actions in case it was not
- * a result of devlink reload call. For example fw_activate was performed as a result
- * of devlink reload triggered fw_activate on another host.
- * The motivation for this function is to keep data on reload actions performed on this
- * function whether it was done due to direct devlink reload call or not.
- *
- * @devlink: devlink
- * @limit: reload limit
- * @actions_performed: bitmask of actions performed
- */
-void devlink_remote_reload_actions_performed(struct devlink *devlink,
- enum devlink_reload_limit limit,
- u32 actions_performed)
-{
- if (WARN_ON(!actions_performed ||
- actions_performed & BIT(DEVLINK_RELOAD_ACTION_UNSPEC) ||
- actions_performed >= BIT(__DEVLINK_RELOAD_ACTION_MAX) ||
- limit > DEVLINK_RELOAD_LIMIT_MAX))
- return;
-
- __devlink_reload_stats_update(devlink, devlink->stats.remote_reload_stats, limit,
- actions_performed);
-}
-EXPORT_SYMBOL_GPL(devlink_remote_reload_actions_performed);
-
-static int devlink_reload(struct devlink *devlink, struct net *dest_net,
- enum devlink_reload_action action, enum devlink_reload_limit limit,
- u32 *actions_performed, struct netlink_ext_ack *extack)
-{
- u32 remote_reload_stats[DEVLINK_RELOAD_STATS_ARRAY_SIZE];
- struct net *curr_net;
- int err;
-
- memcpy(remote_reload_stats, devlink->stats.remote_reload_stats,
- sizeof(remote_reload_stats));
-
- curr_net = devlink_net(devlink);
- devlink_ns_change_notify(devlink, dest_net, curr_net, false);
- err = devlink->ops->reload_down(devlink, !!dest_net, action, limit, extack);
- if (err)
- return err;
-
- if (dest_net && !net_eq(dest_net, curr_net))
- write_pnet(&devlink->_net, dest_net);
-
- err = devlink->ops->reload_up(devlink, action, limit, actions_performed, extack);
- devlink_reload_failed_set(devlink, !!err);
- if (err)
- return err;
-
- devlink_ns_change_notify(devlink, dest_net, curr_net, true);
- WARN_ON(!(*actions_performed & BIT(action)));
- /* Catch driver on updating the remote action within devlink reload */
- WARN_ON(memcmp(remote_reload_stats, devlink->stats.remote_reload_stats,
- sizeof(remote_reload_stats)));
- devlink_reload_stats_update(devlink, limit, *actions_performed);
- return 0;
-}
-
-static int
-devlink_nl_reload_actions_performed_snd(struct devlink *devlink, u32 actions_performed,
- enum devlink_command cmd, struct genl_info *info)
-{
- struct sk_buff *msg;
- void *hdr;
-
- msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
- if (!msg)
- return -ENOMEM;
-
- hdr = genlmsg_put(msg, info->snd_portid, info->snd_seq, &devlink_nl_family, 0, cmd);
- if (!hdr)
- goto free_msg;
-
- if (devlink_nl_put_handle(msg, devlink))
- goto nla_put_failure;
-
- if (nla_put_bitfield32(msg, DEVLINK_ATTR_RELOAD_ACTIONS_PERFORMED, actions_performed,
- actions_performed))
- goto nla_put_failure;
- genlmsg_end(msg, hdr);
-
- return genlmsg_reply(msg, info);
-
-nla_put_failure:
- genlmsg_cancel(msg, hdr);
-free_msg:
- nlmsg_free(msg);
- return -EMSGSIZE;
-}
-
-static int devlink_nl_cmd_reload(struct sk_buff *skb, struct genl_info *info)
-{
- struct devlink *devlink = info->user_ptr[0];
- enum devlink_reload_action action;
- enum devlink_reload_limit limit;
- struct net *dest_net = NULL;
- u32 actions_performed;
- int err;
-
- if (!(devlink->features & DEVLINK_F_RELOAD))
- return -EOPNOTSUPP;
-
- err = devlink_resources_validate(devlink, NULL, info);
- if (err) {
- NL_SET_ERR_MSG_MOD(info->extack, "resources size validation failed");
- return err;
- }
-
- if (info->attrs[DEVLINK_ATTR_RELOAD_ACTION])
- action = nla_get_u8(info->attrs[DEVLINK_ATTR_RELOAD_ACTION]);
- else
- action = DEVLINK_RELOAD_ACTION_DRIVER_REINIT;
-
- if (!devlink_reload_action_is_supported(devlink, action)) {
- NL_SET_ERR_MSG_MOD(info->extack,
- "Requested reload action is not supported by the driver");
- return -EOPNOTSUPP;
- }
-
- limit = DEVLINK_RELOAD_LIMIT_UNSPEC;
- if (info->attrs[DEVLINK_ATTR_RELOAD_LIMITS]) {
- struct nla_bitfield32 limits;
- u32 limits_selected;
-
- limits = nla_get_bitfield32(info->attrs[DEVLINK_ATTR_RELOAD_LIMITS]);
- limits_selected = limits.value & limits.selector;
- if (!limits_selected) {
- NL_SET_ERR_MSG_MOD(info->extack, "Invalid limit selected");
- return -EINVAL;
- }
- for (limit = 0 ; limit <= DEVLINK_RELOAD_LIMIT_MAX ; limit++)
- if (limits_selected & BIT(limit))
- break;
- /* UAPI enables multiselection, but currently it is not used */
- if (limits_selected != BIT(limit)) {
- NL_SET_ERR_MSG_MOD(info->extack,
- "Multiselection of limit is not supported");
- return -EOPNOTSUPP;
- }
- if (!devlink_reload_limit_is_supported(devlink, limit)) {
- NL_SET_ERR_MSG_MOD(info->extack,
- "Requested limit is not supported by the driver");
- return -EOPNOTSUPP;
- }
- if (devlink_reload_combination_is_invalid(action, limit)) {
- NL_SET_ERR_MSG_MOD(info->extack,
- "Requested limit is invalid for this action");
- return -EINVAL;
- }
- }
- if (info->attrs[DEVLINK_ATTR_NETNS_PID] ||
- info->attrs[DEVLINK_ATTR_NETNS_FD] ||
- info->attrs[DEVLINK_ATTR_NETNS_ID]) {
- dest_net = devlink_netns_get(skb, info);
- if (IS_ERR(dest_net))
- return PTR_ERR(dest_net);
- }
-
- err = devlink_reload(devlink, dest_net, action, limit, &actions_performed, info->extack);
-
- if (dest_net)
- put_net(dest_net);
-
- if (err)
- return err;
- /* For backward compatibility generate reply only if attributes used by user */
- if (!info->attrs[DEVLINK_ATTR_RELOAD_ACTION] && !info->attrs[DEVLINK_ATTR_RELOAD_LIMITS])
- return 0;
-
- return devlink_nl_reload_actions_performed_snd(devlink, actions_performed,
- DEVLINK_CMD_RELOAD, info);
-}
-
-static int devlink_nl_flash_update_fill(struct sk_buff *msg,
- struct devlink *devlink,
- enum devlink_command cmd,
- struct devlink_flash_notify *params)
-{
- void *hdr;
-
- hdr = genlmsg_put(msg, 0, 0, &devlink_nl_family, 0, cmd);
- if (!hdr)
- return -EMSGSIZE;
-
- if (devlink_nl_put_handle(msg, devlink))
- goto nla_put_failure;
-
- if (cmd != DEVLINK_CMD_FLASH_UPDATE_STATUS)
- goto out;
-
- if (params->status_msg &&
- nla_put_string(msg, DEVLINK_ATTR_FLASH_UPDATE_STATUS_MSG,
- params->status_msg))
- goto nla_put_failure;
- if (params->component &&
- nla_put_string(msg, DEVLINK_ATTR_FLASH_UPDATE_COMPONENT,
- params->component))
- goto nla_put_failure;
- if (nla_put_u64_64bit(msg, DEVLINK_ATTR_FLASH_UPDATE_STATUS_DONE,
- params->done, DEVLINK_ATTR_PAD))
- goto nla_put_failure;
- if (nla_put_u64_64bit(msg, DEVLINK_ATTR_FLASH_UPDATE_STATUS_TOTAL,
- params->total, DEVLINK_ATTR_PAD))
- goto nla_put_failure;
- if (nla_put_u64_64bit(msg, DEVLINK_ATTR_FLASH_UPDATE_STATUS_TIMEOUT,
- params->timeout, DEVLINK_ATTR_PAD))
- goto nla_put_failure;
-
-out:
- genlmsg_end(msg, hdr);
- return 0;
-
-nla_put_failure:
- genlmsg_cancel(msg, hdr);
- return -EMSGSIZE;
-}
-
-static void __devlink_flash_update_notify(struct devlink *devlink,
- enum devlink_command cmd,
- struct devlink_flash_notify *params)
-{
- struct sk_buff *msg;
- int err;
-
- WARN_ON(cmd != DEVLINK_CMD_FLASH_UPDATE &&
- cmd != DEVLINK_CMD_FLASH_UPDATE_END &&
- cmd != DEVLINK_CMD_FLASH_UPDATE_STATUS);
-
- if (!xa_get_mark(&devlinks, devlink->index, DEVLINK_REGISTERED))
- return;
-
- msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
- if (!msg)
- return;
-
- err = devlink_nl_flash_update_fill(msg, devlink, cmd, params);
- if (err)
- goto out_free_msg;
-
- genlmsg_multicast_netns(&devlink_nl_family, devlink_net(devlink),
- msg, 0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL);
- return;
-
-out_free_msg:
- nlmsg_free(msg);
-}
-
-static void devlink_flash_update_begin_notify(struct devlink *devlink)
-{
- struct devlink_flash_notify params = {};
-
- __devlink_flash_update_notify(devlink,
- DEVLINK_CMD_FLASH_UPDATE,
- &params);
-}
-
-static void devlink_flash_update_end_notify(struct devlink *devlink)
-{
- struct devlink_flash_notify params = {};
-
- __devlink_flash_update_notify(devlink,
- DEVLINK_CMD_FLASH_UPDATE_END,
- &params);
-}
-
-void devlink_flash_update_status_notify(struct devlink *devlink,
- const char *status_msg,
- const char *component,
- unsigned long done,
- unsigned long total)
-{
- struct devlink_flash_notify params = {
- .status_msg = status_msg,
- .component = component,
- .done = done,
- .total = total,
- };
-
- __devlink_flash_update_notify(devlink,
- DEVLINK_CMD_FLASH_UPDATE_STATUS,
- &params);
-}
-EXPORT_SYMBOL_GPL(devlink_flash_update_status_notify);
-
-void devlink_flash_update_timeout_notify(struct devlink *devlink,
- const char *status_msg,
- const char *component,
- unsigned long timeout)
-{
- struct devlink_flash_notify params = {
- .status_msg = status_msg,
- .component = component,
- .timeout = timeout,
- };
-
- __devlink_flash_update_notify(devlink,
- DEVLINK_CMD_FLASH_UPDATE_STATUS,
- &params);
-}
-EXPORT_SYMBOL_GPL(devlink_flash_update_timeout_notify);
-
-struct devlink_info_req {
- struct sk_buff *msg;
- void (*version_cb)(const char *version_name,
- enum devlink_info_version_type version_type,
- void *version_cb_priv);
- void *version_cb_priv;
-};
-
-struct devlink_flash_component_lookup_ctx {
- const char *lookup_name;
- bool lookup_name_found;
-};
-
-static void
-devlink_flash_component_lookup_cb(const char *version_name,
- enum devlink_info_version_type version_type,
- void *version_cb_priv)
-{
- struct devlink_flash_component_lookup_ctx *lookup_ctx = version_cb_priv;
-
- if (version_type != DEVLINK_INFO_VERSION_TYPE_COMPONENT ||
- lookup_ctx->lookup_name_found)
- return;
-
- lookup_ctx->lookup_name_found =
- !strcmp(lookup_ctx->lookup_name, version_name);
-}
-
-static int devlink_flash_component_get(struct devlink *devlink,
- struct nlattr *nla_component,
- const char **p_component,
- struct netlink_ext_ack *extack)
-{
- struct devlink_flash_component_lookup_ctx lookup_ctx = {};
- struct devlink_info_req req = {};
- const char *component;
- int ret;
-
- if (!nla_component)
- return 0;
-
- component = nla_data(nla_component);
-
- if (!devlink->ops->info_get) {
- NL_SET_ERR_MSG_ATTR(extack, nla_component,
- "component update is not supported by this device");
- return -EOPNOTSUPP;
- }
-
- lookup_ctx.lookup_name = component;
- req.version_cb = devlink_flash_component_lookup_cb;
- req.version_cb_priv = &lookup_ctx;
-
- ret = devlink->ops->info_get(devlink, &req, NULL);
- if (ret)
- return ret;
-
- if (!lookup_ctx.lookup_name_found) {
- NL_SET_ERR_MSG_ATTR(extack, nla_component,
- "selected component is not supported by this device");
- return -EINVAL;
- }
- *p_component = component;
- return 0;
-}
-
-static int devlink_nl_cmd_flash_update(struct sk_buff *skb,
- struct genl_info *info)
-{
- struct nlattr *nla_overwrite_mask, *nla_file_name;
- struct devlink_flash_update_params params = {};
- struct devlink *devlink = info->user_ptr[0];
- const char *file_name;
- u32 supported_params;
- int ret;
-
- if (!devlink->ops->flash_update)
- return -EOPNOTSUPP;
-
- if (GENL_REQ_ATTR_CHECK(info, DEVLINK_ATTR_FLASH_UPDATE_FILE_NAME))
- return -EINVAL;
-
- ret = devlink_flash_component_get(devlink,
- info->attrs[DEVLINK_ATTR_FLASH_UPDATE_COMPONENT],
- &params.component, info->extack);
- if (ret)
- return ret;
-
- supported_params = devlink->ops->supported_flash_update_params;
-
- nla_overwrite_mask = info->attrs[DEVLINK_ATTR_FLASH_UPDATE_OVERWRITE_MASK];
- if (nla_overwrite_mask) {
- struct nla_bitfield32 sections;
-
- if (!(supported_params & DEVLINK_SUPPORT_FLASH_UPDATE_OVERWRITE_MASK)) {
- NL_SET_ERR_MSG_ATTR(info->extack, nla_overwrite_mask,
- "overwrite settings are not supported by this device");
- return -EOPNOTSUPP;
- }
- sections = nla_get_bitfield32(nla_overwrite_mask);
- params.overwrite_mask = sections.value & sections.selector;
- }
-
- nla_file_name = info->attrs[DEVLINK_ATTR_FLASH_UPDATE_FILE_NAME];
- file_name = nla_data(nla_file_name);
- ret = request_firmware(&params.fw, file_name, devlink->dev);
- if (ret) {
- NL_SET_ERR_MSG_ATTR(info->extack, nla_file_name, "failed to locate the requested firmware file");
- return ret;
- }
-
- devlink_flash_update_begin_notify(devlink);
- ret = devlink->ops->flash_update(devlink, &params, info->extack);
- devlink_flash_update_end_notify(devlink);
-
- release_firmware(params.fw);
-
- return ret;
-}
-
-static int
-devlink_nl_selftests_fill(struct sk_buff *msg, struct devlink *devlink,
- u32 portid, u32 seq, int flags,
- struct netlink_ext_ack *extack)
-{
- struct nlattr *selftests;
- void *hdr;
- int err;
- int i;
-
- hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags,
- DEVLINK_CMD_SELFTESTS_GET);
- if (!hdr)
- return -EMSGSIZE;
-
- err = -EMSGSIZE;
- if (devlink_nl_put_handle(msg, devlink))
- goto err_cancel_msg;
-
- selftests = nla_nest_start(msg, DEVLINK_ATTR_SELFTESTS);
- if (!selftests)
- goto err_cancel_msg;
-
- for (i = DEVLINK_ATTR_SELFTEST_ID_UNSPEC + 1;
- i <= DEVLINK_ATTR_SELFTEST_ID_MAX; i++) {
- if (devlink->ops->selftest_check(devlink, i, extack)) {
- err = nla_put_flag(msg, i);
- if (err)
- goto err_cancel_msg;
- }
- }
-
- nla_nest_end(msg, selftests);
- genlmsg_end(msg, hdr);
- return 0;
-
-err_cancel_msg:
- genlmsg_cancel(msg, hdr);
- return err;
-}
-
-static int devlink_nl_cmd_selftests_get_doit(struct sk_buff *skb,
- struct genl_info *info)
-{
- struct devlink *devlink = info->user_ptr[0];
- struct sk_buff *msg;
- int err;
-
- if (!devlink->ops->selftest_check)
- return -EOPNOTSUPP;
-
- msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
- if (!msg)
- return -ENOMEM;
-
- err = devlink_nl_selftests_fill(msg, devlink, info->snd_portid,
- info->snd_seq, 0, info->extack);
- if (err) {
- nlmsg_free(msg);
- return err;
- }
-
- return genlmsg_reply(msg, info);
-}
-
-static int devlink_nl_cmd_selftests_get_dumpit(struct sk_buff *msg,
- struct netlink_callback *cb)
-{
- struct devlink *devlink;
- int start = cb->args[0];
- unsigned long index;
- int idx = 0;
- int err = 0;
-
- devlinks_xa_for_each_registered_get(sock_net(msg->sk), index, devlink) {
- if (idx < start || !devlink->ops->selftest_check)
- goto inc;
-
- devl_lock(devlink);
- err = devlink_nl_selftests_fill(msg, devlink,
- NETLINK_CB(cb->skb).portid,
- cb->nlh->nlmsg_seq, NLM_F_MULTI,
- cb->extack);
- devl_unlock(devlink);
- if (err) {
- devlink_put(devlink);
- break;
- }
-inc:
- idx++;
- devlink_put(devlink);
- }
-
- if (err != -EMSGSIZE)
- return err;
-
- cb->args[0] = idx;
- return msg->len;
-}
-
-static int devlink_selftest_result_put(struct sk_buff *skb, unsigned int id,
- enum devlink_selftest_status test_status)
-{
- struct nlattr *result_attr;
-
- result_attr = nla_nest_start(skb, DEVLINK_ATTR_SELFTEST_RESULT);
- if (!result_attr)
- return -EMSGSIZE;
-
- if (nla_put_u32(skb, DEVLINK_ATTR_SELFTEST_RESULT_ID, id) ||
- nla_put_u8(skb, DEVLINK_ATTR_SELFTEST_RESULT_STATUS,
- test_status))
- goto nla_put_failure;
-
- nla_nest_end(skb, result_attr);
- return 0;
-
-nla_put_failure:
- nla_nest_cancel(skb, result_attr);
- return -EMSGSIZE;
-}
-
-static int devlink_nl_cmd_selftests_run(struct sk_buff *skb,
- struct genl_info *info)
-{
- struct nlattr *tb[DEVLINK_ATTR_SELFTEST_ID_MAX + 1];
- struct devlink *devlink = info->user_ptr[0];
- struct nlattr *attrs, *selftests;
- struct sk_buff *msg;
- void *hdr;
- int err;
- int i;
-
- if (!devlink->ops->selftest_run || !devlink->ops->selftest_check)
- return -EOPNOTSUPP;
-
- if (GENL_REQ_ATTR_CHECK(info, DEVLINK_ATTR_SELFTESTS))
- return -EINVAL;
-
- attrs = info->attrs[DEVLINK_ATTR_SELFTESTS];
-
- err = nla_parse_nested(tb, DEVLINK_ATTR_SELFTEST_ID_MAX, attrs,
- devlink_selftest_nl_policy, info->extack);
- if (err < 0)
- return err;
-
- msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
- if (!msg)
- return -ENOMEM;
-
- err = -EMSGSIZE;
- hdr = genlmsg_put(msg, info->snd_portid, info->snd_seq,
- &devlink_nl_family, 0, DEVLINK_CMD_SELFTESTS_RUN);
- if (!hdr)
- goto free_msg;
-
- if (devlink_nl_put_handle(msg, devlink))
- goto genlmsg_cancel;
-
- selftests = nla_nest_start(msg, DEVLINK_ATTR_SELFTESTS);
- if (!selftests)
- goto genlmsg_cancel;
-
- for (i = DEVLINK_ATTR_SELFTEST_ID_UNSPEC + 1;
- i <= DEVLINK_ATTR_SELFTEST_ID_MAX; i++) {
- enum devlink_selftest_status test_status;
-
- if (nla_get_flag(tb[i])) {
- if (!devlink->ops->selftest_check(devlink, i,
- info->extack)) {
- if (devlink_selftest_result_put(msg, i,
- DEVLINK_SELFTEST_STATUS_SKIP))
- goto selftests_nest_cancel;
- continue;
- }
-
- test_status = devlink->ops->selftest_run(devlink, i,
- info->extack);
- if (devlink_selftest_result_put(msg, i, test_status))
- goto selftests_nest_cancel;
- }
- }
-
- nla_nest_end(msg, selftests);
- genlmsg_end(msg, hdr);
- return genlmsg_reply(msg, info);
-
-selftests_nest_cancel:
- nla_nest_cancel(msg, selftests);
-genlmsg_cancel:
- genlmsg_cancel(msg, hdr);
-free_msg:
- nlmsg_free(msg);
- return err;
-}
-
-static const struct devlink_param devlink_param_generic[] = {
- {
- .id = DEVLINK_PARAM_GENERIC_ID_INT_ERR_RESET,
- .name = DEVLINK_PARAM_GENERIC_INT_ERR_RESET_NAME,
- .type = DEVLINK_PARAM_GENERIC_INT_ERR_RESET_TYPE,
- },
- {
- .id = DEVLINK_PARAM_GENERIC_ID_MAX_MACS,
- .name = DEVLINK_PARAM_GENERIC_MAX_MACS_NAME,
- .type = DEVLINK_PARAM_GENERIC_MAX_MACS_TYPE,
- },
- {
- .id = DEVLINK_PARAM_GENERIC_ID_ENABLE_SRIOV,
- .name = DEVLINK_PARAM_GENERIC_ENABLE_SRIOV_NAME,
- .type = DEVLINK_PARAM_GENERIC_ENABLE_SRIOV_TYPE,
- },
- {
- .id = DEVLINK_PARAM_GENERIC_ID_REGION_SNAPSHOT,
- .name = DEVLINK_PARAM_GENERIC_REGION_SNAPSHOT_NAME,
- .type = DEVLINK_PARAM_GENERIC_REGION_SNAPSHOT_TYPE,
- },
- {
- .id = DEVLINK_PARAM_GENERIC_ID_IGNORE_ARI,
- .name = DEVLINK_PARAM_GENERIC_IGNORE_ARI_NAME,
- .type = DEVLINK_PARAM_GENERIC_IGNORE_ARI_TYPE,
- },
- {
- .id = DEVLINK_PARAM_GENERIC_ID_MSIX_VEC_PER_PF_MAX,
- .name = DEVLINK_PARAM_GENERIC_MSIX_VEC_PER_PF_MAX_NAME,
- .type = DEVLINK_PARAM_GENERIC_MSIX_VEC_PER_PF_MAX_TYPE,
- },
- {
- .id = DEVLINK_PARAM_GENERIC_ID_MSIX_VEC_PER_PF_MIN,
- .name = DEVLINK_PARAM_GENERIC_MSIX_VEC_PER_PF_MIN_NAME,
- .type = DEVLINK_PARAM_GENERIC_MSIX_VEC_PER_PF_MIN_TYPE,
- },
- {
- .id = DEVLINK_PARAM_GENERIC_ID_FW_LOAD_POLICY,
- .name = DEVLINK_PARAM_GENERIC_FW_LOAD_POLICY_NAME,
- .type = DEVLINK_PARAM_GENERIC_FW_LOAD_POLICY_TYPE,
- },
- {
- .id = DEVLINK_PARAM_GENERIC_ID_RESET_DEV_ON_DRV_PROBE,
- .name = DEVLINK_PARAM_GENERIC_RESET_DEV_ON_DRV_PROBE_NAME,
- .type = DEVLINK_PARAM_GENERIC_RESET_DEV_ON_DRV_PROBE_TYPE,
- },
- {
- .id = DEVLINK_PARAM_GENERIC_ID_ENABLE_ROCE,
- .name = DEVLINK_PARAM_GENERIC_ENABLE_ROCE_NAME,
- .type = DEVLINK_PARAM_GENERIC_ENABLE_ROCE_TYPE,
- },
- {
- .id = DEVLINK_PARAM_GENERIC_ID_ENABLE_REMOTE_DEV_RESET,
- .name = DEVLINK_PARAM_GENERIC_ENABLE_REMOTE_DEV_RESET_NAME,
- .type = DEVLINK_PARAM_GENERIC_ENABLE_REMOTE_DEV_RESET_TYPE,
- },
- {
- .id = DEVLINK_PARAM_GENERIC_ID_ENABLE_ETH,
- .name = DEVLINK_PARAM_GENERIC_ENABLE_ETH_NAME,
- .type = DEVLINK_PARAM_GENERIC_ENABLE_ETH_TYPE,
- },
- {
- .id = DEVLINK_PARAM_GENERIC_ID_ENABLE_RDMA,
- .name = DEVLINK_PARAM_GENERIC_ENABLE_RDMA_NAME,
- .type = DEVLINK_PARAM_GENERIC_ENABLE_RDMA_TYPE,
- },
- {
- .id = DEVLINK_PARAM_GENERIC_ID_ENABLE_VNET,
- .name = DEVLINK_PARAM_GENERIC_ENABLE_VNET_NAME,
- .type = DEVLINK_PARAM_GENERIC_ENABLE_VNET_TYPE,
- },
- {
- .id = DEVLINK_PARAM_GENERIC_ID_ENABLE_IWARP,
- .name = DEVLINK_PARAM_GENERIC_ENABLE_IWARP_NAME,
- .type = DEVLINK_PARAM_GENERIC_ENABLE_IWARP_TYPE,
- },
- {
- .id = DEVLINK_PARAM_GENERIC_ID_IO_EQ_SIZE,
- .name = DEVLINK_PARAM_GENERIC_IO_EQ_SIZE_NAME,
- .type = DEVLINK_PARAM_GENERIC_IO_EQ_SIZE_TYPE,
- },
- {
- .id = DEVLINK_PARAM_GENERIC_ID_EVENT_EQ_SIZE,
- .name = DEVLINK_PARAM_GENERIC_EVENT_EQ_SIZE_NAME,
- .type = DEVLINK_PARAM_GENERIC_EVENT_EQ_SIZE_TYPE,
- },
-};
-
-static int devlink_param_generic_verify(const struct devlink_param *param)
-{
- /* verify it match generic parameter by id and name */
- if (param->id > DEVLINK_PARAM_GENERIC_ID_MAX)
- return -EINVAL;
- if (strcmp(param->name, devlink_param_generic[param->id].name))
- return -ENOENT;
-
- WARN_ON(param->type != devlink_param_generic[param->id].type);
-
- return 0;
-}
-
-static int devlink_param_driver_verify(const struct devlink_param *param)
-{
- int i;
-
- if (param->id <= DEVLINK_PARAM_GENERIC_ID_MAX)
- return -EINVAL;
- /* verify no such name in generic params */
- for (i = 0; i <= DEVLINK_PARAM_GENERIC_ID_MAX; i++)
- if (!strcmp(param->name, devlink_param_generic[i].name))
- return -EEXIST;
-
- return 0;
-}
-
-static struct devlink_param_item *
-devlink_param_find_by_name(struct list_head *param_list,
- const char *param_name)
-{
- struct devlink_param_item *param_item;
-
- list_for_each_entry(param_item, param_list, list)
- if (!strcmp(param_item->param->name, param_name))
- return param_item;
- return NULL;
-}
-
-static struct devlink_param_item *
-devlink_param_find_by_id(struct list_head *param_list, u32 param_id)
-{
- struct devlink_param_item *param_item;
-
- list_for_each_entry(param_item, param_list, list)
- if (param_item->param->id == param_id)
- return param_item;
- return NULL;
-}
-
-static bool
-devlink_param_cmode_is_supported(const struct devlink_param *param,
- enum devlink_param_cmode cmode)
-{
- return test_bit(cmode, &param->supported_cmodes);
-}
-
-static int devlink_param_get(struct devlink *devlink,
- const struct devlink_param *param,
- struct devlink_param_gset_ctx *ctx)
-{
- if (!param->get || devlink->reload_failed)
- return -EOPNOTSUPP;
- return param->get(devlink, param->id, ctx);
-}
-
-static int devlink_param_set(struct devlink *devlink,
- const struct devlink_param *param,
- struct devlink_param_gset_ctx *ctx)
-{
- if (!param->set || devlink->reload_failed)
- return -EOPNOTSUPP;
- return param->set(devlink, param->id, ctx);
-}
-
-static int
-devlink_param_type_to_nla_type(enum devlink_param_type param_type)
-{
- switch (param_type) {
- case DEVLINK_PARAM_TYPE_U8:
- return NLA_U8;
- case DEVLINK_PARAM_TYPE_U16:
- return NLA_U16;
- case DEVLINK_PARAM_TYPE_U32:
- return NLA_U32;
- case DEVLINK_PARAM_TYPE_STRING:
- return NLA_STRING;
- case DEVLINK_PARAM_TYPE_BOOL:
- return NLA_FLAG;
- default:
- return -EINVAL;
- }
-}
-
-static int
-devlink_nl_param_value_fill_one(struct sk_buff *msg,
- enum devlink_param_type type,
- enum devlink_param_cmode cmode,
- union devlink_param_value val)
-{
- struct nlattr *param_value_attr;
-
- param_value_attr = nla_nest_start_noflag(msg,
- DEVLINK_ATTR_PARAM_VALUE);
- if (!param_value_attr)
- goto nla_put_failure;
-
- if (nla_put_u8(msg, DEVLINK_ATTR_PARAM_VALUE_CMODE, cmode))
- goto value_nest_cancel;
-
- switch (type) {
- case DEVLINK_PARAM_TYPE_U8:
- if (nla_put_u8(msg, DEVLINK_ATTR_PARAM_VALUE_DATA, val.vu8))
- goto value_nest_cancel;
- break;
- case DEVLINK_PARAM_TYPE_U16:
- if (nla_put_u16(msg, DEVLINK_ATTR_PARAM_VALUE_DATA, val.vu16))
- goto value_nest_cancel;
- break;
- case DEVLINK_PARAM_TYPE_U32:
- if (nla_put_u32(msg, DEVLINK_ATTR_PARAM_VALUE_DATA, val.vu32))
- goto value_nest_cancel;
- break;
- case DEVLINK_PARAM_TYPE_STRING:
- if (nla_put_string(msg, DEVLINK_ATTR_PARAM_VALUE_DATA,
- val.vstr))
- goto value_nest_cancel;
- break;
- case DEVLINK_PARAM_TYPE_BOOL:
- if (val.vbool &&
- nla_put_flag(msg, DEVLINK_ATTR_PARAM_VALUE_DATA))
- goto value_nest_cancel;
- break;
- }
-
- nla_nest_end(msg, param_value_attr);
- return 0;
-
-value_nest_cancel:
- nla_nest_cancel(msg, param_value_attr);
-nla_put_failure:
- return -EMSGSIZE;
-}
-
-static int devlink_nl_param_fill(struct sk_buff *msg, struct devlink *devlink,
- unsigned int port_index,
- struct devlink_param_item *param_item,
- enum devlink_command cmd,
- u32 portid, u32 seq, int flags)
-{
- union devlink_param_value param_value[DEVLINK_PARAM_CMODE_MAX + 1];
- bool param_value_set[DEVLINK_PARAM_CMODE_MAX + 1] = {};
- const struct devlink_param *param = param_item->param;
- struct devlink_param_gset_ctx ctx;
- struct nlattr *param_values_list;
- struct nlattr *param_attr;
- int nla_type;
- void *hdr;
- int err;
- int i;
-
- /* Get value from driver part to driverinit configuration mode */
- for (i = 0; i <= DEVLINK_PARAM_CMODE_MAX; i++) {
- if (!devlink_param_cmode_is_supported(param, i))
- continue;
- if (i == DEVLINK_PARAM_CMODE_DRIVERINIT) {
- if (!param_item->driverinit_value_valid)
- return -EOPNOTSUPP;
- param_value[i] = param_item->driverinit_value;
- } else {
- ctx.cmode = i;
- err = devlink_param_get(devlink, param, &ctx);
- if (err)
- return err;
- param_value[i] = ctx.val;
- }
- param_value_set[i] = true;
- }
-
- hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
- if (!hdr)
- return -EMSGSIZE;
-
- if (devlink_nl_put_handle(msg, devlink))
- goto genlmsg_cancel;
-
- if (cmd == DEVLINK_CMD_PORT_PARAM_GET ||
- cmd == DEVLINK_CMD_PORT_PARAM_NEW ||
- cmd == DEVLINK_CMD_PORT_PARAM_DEL)
- if (nla_put_u32(msg, DEVLINK_ATTR_PORT_INDEX, port_index))
- goto genlmsg_cancel;
-
- param_attr = nla_nest_start_noflag(msg, DEVLINK_ATTR_PARAM);
- if (!param_attr)
- goto genlmsg_cancel;
- if (nla_put_string(msg, DEVLINK_ATTR_PARAM_NAME, param->name))
- goto param_nest_cancel;
- if (param->generic && nla_put_flag(msg, DEVLINK_ATTR_PARAM_GENERIC))
- goto param_nest_cancel;
-
- nla_type = devlink_param_type_to_nla_type(param->type);
- if (nla_type < 0)
- goto param_nest_cancel;
- if (nla_put_u8(msg, DEVLINK_ATTR_PARAM_TYPE, nla_type))
- goto param_nest_cancel;
-
- param_values_list = nla_nest_start_noflag(msg,
- DEVLINK_ATTR_PARAM_VALUES_LIST);
- if (!param_values_list)
- goto param_nest_cancel;
-
- for (i = 0; i <= DEVLINK_PARAM_CMODE_MAX; i++) {
- if (!param_value_set[i])
- continue;
- err = devlink_nl_param_value_fill_one(msg, param->type,
- i, param_value[i]);
- if (err)
- goto values_list_nest_cancel;
- }
-
- nla_nest_end(msg, param_values_list);
- nla_nest_end(msg, param_attr);
- genlmsg_end(msg, hdr);
- return 0;
-
-values_list_nest_cancel:
- nla_nest_end(msg, param_values_list);
-param_nest_cancel:
- nla_nest_cancel(msg, param_attr);
-genlmsg_cancel:
- genlmsg_cancel(msg, hdr);
- return -EMSGSIZE;
-}
-
-static void devlink_param_notify(struct devlink *devlink,
- unsigned int port_index,
- struct devlink_param_item *param_item,
- enum devlink_command cmd)
-{
- struct sk_buff *msg;
- int err;
-
- WARN_ON(cmd != DEVLINK_CMD_PARAM_NEW && cmd != DEVLINK_CMD_PARAM_DEL &&
- cmd != DEVLINK_CMD_PORT_PARAM_NEW &&
- cmd != DEVLINK_CMD_PORT_PARAM_DEL);
- ASSERT_DEVLINK_REGISTERED(devlink);
-
- msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
- if (!msg)
- return;
- err = devlink_nl_param_fill(msg, devlink, port_index, param_item, cmd,
- 0, 0, 0);
- if (err) {
- nlmsg_free(msg);
- return;
- }
-
- genlmsg_multicast_netns(&devlink_nl_family, devlink_net(devlink),
- msg, 0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL);
-}
-
-static int devlink_nl_cmd_param_get_dumpit(struct sk_buff *msg,
- struct netlink_callback *cb)
-{
- struct devlink_param_item *param_item;
- struct devlink *devlink;
- int start = cb->args[0];
- unsigned long index;
- int idx = 0;
- int err = 0;
-
- devlinks_xa_for_each_registered_get(sock_net(msg->sk), index, devlink) {
- devl_lock(devlink);
- list_for_each_entry(param_item, &devlink->param_list, list) {
- if (idx < start) {
- idx++;
- continue;
- }
- err = devlink_nl_param_fill(msg, devlink, 0, param_item,
- DEVLINK_CMD_PARAM_GET,
- NETLINK_CB(cb->skb).portid,
- cb->nlh->nlmsg_seq,
- NLM_F_MULTI);
- if (err == -EOPNOTSUPP) {
- err = 0;
- } else if (err) {
- devl_unlock(devlink);
- devlink_put(devlink);
- goto out;
- }
- idx++;
- }
- devl_unlock(devlink);
- devlink_put(devlink);
- }
-out:
- if (err != -EMSGSIZE)
- return err;
-
- cb->args[0] = idx;
- return msg->len;
-}
-
-static int
-devlink_param_type_get_from_info(struct genl_info *info,
- enum devlink_param_type *param_type)
-{
- if (GENL_REQ_ATTR_CHECK(info, DEVLINK_ATTR_PARAM_TYPE))
- return -EINVAL;
-
- switch (nla_get_u8(info->attrs[DEVLINK_ATTR_PARAM_TYPE])) {
- case NLA_U8:
- *param_type = DEVLINK_PARAM_TYPE_U8;
- break;
- case NLA_U16:
- *param_type = DEVLINK_PARAM_TYPE_U16;
- break;
- case NLA_U32:
- *param_type = DEVLINK_PARAM_TYPE_U32;
- break;
- case NLA_STRING:
- *param_type = DEVLINK_PARAM_TYPE_STRING;
- break;
- case NLA_FLAG:
- *param_type = DEVLINK_PARAM_TYPE_BOOL;
- break;
- default:
- return -EINVAL;
- }
-
- return 0;
-}
-
-static int
-devlink_param_value_get_from_info(const struct devlink_param *param,
- struct genl_info *info,
- union devlink_param_value *value)
-{
- struct nlattr *param_data;
- int len;
-
- param_data = info->attrs[DEVLINK_ATTR_PARAM_VALUE_DATA];
-
- if (param->type != DEVLINK_PARAM_TYPE_BOOL && !param_data)
- return -EINVAL;
-
- switch (param->type) {
- case DEVLINK_PARAM_TYPE_U8:
- if (nla_len(param_data) != sizeof(u8))
- return -EINVAL;
- value->vu8 = nla_get_u8(param_data);
- break;
- case DEVLINK_PARAM_TYPE_U16:
- if (nla_len(param_data) != sizeof(u16))
- return -EINVAL;
- value->vu16 = nla_get_u16(param_data);
- break;
- case DEVLINK_PARAM_TYPE_U32:
- if (nla_len(param_data) != sizeof(u32))
- return -EINVAL;
- value->vu32 = nla_get_u32(param_data);
- break;
- case DEVLINK_PARAM_TYPE_STRING:
- len = strnlen(nla_data(param_data), nla_len(param_data));
- if (len == nla_len(param_data) ||
- len >= __DEVLINK_PARAM_MAX_STRING_VALUE)
- return -EINVAL;
- strcpy(value->vstr, nla_data(param_data));
- break;
- case DEVLINK_PARAM_TYPE_BOOL:
- if (param_data && nla_len(param_data))
- return -EINVAL;
- value->vbool = nla_get_flag(param_data);
- break;
- }
- return 0;
-}
-
-static struct devlink_param_item *
-devlink_param_get_from_info(struct list_head *param_list,
- struct genl_info *info)
-{
- char *param_name;
-
- if (GENL_REQ_ATTR_CHECK(info, DEVLINK_ATTR_PARAM_NAME))
- return NULL;
-
- param_name = nla_data(info->attrs[DEVLINK_ATTR_PARAM_NAME]);
- return devlink_param_find_by_name(param_list, param_name);
-}
-
-static int devlink_nl_cmd_param_get_doit(struct sk_buff *skb,
- struct genl_info *info)
-{
- struct devlink *devlink = info->user_ptr[0];
- struct devlink_param_item *param_item;
- struct sk_buff *msg;
- int err;
-
- param_item = devlink_param_get_from_info(&devlink->param_list, info);
- if (!param_item)
- return -EINVAL;
-
- msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
- if (!msg)
- return -ENOMEM;
-
- err = devlink_nl_param_fill(msg, devlink, 0, param_item,
- DEVLINK_CMD_PARAM_GET,
- info->snd_portid, info->snd_seq, 0);
- if (err) {
- nlmsg_free(msg);
- return err;
- }
-
- return genlmsg_reply(msg, info);
-}
-
-static int __devlink_nl_cmd_param_set_doit(struct devlink *devlink,
- unsigned int port_index,
- struct list_head *param_list,
- struct genl_info *info,
- enum devlink_command cmd)
-{
- enum devlink_param_type param_type;
- struct devlink_param_gset_ctx ctx;
- enum devlink_param_cmode cmode;
- struct devlink_param_item *param_item;
- const struct devlink_param *param;
- union devlink_param_value value;
- int err = 0;
-
- param_item = devlink_param_get_from_info(param_list, info);
- if (!param_item)
- return -EINVAL;
- param = param_item->param;
- err = devlink_param_type_get_from_info(info, &param_type);
- if (err)
- return err;
- if (param_type != param->type)
- return -EINVAL;
- err = devlink_param_value_get_from_info(param, info, &value);
- if (err)
- return err;
- if (param->validate) {
- err = param->validate(devlink, param->id, value, info->extack);
- if (err)
- return err;
- }
-
- if (GENL_REQ_ATTR_CHECK(info, DEVLINK_ATTR_PARAM_VALUE_CMODE))
- return -EINVAL;
- cmode = nla_get_u8(info->attrs[DEVLINK_ATTR_PARAM_VALUE_CMODE]);
- if (!devlink_param_cmode_is_supported(param, cmode))
- return -EOPNOTSUPP;
-
- if (cmode == DEVLINK_PARAM_CMODE_DRIVERINIT) {
- if (param->type == DEVLINK_PARAM_TYPE_STRING)
- strcpy(param_item->driverinit_value.vstr, value.vstr);
- else
- param_item->driverinit_value = value;
- param_item->driverinit_value_valid = true;
- } else {
- if (!param->set)
- return -EOPNOTSUPP;
- ctx.val = value;
- ctx.cmode = cmode;
- err = devlink_param_set(devlink, param, &ctx);
- if (err)
- return err;
- }
-
- devlink_param_notify(devlink, port_index, param_item, cmd);
- return 0;
-}
-
-static int devlink_nl_cmd_param_set_doit(struct sk_buff *skb,
- struct genl_info *info)
-{
- struct devlink *devlink = info->user_ptr[0];
-
- return __devlink_nl_cmd_param_set_doit(devlink, 0, &devlink->param_list,
- info, DEVLINK_CMD_PARAM_NEW);
-}
-
-static int devlink_nl_cmd_port_param_get_dumpit(struct sk_buff *msg,
- struct netlink_callback *cb)
-{
- NL_SET_ERR_MSG_MOD(cb->extack, "Port params are not supported");
- return msg->len;
-}
-
-static int devlink_nl_cmd_port_param_get_doit(struct sk_buff *skb,
- struct genl_info *info)
-{
- NL_SET_ERR_MSG_MOD(info->extack, "Port params are not supported");
- return -EINVAL;
-}
-
-static int devlink_nl_cmd_port_param_set_doit(struct sk_buff *skb,
- struct genl_info *info)
-{
- NL_SET_ERR_MSG_MOD(info->extack, "Port params are not supported");
- return -EINVAL;
-}
-
-static int devlink_nl_region_snapshot_id_put(struct sk_buff *msg,
- struct devlink *devlink,
- struct devlink_snapshot *snapshot)
-{
- struct nlattr *snap_attr;
- int err;
-
- snap_attr = nla_nest_start_noflag(msg, DEVLINK_ATTR_REGION_SNAPSHOT);
- if (!snap_attr)
- return -EINVAL;
-
- err = nla_put_u32(msg, DEVLINK_ATTR_REGION_SNAPSHOT_ID, snapshot->id);
- if (err)
- goto nla_put_failure;
-
- nla_nest_end(msg, snap_attr);
- return 0;
-
-nla_put_failure:
- nla_nest_cancel(msg, snap_attr);
- return err;
-}
-
-static int devlink_nl_region_snapshots_id_put(struct sk_buff *msg,
- struct devlink *devlink,
- struct devlink_region *region)
-{
- struct devlink_snapshot *snapshot;
- struct nlattr *snapshots_attr;
- int err;
-
- snapshots_attr = nla_nest_start_noflag(msg,
- DEVLINK_ATTR_REGION_SNAPSHOTS);
- if (!snapshots_attr)
- return -EINVAL;
-
- list_for_each_entry(snapshot, &region->snapshot_list, list) {
- err = devlink_nl_region_snapshot_id_put(msg, devlink, snapshot);
- if (err)
- goto nla_put_failure;
- }
-
- nla_nest_end(msg, snapshots_attr);
- return 0;
-
-nla_put_failure:
- nla_nest_cancel(msg, snapshots_attr);
- return err;
-}
-
-static int devlink_nl_region_fill(struct sk_buff *msg, struct devlink *devlink,
- enum devlink_command cmd, u32 portid,
- u32 seq, int flags,
- struct devlink_region *region)
-{
- void *hdr;
- int err;
-
- hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
- if (!hdr)
- return -EMSGSIZE;
-
- err = devlink_nl_put_handle(msg, devlink);
- if (err)
- goto nla_put_failure;
-
- if (region->port) {
- err = nla_put_u32(msg, DEVLINK_ATTR_PORT_INDEX,
- region->port->index);
- if (err)
- goto nla_put_failure;
- }
-
- err = nla_put_string(msg, DEVLINK_ATTR_REGION_NAME, region->ops->name);
- if (err)
- goto nla_put_failure;
-
- err = nla_put_u64_64bit(msg, DEVLINK_ATTR_REGION_SIZE,
- region->size,
- DEVLINK_ATTR_PAD);
- if (err)
- goto nla_put_failure;
-
- err = nla_put_u32(msg, DEVLINK_ATTR_REGION_MAX_SNAPSHOTS,
- region->max_snapshots);
- if (err)
- goto nla_put_failure;
-
- err = devlink_nl_region_snapshots_id_put(msg, devlink, region);
- if (err)
- goto nla_put_failure;
-
- genlmsg_end(msg, hdr);
- return 0;
-
-nla_put_failure:
- genlmsg_cancel(msg, hdr);
- return err;
-}
-
-static struct sk_buff *
-devlink_nl_region_notify_build(struct devlink_region *region,
- struct devlink_snapshot *snapshot,
- enum devlink_command cmd, u32 portid, u32 seq)
-{
- struct devlink *devlink = region->devlink;
- struct sk_buff *msg;
- void *hdr;
- int err;
-
-
- msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
- if (!msg)
- return ERR_PTR(-ENOMEM);
-
- hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, 0, cmd);
- if (!hdr) {
- err = -EMSGSIZE;
- goto out_free_msg;
- }
-
- err = devlink_nl_put_handle(msg, devlink);
- if (err)
- goto out_cancel_msg;
-
- if (region->port) {
- err = nla_put_u32(msg, DEVLINK_ATTR_PORT_INDEX,
- region->port->index);
- if (err)
- goto out_cancel_msg;
- }
-
- err = nla_put_string(msg, DEVLINK_ATTR_REGION_NAME,
- region->ops->name);
- if (err)
- goto out_cancel_msg;
-
- if (snapshot) {
- err = nla_put_u32(msg, DEVLINK_ATTR_REGION_SNAPSHOT_ID,
- snapshot->id);
- if (err)
- goto out_cancel_msg;
- } else {
- err = nla_put_u64_64bit(msg, DEVLINK_ATTR_REGION_SIZE,
- region->size, DEVLINK_ATTR_PAD);
- if (err)
- goto out_cancel_msg;
- }
- genlmsg_end(msg, hdr);
-
- return msg;
-
-out_cancel_msg:
- genlmsg_cancel(msg, hdr);
-out_free_msg:
- nlmsg_free(msg);
- return ERR_PTR(err);
-}
-
-static void devlink_nl_region_notify(struct devlink_region *region,
- struct devlink_snapshot *snapshot,
- enum devlink_command cmd)
-{
- struct devlink *devlink = region->devlink;
- struct sk_buff *msg;
-
- WARN_ON(cmd != DEVLINK_CMD_REGION_NEW && cmd != DEVLINK_CMD_REGION_DEL);
- if (!xa_get_mark(&devlinks, devlink->index, DEVLINK_REGISTERED))
- return;
-
- msg = devlink_nl_region_notify_build(region, snapshot, cmd, 0, 0);
- if (IS_ERR(msg))
- return;
-
- genlmsg_multicast_netns(&devlink_nl_family, devlink_net(devlink), msg,
- 0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL);
-}
-
-/**
- * __devlink_snapshot_id_increment - Increment number of snapshots using an id
- * @devlink: devlink instance
- * @id: the snapshot id
- *
- * Track when a new snapshot begins using an id. Load the count for the
- * given id from the snapshot xarray, increment it, and store it back.
- *
- * Called when a new snapshot is created with the given id.
- *
- * The id *must* have been previously allocated by
- * devlink_region_snapshot_id_get().
- *
- * Returns 0 on success, or an error on failure.
- */
-static int __devlink_snapshot_id_increment(struct devlink *devlink, u32 id)
-{
- unsigned long count;
- void *p;
- int err;
-
- xa_lock(&devlink->snapshot_ids);
- p = xa_load(&devlink->snapshot_ids, id);
- if (WARN_ON(!p)) {
- err = -EINVAL;
- goto unlock;
- }
-
- if (WARN_ON(!xa_is_value(p))) {
- err = -EINVAL;
- goto unlock;
- }
-
- count = xa_to_value(p);
- count++;
-
- err = xa_err(__xa_store(&devlink->snapshot_ids, id, xa_mk_value(count),
- GFP_ATOMIC));
-unlock:
- xa_unlock(&devlink->snapshot_ids);
- return err;
-}
-
-/**
- * __devlink_snapshot_id_decrement - Decrease number of snapshots using an id
- * @devlink: devlink instance
- * @id: the snapshot id
- *
- * Track when a snapshot is deleted and stops using an id. Load the count
- * for the given id from the snapshot xarray, decrement it, and store it
- * back.
- *
- * If the count reaches zero, erase this id from the xarray, freeing it
- * up for future re-use by devlink_region_snapshot_id_get().
- *
- * Called when a snapshot using the given id is deleted, and when the
- * initial allocator of the id is finished using it.
- */
-static void __devlink_snapshot_id_decrement(struct devlink *devlink, u32 id)
-{
- unsigned long count;
- void *p;
-
- xa_lock(&devlink->snapshot_ids);
- p = xa_load(&devlink->snapshot_ids, id);
- if (WARN_ON(!p))
- goto unlock;
-
- if (WARN_ON(!xa_is_value(p)))
- goto unlock;
-
- count = xa_to_value(p);
-
- if (count > 1) {
- count--;
- __xa_store(&devlink->snapshot_ids, id, xa_mk_value(count),
- GFP_ATOMIC);
- } else {
- /* If this was the last user, we can erase this id */
- __xa_erase(&devlink->snapshot_ids, id);
- }
-unlock:
- xa_unlock(&devlink->snapshot_ids);
-}
-
-/**
- * __devlink_snapshot_id_insert - Insert a specific snapshot ID
- * @devlink: devlink instance
- * @id: the snapshot id
- *
- * Mark the given snapshot id as used by inserting a zero value into the
- * snapshot xarray.
- *
- * This must be called while holding the devlink instance lock. Unlike
- * devlink_snapshot_id_get, the initial reference count is zero, not one.
- * It is expected that the id will immediately be used before
- * releasing the devlink instance lock.
- *
- * Returns zero on success, or an error code if the snapshot id could not
- * be inserted.
- */
-static int __devlink_snapshot_id_insert(struct devlink *devlink, u32 id)
-{
- int err;
-
- xa_lock(&devlink->snapshot_ids);
- if (xa_load(&devlink->snapshot_ids, id)) {
- xa_unlock(&devlink->snapshot_ids);
- return -EEXIST;
- }
- err = xa_err(__xa_store(&devlink->snapshot_ids, id, xa_mk_value(0),
- GFP_ATOMIC));
- xa_unlock(&devlink->snapshot_ids);
- return err;
-}
-
-/**
- * __devlink_region_snapshot_id_get - get snapshot ID
- * @devlink: devlink instance
- * @id: storage to return snapshot id
- *
- * Allocates a new snapshot id. Returns zero on success, or a negative
- * error on failure. Must be called while holding the devlink instance
- * lock.
- *
- * Snapshot IDs are tracked using an xarray which stores the number of
- * users of the snapshot id.
- *
- * Note that the caller of this function counts as a 'user', in order to
- * avoid race conditions. The caller must release its hold on the
- * snapshot by using devlink_region_snapshot_id_put.
- */
-static int __devlink_region_snapshot_id_get(struct devlink *devlink, u32 *id)
-{
- return xa_alloc(&devlink->snapshot_ids, id, xa_mk_value(1),
- xa_limit_32b, GFP_KERNEL);
-}
-
-/**
- * __devlink_region_snapshot_create - create a new snapshot
- * This will add a new snapshot of a region. The snapshot
- * will be stored on the region struct and can be accessed
- * from devlink. This is useful for future analyses of snapshots.
- * Multiple snapshots can be created on a region.
- * The @snapshot_id should be obtained using the getter function.
- *
- * Must be called only while holding the region snapshot lock.
- *
- * @region: devlink region of the snapshot
- * @data: snapshot data
- * @snapshot_id: snapshot id to be created
- */
-static int
-__devlink_region_snapshot_create(struct devlink_region *region,
- u8 *data, u32 snapshot_id)
-{
- struct devlink *devlink = region->devlink;
- struct devlink_snapshot *snapshot;
- int err;
-
- lockdep_assert_held(&region->snapshot_lock);
-
- /* check if region can hold one more snapshot */
- if (region->cur_snapshots == region->max_snapshots)
- return -ENOSPC;
-
- if (devlink_region_snapshot_get_by_id(region, snapshot_id))
- return -EEXIST;
-
- snapshot = kzalloc(sizeof(*snapshot), GFP_KERNEL);
- if (!snapshot)
- return -ENOMEM;
-
- err = __devlink_snapshot_id_increment(devlink, snapshot_id);
- if (err)
- goto err_snapshot_id_increment;
-
- snapshot->id = snapshot_id;
- snapshot->region = region;
- snapshot->data = data;
-
- list_add_tail(&snapshot->list, &region->snapshot_list);
-
- region->cur_snapshots++;
-
- devlink_nl_region_notify(region, snapshot, DEVLINK_CMD_REGION_NEW);
- return 0;
-
-err_snapshot_id_increment:
- kfree(snapshot);
- return err;
-}
-
-static void devlink_region_snapshot_del(struct devlink_region *region,
- struct devlink_snapshot *snapshot)
-{
- struct devlink *devlink = region->devlink;
-
- lockdep_assert_held(&region->snapshot_lock);
-
- devlink_nl_region_notify(region, snapshot, DEVLINK_CMD_REGION_DEL);
- region->cur_snapshots--;
- list_del(&snapshot->list);
- region->ops->destructor(snapshot->data);
- __devlink_snapshot_id_decrement(devlink, snapshot->id);
- kfree(snapshot);
-}
-
-static int devlink_nl_cmd_region_get_doit(struct sk_buff *skb,
- struct genl_info *info)
-{
- struct devlink *devlink = info->user_ptr[0];
- struct devlink_port *port = NULL;
- struct devlink_region *region;
- const char *region_name;
- struct sk_buff *msg;
- unsigned int index;
- int err;
-
- if (GENL_REQ_ATTR_CHECK(info, DEVLINK_ATTR_REGION_NAME))
- return -EINVAL;
-
- if (info->attrs[DEVLINK_ATTR_PORT_INDEX]) {
- index = nla_get_u32(info->attrs[DEVLINK_ATTR_PORT_INDEX]);
-
- port = devlink_port_get_by_index(devlink, index);
- if (!port)
- return -ENODEV;
- }
-
- region_name = nla_data(info->attrs[DEVLINK_ATTR_REGION_NAME]);
- if (port)
- region = devlink_port_region_get_by_name(port, region_name);
- else
- region = devlink_region_get_by_name(devlink, region_name);
-
- if (!region)
- return -EINVAL;
-
- msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
- if (!msg)
- return -ENOMEM;
-
- err = devlink_nl_region_fill(msg, devlink, DEVLINK_CMD_REGION_GET,
- info->snd_portid, info->snd_seq, 0,
- region);
- if (err) {
- nlmsg_free(msg);
- return err;
- }
-
- return genlmsg_reply(msg, info);
-}
-
-static int devlink_nl_cmd_region_get_port_dumpit(struct sk_buff *msg,
- struct netlink_callback *cb,
- struct devlink_port *port,
- int *idx,
- int start)
-{
- struct devlink_region *region;
- int err = 0;
-
- list_for_each_entry(region, &port->region_list, list) {
- if (*idx < start) {
- (*idx)++;
- continue;
- }
- err = devlink_nl_region_fill(msg, port->devlink,
- DEVLINK_CMD_REGION_GET,
- NETLINK_CB(cb->skb).portid,
- cb->nlh->nlmsg_seq,
- NLM_F_MULTI, region);
- if (err)
- goto out;
- (*idx)++;
- }
-
-out:
- return err;
-}
-
-static int devlink_nl_cmd_region_get_devlink_dumpit(struct sk_buff *msg,
- struct netlink_callback *cb,
- struct devlink *devlink,
- int *idx,
- int start)
-{
- struct devlink_region *region;
- struct devlink_port *port;
- int err = 0;
-
- devl_lock(devlink);
- list_for_each_entry(region, &devlink->region_list, list) {
- if (*idx < start) {
- (*idx)++;
- continue;
- }
- err = devlink_nl_region_fill(msg, devlink,
- DEVLINK_CMD_REGION_GET,
- NETLINK_CB(cb->skb).portid,
- cb->nlh->nlmsg_seq,
- NLM_F_MULTI, region);
- if (err)
- goto out;
- (*idx)++;
- }
-
- list_for_each_entry(port, &devlink->port_list, list) {
- err = devlink_nl_cmd_region_get_port_dumpit(msg, cb, port, idx,
- start);
- if (err)
- goto out;
- }
-
-out:
- devl_unlock(devlink);
- return err;
-}
-
-static int devlink_nl_cmd_region_get_dumpit(struct sk_buff *msg,
- struct netlink_callback *cb)
-{
- struct devlink *devlink;
- int start = cb->args[0];
- unsigned long index;
- int idx = 0;
- int err = 0;
-
- devlinks_xa_for_each_registered_get(sock_net(msg->sk), index, devlink) {
- err = devlink_nl_cmd_region_get_devlink_dumpit(msg, cb, devlink,
- &idx, start);
- devlink_put(devlink);
- if (err)
- goto out;
- }
-out:
- cb->args[0] = idx;
- return msg->len;
-}
-
-static int devlink_nl_cmd_region_del(struct sk_buff *skb,
- struct genl_info *info)
-{
- struct devlink *devlink = info->user_ptr[0];
- struct devlink_snapshot *snapshot;
- struct devlink_port *port = NULL;
- struct devlink_region *region;
- const char *region_name;
- unsigned int index;
- u32 snapshot_id;
-
- if (GENL_REQ_ATTR_CHECK(info, DEVLINK_ATTR_REGION_NAME) ||
- GENL_REQ_ATTR_CHECK(info, DEVLINK_ATTR_REGION_SNAPSHOT_ID))
- return -EINVAL;
-
- region_name = nla_data(info->attrs[DEVLINK_ATTR_REGION_NAME]);
- snapshot_id = nla_get_u32(info->attrs[DEVLINK_ATTR_REGION_SNAPSHOT_ID]);
-
- if (info->attrs[DEVLINK_ATTR_PORT_INDEX]) {
- index = nla_get_u32(info->attrs[DEVLINK_ATTR_PORT_INDEX]);
-
- port = devlink_port_get_by_index(devlink, index);
- if (!port)
- return -ENODEV;
- }
-
- if (port)
- region = devlink_port_region_get_by_name(port, region_name);
- else
- region = devlink_region_get_by_name(devlink, region_name);
-
- if (!region)
- return -EINVAL;
-
- mutex_lock(&region->snapshot_lock);
- snapshot = devlink_region_snapshot_get_by_id(region, snapshot_id);
- if (!snapshot) {
- mutex_unlock(&region->snapshot_lock);
- return -EINVAL;
- }
-
- devlink_region_snapshot_del(region, snapshot);
- mutex_unlock(&region->snapshot_lock);
- return 0;
-}
-
-static int
-devlink_nl_cmd_region_new(struct sk_buff *skb, struct genl_info *info)
-{
- struct devlink *devlink = info->user_ptr[0];
- struct devlink_snapshot *snapshot;
- struct devlink_port *port = NULL;
- struct nlattr *snapshot_id_attr;
- struct devlink_region *region;
- const char *region_name;
- unsigned int index;
- u32 snapshot_id;
- u8 *data;
- int err;
-
- if (GENL_REQ_ATTR_CHECK(info, DEVLINK_ATTR_REGION_NAME)) {
- NL_SET_ERR_MSG_MOD(info->extack, "No region name provided");
- return -EINVAL;
- }
-
- region_name = nla_data(info->attrs[DEVLINK_ATTR_REGION_NAME]);
-
- if (info->attrs[DEVLINK_ATTR_PORT_INDEX]) {
- index = nla_get_u32(info->attrs[DEVLINK_ATTR_PORT_INDEX]);
-
- port = devlink_port_get_by_index(devlink, index);
- if (!port)
- return -ENODEV;
- }
-
- if (port)
- region = devlink_port_region_get_by_name(port, region_name);
- else
- region = devlink_region_get_by_name(devlink, region_name);
-
- if (!region) {
- NL_SET_ERR_MSG_MOD(info->extack, "The requested region does not exist");
- return -EINVAL;
- }
-
- if (!region->ops->snapshot) {
- NL_SET_ERR_MSG_MOD(info->extack, "The requested region does not support taking an immediate snapshot");
- return -EOPNOTSUPP;
- }
-
- mutex_lock(&region->snapshot_lock);
-
- if (region->cur_snapshots == region->max_snapshots) {
- NL_SET_ERR_MSG_MOD(info->extack, "The region has reached the maximum number of stored snapshots");
- err = -ENOSPC;
- goto unlock;
- }
-
- snapshot_id_attr = info->attrs[DEVLINK_ATTR_REGION_SNAPSHOT_ID];
- if (snapshot_id_attr) {
- snapshot_id = nla_get_u32(snapshot_id_attr);
-
- if (devlink_region_snapshot_get_by_id(region, snapshot_id)) {
- NL_SET_ERR_MSG_MOD(info->extack, "The requested snapshot id is already in use");
- err = -EEXIST;
- goto unlock;
- }
-
- err = __devlink_snapshot_id_insert(devlink, snapshot_id);
- if (err)
- goto unlock;
- } else {
- err = __devlink_region_snapshot_id_get(devlink, &snapshot_id);
- if (err) {
- NL_SET_ERR_MSG_MOD(info->extack, "Failed to allocate a new snapshot id");
- goto unlock;
- }
- }
-
- if (port)
- err = region->port_ops->snapshot(port, region->port_ops,
- info->extack, &data);
- else
- err = region->ops->snapshot(devlink, region->ops,
- info->extack, &data);
- if (err)
- goto err_snapshot_capture;
-
- err = __devlink_region_snapshot_create(region, data, snapshot_id);
- if (err)
- goto err_snapshot_create;
-
- if (!snapshot_id_attr) {
- struct sk_buff *msg;
-
- snapshot = devlink_region_snapshot_get_by_id(region,
- snapshot_id);
- if (WARN_ON(!snapshot)) {
- err = -EINVAL;
- goto unlock;
- }
-
- msg = devlink_nl_region_notify_build(region, snapshot,
- DEVLINK_CMD_REGION_NEW,
- info->snd_portid,
- info->snd_seq);
- err = PTR_ERR_OR_ZERO(msg);
- if (err)
- goto err_notify;
-
- err = genlmsg_reply(msg, info);
- if (err)
- goto err_notify;
- }
-
- mutex_unlock(&region->snapshot_lock);
- return 0;
-
-err_snapshot_create:
- region->ops->destructor(data);
-err_snapshot_capture:
- __devlink_snapshot_id_decrement(devlink, snapshot_id);
- mutex_unlock(&region->snapshot_lock);
- return err;
-
-err_notify:
- devlink_region_snapshot_del(region, snapshot);
-unlock:
- mutex_unlock(&region->snapshot_lock);
- return err;
-}
-
-static int devlink_nl_cmd_region_read_chunk_fill(struct sk_buff *msg,
- struct devlink *devlink,
- u8 *chunk, u32 chunk_size,
- u64 addr)
-{
- struct nlattr *chunk_attr;
- int err;
-
- chunk_attr = nla_nest_start_noflag(msg, DEVLINK_ATTR_REGION_CHUNK);
- if (!chunk_attr)
- return -EINVAL;
-
- err = nla_put(msg, DEVLINK_ATTR_REGION_CHUNK_DATA, chunk_size, chunk);
- if (err)
- goto nla_put_failure;
-
- err = nla_put_u64_64bit(msg, DEVLINK_ATTR_REGION_CHUNK_ADDR, addr,
- DEVLINK_ATTR_PAD);
- if (err)
- goto nla_put_failure;
-
- nla_nest_end(msg, chunk_attr);
- return 0;
-
-nla_put_failure:
- nla_nest_cancel(msg, chunk_attr);
- return err;
-}
-
-#define DEVLINK_REGION_READ_CHUNK_SIZE 256
-
-static int devlink_nl_region_read_snapshot_fill(struct sk_buff *skb,
- struct devlink *devlink,
- struct devlink_region *region,
- struct nlattr **attrs,
- u64 start_offset,
- u64 end_offset,
- u64 *new_offset)
-{
- struct devlink_snapshot *snapshot;
- u64 curr_offset = start_offset;
- u32 snapshot_id;
- int err = 0;
-
- *new_offset = start_offset;
-
- snapshot_id = nla_get_u32(attrs[DEVLINK_ATTR_REGION_SNAPSHOT_ID]);
- snapshot = devlink_region_snapshot_get_by_id(region, snapshot_id);
- if (!snapshot)
- return -EINVAL;
-
- while (curr_offset < end_offset) {
- u32 data_size;
- u8 *data;
-
- if (end_offset - curr_offset < DEVLINK_REGION_READ_CHUNK_SIZE)
- data_size = end_offset - curr_offset;
- else
- data_size = DEVLINK_REGION_READ_CHUNK_SIZE;
-
- data = &snapshot->data[curr_offset];
- err = devlink_nl_cmd_region_read_chunk_fill(skb, devlink,
- data, data_size,
- curr_offset);
- if (err)
- break;
-
- curr_offset += data_size;
- }
- *new_offset = curr_offset;
-
- return err;
-}
-
-static int devlink_nl_cmd_region_read_dumpit(struct sk_buff *skb,
- struct netlink_callback *cb)
-{
- const struct genl_dumpit_info *info = genl_dumpit_info(cb);
- u64 ret_offset, start_offset, end_offset = U64_MAX;
- struct nlattr **attrs = info->attrs;
- struct devlink_port *port = NULL;
- struct devlink_region *region;
- struct nlattr *chunks_attr;
- const char *region_name;
- struct devlink *devlink;
- unsigned int index;
- void *hdr;
- int err;
-
- start_offset = *((u64 *)&cb->args[0]);
-
- devlink = devlink_get_from_attrs(sock_net(cb->skb->sk), attrs);
- if (IS_ERR(devlink))
- return PTR_ERR(devlink);
-
- devl_lock(devlink);
-
- if (!attrs[DEVLINK_ATTR_REGION_NAME] ||
- !attrs[DEVLINK_ATTR_REGION_SNAPSHOT_ID]) {
- err = -EINVAL;
- goto out_unlock;
- }
-
- if (info->attrs[DEVLINK_ATTR_PORT_INDEX]) {
- index = nla_get_u32(info->attrs[DEVLINK_ATTR_PORT_INDEX]);
-
- port = devlink_port_get_by_index(devlink, index);
- if (!port) {
- err = -ENODEV;
- goto out_unlock;
- }
- }
-
- region_name = nla_data(attrs[DEVLINK_ATTR_REGION_NAME]);
-
- if (port)
- region = devlink_port_region_get_by_name(port, region_name);
- else
- region = devlink_region_get_by_name(devlink, region_name);
-
- if (!region) {
- err = -EINVAL;
- goto out_unlock;
- }
-
- if (attrs[DEVLINK_ATTR_REGION_CHUNK_ADDR] &&
- attrs[DEVLINK_ATTR_REGION_CHUNK_LEN]) {
- if (!start_offset)
- start_offset =
- nla_get_u64(attrs[DEVLINK_ATTR_REGION_CHUNK_ADDR]);
-
- end_offset = nla_get_u64(attrs[DEVLINK_ATTR_REGION_CHUNK_ADDR]);
- end_offset += nla_get_u64(attrs[DEVLINK_ATTR_REGION_CHUNK_LEN]);
- }
-
- if (end_offset > region->size)
- end_offset = region->size;
-
- /* return 0 if there is no further data to read */
- if (start_offset == end_offset) {
- err = 0;
- goto out_unlock;
- }
-
- hdr = genlmsg_put(skb, NETLINK_CB(cb->skb).portid, cb->nlh->nlmsg_seq,
- &devlink_nl_family, NLM_F_ACK | NLM_F_MULTI,
- DEVLINK_CMD_REGION_READ);
- if (!hdr) {
- err = -EMSGSIZE;
- goto out_unlock;
- }
-
- err = devlink_nl_put_handle(skb, devlink);
- if (err)
- goto nla_put_failure;
-
- if (region->port) {
- err = nla_put_u32(skb, DEVLINK_ATTR_PORT_INDEX,
- region->port->index);
- if (err)
- goto nla_put_failure;
- }
-
- err = nla_put_string(skb, DEVLINK_ATTR_REGION_NAME, region_name);
- if (err)
- goto nla_put_failure;
-
- chunks_attr = nla_nest_start_noflag(skb, DEVLINK_ATTR_REGION_CHUNKS);
- if (!chunks_attr) {
- err = -EMSGSIZE;
- goto nla_put_failure;
- }
-
- err = devlink_nl_region_read_snapshot_fill(skb, devlink,
- region, attrs,
- start_offset,
- end_offset, &ret_offset);
-
- if (err && err != -EMSGSIZE)
- goto nla_put_failure;
-
- /* Check if there was any progress done to prevent infinite loop */
- if (ret_offset == start_offset) {
- err = -EINVAL;
- goto nla_put_failure;
- }
-
- *((u64 *)&cb->args[0]) = ret_offset;
-
- nla_nest_end(skb, chunks_attr);
- genlmsg_end(skb, hdr);
- devl_unlock(devlink);
- devlink_put(devlink);
- return skb->len;
-
-nla_put_failure:
- genlmsg_cancel(skb, hdr);
-out_unlock:
- devl_unlock(devlink);
- devlink_put(devlink);
- return err;
-}
-
-int devlink_info_driver_name_put(struct devlink_info_req *req, const char *name)
-{
- if (!req->msg)
- return 0;
- return nla_put_string(req->msg, DEVLINK_ATTR_INFO_DRIVER_NAME, name);
-}
-EXPORT_SYMBOL_GPL(devlink_info_driver_name_put);
-
-int devlink_info_serial_number_put(struct devlink_info_req *req, const char *sn)
-{
- if (!req->msg)
- return 0;
- return nla_put_string(req->msg, DEVLINK_ATTR_INFO_SERIAL_NUMBER, sn);
-}
-EXPORT_SYMBOL_GPL(devlink_info_serial_number_put);
-
-int devlink_info_board_serial_number_put(struct devlink_info_req *req,
- const char *bsn)
-{
- if (!req->msg)
- return 0;
- return nla_put_string(req->msg, DEVLINK_ATTR_INFO_BOARD_SERIAL_NUMBER,
- bsn);
-}
-EXPORT_SYMBOL_GPL(devlink_info_board_serial_number_put);
-
-static int devlink_info_version_put(struct devlink_info_req *req, int attr,
- const char *version_name,
- const char *version_value,
- enum devlink_info_version_type version_type)
-{
- struct nlattr *nest;
- int err;
-
- if (req->version_cb)
- req->version_cb(version_name, version_type,
- req->version_cb_priv);
-
- if (!req->msg)
- return 0;
-
- nest = nla_nest_start_noflag(req->msg, attr);
- if (!nest)
- return -EMSGSIZE;
-
- err = nla_put_string(req->msg, DEVLINK_ATTR_INFO_VERSION_NAME,
- version_name);
- if (err)
- goto nla_put_failure;
-
- err = nla_put_string(req->msg, DEVLINK_ATTR_INFO_VERSION_VALUE,
- version_value);
- if (err)
- goto nla_put_failure;
-
- nla_nest_end(req->msg, nest);
-
- return 0;
-
-nla_put_failure:
- nla_nest_cancel(req->msg, nest);
- return err;
-}
-
-int devlink_info_version_fixed_put(struct devlink_info_req *req,
- const char *version_name,
- const char *version_value)
-{
- return devlink_info_version_put(req, DEVLINK_ATTR_INFO_VERSION_FIXED,
- version_name, version_value,
- DEVLINK_INFO_VERSION_TYPE_NONE);
-}
-EXPORT_SYMBOL_GPL(devlink_info_version_fixed_put);
-
-int devlink_info_version_stored_put(struct devlink_info_req *req,
- const char *version_name,
- const char *version_value)
-{
- return devlink_info_version_put(req, DEVLINK_ATTR_INFO_VERSION_STORED,
- version_name, version_value,
- DEVLINK_INFO_VERSION_TYPE_NONE);
-}
-EXPORT_SYMBOL_GPL(devlink_info_version_stored_put);
-
-int devlink_info_version_stored_put_ext(struct devlink_info_req *req,
- const char *version_name,
- const char *version_value,
- enum devlink_info_version_type version_type)
-{
- return devlink_info_version_put(req, DEVLINK_ATTR_INFO_VERSION_STORED,
- version_name, version_value,
- version_type);
-}
-EXPORT_SYMBOL_GPL(devlink_info_version_stored_put_ext);
-
-int devlink_info_version_running_put(struct devlink_info_req *req,
- const char *version_name,
- const char *version_value)
-{
- return devlink_info_version_put(req, DEVLINK_ATTR_INFO_VERSION_RUNNING,
- version_name, version_value,
- DEVLINK_INFO_VERSION_TYPE_NONE);
-}
-EXPORT_SYMBOL_GPL(devlink_info_version_running_put);
-
-int devlink_info_version_running_put_ext(struct devlink_info_req *req,
- const char *version_name,
- const char *version_value,
- enum devlink_info_version_type version_type)
-{
- return devlink_info_version_put(req, DEVLINK_ATTR_INFO_VERSION_RUNNING,
- version_name, version_value,
- version_type);
-}
-EXPORT_SYMBOL_GPL(devlink_info_version_running_put_ext);
-
-static int
-devlink_nl_info_fill(struct sk_buff *msg, struct devlink *devlink,
- enum devlink_command cmd, u32 portid,
- u32 seq, int flags, struct netlink_ext_ack *extack)
-{
- struct devlink_info_req req = {};
- void *hdr;
- int err;
-
- hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
- if (!hdr)
- return -EMSGSIZE;
-
- err = -EMSGSIZE;
- if (devlink_nl_put_handle(msg, devlink))
- goto err_cancel_msg;
-
- req.msg = msg;
- err = devlink->ops->info_get(devlink, &req, extack);
- if (err)
- goto err_cancel_msg;
-
- genlmsg_end(msg, hdr);
- return 0;
-
-err_cancel_msg:
- genlmsg_cancel(msg, hdr);
- return err;
-}
-
-static int devlink_nl_cmd_info_get_doit(struct sk_buff *skb,
- struct genl_info *info)
-{
- struct devlink *devlink = info->user_ptr[0];
- struct sk_buff *msg;
- int err;
-
- if (!devlink->ops->info_get)
- return -EOPNOTSUPP;
-
- msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
- if (!msg)
- return -ENOMEM;
-
- err = devlink_nl_info_fill(msg, devlink, DEVLINK_CMD_INFO_GET,
- info->snd_portid, info->snd_seq, 0,
- info->extack);
- if (err) {
- nlmsg_free(msg);
- return err;
- }
-
- return genlmsg_reply(msg, info);
-}
-
-static int devlink_nl_cmd_info_get_dumpit(struct sk_buff *msg,
- struct netlink_callback *cb)
-{
- struct devlink *devlink;
- int start = cb->args[0];
- unsigned long index;
- int idx = 0;
- int err = 0;
-
- devlinks_xa_for_each_registered_get(sock_net(msg->sk), index, devlink) {
- if (idx < start || !devlink->ops->info_get)
- goto inc;
-
- devl_lock(devlink);
- err = devlink_nl_info_fill(msg, devlink, DEVLINK_CMD_INFO_GET,
- NETLINK_CB(cb->skb).portid,
- cb->nlh->nlmsg_seq, NLM_F_MULTI,
- cb->extack);
- devl_unlock(devlink);
- if (err == -EOPNOTSUPP)
- err = 0;
- else if (err) {
- devlink_put(devlink);
- break;
- }
-inc:
- idx++;
- devlink_put(devlink);
- }
-
- if (err != -EMSGSIZE)
- return err;
-
- cb->args[0] = idx;
- return msg->len;
-}
-
-struct devlink_fmsg_item {
- struct list_head list;
- int attrtype;
- u8 nla_type;
- u16 len;
- int value[];
-};
-
-struct devlink_fmsg {
- struct list_head item_list;
- bool putting_binary; /* This flag forces enclosing of binary data
- * in an array brackets. It forces using
- * of designated API:
- * devlink_fmsg_binary_pair_nest_start()
- * devlink_fmsg_binary_pair_nest_end()
- */
-};
-
-static struct devlink_fmsg *devlink_fmsg_alloc(void)
-{
- struct devlink_fmsg *fmsg;
-
- fmsg = kzalloc(sizeof(*fmsg), GFP_KERNEL);
- if (!fmsg)
- return NULL;
-
- INIT_LIST_HEAD(&fmsg->item_list);
-
- return fmsg;
-}
-
-static void devlink_fmsg_free(struct devlink_fmsg *fmsg)
-{
- struct devlink_fmsg_item *item, *tmp;
-
- list_for_each_entry_safe(item, tmp, &fmsg->item_list, list) {
- list_del(&item->list);
- kfree(item);
- }
- kfree(fmsg);
-}
-
-static int devlink_fmsg_nest_common(struct devlink_fmsg *fmsg,
- int attrtype)
-{
- struct devlink_fmsg_item *item;
-
- item = kzalloc(sizeof(*item), GFP_KERNEL);
- if (!item)
- return -ENOMEM;
-
- item->attrtype = attrtype;
- list_add_tail(&item->list, &fmsg->item_list);
-
- return 0;
-}
-
-int devlink_fmsg_obj_nest_start(struct devlink_fmsg *fmsg)
-{
- if (fmsg->putting_binary)
- return -EINVAL;
-
- return devlink_fmsg_nest_common(fmsg, DEVLINK_ATTR_FMSG_OBJ_NEST_START);
-}
-EXPORT_SYMBOL_GPL(devlink_fmsg_obj_nest_start);
-
-static int devlink_fmsg_nest_end(struct devlink_fmsg *fmsg)
-{
- if (fmsg->putting_binary)
- return -EINVAL;
-
- return devlink_fmsg_nest_common(fmsg, DEVLINK_ATTR_FMSG_NEST_END);
-}
-
-int devlink_fmsg_obj_nest_end(struct devlink_fmsg *fmsg)
-{
- if (fmsg->putting_binary)
- return -EINVAL;
-
- return devlink_fmsg_nest_end(fmsg);
-}
-EXPORT_SYMBOL_GPL(devlink_fmsg_obj_nest_end);
-
-#define DEVLINK_FMSG_MAX_SIZE (GENLMSG_DEFAULT_SIZE - GENL_HDRLEN - NLA_HDRLEN)
-
-static int devlink_fmsg_put_name(struct devlink_fmsg *fmsg, const char *name)
-{
- struct devlink_fmsg_item *item;
-
- if (fmsg->putting_binary)
- return -EINVAL;
-
- if (strlen(name) + 1 > DEVLINK_FMSG_MAX_SIZE)
- return -EMSGSIZE;
-
- item = kzalloc(sizeof(*item) + strlen(name) + 1, GFP_KERNEL);
- if (!item)
- return -ENOMEM;
-
- item->nla_type = NLA_NUL_STRING;
- item->len = strlen(name) + 1;
- item->attrtype = DEVLINK_ATTR_FMSG_OBJ_NAME;
- memcpy(&item->value, name, item->len);
- list_add_tail(&item->list, &fmsg->item_list);
-
- return 0;
-}
-
-int devlink_fmsg_pair_nest_start(struct devlink_fmsg *fmsg, const char *name)
-{
- int err;
-
- if (fmsg->putting_binary)
- return -EINVAL;
-
- err = devlink_fmsg_nest_common(fmsg, DEVLINK_ATTR_FMSG_PAIR_NEST_START);
- if (err)
- return err;
-
- err = devlink_fmsg_put_name(fmsg, name);
- if (err)
- return err;
-
- return 0;
-}
-EXPORT_SYMBOL_GPL(devlink_fmsg_pair_nest_start);
-
-int devlink_fmsg_pair_nest_end(struct devlink_fmsg *fmsg)
-{
- if (fmsg->putting_binary)
- return -EINVAL;
-
- return devlink_fmsg_nest_end(fmsg);
-}
-EXPORT_SYMBOL_GPL(devlink_fmsg_pair_nest_end);
-
-int devlink_fmsg_arr_pair_nest_start(struct devlink_fmsg *fmsg,
- const char *name)
-{
- int err;
-
- if (fmsg->putting_binary)
- return -EINVAL;
-
- err = devlink_fmsg_pair_nest_start(fmsg, name);
- if (err)
- return err;
-
- err = devlink_fmsg_nest_common(fmsg, DEVLINK_ATTR_FMSG_ARR_NEST_START);
- if (err)
- return err;
-
- return 0;
-}
-EXPORT_SYMBOL_GPL(devlink_fmsg_arr_pair_nest_start);
-
-int devlink_fmsg_arr_pair_nest_end(struct devlink_fmsg *fmsg)
-{
- int err;
-
- if (fmsg->putting_binary)
- return -EINVAL;
-
- err = devlink_fmsg_nest_end(fmsg);
- if (err)
- return err;
-
- err = devlink_fmsg_nest_end(fmsg);
- if (err)
- return err;
-
- return 0;
-}
-EXPORT_SYMBOL_GPL(devlink_fmsg_arr_pair_nest_end);
-
-int devlink_fmsg_binary_pair_nest_start(struct devlink_fmsg *fmsg,
- const char *name)
-{
- int err;
-
- err = devlink_fmsg_arr_pair_nest_start(fmsg, name);
- if (err)
- return err;
-
- fmsg->putting_binary = true;
- return err;
-}
-EXPORT_SYMBOL_GPL(devlink_fmsg_binary_pair_nest_start);
-
-int devlink_fmsg_binary_pair_nest_end(struct devlink_fmsg *fmsg)
-{
- if (!fmsg->putting_binary)
- return -EINVAL;
-
- fmsg->putting_binary = false;
- return devlink_fmsg_arr_pair_nest_end(fmsg);
-}
-EXPORT_SYMBOL_GPL(devlink_fmsg_binary_pair_nest_end);
-
-static int devlink_fmsg_put_value(struct devlink_fmsg *fmsg,
- const void *value, u16 value_len,
- u8 value_nla_type)
-{
- struct devlink_fmsg_item *item;
-
- if (value_len > DEVLINK_FMSG_MAX_SIZE)
- return -EMSGSIZE;
-
- item = kzalloc(sizeof(*item) + value_len, GFP_KERNEL);
- if (!item)
- return -ENOMEM;
-
- item->nla_type = value_nla_type;
- item->len = value_len;
- item->attrtype = DEVLINK_ATTR_FMSG_OBJ_VALUE_DATA;
- memcpy(&item->value, value, item->len);
- list_add_tail(&item->list, &fmsg->item_list);
-
- return 0;
-}
-
-static int devlink_fmsg_bool_put(struct devlink_fmsg *fmsg, bool value)
-{
- if (fmsg->putting_binary)
- return -EINVAL;
-
- return devlink_fmsg_put_value(fmsg, &value, sizeof(value), NLA_FLAG);
-}
-
-static int devlink_fmsg_u8_put(struct devlink_fmsg *fmsg, u8 value)
-{
- if (fmsg->putting_binary)
- return -EINVAL;
-
- return devlink_fmsg_put_value(fmsg, &value, sizeof(value), NLA_U8);
-}
-
-int devlink_fmsg_u32_put(struct devlink_fmsg *fmsg, u32 value)
-{
- if (fmsg->putting_binary)
- return -EINVAL;
-
- return devlink_fmsg_put_value(fmsg, &value, sizeof(value), NLA_U32);
-}
-EXPORT_SYMBOL_GPL(devlink_fmsg_u32_put);
-
-static int devlink_fmsg_u64_put(struct devlink_fmsg *fmsg, u64 value)
-{
- if (fmsg->putting_binary)
- return -EINVAL;
-
- return devlink_fmsg_put_value(fmsg, &value, sizeof(value), NLA_U64);
-}
-
-int devlink_fmsg_string_put(struct devlink_fmsg *fmsg, const char *value)
-{
- if (fmsg->putting_binary)
- return -EINVAL;
-
- return devlink_fmsg_put_value(fmsg, value, strlen(value) + 1,
- NLA_NUL_STRING);
-}
-EXPORT_SYMBOL_GPL(devlink_fmsg_string_put);
-
-int devlink_fmsg_binary_put(struct devlink_fmsg *fmsg, const void *value,
- u16 value_len)
-{
- if (!fmsg->putting_binary)
- return -EINVAL;
-
- return devlink_fmsg_put_value(fmsg, value, value_len, NLA_BINARY);
-}
-EXPORT_SYMBOL_GPL(devlink_fmsg_binary_put);
-
-int devlink_fmsg_bool_pair_put(struct devlink_fmsg *fmsg, const char *name,
- bool value)
-{
- int err;
-
- err = devlink_fmsg_pair_nest_start(fmsg, name);
- if (err)
- return err;
-
- err = devlink_fmsg_bool_put(fmsg, value);
- if (err)
- return err;
-
- err = devlink_fmsg_pair_nest_end(fmsg);
- if (err)
- return err;
-
- return 0;
-}
-EXPORT_SYMBOL_GPL(devlink_fmsg_bool_pair_put);
-
-int devlink_fmsg_u8_pair_put(struct devlink_fmsg *fmsg, const char *name,
- u8 value)
-{
- int err;
-
- err = devlink_fmsg_pair_nest_start(fmsg, name);
- if (err)
- return err;
-
- err = devlink_fmsg_u8_put(fmsg, value);
- if (err)
- return err;
-
- err = devlink_fmsg_pair_nest_end(fmsg);
- if (err)
- return err;
-
- return 0;
-}
-EXPORT_SYMBOL_GPL(devlink_fmsg_u8_pair_put);
-
-int devlink_fmsg_u32_pair_put(struct devlink_fmsg *fmsg, const char *name,
- u32 value)
-{
- int err;
-
- err = devlink_fmsg_pair_nest_start(fmsg, name);
- if (err)
- return err;
-
- err = devlink_fmsg_u32_put(fmsg, value);
- if (err)
- return err;
-
- err = devlink_fmsg_pair_nest_end(fmsg);
- if (err)
- return err;
-
- return 0;
-}
-EXPORT_SYMBOL_GPL(devlink_fmsg_u32_pair_put);
-
-int devlink_fmsg_u64_pair_put(struct devlink_fmsg *fmsg, const char *name,
- u64 value)
-{
- int err;
-
- err = devlink_fmsg_pair_nest_start(fmsg, name);
- if (err)
- return err;
-
- err = devlink_fmsg_u64_put(fmsg, value);
- if (err)
- return err;
-
- err = devlink_fmsg_pair_nest_end(fmsg);
- if (err)
- return err;
-
- return 0;
-}
-EXPORT_SYMBOL_GPL(devlink_fmsg_u64_pair_put);
-
-int devlink_fmsg_string_pair_put(struct devlink_fmsg *fmsg, const char *name,
- const char *value)
-{
- int err;
-
- err = devlink_fmsg_pair_nest_start(fmsg, name);
- if (err)
- return err;
-
- err = devlink_fmsg_string_put(fmsg, value);
- if (err)
- return err;
-
- err = devlink_fmsg_pair_nest_end(fmsg);
- if (err)
- return err;
-
- return 0;
-}
-EXPORT_SYMBOL_GPL(devlink_fmsg_string_pair_put);
-
-int devlink_fmsg_binary_pair_put(struct devlink_fmsg *fmsg, const char *name,
- const void *value, u32 value_len)
-{
- u32 data_size;
- int end_err;
- u32 offset;
- int err;
-
- err = devlink_fmsg_binary_pair_nest_start(fmsg, name);
- if (err)
- return err;
-
- for (offset = 0; offset < value_len; offset += data_size) {
- data_size = value_len - offset;
- if (data_size > DEVLINK_FMSG_MAX_SIZE)
- data_size = DEVLINK_FMSG_MAX_SIZE;
- err = devlink_fmsg_binary_put(fmsg, value + offset, data_size);
- if (err)
- break;
- /* Exit from loop with a break (instead of
- * return) to make sure putting_binary is turned off in
- * devlink_fmsg_binary_pair_nest_end
- */
- }
-
- end_err = devlink_fmsg_binary_pair_nest_end(fmsg);
- if (end_err)
- err = end_err;
-
- return err;
-}
-EXPORT_SYMBOL_GPL(devlink_fmsg_binary_pair_put);
-
-static int
-devlink_fmsg_item_fill_type(struct devlink_fmsg_item *msg, struct sk_buff *skb)
-{
- switch (msg->nla_type) {
- case NLA_FLAG:
- case NLA_U8:
- case NLA_U32:
- case NLA_U64:
- case NLA_NUL_STRING:
- case NLA_BINARY:
- return nla_put_u8(skb, DEVLINK_ATTR_FMSG_OBJ_VALUE_TYPE,
- msg->nla_type);
- default:
- return -EINVAL;
- }
-}
-
-static int
-devlink_fmsg_item_fill_data(struct devlink_fmsg_item *msg, struct sk_buff *skb)
-{
- int attrtype = DEVLINK_ATTR_FMSG_OBJ_VALUE_DATA;
- u8 tmp;
-
- switch (msg->nla_type) {
- case NLA_FLAG:
- /* Always provide flag data, regardless of its value */
- tmp = *(bool *) msg->value;
-
- return nla_put_u8(skb, attrtype, tmp);
- case NLA_U8:
- return nla_put_u8(skb, attrtype, *(u8 *) msg->value);
- case NLA_U32:
- return nla_put_u32(skb, attrtype, *(u32 *) msg->value);
- case NLA_U64:
- return nla_put_u64_64bit(skb, attrtype, *(u64 *) msg->value,
- DEVLINK_ATTR_PAD);
- case NLA_NUL_STRING:
- return nla_put_string(skb, attrtype, (char *) &msg->value);
- case NLA_BINARY:
- return nla_put(skb, attrtype, msg->len, (void *) &msg->value);
- default:
- return -EINVAL;
- }
-}
-
-static int
-devlink_fmsg_prepare_skb(struct devlink_fmsg *fmsg, struct sk_buff *skb,
- int *start)
-{
- struct devlink_fmsg_item *item;
- struct nlattr *fmsg_nlattr;
- int i = 0;
- int err;
-
- fmsg_nlattr = nla_nest_start_noflag(skb, DEVLINK_ATTR_FMSG);
- if (!fmsg_nlattr)
- return -EMSGSIZE;
-
- list_for_each_entry(item, &fmsg->item_list, list) {
- if (i < *start) {
- i++;
- continue;
- }
-
- switch (item->attrtype) {
- case DEVLINK_ATTR_FMSG_OBJ_NEST_START:
- case DEVLINK_ATTR_FMSG_PAIR_NEST_START:
- case DEVLINK_ATTR_FMSG_ARR_NEST_START:
- case DEVLINK_ATTR_FMSG_NEST_END:
- err = nla_put_flag(skb, item->attrtype);
- break;
- case DEVLINK_ATTR_FMSG_OBJ_VALUE_DATA:
- err = devlink_fmsg_item_fill_type(item, skb);
- if (err)
- break;
- err = devlink_fmsg_item_fill_data(item, skb);
- break;
- case DEVLINK_ATTR_FMSG_OBJ_NAME:
- err = nla_put_string(skb, item->attrtype,
- (char *) &item->value);
- break;
- default:
- err = -EINVAL;
- break;
- }
- if (!err)
- *start = ++i;
- else
- break;
- }
-
- nla_nest_end(skb, fmsg_nlattr);
- return err;
-}
-
-static int devlink_fmsg_snd(struct devlink_fmsg *fmsg,
- struct genl_info *info,
- enum devlink_command cmd, int flags)
-{
- struct nlmsghdr *nlh;
- struct sk_buff *skb;
- bool last = false;
- int index = 0;
- void *hdr;
- int err;
-
- while (!last) {
- int tmp_index = index;
-
- skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_KERNEL);
- if (!skb)
- return -ENOMEM;
-
- hdr = genlmsg_put(skb, info->snd_portid, info->snd_seq,
- &devlink_nl_family, flags | NLM_F_MULTI, cmd);
- if (!hdr) {
- err = -EMSGSIZE;
- goto nla_put_failure;
- }
-
- err = devlink_fmsg_prepare_skb(fmsg, skb, &index);
- if (!err)
- last = true;
- else if (err != -EMSGSIZE || tmp_index == index)
- goto nla_put_failure;
-
- genlmsg_end(skb, hdr);
- err = genlmsg_reply(skb, info);
- if (err)
- return err;
- }
-
- skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_KERNEL);
- if (!skb)
- return -ENOMEM;
- nlh = nlmsg_put(skb, info->snd_portid, info->snd_seq,
- NLMSG_DONE, 0, flags | NLM_F_MULTI);
- if (!nlh) {
- err = -EMSGSIZE;
- goto nla_put_failure;
- }
-
- return genlmsg_reply(skb, info);
-
-nla_put_failure:
- nlmsg_free(skb);
- return err;
-}
-
-static int devlink_fmsg_dumpit(struct devlink_fmsg *fmsg, struct sk_buff *skb,
- struct netlink_callback *cb,
- enum devlink_command cmd)
-{
- int index = cb->args[0];
- int tmp_index = index;
- void *hdr;
- int err;
-
- hdr = genlmsg_put(skb, NETLINK_CB(cb->skb).portid, cb->nlh->nlmsg_seq,
- &devlink_nl_family, NLM_F_ACK | NLM_F_MULTI, cmd);
- if (!hdr) {
- err = -EMSGSIZE;
- goto nla_put_failure;
- }
-
- err = devlink_fmsg_prepare_skb(fmsg, skb, &index);
- if ((err && err != -EMSGSIZE) || tmp_index == index)
- goto nla_put_failure;
-
- cb->args[0] = index;
- genlmsg_end(skb, hdr);
- return skb->len;
-
-nla_put_failure:
- genlmsg_cancel(skb, hdr);
- return err;
-}
-
-struct devlink_health_reporter {
- struct list_head list;
- void *priv;
- const struct devlink_health_reporter_ops *ops;
- struct devlink *devlink;
- struct devlink_port *devlink_port;
- struct devlink_fmsg *dump_fmsg;
- struct mutex dump_lock; /* lock parallel read/write from dump buffers */
- u64 graceful_period;
- bool auto_recover;
- bool auto_dump;
- u8 health_state;
- u64 dump_ts;
- u64 dump_real_ts;
- u64 error_count;
- u64 recovery_count;
- u64 last_recovery_ts;
- refcount_t refcount;
-};
-
-void *
-devlink_health_reporter_priv(struct devlink_health_reporter *reporter)
-{
- return reporter->priv;
-}
-EXPORT_SYMBOL_GPL(devlink_health_reporter_priv);
-
-static struct devlink_health_reporter *
-__devlink_health_reporter_find_by_name(struct list_head *reporter_list,
- struct mutex *list_lock,
- const char *reporter_name)
-{
- struct devlink_health_reporter *reporter;
-
- lockdep_assert_held(list_lock);
- list_for_each_entry(reporter, reporter_list, list)
- if (!strcmp(reporter->ops->name, reporter_name))
- return reporter;
- return NULL;
-}
-
-static struct devlink_health_reporter *
-devlink_health_reporter_find_by_name(struct devlink *devlink,
- const char *reporter_name)
-{
- return __devlink_health_reporter_find_by_name(&devlink->reporter_list,
- &devlink->reporters_lock,
- reporter_name);
-}
-
-static struct devlink_health_reporter *
-devlink_port_health_reporter_find_by_name(struct devlink_port *devlink_port,
- const char *reporter_name)
-{
- return __devlink_health_reporter_find_by_name(&devlink_port->reporter_list,
- &devlink_port->reporters_lock,
- reporter_name);
-}
-
-static struct devlink_health_reporter *
-__devlink_health_reporter_create(struct devlink *devlink,
- const struct devlink_health_reporter_ops *ops,
- u64 graceful_period, void *priv)
-{
- struct devlink_health_reporter *reporter;
-
- if (WARN_ON(graceful_period && !ops->recover))
- return ERR_PTR(-EINVAL);
-
- reporter = kzalloc(sizeof(*reporter), GFP_KERNEL);
- if (!reporter)
- return ERR_PTR(-ENOMEM);
-
- reporter->priv = priv;
- reporter->ops = ops;
- reporter->devlink = devlink;
- reporter->graceful_period = graceful_period;
- reporter->auto_recover = !!ops->recover;
- reporter->auto_dump = !!ops->dump;
- mutex_init(&reporter->dump_lock);
- refcount_set(&reporter->refcount, 1);
- return reporter;
-}
-
-/**
- * devlink_port_health_reporter_create - create devlink health reporter for
- * specified port instance
- *
- * @port: devlink_port which should contain the new reporter
- * @ops: ops
- * @graceful_period: to avoid recovery loops, in msecs
- * @priv: priv
- */
-struct devlink_health_reporter *
-devlink_port_health_reporter_create(struct devlink_port *port,
- const struct devlink_health_reporter_ops *ops,
- u64 graceful_period, void *priv)
-{
- struct devlink_health_reporter *reporter;
-
- mutex_lock(&port->reporters_lock);
- if (__devlink_health_reporter_find_by_name(&port->reporter_list,
- &port->reporters_lock, ops->name)) {
- reporter = ERR_PTR(-EEXIST);
- goto unlock;
- }
-
- reporter = __devlink_health_reporter_create(port->devlink, ops,
- graceful_period, priv);
- if (IS_ERR(reporter))
- goto unlock;
-
- reporter->devlink_port = port;
- list_add_tail(&reporter->list, &port->reporter_list);
-unlock:
- mutex_unlock(&port->reporters_lock);
- return reporter;
-}
-EXPORT_SYMBOL_GPL(devlink_port_health_reporter_create);
-
-/**
- * devlink_health_reporter_create - create devlink health reporter
- *
- * @devlink: devlink
- * @ops: ops
- * @graceful_period: to avoid recovery loops, in msecs
- * @priv: priv
- */
-struct devlink_health_reporter *
-devlink_health_reporter_create(struct devlink *devlink,
- const struct devlink_health_reporter_ops *ops,
- u64 graceful_period, void *priv)
-{
- struct devlink_health_reporter *reporter;
-
- mutex_lock(&devlink->reporters_lock);
- if (devlink_health_reporter_find_by_name(devlink, ops->name)) {
- reporter = ERR_PTR(-EEXIST);
- goto unlock;
- }
-
- reporter = __devlink_health_reporter_create(devlink, ops,
- graceful_period, priv);
- if (IS_ERR(reporter))
- goto unlock;
-
- list_add_tail(&reporter->list, &devlink->reporter_list);
-unlock:
- mutex_unlock(&devlink->reporters_lock);
- return reporter;
-}
-EXPORT_SYMBOL_GPL(devlink_health_reporter_create);
-
-static void
-devlink_health_reporter_free(struct devlink_health_reporter *reporter)
-{
- mutex_destroy(&reporter->dump_lock);
- if (reporter->dump_fmsg)
- devlink_fmsg_free(reporter->dump_fmsg);
- kfree(reporter);
-}
-
-static void
-devlink_health_reporter_put(struct devlink_health_reporter *reporter)
-{
- if (refcount_dec_and_test(&reporter->refcount))
- devlink_health_reporter_free(reporter);
-}
-
-static void
-__devlink_health_reporter_destroy(struct devlink_health_reporter *reporter)
-{
- list_del(&reporter->list);
- devlink_health_reporter_put(reporter);
-}
-
-/**
- * devlink_health_reporter_destroy - destroy devlink health reporter
- *
- * @reporter: devlink health reporter to destroy
- */
-void
-devlink_health_reporter_destroy(struct devlink_health_reporter *reporter)
-{
- struct mutex *lock = &reporter->devlink->reporters_lock;
-
- mutex_lock(lock);
- __devlink_health_reporter_destroy(reporter);
- mutex_unlock(lock);
-}
-EXPORT_SYMBOL_GPL(devlink_health_reporter_destroy);
-
-/**
- * devlink_port_health_reporter_destroy - destroy devlink port health reporter
- *
- * @reporter: devlink health reporter to destroy
- */
-void
-devlink_port_health_reporter_destroy(struct devlink_health_reporter *reporter)
-{
- struct mutex *lock = &reporter->devlink_port->reporters_lock;
-
- mutex_lock(lock);
- __devlink_health_reporter_destroy(reporter);
- mutex_unlock(lock);
-}
-EXPORT_SYMBOL_GPL(devlink_port_health_reporter_destroy);
-
-static int
-devlink_nl_health_reporter_fill(struct sk_buff *msg,
- struct devlink_health_reporter *reporter,
- enum devlink_command cmd, u32 portid,
- u32 seq, int flags)
-{
- struct devlink *devlink = reporter->devlink;
- struct nlattr *reporter_attr;
- void *hdr;
-
- hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
- if (!hdr)
- return -EMSGSIZE;
-
- if (devlink_nl_put_handle(msg, devlink))
- goto genlmsg_cancel;
-
- if (reporter->devlink_port) {
- if (nla_put_u32(msg, DEVLINK_ATTR_PORT_INDEX, reporter->devlink_port->index))
- goto genlmsg_cancel;
- }
- reporter_attr = nla_nest_start_noflag(msg,
- DEVLINK_ATTR_HEALTH_REPORTER);
- if (!reporter_attr)
- goto genlmsg_cancel;
- if (nla_put_string(msg, DEVLINK_ATTR_HEALTH_REPORTER_NAME,
- reporter->ops->name))
- goto reporter_nest_cancel;
- if (nla_put_u8(msg, DEVLINK_ATTR_HEALTH_REPORTER_STATE,
- reporter->health_state))
- goto reporter_nest_cancel;
- if (nla_put_u64_64bit(msg, DEVLINK_ATTR_HEALTH_REPORTER_ERR_COUNT,
- reporter->error_count, DEVLINK_ATTR_PAD))
- goto reporter_nest_cancel;
- if (nla_put_u64_64bit(msg, DEVLINK_ATTR_HEALTH_REPORTER_RECOVER_COUNT,
- reporter->recovery_count, DEVLINK_ATTR_PAD))
- goto reporter_nest_cancel;
- if (reporter->ops->recover &&
- nla_put_u64_64bit(msg, DEVLINK_ATTR_HEALTH_REPORTER_GRACEFUL_PERIOD,
- reporter->graceful_period,
- DEVLINK_ATTR_PAD))
- goto reporter_nest_cancel;
- if (reporter->ops->recover &&
- nla_put_u8(msg, DEVLINK_ATTR_HEALTH_REPORTER_AUTO_RECOVER,
- reporter->auto_recover))
- goto reporter_nest_cancel;
- if (reporter->dump_fmsg &&
- nla_put_u64_64bit(msg, DEVLINK_ATTR_HEALTH_REPORTER_DUMP_TS,
- jiffies_to_msecs(reporter->dump_ts),
- DEVLINK_ATTR_PAD))
- goto reporter_nest_cancel;
- if (reporter->dump_fmsg &&
- nla_put_u64_64bit(msg, DEVLINK_ATTR_HEALTH_REPORTER_DUMP_TS_NS,
- reporter->dump_real_ts, DEVLINK_ATTR_PAD))
- goto reporter_nest_cancel;
- if (reporter->ops->dump &&
- nla_put_u8(msg, DEVLINK_ATTR_HEALTH_REPORTER_AUTO_DUMP,
- reporter->auto_dump))
- goto reporter_nest_cancel;
-
- nla_nest_end(msg, reporter_attr);
- genlmsg_end(msg, hdr);
- return 0;
-
-reporter_nest_cancel:
- nla_nest_end(msg, reporter_attr);
-genlmsg_cancel:
- genlmsg_cancel(msg, hdr);
- return -EMSGSIZE;
-}
-
-static void devlink_recover_notify(struct devlink_health_reporter *reporter,
- enum devlink_command cmd)
-{
- struct devlink *devlink = reporter->devlink;
- struct sk_buff *msg;
- int err;
-
- WARN_ON(cmd != DEVLINK_CMD_HEALTH_REPORTER_RECOVER);
- WARN_ON(!xa_get_mark(&devlinks, devlink->index, DEVLINK_REGISTERED));
-
- msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
- if (!msg)
- return;
-
- err = devlink_nl_health_reporter_fill(msg, reporter, cmd, 0, 0, 0);
- if (err) {
- nlmsg_free(msg);
- return;
- }
-
- genlmsg_multicast_netns(&devlink_nl_family, devlink_net(devlink), msg,
- 0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL);
-}
-
-void
-devlink_health_reporter_recovery_done(struct devlink_health_reporter *reporter)
-{
- reporter->recovery_count++;
- reporter->last_recovery_ts = jiffies;
-}
-EXPORT_SYMBOL_GPL(devlink_health_reporter_recovery_done);
-
-static int
-devlink_health_reporter_recover(struct devlink_health_reporter *reporter,
- void *priv_ctx, struct netlink_ext_ack *extack)
-{
- int err;
-
- if (reporter->health_state == DEVLINK_HEALTH_REPORTER_STATE_HEALTHY)
- return 0;
-
- if (!reporter->ops->recover)
- return -EOPNOTSUPP;
-
- err = reporter->ops->recover(reporter, priv_ctx, extack);
- if (err)
- return err;
-
- devlink_health_reporter_recovery_done(reporter);
- reporter->health_state = DEVLINK_HEALTH_REPORTER_STATE_HEALTHY;
- devlink_recover_notify(reporter, DEVLINK_CMD_HEALTH_REPORTER_RECOVER);
-
- return 0;
-}
-
-static void
-devlink_health_dump_clear(struct devlink_health_reporter *reporter)
-{
- if (!reporter->dump_fmsg)
- return;
- devlink_fmsg_free(reporter->dump_fmsg);
- reporter->dump_fmsg = NULL;
-}
-
-static int devlink_health_do_dump(struct devlink_health_reporter *reporter,
- void *priv_ctx,
- struct netlink_ext_ack *extack)
-{
- int err;
-
- if (!reporter->ops->dump)
- return 0;
-
- if (reporter->dump_fmsg)
- return 0;
-
- reporter->dump_fmsg = devlink_fmsg_alloc();
- if (!reporter->dump_fmsg) {
- err = -ENOMEM;
- return err;
- }
-
- err = devlink_fmsg_obj_nest_start(reporter->dump_fmsg);
- if (err)
- goto dump_err;
-
- err = reporter->ops->dump(reporter, reporter->dump_fmsg,
- priv_ctx, extack);
- if (err)
- goto dump_err;
-
- err = devlink_fmsg_obj_nest_end(reporter->dump_fmsg);
- if (err)
- goto dump_err;
-
- reporter->dump_ts = jiffies;
- reporter->dump_real_ts = ktime_get_real_ns();
-
- return 0;
-
-dump_err:
- devlink_health_dump_clear(reporter);
- return err;
-}
-
-int devlink_health_report(struct devlink_health_reporter *reporter,
- const char *msg, void *priv_ctx)
-{
- enum devlink_health_reporter_state prev_health_state;
- struct devlink *devlink = reporter->devlink;
- unsigned long recover_ts_threshold;
- int ret;
-
- /* write a log message of the current error */
- WARN_ON(!msg);
- trace_devlink_health_report(devlink, reporter->ops->name, msg);
- reporter->error_count++;
- prev_health_state = reporter->health_state;
- reporter->health_state = DEVLINK_HEALTH_REPORTER_STATE_ERROR;
- devlink_recover_notify(reporter, DEVLINK_CMD_HEALTH_REPORTER_RECOVER);
-
- /* abort if the previous error wasn't recovered */
- recover_ts_threshold = reporter->last_recovery_ts +
- msecs_to_jiffies(reporter->graceful_period);
- if (reporter->auto_recover &&
- (prev_health_state != DEVLINK_HEALTH_REPORTER_STATE_HEALTHY ||
- (reporter->last_recovery_ts && reporter->recovery_count &&
- time_is_after_jiffies(recover_ts_threshold)))) {
- trace_devlink_health_recover_aborted(devlink,
- reporter->ops->name,
- reporter->health_state,
- jiffies -
- reporter->last_recovery_ts);
- return -ECANCELED;
- }
-
- reporter->health_state = DEVLINK_HEALTH_REPORTER_STATE_ERROR;
-
- if (reporter->auto_dump) {
- mutex_lock(&reporter->dump_lock);
- /* store current dump of current error, for later analysis */
- devlink_health_do_dump(reporter, priv_ctx, NULL);
- mutex_unlock(&reporter->dump_lock);
- }
-
- if (!reporter->auto_recover)
- return 0;
-
- devl_lock(devlink);
- ret = devlink_health_reporter_recover(reporter, priv_ctx, NULL);
- devl_unlock(devlink);
-
- return ret;
-}
-EXPORT_SYMBOL_GPL(devlink_health_report);
-
-static struct devlink_health_reporter *
-devlink_health_reporter_get_from_attrs(struct devlink *devlink,
- struct nlattr **attrs)
-{
- struct devlink_health_reporter *reporter;
- struct devlink_port *devlink_port;
- char *reporter_name;
-
- if (!attrs[DEVLINK_ATTR_HEALTH_REPORTER_NAME])
- return NULL;
-
- reporter_name = nla_data(attrs[DEVLINK_ATTR_HEALTH_REPORTER_NAME]);
- devlink_port = devlink_port_get_from_attrs(devlink, attrs);
- if (IS_ERR(devlink_port)) {
- mutex_lock(&devlink->reporters_lock);
- reporter = devlink_health_reporter_find_by_name(devlink, reporter_name);
- if (reporter)
- refcount_inc(&reporter->refcount);
- mutex_unlock(&devlink->reporters_lock);
- } else {
- mutex_lock(&devlink_port->reporters_lock);
- reporter = devlink_port_health_reporter_find_by_name(devlink_port, reporter_name);
- if (reporter)
- refcount_inc(&reporter->refcount);
- mutex_unlock(&devlink_port->reporters_lock);
- }
-
- return reporter;
-}
-
-static struct devlink_health_reporter *
-devlink_health_reporter_get_from_info(struct devlink *devlink,
- struct genl_info *info)
-{
- return devlink_health_reporter_get_from_attrs(devlink, info->attrs);
-}
-
-static struct devlink_health_reporter *
-devlink_health_reporter_get_from_cb(struct netlink_callback *cb)
-{
- const struct genl_dumpit_info *info = genl_dumpit_info(cb);
- struct devlink_health_reporter *reporter;
- struct nlattr **attrs = info->attrs;
- struct devlink *devlink;
-
- devlink = devlink_get_from_attrs(sock_net(cb->skb->sk), attrs);
- if (IS_ERR(devlink))
- return NULL;
-
- reporter = devlink_health_reporter_get_from_attrs(devlink, attrs);
- devlink_put(devlink);
- return reporter;
-}
-
-void
-devlink_health_reporter_state_update(struct devlink_health_reporter *reporter,
- enum devlink_health_reporter_state state)
-{
- if (WARN_ON(state != DEVLINK_HEALTH_REPORTER_STATE_HEALTHY &&
- state != DEVLINK_HEALTH_REPORTER_STATE_ERROR))
- return;
-
- if (reporter->health_state == state)
- return;
-
- reporter->health_state = state;
- trace_devlink_health_reporter_state_update(reporter->devlink,
- reporter->ops->name, state);
- devlink_recover_notify(reporter, DEVLINK_CMD_HEALTH_REPORTER_RECOVER);
-}
-EXPORT_SYMBOL_GPL(devlink_health_reporter_state_update);
-
-static int devlink_nl_cmd_health_reporter_get_doit(struct sk_buff *skb,
- struct genl_info *info)
-{
- struct devlink *devlink = info->user_ptr[0];
- struct devlink_health_reporter *reporter;
- struct sk_buff *msg;
- int err;
-
- reporter = devlink_health_reporter_get_from_info(devlink, info);
- if (!reporter)
- return -EINVAL;
-
- msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
- if (!msg) {
- err = -ENOMEM;
- goto out;
- }
-
- err = devlink_nl_health_reporter_fill(msg, reporter,
- DEVLINK_CMD_HEALTH_REPORTER_GET,
- info->snd_portid, info->snd_seq,
- 0);
- if (err) {
- nlmsg_free(msg);
- goto out;
- }
-
- err = genlmsg_reply(msg, info);
-out:
- devlink_health_reporter_put(reporter);
- return err;
-}
-
-static int
-devlink_nl_cmd_health_reporter_get_dumpit(struct sk_buff *msg,
- struct netlink_callback *cb)
-{
- struct devlink_health_reporter *reporter;
- struct devlink_port *port;
- struct devlink *devlink;
- int start = cb->args[0];
- unsigned long index;
- int idx = 0;
- int err;
-
- devlinks_xa_for_each_registered_get(sock_net(msg->sk), index, devlink) {
- mutex_lock(&devlink->reporters_lock);
- list_for_each_entry(reporter, &devlink->reporter_list,
- list) {
- if (idx < start) {
- idx++;
- continue;
- }
- err = devlink_nl_health_reporter_fill(
- msg, reporter, DEVLINK_CMD_HEALTH_REPORTER_GET,
- NETLINK_CB(cb->skb).portid, cb->nlh->nlmsg_seq,
- NLM_F_MULTI);
- if (err) {
- mutex_unlock(&devlink->reporters_lock);
- devlink_put(devlink);
- goto out;
- }
- idx++;
- }
- mutex_unlock(&devlink->reporters_lock);
- devlink_put(devlink);
- }
-
- devlinks_xa_for_each_registered_get(sock_net(msg->sk), index, devlink) {
- devl_lock(devlink);
- list_for_each_entry(port, &devlink->port_list, list) {
- mutex_lock(&port->reporters_lock);
- list_for_each_entry(reporter, &port->reporter_list, list) {
- if (idx < start) {
- idx++;
- continue;
- }
- err = devlink_nl_health_reporter_fill(
- msg, reporter,
- DEVLINK_CMD_HEALTH_REPORTER_GET,
- NETLINK_CB(cb->skb).portid,
- cb->nlh->nlmsg_seq, NLM_F_MULTI);
- if (err) {
- mutex_unlock(&port->reporters_lock);
- devl_unlock(devlink);
- devlink_put(devlink);
- goto out;
- }
- idx++;
- }
- mutex_unlock(&port->reporters_lock);
- }
- devl_unlock(devlink);
- devlink_put(devlink);
- }
-out:
- cb->args[0] = idx;
- return msg->len;
-}
-
-static int
-devlink_nl_cmd_health_reporter_set_doit(struct sk_buff *skb,
- struct genl_info *info)
-{
- struct devlink *devlink = info->user_ptr[0];
- struct devlink_health_reporter *reporter;
- int err;
-
- reporter = devlink_health_reporter_get_from_info(devlink, info);
- if (!reporter)
- return -EINVAL;
-
- if (!reporter->ops->recover &&
- (info->attrs[DEVLINK_ATTR_HEALTH_REPORTER_GRACEFUL_PERIOD] ||
- info->attrs[DEVLINK_ATTR_HEALTH_REPORTER_AUTO_RECOVER])) {
- err = -EOPNOTSUPP;
- goto out;
- }
- if (!reporter->ops->dump &&
- info->attrs[DEVLINK_ATTR_HEALTH_REPORTER_AUTO_DUMP]) {
- err = -EOPNOTSUPP;
- goto out;
- }
-
- if (info->attrs[DEVLINK_ATTR_HEALTH_REPORTER_GRACEFUL_PERIOD])
- reporter->graceful_period =
- nla_get_u64(info->attrs[DEVLINK_ATTR_HEALTH_REPORTER_GRACEFUL_PERIOD]);
-
- if (info->attrs[DEVLINK_ATTR_HEALTH_REPORTER_AUTO_RECOVER])
- reporter->auto_recover =
- nla_get_u8(info->attrs[DEVLINK_ATTR_HEALTH_REPORTER_AUTO_RECOVER]);
-
- if (info->attrs[DEVLINK_ATTR_HEALTH_REPORTER_AUTO_DUMP])
- reporter->auto_dump =
- nla_get_u8(info->attrs[DEVLINK_ATTR_HEALTH_REPORTER_AUTO_DUMP]);
-
- devlink_health_reporter_put(reporter);
- return 0;
-out:
- devlink_health_reporter_put(reporter);
- return err;
-}
-
-static int devlink_nl_cmd_health_reporter_recover_doit(struct sk_buff *skb,
- struct genl_info *info)
-{
- struct devlink *devlink = info->user_ptr[0];
- struct devlink_health_reporter *reporter;
- int err;
-
- reporter = devlink_health_reporter_get_from_info(devlink, info);
- if (!reporter)
- return -EINVAL;
-
- err = devlink_health_reporter_recover(reporter, NULL, info->extack);
-
- devlink_health_reporter_put(reporter);
- return err;
-}
-
-static int devlink_nl_cmd_health_reporter_diagnose_doit(struct sk_buff *skb,
- struct genl_info *info)
-{
- struct devlink *devlink = info->user_ptr[0];
- struct devlink_health_reporter *reporter;
- struct devlink_fmsg *fmsg;
- int err;
-
- reporter = devlink_health_reporter_get_from_info(devlink, info);
- if (!reporter)
- return -EINVAL;
-
- if (!reporter->ops->diagnose) {
- devlink_health_reporter_put(reporter);
- return -EOPNOTSUPP;
- }
-
- fmsg = devlink_fmsg_alloc();
- if (!fmsg) {
- devlink_health_reporter_put(reporter);
- return -ENOMEM;
- }
-
- err = devlink_fmsg_obj_nest_start(fmsg);
- if (err)
- goto out;
-
- err = reporter->ops->diagnose(reporter, fmsg, info->extack);
- if (err)
- goto out;
-
- err = devlink_fmsg_obj_nest_end(fmsg);
- if (err)
- goto out;
-
- err = devlink_fmsg_snd(fmsg, info,
- DEVLINK_CMD_HEALTH_REPORTER_DIAGNOSE, 0);
-
-out:
- devlink_fmsg_free(fmsg);
- devlink_health_reporter_put(reporter);
- return err;
-}
-
-static int
-devlink_nl_cmd_health_reporter_dump_get_dumpit(struct sk_buff *skb,
- struct netlink_callback *cb)
-{
- struct devlink_health_reporter *reporter;
- u64 start = cb->args[0];
- int err;
-
- reporter = devlink_health_reporter_get_from_cb(cb);
- if (!reporter)
- return -EINVAL;
-
- if (!reporter->ops->dump) {
- err = -EOPNOTSUPP;
- goto out;
- }
- mutex_lock(&reporter->dump_lock);
- if (!start) {
- err = devlink_health_do_dump(reporter, NULL, cb->extack);
- if (err)
- goto unlock;
- cb->args[1] = reporter->dump_ts;
- }
- if (!reporter->dump_fmsg || cb->args[1] != reporter->dump_ts) {
- NL_SET_ERR_MSG_MOD(cb->extack, "Dump trampled, please retry");
- err = -EAGAIN;
- goto unlock;
- }
-
- err = devlink_fmsg_dumpit(reporter->dump_fmsg, skb, cb,
- DEVLINK_CMD_HEALTH_REPORTER_DUMP_GET);
-unlock:
- mutex_unlock(&reporter->dump_lock);
-out:
- devlink_health_reporter_put(reporter);
- return err;
-}
-
-static int
-devlink_nl_cmd_health_reporter_dump_clear_doit(struct sk_buff *skb,
- struct genl_info *info)
-{
- struct devlink *devlink = info->user_ptr[0];
- struct devlink_health_reporter *reporter;
-
- reporter = devlink_health_reporter_get_from_info(devlink, info);
- if (!reporter)
- return -EINVAL;
-
- if (!reporter->ops->dump) {
- devlink_health_reporter_put(reporter);
- return -EOPNOTSUPP;
- }
-
- mutex_lock(&reporter->dump_lock);
- devlink_health_dump_clear(reporter);
- mutex_unlock(&reporter->dump_lock);
- devlink_health_reporter_put(reporter);
- return 0;
-}
-
-static int devlink_nl_cmd_health_reporter_test_doit(struct sk_buff *skb,
- struct genl_info *info)
-{
- struct devlink *devlink = info->user_ptr[0];
- struct devlink_health_reporter *reporter;
- int err;
-
- reporter = devlink_health_reporter_get_from_info(devlink, info);
- if (!reporter)
- return -EINVAL;
-
- if (!reporter->ops->test) {
- devlink_health_reporter_put(reporter);
- return -EOPNOTSUPP;
- }
-
- err = reporter->ops->test(reporter, info->extack);
-
- devlink_health_reporter_put(reporter);
- return err;
-}
-
-struct devlink_stats {
- u64_stats_t rx_bytes;
- u64_stats_t rx_packets;
- struct u64_stats_sync syncp;
-};
-
-/**
- * struct devlink_trap_policer_item - Packet trap policer attributes.
- * @policer: Immutable packet trap policer attributes.
- * @rate: Rate in packets / sec.
- * @burst: Burst size in packets.
- * @list: trap_policer_list member.
- *
- * Describes packet trap policer attributes. Created by devlink during trap
- * policer registration.
- */
-struct devlink_trap_policer_item {
- const struct devlink_trap_policer *policer;
- u64 rate;
- u64 burst;
- struct list_head list;
-};
-
-/**
- * struct devlink_trap_group_item - Packet trap group attributes.
- * @group: Immutable packet trap group attributes.
- * @policer_item: Associated policer item. Can be NULL.
- * @list: trap_group_list member.
- * @stats: Trap group statistics.
- *
- * Describes packet trap group attributes. Created by devlink during trap
- * group registration.
- */
-struct devlink_trap_group_item {
- const struct devlink_trap_group *group;
- struct devlink_trap_policer_item *policer_item;
- struct list_head list;
- struct devlink_stats __percpu *stats;
-};
-
-/**
- * struct devlink_trap_item - Packet trap attributes.
- * @trap: Immutable packet trap attributes.
- * @group_item: Associated group item.
- * @list: trap_list member.
- * @action: Trap action.
- * @stats: Trap statistics.
- * @priv: Driver private information.
- *
- * Describes both mutable and immutable packet trap attributes. Created by
- * devlink during trap registration and used for all trap related operations.
- */
-struct devlink_trap_item {
- const struct devlink_trap *trap;
- struct devlink_trap_group_item *group_item;
- struct list_head list;
- enum devlink_trap_action action;
- struct devlink_stats __percpu *stats;
- void *priv;
-};
-
-static struct devlink_trap_policer_item *
-devlink_trap_policer_item_lookup(struct devlink *devlink, u32 id)
-{
- struct devlink_trap_policer_item *policer_item;
-
- list_for_each_entry(policer_item, &devlink->trap_policer_list, list) {
- if (policer_item->policer->id == id)
- return policer_item;
- }
-
- return NULL;
-}
-
-static struct devlink_trap_item *
-devlink_trap_item_lookup(struct devlink *devlink, const char *name)
-{
- struct devlink_trap_item *trap_item;
-
- list_for_each_entry(trap_item, &devlink->trap_list, list) {
- if (!strcmp(trap_item->trap->name, name))
- return trap_item;
- }
-
- return NULL;
-}
-
-static struct devlink_trap_item *
-devlink_trap_item_get_from_info(struct devlink *devlink,
- struct genl_info *info)
-{
- struct nlattr *attr;
-
- if (!info->attrs[DEVLINK_ATTR_TRAP_NAME])
- return NULL;
- attr = info->attrs[DEVLINK_ATTR_TRAP_NAME];
-
- return devlink_trap_item_lookup(devlink, nla_data(attr));
-}
-
-static int
-devlink_trap_action_get_from_info(struct genl_info *info,
- enum devlink_trap_action *p_trap_action)
-{
- u8 val;
-
- val = nla_get_u8(info->attrs[DEVLINK_ATTR_TRAP_ACTION]);
- switch (val) {
- case DEVLINK_TRAP_ACTION_DROP:
- case DEVLINK_TRAP_ACTION_TRAP:
- case DEVLINK_TRAP_ACTION_MIRROR:
- *p_trap_action = val;
- break;
- default:
- return -EINVAL;
- }
-
- return 0;
-}
-
-static int devlink_trap_metadata_put(struct sk_buff *msg,
- const struct devlink_trap *trap)
-{
- struct nlattr *attr;
-
- attr = nla_nest_start(msg, DEVLINK_ATTR_TRAP_METADATA);
- if (!attr)
- return -EMSGSIZE;
-
- if ((trap->metadata_cap & DEVLINK_TRAP_METADATA_TYPE_F_IN_PORT) &&
- nla_put_flag(msg, DEVLINK_ATTR_TRAP_METADATA_TYPE_IN_PORT))
- goto nla_put_failure;
- if ((trap->metadata_cap & DEVLINK_TRAP_METADATA_TYPE_F_FA_COOKIE) &&
- nla_put_flag(msg, DEVLINK_ATTR_TRAP_METADATA_TYPE_FA_COOKIE))
- goto nla_put_failure;
-
- nla_nest_end(msg, attr);
-
- return 0;
-
-nla_put_failure:
- nla_nest_cancel(msg, attr);
- return -EMSGSIZE;
-}
-
-static void devlink_trap_stats_read(struct devlink_stats __percpu *trap_stats,
- struct devlink_stats *stats)
-{
- int i;
-
- memset(stats, 0, sizeof(*stats));
- for_each_possible_cpu(i) {
- struct devlink_stats *cpu_stats;
- u64 rx_packets, rx_bytes;
- unsigned int start;
-
- cpu_stats = per_cpu_ptr(trap_stats, i);
- do {
- start = u64_stats_fetch_begin_irq(&cpu_stats->syncp);
- rx_packets = u64_stats_read(&cpu_stats->rx_packets);
- rx_bytes = u64_stats_read(&cpu_stats->rx_bytes);
- } while (u64_stats_fetch_retry_irq(&cpu_stats->syncp, start));
-
- u64_stats_add(&stats->rx_packets, rx_packets);
- u64_stats_add(&stats->rx_bytes, rx_bytes);
- }
-}
-
-static int
-devlink_trap_group_stats_put(struct sk_buff *msg,
- struct devlink_stats __percpu *trap_stats)
-{
- struct devlink_stats stats;
- struct nlattr *attr;
-
- devlink_trap_stats_read(trap_stats, &stats);
-
- attr = nla_nest_start(msg, DEVLINK_ATTR_STATS);
- if (!attr)
- return -EMSGSIZE;
-
- if (nla_put_u64_64bit(msg, DEVLINK_ATTR_STATS_RX_PACKETS,
- u64_stats_read(&stats.rx_packets),
- DEVLINK_ATTR_PAD))
- goto nla_put_failure;
-
- if (nla_put_u64_64bit(msg, DEVLINK_ATTR_STATS_RX_BYTES,
- u64_stats_read(&stats.rx_bytes),
- DEVLINK_ATTR_PAD))
- goto nla_put_failure;
-
- nla_nest_end(msg, attr);
-
- return 0;
-
-nla_put_failure:
- nla_nest_cancel(msg, attr);
- return -EMSGSIZE;
-}
-
-static int devlink_trap_stats_put(struct sk_buff *msg, struct devlink *devlink,
- const struct devlink_trap_item *trap_item)
-{
- struct devlink_stats stats;
- struct nlattr *attr;
- u64 drops = 0;
- int err;
-
- if (devlink->ops->trap_drop_counter_get) {
- err = devlink->ops->trap_drop_counter_get(devlink,
- trap_item->trap,
- &drops);
- if (err)
- return err;
- }
-
- devlink_trap_stats_read(trap_item->stats, &stats);
-
- attr = nla_nest_start(msg, DEVLINK_ATTR_STATS);
- if (!attr)
- return -EMSGSIZE;
-
- if (devlink->ops->trap_drop_counter_get &&
- nla_put_u64_64bit(msg, DEVLINK_ATTR_STATS_RX_DROPPED, drops,
- DEVLINK_ATTR_PAD))
- goto nla_put_failure;
-
- if (nla_put_u64_64bit(msg, DEVLINK_ATTR_STATS_RX_PACKETS,
- u64_stats_read(&stats.rx_packets),
- DEVLINK_ATTR_PAD))
- goto nla_put_failure;
-
- if (nla_put_u64_64bit(msg, DEVLINK_ATTR_STATS_RX_BYTES,
- u64_stats_read(&stats.rx_bytes),
- DEVLINK_ATTR_PAD))
- goto nla_put_failure;
-
- nla_nest_end(msg, attr);
-
- return 0;
-
-nla_put_failure:
- nla_nest_cancel(msg, attr);
- return -EMSGSIZE;
-}
-
-static int devlink_nl_trap_fill(struct sk_buff *msg, struct devlink *devlink,
- const struct devlink_trap_item *trap_item,
- enum devlink_command cmd, u32 portid, u32 seq,
- int flags)
-{
- struct devlink_trap_group_item *group_item = trap_item->group_item;
- void *hdr;
- int err;
-
- hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
- if (!hdr)
- return -EMSGSIZE;
-
- if (devlink_nl_put_handle(msg, devlink))
- goto nla_put_failure;
-
- if (nla_put_string(msg, DEVLINK_ATTR_TRAP_GROUP_NAME,
- group_item->group->name))
- goto nla_put_failure;
-
- if (nla_put_string(msg, DEVLINK_ATTR_TRAP_NAME, trap_item->trap->name))
- goto nla_put_failure;
-
- if (nla_put_u8(msg, DEVLINK_ATTR_TRAP_TYPE, trap_item->trap->type))
- goto nla_put_failure;
-
- if (trap_item->trap->generic &&
- nla_put_flag(msg, DEVLINK_ATTR_TRAP_GENERIC))
- goto nla_put_failure;
-
- if (nla_put_u8(msg, DEVLINK_ATTR_TRAP_ACTION, trap_item->action))
- goto nla_put_failure;
-
- err = devlink_trap_metadata_put(msg, trap_item->trap);
- if (err)
- goto nla_put_failure;
-
- err = devlink_trap_stats_put(msg, devlink, trap_item);
- if (err)
- goto nla_put_failure;
-
- genlmsg_end(msg, hdr);
-
- return 0;
-
-nla_put_failure:
- genlmsg_cancel(msg, hdr);
- return -EMSGSIZE;
-}
-
-static int devlink_nl_cmd_trap_get_doit(struct sk_buff *skb,
- struct genl_info *info)
-{
- struct netlink_ext_ack *extack = info->extack;
- struct devlink *devlink = info->user_ptr[0];
- struct devlink_trap_item *trap_item;
- struct sk_buff *msg;
- int err;
-
- if (list_empty(&devlink->trap_list))
- return -EOPNOTSUPP;
-
- trap_item = devlink_trap_item_get_from_info(devlink, info);
- if (!trap_item) {
- NL_SET_ERR_MSG_MOD(extack, "Device did not register this trap");
- return -ENOENT;
- }
-
- msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
- if (!msg)
- return -ENOMEM;
-
- err = devlink_nl_trap_fill(msg, devlink, trap_item,
- DEVLINK_CMD_TRAP_NEW, info->snd_portid,
- info->snd_seq, 0);
- if (err)
- goto err_trap_fill;
-
- return genlmsg_reply(msg, info);
-
-err_trap_fill:
- nlmsg_free(msg);
- return err;
-}
-
-static int devlink_nl_cmd_trap_get_dumpit(struct sk_buff *msg,
- struct netlink_callback *cb)
-{
- struct devlink_trap_item *trap_item;
- struct devlink *devlink;
- int start = cb->args[0];
- unsigned long index;
- int idx = 0;
- int err;
-
- devlinks_xa_for_each_registered_get(sock_net(msg->sk), index, devlink) {
- devl_lock(devlink);
- list_for_each_entry(trap_item, &devlink->trap_list, list) {
- if (idx < start) {
- idx++;
- continue;
- }
- err = devlink_nl_trap_fill(msg, devlink, trap_item,
- DEVLINK_CMD_TRAP_NEW,
- NETLINK_CB(cb->skb).portid,
- cb->nlh->nlmsg_seq,
- NLM_F_MULTI);
- if (err) {
- devl_unlock(devlink);
- devlink_put(devlink);
- goto out;
- }
- idx++;
- }
- devl_unlock(devlink);
- devlink_put(devlink);
- }
-out:
- cb->args[0] = idx;
- return msg->len;
-}
-
-static int __devlink_trap_action_set(struct devlink *devlink,
- struct devlink_trap_item *trap_item,
- enum devlink_trap_action trap_action,
- struct netlink_ext_ack *extack)
-{
- int err;
-
- if (trap_item->action != trap_action &&
- trap_item->trap->type != DEVLINK_TRAP_TYPE_DROP) {
- NL_SET_ERR_MSG_MOD(extack, "Cannot change action of non-drop traps. Skipping");
- return 0;
- }
-
- err = devlink->ops->trap_action_set(devlink, trap_item->trap,
- trap_action, extack);
- if (err)
- return err;
-
- trap_item->action = trap_action;
-
- return 0;
-}
-
-static int devlink_trap_action_set(struct devlink *devlink,
- struct devlink_trap_item *trap_item,
- struct genl_info *info)
-{
- enum devlink_trap_action trap_action;
- int err;
-
- if (!info->attrs[DEVLINK_ATTR_TRAP_ACTION])
- return 0;
-
- err = devlink_trap_action_get_from_info(info, &trap_action);
- if (err) {
- NL_SET_ERR_MSG_MOD(info->extack, "Invalid trap action");
- return -EINVAL;
- }
-
- return __devlink_trap_action_set(devlink, trap_item, trap_action,
- info->extack);
-}
-
-static int devlink_nl_cmd_trap_set_doit(struct sk_buff *skb,
- struct genl_info *info)
-{
- struct netlink_ext_ack *extack = info->extack;
- struct devlink *devlink = info->user_ptr[0];
- struct devlink_trap_item *trap_item;
-
- if (list_empty(&devlink->trap_list))
- return -EOPNOTSUPP;
-
- trap_item = devlink_trap_item_get_from_info(devlink, info);
- if (!trap_item) {
- NL_SET_ERR_MSG_MOD(extack, "Device did not register this trap");
- return -ENOENT;
- }
-
- return devlink_trap_action_set(devlink, trap_item, info);
-}
-
-static struct devlink_trap_group_item *
-devlink_trap_group_item_lookup(struct devlink *devlink, const char *name)
-{
- struct devlink_trap_group_item *group_item;
-
- list_for_each_entry(group_item, &devlink->trap_group_list, list) {
- if (!strcmp(group_item->group->name, name))
- return group_item;
- }
-
- return NULL;
-}
-
-static struct devlink_trap_group_item *
-devlink_trap_group_item_lookup_by_id(struct devlink *devlink, u16 id)
-{
- struct devlink_trap_group_item *group_item;
-
- list_for_each_entry(group_item, &devlink->trap_group_list, list) {
- if (group_item->group->id == id)
- return group_item;
- }
-
- return NULL;
-}
-
-static struct devlink_trap_group_item *
-devlink_trap_group_item_get_from_info(struct devlink *devlink,
- struct genl_info *info)
-{
- char *name;
-
- if (!info->attrs[DEVLINK_ATTR_TRAP_GROUP_NAME])
- return NULL;
- name = nla_data(info->attrs[DEVLINK_ATTR_TRAP_GROUP_NAME]);
-
- return devlink_trap_group_item_lookup(devlink, name);
-}
-
-static int
-devlink_nl_trap_group_fill(struct sk_buff *msg, struct devlink *devlink,
- const struct devlink_trap_group_item *group_item,
- enum devlink_command cmd, u32 portid, u32 seq,
- int flags)
-{
- void *hdr;
- int err;
-
- hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
- if (!hdr)
- return -EMSGSIZE;
-
- if (devlink_nl_put_handle(msg, devlink))
- goto nla_put_failure;
-
- if (nla_put_string(msg, DEVLINK_ATTR_TRAP_GROUP_NAME,
- group_item->group->name))
- goto nla_put_failure;
-
- if (group_item->group->generic &&
- nla_put_flag(msg, DEVLINK_ATTR_TRAP_GENERIC))
- goto nla_put_failure;
-
- if (group_item->policer_item &&
- nla_put_u32(msg, DEVLINK_ATTR_TRAP_POLICER_ID,
- group_item->policer_item->policer->id))
- goto nla_put_failure;
-
- err = devlink_trap_group_stats_put(msg, group_item->stats);
- if (err)
- goto nla_put_failure;
-
- genlmsg_end(msg, hdr);
-
- return 0;
-
-nla_put_failure:
- genlmsg_cancel(msg, hdr);
- return -EMSGSIZE;
-}
-
-static int devlink_nl_cmd_trap_group_get_doit(struct sk_buff *skb,
- struct genl_info *info)
-{
- struct netlink_ext_ack *extack = info->extack;
- struct devlink *devlink = info->user_ptr[0];
- struct devlink_trap_group_item *group_item;
- struct sk_buff *msg;
- int err;
-
- if (list_empty(&devlink->trap_group_list))
- return -EOPNOTSUPP;
-
- group_item = devlink_trap_group_item_get_from_info(devlink, info);
- if (!group_item) {
- NL_SET_ERR_MSG_MOD(extack, "Device did not register this trap group");
- return -ENOENT;
- }
-
- msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
- if (!msg)
- return -ENOMEM;
-
- err = devlink_nl_trap_group_fill(msg, devlink, group_item,
- DEVLINK_CMD_TRAP_GROUP_NEW,
- info->snd_portid, info->snd_seq, 0);
- if (err)
- goto err_trap_group_fill;
-
- return genlmsg_reply(msg, info);
-
-err_trap_group_fill:
- nlmsg_free(msg);
- return err;
-}
-
-static int devlink_nl_cmd_trap_group_get_dumpit(struct sk_buff *msg,
- struct netlink_callback *cb)
-{
- enum devlink_command cmd = DEVLINK_CMD_TRAP_GROUP_NEW;
- struct devlink_trap_group_item *group_item;
- u32 portid = NETLINK_CB(cb->skb).portid;
- struct devlink *devlink;
- int start = cb->args[0];
- unsigned long index;
- int idx = 0;
- int err;
-
- devlinks_xa_for_each_registered_get(sock_net(msg->sk), index, devlink) {
- devl_lock(devlink);
- list_for_each_entry(group_item, &devlink->trap_group_list,
- list) {
- if (idx < start) {
- idx++;
- continue;
- }
- err = devlink_nl_trap_group_fill(msg, devlink,
- group_item, cmd,
- portid,
- cb->nlh->nlmsg_seq,
- NLM_F_MULTI);
- if (err) {
- devl_unlock(devlink);
- devlink_put(devlink);
- goto out;
- }
- idx++;
- }
- devl_unlock(devlink);
- devlink_put(devlink);
- }
-out:
- cb->args[0] = idx;
- return msg->len;
-}
-
-static int
-__devlink_trap_group_action_set(struct devlink *devlink,
- struct devlink_trap_group_item *group_item,
- enum devlink_trap_action trap_action,
- struct netlink_ext_ack *extack)
-{
- const char *group_name = group_item->group->name;
- struct devlink_trap_item *trap_item;
- int err;
-
- if (devlink->ops->trap_group_action_set) {
- err = devlink->ops->trap_group_action_set(devlink, group_item->group,
- trap_action, extack);
- if (err)
- return err;
-
- list_for_each_entry(trap_item, &devlink->trap_list, list) {
- if (strcmp(trap_item->group_item->group->name, group_name))
- continue;
- if (trap_item->action != trap_action &&
- trap_item->trap->type != DEVLINK_TRAP_TYPE_DROP)
- continue;
- trap_item->action = trap_action;
- }
-
- return 0;
- }
-
- list_for_each_entry(trap_item, &devlink->trap_list, list) {
- if (strcmp(trap_item->group_item->group->name, group_name))
- continue;
- err = __devlink_trap_action_set(devlink, trap_item,
- trap_action, extack);
- if (err)
- return err;
- }
-
- return 0;
-}
-
-static int
-devlink_trap_group_action_set(struct devlink *devlink,
- struct devlink_trap_group_item *group_item,
- struct genl_info *info, bool *p_modified)
-{
- enum devlink_trap_action trap_action;
- int err;
-
- if (!info->attrs[DEVLINK_ATTR_TRAP_ACTION])
- return 0;
-
- err = devlink_trap_action_get_from_info(info, &trap_action);
- if (err) {
- NL_SET_ERR_MSG_MOD(info->extack, "Invalid trap action");
- return -EINVAL;
- }
-
- err = __devlink_trap_group_action_set(devlink, group_item, trap_action,
- info->extack);
- if (err)
- return err;
-
- *p_modified = true;
-
- return 0;
-}
-
-static int devlink_trap_group_set(struct devlink *devlink,
- struct devlink_trap_group_item *group_item,
- struct genl_info *info)
-{
- struct devlink_trap_policer_item *policer_item;
- struct netlink_ext_ack *extack = info->extack;
- const struct devlink_trap_policer *policer;
- struct nlattr **attrs = info->attrs;
- int err;
-
- if (!attrs[DEVLINK_ATTR_TRAP_POLICER_ID])
- return 0;
-
- if (!devlink->ops->trap_group_set)
- return -EOPNOTSUPP;
-
- policer_item = group_item->policer_item;
- if (attrs[DEVLINK_ATTR_TRAP_POLICER_ID]) {
- u32 policer_id;
-
- policer_id = nla_get_u32(attrs[DEVLINK_ATTR_TRAP_POLICER_ID]);
- policer_item = devlink_trap_policer_item_lookup(devlink,
- policer_id);
- if (policer_id && !policer_item) {
- NL_SET_ERR_MSG_MOD(extack, "Device did not register this trap policer");
- return -ENOENT;
- }
- }
- policer = policer_item ? policer_item->policer : NULL;
-
- err = devlink->ops->trap_group_set(devlink, group_item->group, policer,
- extack);
- if (err)
- return err;
-
- group_item->policer_item = policer_item;
-
- return 0;
-}
-
-static int devlink_nl_cmd_trap_group_set_doit(struct sk_buff *skb,
- struct genl_info *info)
-{
- struct netlink_ext_ack *extack = info->extack;
- struct devlink *devlink = info->user_ptr[0];
- struct devlink_trap_group_item *group_item;
- bool modified = false;
- int err;
-
- if (list_empty(&devlink->trap_group_list))
- return -EOPNOTSUPP;
-
- group_item = devlink_trap_group_item_get_from_info(devlink, info);
- if (!group_item) {
- NL_SET_ERR_MSG_MOD(extack, "Device did not register this trap group");
- return -ENOENT;
- }
-
- err = devlink_trap_group_action_set(devlink, group_item, info,
- &modified);
- if (err)
- return err;
-
- err = devlink_trap_group_set(devlink, group_item, info);
- if (err)
- goto err_trap_group_set;
-
- return 0;
-
-err_trap_group_set:
- if (modified)
- NL_SET_ERR_MSG_MOD(extack, "Trap group set failed, but some changes were committed already");
- return err;
-}
-
-static struct devlink_trap_policer_item *
-devlink_trap_policer_item_get_from_info(struct devlink *devlink,
- struct genl_info *info)
-{
- u32 id;
-
- if (!info->attrs[DEVLINK_ATTR_TRAP_POLICER_ID])
- return NULL;
- id = nla_get_u32(info->attrs[DEVLINK_ATTR_TRAP_POLICER_ID]);
-
- return devlink_trap_policer_item_lookup(devlink, id);
-}
-
-static int
-devlink_trap_policer_stats_put(struct sk_buff *msg, struct devlink *devlink,
- const struct devlink_trap_policer *policer)
-{
- struct nlattr *attr;
- u64 drops;
- int err;
-
- if (!devlink->ops->trap_policer_counter_get)
- return 0;
-
- err = devlink->ops->trap_policer_counter_get(devlink, policer, &drops);
- if (err)
- return err;
-
- attr = nla_nest_start(msg, DEVLINK_ATTR_STATS);
- if (!attr)
- return -EMSGSIZE;
-
- if (nla_put_u64_64bit(msg, DEVLINK_ATTR_STATS_RX_DROPPED, drops,
- DEVLINK_ATTR_PAD))
- goto nla_put_failure;
-
- nla_nest_end(msg, attr);
-
- return 0;
-
-nla_put_failure:
- nla_nest_cancel(msg, attr);
- return -EMSGSIZE;
-}
-
-static int
-devlink_nl_trap_policer_fill(struct sk_buff *msg, struct devlink *devlink,
- const struct devlink_trap_policer_item *policer_item,
- enum devlink_command cmd, u32 portid, u32 seq,
- int flags)
-{
- void *hdr;
- int err;
-
- hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
- if (!hdr)
- return -EMSGSIZE;
-
- if (devlink_nl_put_handle(msg, devlink))
- goto nla_put_failure;
-
- if (nla_put_u32(msg, DEVLINK_ATTR_TRAP_POLICER_ID,
- policer_item->policer->id))
- goto nla_put_failure;
-
- if (nla_put_u64_64bit(msg, DEVLINK_ATTR_TRAP_POLICER_RATE,
- policer_item->rate, DEVLINK_ATTR_PAD))
- goto nla_put_failure;
-
- if (nla_put_u64_64bit(msg, DEVLINK_ATTR_TRAP_POLICER_BURST,
- policer_item->burst, DEVLINK_ATTR_PAD))
- goto nla_put_failure;
-
- err = devlink_trap_policer_stats_put(msg, devlink,
- policer_item->policer);
- if (err)
- goto nla_put_failure;
-
- genlmsg_end(msg, hdr);
-
- return 0;
-
-nla_put_failure:
- genlmsg_cancel(msg, hdr);
- return -EMSGSIZE;
-}
-
-static int devlink_nl_cmd_trap_policer_get_doit(struct sk_buff *skb,
- struct genl_info *info)
-{
- struct devlink_trap_policer_item *policer_item;
- struct netlink_ext_ack *extack = info->extack;
- struct devlink *devlink = info->user_ptr[0];
- struct sk_buff *msg;
- int err;
-
- if (list_empty(&devlink->trap_policer_list))
- return -EOPNOTSUPP;
-
- policer_item = devlink_trap_policer_item_get_from_info(devlink, info);
- if (!policer_item) {
- NL_SET_ERR_MSG_MOD(extack, "Device did not register this trap policer");
- return -ENOENT;
- }
-
- msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
- if (!msg)
- return -ENOMEM;
-
- err = devlink_nl_trap_policer_fill(msg, devlink, policer_item,
- DEVLINK_CMD_TRAP_POLICER_NEW,
- info->snd_portid, info->snd_seq, 0);
- if (err)
- goto err_trap_policer_fill;
-
- return genlmsg_reply(msg, info);
-
-err_trap_policer_fill:
- nlmsg_free(msg);
- return err;
-}
-
-static int devlink_nl_cmd_trap_policer_get_dumpit(struct sk_buff *msg,
- struct netlink_callback *cb)
-{
- enum devlink_command cmd = DEVLINK_CMD_TRAP_POLICER_NEW;
- struct devlink_trap_policer_item *policer_item;
- u32 portid = NETLINK_CB(cb->skb).portid;
- struct devlink *devlink;
- int start = cb->args[0];
- unsigned long index;
- int idx = 0;
- int err;
-
- devlinks_xa_for_each_registered_get(sock_net(msg->sk), index, devlink) {
- devl_lock(devlink);
- list_for_each_entry(policer_item, &devlink->trap_policer_list,
- list) {
- if (idx < start) {
- idx++;
- continue;
- }
- err = devlink_nl_trap_policer_fill(msg, devlink,
- policer_item, cmd,
- portid,
- cb->nlh->nlmsg_seq,
- NLM_F_MULTI);
- if (err) {
- devl_unlock(devlink);
- devlink_put(devlink);
- goto out;
- }
- idx++;
- }
- devl_unlock(devlink);
- devlink_put(devlink);
- }
-out:
- cb->args[0] = idx;
- return msg->len;
-}
-
-static int
-devlink_trap_policer_set(struct devlink *devlink,
- struct devlink_trap_policer_item *policer_item,
- struct genl_info *info)
-{
- struct netlink_ext_ack *extack = info->extack;
- struct nlattr **attrs = info->attrs;
- u64 rate, burst;
- int err;
-
- rate = policer_item->rate;
- burst = policer_item->burst;
-
- if (attrs[DEVLINK_ATTR_TRAP_POLICER_RATE])
- rate = nla_get_u64(attrs[DEVLINK_ATTR_TRAP_POLICER_RATE]);
-
- if (attrs[DEVLINK_ATTR_TRAP_POLICER_BURST])
- burst = nla_get_u64(attrs[DEVLINK_ATTR_TRAP_POLICER_BURST]);
-
- if (rate < policer_item->policer->min_rate) {
- NL_SET_ERR_MSG_MOD(extack, "Policer rate lower than limit");
- return -EINVAL;
- }
-
- if (rate > policer_item->policer->max_rate) {
- NL_SET_ERR_MSG_MOD(extack, "Policer rate higher than limit");
- return -EINVAL;
- }
-
- if (burst < policer_item->policer->min_burst) {
- NL_SET_ERR_MSG_MOD(extack, "Policer burst size lower than limit");
- return -EINVAL;
- }
-
- if (burst > policer_item->policer->max_burst) {
- NL_SET_ERR_MSG_MOD(extack, "Policer burst size higher than limit");
- return -EINVAL;
- }
-
- err = devlink->ops->trap_policer_set(devlink, policer_item->policer,
- rate, burst, info->extack);
- if (err)
- return err;
-
- policer_item->rate = rate;
- policer_item->burst = burst;
-
- return 0;
-}
-
-static int devlink_nl_cmd_trap_policer_set_doit(struct sk_buff *skb,
- struct genl_info *info)
-{
- struct devlink_trap_policer_item *policer_item;
- struct netlink_ext_ack *extack = info->extack;
- struct devlink *devlink = info->user_ptr[0];
-
- if (list_empty(&devlink->trap_policer_list))
- return -EOPNOTSUPP;
-
- if (!devlink->ops->trap_policer_set)
- return -EOPNOTSUPP;
-
- policer_item = devlink_trap_policer_item_get_from_info(devlink, info);
- if (!policer_item) {
- NL_SET_ERR_MSG_MOD(extack, "Device did not register this trap policer");
- return -ENOENT;
- }
-
- return devlink_trap_policer_set(devlink, policer_item, info);
-}
-
-static const struct nla_policy devlink_nl_policy[DEVLINK_ATTR_MAX + 1] = {
- [DEVLINK_ATTR_UNSPEC] = { .strict_start_type =
- DEVLINK_ATTR_TRAP_POLICER_ID },
- [DEVLINK_ATTR_BUS_NAME] = { .type = NLA_NUL_STRING },
- [DEVLINK_ATTR_DEV_NAME] = { .type = NLA_NUL_STRING },
- [DEVLINK_ATTR_PORT_INDEX] = { .type = NLA_U32 },
- [DEVLINK_ATTR_PORT_TYPE] = NLA_POLICY_RANGE(NLA_U16, DEVLINK_PORT_TYPE_AUTO,
- DEVLINK_PORT_TYPE_IB),
- [DEVLINK_ATTR_PORT_SPLIT_COUNT] = { .type = NLA_U32 },
- [DEVLINK_ATTR_SB_INDEX] = { .type = NLA_U32 },
- [DEVLINK_ATTR_SB_POOL_INDEX] = { .type = NLA_U16 },
- [DEVLINK_ATTR_SB_POOL_TYPE] = { .type = NLA_U8 },
- [DEVLINK_ATTR_SB_POOL_SIZE] = { .type = NLA_U32 },
- [DEVLINK_ATTR_SB_POOL_THRESHOLD_TYPE] = { .type = NLA_U8 },
- [DEVLINK_ATTR_SB_THRESHOLD] = { .type = NLA_U32 },
- [DEVLINK_ATTR_SB_TC_INDEX] = { .type = NLA_U16 },
- [DEVLINK_ATTR_ESWITCH_MODE] = NLA_POLICY_RANGE(NLA_U16, DEVLINK_ESWITCH_MODE_LEGACY,
- DEVLINK_ESWITCH_MODE_SWITCHDEV),
- [DEVLINK_ATTR_ESWITCH_INLINE_MODE] = { .type = NLA_U8 },
- [DEVLINK_ATTR_ESWITCH_ENCAP_MODE] = { .type = NLA_U8 },
- [DEVLINK_ATTR_DPIPE_TABLE_NAME] = { .type = NLA_NUL_STRING },
- [DEVLINK_ATTR_DPIPE_TABLE_COUNTERS_ENABLED] = { .type = NLA_U8 },
- [DEVLINK_ATTR_RESOURCE_ID] = { .type = NLA_U64},
- [DEVLINK_ATTR_RESOURCE_SIZE] = { .type = NLA_U64},
- [DEVLINK_ATTR_PARAM_NAME] = { .type = NLA_NUL_STRING },
- [DEVLINK_ATTR_PARAM_TYPE] = { .type = NLA_U8 },
- [DEVLINK_ATTR_PARAM_VALUE_CMODE] = { .type = NLA_U8 },
- [DEVLINK_ATTR_REGION_NAME] = { .type = NLA_NUL_STRING },
- [DEVLINK_ATTR_REGION_SNAPSHOT_ID] = { .type = NLA_U32 },
- [DEVLINK_ATTR_REGION_CHUNK_ADDR] = { .type = NLA_U64 },
- [DEVLINK_ATTR_REGION_CHUNK_LEN] = { .type = NLA_U64 },
- [DEVLINK_ATTR_HEALTH_REPORTER_NAME] = { .type = NLA_NUL_STRING },
- [DEVLINK_ATTR_HEALTH_REPORTER_GRACEFUL_PERIOD] = { .type = NLA_U64 },
- [DEVLINK_ATTR_HEALTH_REPORTER_AUTO_RECOVER] = { .type = NLA_U8 },
- [DEVLINK_ATTR_FLASH_UPDATE_FILE_NAME] = { .type = NLA_NUL_STRING },
- [DEVLINK_ATTR_FLASH_UPDATE_COMPONENT] = { .type = NLA_NUL_STRING },
- [DEVLINK_ATTR_FLASH_UPDATE_OVERWRITE_MASK] =
- NLA_POLICY_BITFIELD32(DEVLINK_SUPPORTED_FLASH_OVERWRITE_SECTIONS),
- [DEVLINK_ATTR_TRAP_NAME] = { .type = NLA_NUL_STRING },
- [DEVLINK_ATTR_TRAP_ACTION] = { .type = NLA_U8 },
- [DEVLINK_ATTR_TRAP_GROUP_NAME] = { .type = NLA_NUL_STRING },
- [DEVLINK_ATTR_NETNS_PID] = { .type = NLA_U32 },
- [DEVLINK_ATTR_NETNS_FD] = { .type = NLA_U32 },
- [DEVLINK_ATTR_NETNS_ID] = { .type = NLA_U32 },
- [DEVLINK_ATTR_HEALTH_REPORTER_AUTO_DUMP] = { .type = NLA_U8 },
- [DEVLINK_ATTR_TRAP_POLICER_ID] = { .type = NLA_U32 },
- [DEVLINK_ATTR_TRAP_POLICER_RATE] = { .type = NLA_U64 },
- [DEVLINK_ATTR_TRAP_POLICER_BURST] = { .type = NLA_U64 },
- [DEVLINK_ATTR_PORT_FUNCTION] = { .type = NLA_NESTED },
- [DEVLINK_ATTR_RELOAD_ACTION] = NLA_POLICY_RANGE(NLA_U8, DEVLINK_RELOAD_ACTION_DRIVER_REINIT,
- DEVLINK_RELOAD_ACTION_MAX),
- [DEVLINK_ATTR_RELOAD_LIMITS] = NLA_POLICY_BITFIELD32(DEVLINK_RELOAD_LIMITS_VALID_MASK),
- [DEVLINK_ATTR_PORT_FLAVOUR] = { .type = NLA_U16 },
- [DEVLINK_ATTR_PORT_PCI_PF_NUMBER] = { .type = NLA_U16 },
- [DEVLINK_ATTR_PORT_PCI_SF_NUMBER] = { .type = NLA_U32 },
- [DEVLINK_ATTR_PORT_CONTROLLER_NUMBER] = { .type = NLA_U32 },
- [DEVLINK_ATTR_RATE_TYPE] = { .type = NLA_U16 },
- [DEVLINK_ATTR_RATE_TX_SHARE] = { .type = NLA_U64 },
- [DEVLINK_ATTR_RATE_TX_MAX] = { .type = NLA_U64 },
- [DEVLINK_ATTR_RATE_NODE_NAME] = { .type = NLA_NUL_STRING },
- [DEVLINK_ATTR_RATE_PARENT_NODE_NAME] = { .type = NLA_NUL_STRING },
- [DEVLINK_ATTR_LINECARD_INDEX] = { .type = NLA_U32 },
- [DEVLINK_ATTR_LINECARD_TYPE] = { .type = NLA_NUL_STRING },
- [DEVLINK_ATTR_SELFTESTS] = { .type = NLA_NESTED },
-};
-
-static const struct genl_small_ops devlink_nl_ops[] = {
- {
- .cmd = DEVLINK_CMD_GET,
- .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
- .doit = devlink_nl_cmd_get_doit,
- .dumpit = devlink_nl_cmd_get_dumpit,
- /* can be retrieved by unprivileged users */
- },
- {
- .cmd = DEVLINK_CMD_PORT_GET,
- .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
- .doit = devlink_nl_cmd_port_get_doit,
- .dumpit = devlink_nl_cmd_port_get_dumpit,
- .internal_flags = DEVLINK_NL_FLAG_NEED_PORT,
- /* can be retrieved by unprivileged users */
- },
- {
- .cmd = DEVLINK_CMD_PORT_SET,
- .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
- .doit = devlink_nl_cmd_port_set_doit,
- .flags = GENL_ADMIN_PERM,
- .internal_flags = DEVLINK_NL_FLAG_NEED_PORT,
- },
- {
- .cmd = DEVLINK_CMD_RATE_GET,
- .doit = devlink_nl_cmd_rate_get_doit,
- .dumpit = devlink_nl_cmd_rate_get_dumpit,
- .internal_flags = DEVLINK_NL_FLAG_NEED_RATE,
- /* can be retrieved by unprivileged users */
- },
- {
- .cmd = DEVLINK_CMD_RATE_SET,
- .doit = devlink_nl_cmd_rate_set_doit,
- .flags = GENL_ADMIN_PERM,
- .internal_flags = DEVLINK_NL_FLAG_NEED_RATE,
- },
- {
- .cmd = DEVLINK_CMD_RATE_NEW,
- .doit = devlink_nl_cmd_rate_new_doit,
- .flags = GENL_ADMIN_PERM,
- },
- {
- .cmd = DEVLINK_CMD_RATE_DEL,
- .doit = devlink_nl_cmd_rate_del_doit,
- .flags = GENL_ADMIN_PERM,
- .internal_flags = DEVLINK_NL_FLAG_NEED_RATE_NODE,
- },
- {
- .cmd = DEVLINK_CMD_PORT_SPLIT,
- .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
- .doit = devlink_nl_cmd_port_split_doit,
- .flags = GENL_ADMIN_PERM,
- .internal_flags = DEVLINK_NL_FLAG_NEED_PORT,
- },
- {
- .cmd = DEVLINK_CMD_PORT_UNSPLIT,
- .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
- .doit = devlink_nl_cmd_port_unsplit_doit,
- .flags = GENL_ADMIN_PERM,
- .internal_flags = DEVLINK_NL_FLAG_NEED_PORT,
- },
- {
- .cmd = DEVLINK_CMD_PORT_NEW,
- .doit = devlink_nl_cmd_port_new_doit,
- .flags = GENL_ADMIN_PERM,
- },
- {
- .cmd = DEVLINK_CMD_PORT_DEL,
- .doit = devlink_nl_cmd_port_del_doit,
- .flags = GENL_ADMIN_PERM,
- },
- {
- .cmd = DEVLINK_CMD_LINECARD_GET,
- .doit = devlink_nl_cmd_linecard_get_doit,
- .dumpit = devlink_nl_cmd_linecard_get_dumpit,
- .internal_flags = DEVLINK_NL_FLAG_NEED_LINECARD,
- /* can be retrieved by unprivileged users */
- },
- {
- .cmd = DEVLINK_CMD_LINECARD_SET,
- .doit = devlink_nl_cmd_linecard_set_doit,
- .flags = GENL_ADMIN_PERM,
- .internal_flags = DEVLINK_NL_FLAG_NEED_LINECARD,
- },
- {
- .cmd = DEVLINK_CMD_SB_GET,
- .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
- .doit = devlink_nl_cmd_sb_get_doit,
- .dumpit = devlink_nl_cmd_sb_get_dumpit,
- /* can be retrieved by unprivileged users */
- },
- {
- .cmd = DEVLINK_CMD_SB_POOL_GET,
- .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
- .doit = devlink_nl_cmd_sb_pool_get_doit,
- .dumpit = devlink_nl_cmd_sb_pool_get_dumpit,
- /* can be retrieved by unprivileged users */
- },
- {
- .cmd = DEVLINK_CMD_SB_POOL_SET,
- .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
- .doit = devlink_nl_cmd_sb_pool_set_doit,
- .flags = GENL_ADMIN_PERM,
- },
- {
- .cmd = DEVLINK_CMD_SB_PORT_POOL_GET,
- .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
- .doit = devlink_nl_cmd_sb_port_pool_get_doit,
- .dumpit = devlink_nl_cmd_sb_port_pool_get_dumpit,
- .internal_flags = DEVLINK_NL_FLAG_NEED_PORT,
- /* can be retrieved by unprivileged users */
- },
- {
- .cmd = DEVLINK_CMD_SB_PORT_POOL_SET,
- .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
- .doit = devlink_nl_cmd_sb_port_pool_set_doit,
- .flags = GENL_ADMIN_PERM,
- .internal_flags = DEVLINK_NL_FLAG_NEED_PORT,
- },
- {
- .cmd = DEVLINK_CMD_SB_TC_POOL_BIND_GET,
- .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
- .doit = devlink_nl_cmd_sb_tc_pool_bind_get_doit,
- .dumpit = devlink_nl_cmd_sb_tc_pool_bind_get_dumpit,
- .internal_flags = DEVLINK_NL_FLAG_NEED_PORT,
- /* can be retrieved by unprivileged users */
- },
- {
- .cmd = DEVLINK_CMD_SB_TC_POOL_BIND_SET,
- .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
- .doit = devlink_nl_cmd_sb_tc_pool_bind_set_doit,
- .flags = GENL_ADMIN_PERM,
- .internal_flags = DEVLINK_NL_FLAG_NEED_PORT,
- },
- {
- .cmd = DEVLINK_CMD_SB_OCC_SNAPSHOT,
- .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
- .doit = devlink_nl_cmd_sb_occ_snapshot_doit,
- .flags = GENL_ADMIN_PERM,
- },
- {
- .cmd = DEVLINK_CMD_SB_OCC_MAX_CLEAR,
- .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
- .doit = devlink_nl_cmd_sb_occ_max_clear_doit,
- .flags = GENL_ADMIN_PERM,
- },
- {
- .cmd = DEVLINK_CMD_ESWITCH_GET,
- .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
- .doit = devlink_nl_cmd_eswitch_get_doit,
- .flags = GENL_ADMIN_PERM,
- },
- {
- .cmd = DEVLINK_CMD_ESWITCH_SET,
- .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
- .doit = devlink_nl_cmd_eswitch_set_doit,
- .flags = GENL_ADMIN_PERM,
- },
- {
- .cmd = DEVLINK_CMD_DPIPE_TABLE_GET,
- .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
- .doit = devlink_nl_cmd_dpipe_table_get,
- /* can be retrieved by unprivileged users */
- },
- {
- .cmd = DEVLINK_CMD_DPIPE_ENTRIES_GET,
- .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
- .doit = devlink_nl_cmd_dpipe_entries_get,
- /* can be retrieved by unprivileged users */
- },
- {
- .cmd = DEVLINK_CMD_DPIPE_HEADERS_GET,
- .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
- .doit = devlink_nl_cmd_dpipe_headers_get,
- /* can be retrieved by unprivileged users */
- },
- {
- .cmd = DEVLINK_CMD_DPIPE_TABLE_COUNTERS_SET,
- .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
- .doit = devlink_nl_cmd_dpipe_table_counters_set,
- .flags = GENL_ADMIN_PERM,
- },
- {
- .cmd = DEVLINK_CMD_RESOURCE_SET,
- .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
- .doit = devlink_nl_cmd_resource_set,
- .flags = GENL_ADMIN_PERM,
- },
- {
- .cmd = DEVLINK_CMD_RESOURCE_DUMP,
- .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
- .doit = devlink_nl_cmd_resource_dump,
- /* can be retrieved by unprivileged users */
- },
- {
- .cmd = DEVLINK_CMD_RELOAD,
- .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
- .doit = devlink_nl_cmd_reload,
- .flags = GENL_ADMIN_PERM,
- },
- {
- .cmd = DEVLINK_CMD_PARAM_GET,
- .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
- .doit = devlink_nl_cmd_param_get_doit,
- .dumpit = devlink_nl_cmd_param_get_dumpit,
- /* can be retrieved by unprivileged users */
- },
- {
- .cmd = DEVLINK_CMD_PARAM_SET,
- .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
- .doit = devlink_nl_cmd_param_set_doit,
- .flags = GENL_ADMIN_PERM,
- },
- {
- .cmd = DEVLINK_CMD_PORT_PARAM_GET,
- .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
- .doit = devlink_nl_cmd_port_param_get_doit,
- .dumpit = devlink_nl_cmd_port_param_get_dumpit,
- .internal_flags = DEVLINK_NL_FLAG_NEED_PORT,
- /* can be retrieved by unprivileged users */
- },
- {
- .cmd = DEVLINK_CMD_PORT_PARAM_SET,
- .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
- .doit = devlink_nl_cmd_port_param_set_doit,
- .flags = GENL_ADMIN_PERM,
- .internal_flags = DEVLINK_NL_FLAG_NEED_PORT,
- },
- {
- .cmd = DEVLINK_CMD_REGION_GET,
- .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
- .doit = devlink_nl_cmd_region_get_doit,
- .dumpit = devlink_nl_cmd_region_get_dumpit,
- .flags = GENL_ADMIN_PERM,
- },
- {
- .cmd = DEVLINK_CMD_REGION_NEW,
- .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
- .doit = devlink_nl_cmd_region_new,
- .flags = GENL_ADMIN_PERM,
- },
- {
- .cmd = DEVLINK_CMD_REGION_DEL,
- .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
- .doit = devlink_nl_cmd_region_del,
- .flags = GENL_ADMIN_PERM,
- },
- {
- .cmd = DEVLINK_CMD_REGION_READ,
- .validate = GENL_DONT_VALIDATE_STRICT |
- GENL_DONT_VALIDATE_DUMP_STRICT,
- .dumpit = devlink_nl_cmd_region_read_dumpit,
- .flags = GENL_ADMIN_PERM,
- },
- {
- .cmd = DEVLINK_CMD_INFO_GET,
- .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
- .doit = devlink_nl_cmd_info_get_doit,
- .dumpit = devlink_nl_cmd_info_get_dumpit,
- /* can be retrieved by unprivileged users */
- },
- {
- .cmd = DEVLINK_CMD_HEALTH_REPORTER_GET,
- .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
- .doit = devlink_nl_cmd_health_reporter_get_doit,
- .dumpit = devlink_nl_cmd_health_reporter_get_dumpit,
- .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK_OR_PORT,
- /* can be retrieved by unprivileged users */
- },
- {
- .cmd = DEVLINK_CMD_HEALTH_REPORTER_SET,
- .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
- .doit = devlink_nl_cmd_health_reporter_set_doit,
- .flags = GENL_ADMIN_PERM,
- .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK_OR_PORT,
- },
- {
- .cmd = DEVLINK_CMD_HEALTH_REPORTER_RECOVER,
- .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
- .doit = devlink_nl_cmd_health_reporter_recover_doit,
- .flags = GENL_ADMIN_PERM,
- .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK_OR_PORT,
- },
- {
- .cmd = DEVLINK_CMD_HEALTH_REPORTER_DIAGNOSE,
- .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
- .doit = devlink_nl_cmd_health_reporter_diagnose_doit,
- .flags = GENL_ADMIN_PERM,
- .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK_OR_PORT,
- },
- {
- .cmd = DEVLINK_CMD_HEALTH_REPORTER_DUMP_GET,
- .validate = GENL_DONT_VALIDATE_STRICT |
- GENL_DONT_VALIDATE_DUMP_STRICT,
- .dumpit = devlink_nl_cmd_health_reporter_dump_get_dumpit,
- .flags = GENL_ADMIN_PERM,
- },
- {
- .cmd = DEVLINK_CMD_HEALTH_REPORTER_DUMP_CLEAR,
- .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
- .doit = devlink_nl_cmd_health_reporter_dump_clear_doit,
- .flags = GENL_ADMIN_PERM,
- .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK_OR_PORT,
- },
- {
- .cmd = DEVLINK_CMD_HEALTH_REPORTER_TEST,
- .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
- .doit = devlink_nl_cmd_health_reporter_test_doit,
- .flags = GENL_ADMIN_PERM,
- .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK_OR_PORT,
- },
- {
- .cmd = DEVLINK_CMD_FLASH_UPDATE,
- .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
- .doit = devlink_nl_cmd_flash_update,
- .flags = GENL_ADMIN_PERM,
- },
- {
- .cmd = DEVLINK_CMD_TRAP_GET,
- .doit = devlink_nl_cmd_trap_get_doit,
- .dumpit = devlink_nl_cmd_trap_get_dumpit,
- /* can be retrieved by unprivileged users */
- },
- {
- .cmd = DEVLINK_CMD_TRAP_SET,
- .doit = devlink_nl_cmd_trap_set_doit,
- .flags = GENL_ADMIN_PERM,
- },
- {
- .cmd = DEVLINK_CMD_TRAP_GROUP_GET,
- .doit = devlink_nl_cmd_trap_group_get_doit,
- .dumpit = devlink_nl_cmd_trap_group_get_dumpit,
- /* can be retrieved by unprivileged users */
- },
- {
- .cmd = DEVLINK_CMD_TRAP_GROUP_SET,
- .doit = devlink_nl_cmd_trap_group_set_doit,
- .flags = GENL_ADMIN_PERM,
- },
- {
- .cmd = DEVLINK_CMD_TRAP_POLICER_GET,
- .doit = devlink_nl_cmd_trap_policer_get_doit,
- .dumpit = devlink_nl_cmd_trap_policer_get_dumpit,
- /* can be retrieved by unprivileged users */
- },
- {
- .cmd = DEVLINK_CMD_TRAP_POLICER_SET,
- .doit = devlink_nl_cmd_trap_policer_set_doit,
- .flags = GENL_ADMIN_PERM,
- },
- {
- .cmd = DEVLINK_CMD_SELFTESTS_GET,
- .doit = devlink_nl_cmd_selftests_get_doit,
- .dumpit = devlink_nl_cmd_selftests_get_dumpit
- /* can be retrieved by unprivileged users */
- },
- {
- .cmd = DEVLINK_CMD_SELFTESTS_RUN,
- .doit = devlink_nl_cmd_selftests_run,
- .flags = GENL_ADMIN_PERM,
- },
-};
-
-static struct genl_family devlink_nl_family __ro_after_init = {
- .name = DEVLINK_GENL_NAME,
- .version = DEVLINK_GENL_VERSION,
- .maxattr = DEVLINK_ATTR_MAX,
- .policy = devlink_nl_policy,
- .netnsok = true,
- .parallel_ops = true,
- .pre_doit = devlink_nl_pre_doit,
- .post_doit = devlink_nl_post_doit,
- .module = THIS_MODULE,
- .small_ops = devlink_nl_ops,
- .n_small_ops = ARRAY_SIZE(devlink_nl_ops),
- .resv_start_op = DEVLINK_CMD_SELFTESTS_RUN + 1,
- .mcgrps = devlink_nl_mcgrps,
- .n_mcgrps = ARRAY_SIZE(devlink_nl_mcgrps),
-};
-
-static bool devlink_reload_actions_valid(const struct devlink_ops *ops)
-{
- const struct devlink_reload_combination *comb;
- int i;
-
- if (!devlink_reload_supported(ops)) {
- if (WARN_ON(ops->reload_actions))
- return false;
- return true;
- }
-
- if (WARN_ON(!ops->reload_actions ||
- ops->reload_actions & BIT(DEVLINK_RELOAD_ACTION_UNSPEC) ||
- ops->reload_actions >= BIT(__DEVLINK_RELOAD_ACTION_MAX)))
- return false;
-
- if (WARN_ON(ops->reload_limits & BIT(DEVLINK_RELOAD_LIMIT_UNSPEC) ||
- ops->reload_limits >= BIT(__DEVLINK_RELOAD_LIMIT_MAX)))
- return false;
-
- for (i = 0; i < ARRAY_SIZE(devlink_reload_invalid_combinations); i++) {
- comb = &devlink_reload_invalid_combinations[i];
- if (ops->reload_actions == BIT(comb->action) &&
- ops->reload_limits == BIT(comb->limit))
- return false;
- }
- return true;
-}
-
-/**
- * devlink_set_features - Set devlink supported features
- *
- * @devlink: devlink
- * @features: devlink support features
- *
- * This interface allows us to set reload ops separatelly from
- * the devlink_alloc.
- */
-void devlink_set_features(struct devlink *devlink, u64 features)
-{
- ASSERT_DEVLINK_NOT_REGISTERED(devlink);
-
- WARN_ON(features & DEVLINK_F_RELOAD &&
- !devlink_reload_supported(devlink->ops));
- devlink->features = features;
-}
-EXPORT_SYMBOL_GPL(devlink_set_features);
-
-/**
- * devlink_alloc_ns - Allocate new devlink instance resources
- * in specific namespace
- *
- * @ops: ops
- * @priv_size: size of user private data
- * @net: net namespace
- * @dev: parent device
- *
- * Allocate new devlink instance resources, including devlink index
- * and name.
- */
-struct devlink *devlink_alloc_ns(const struct devlink_ops *ops,
- size_t priv_size, struct net *net,
- struct device *dev)
-{
- struct devlink *devlink;
- static u32 last_id;
- int ret;
-
- WARN_ON(!ops || !dev);
- if (!devlink_reload_actions_valid(ops))
- return NULL;
-
- devlink = kzalloc(sizeof(*devlink) + priv_size, GFP_KERNEL);
- if (!devlink)
- return NULL;
-
- ret = xa_alloc_cyclic(&devlinks, &devlink->index, devlink, xa_limit_31b,
- &last_id, GFP_KERNEL);
- if (ret < 0) {
- kfree(devlink);
- return NULL;
- }
-
- devlink->dev = dev;
- devlink->ops = ops;
- xa_init_flags(&devlink->snapshot_ids, XA_FLAGS_ALLOC);
- write_pnet(&devlink->_net, net);
- INIT_LIST_HEAD(&devlink->port_list);
- INIT_LIST_HEAD(&devlink->rate_list);
- INIT_LIST_HEAD(&devlink->linecard_list);
- INIT_LIST_HEAD(&devlink->sb_list);
- INIT_LIST_HEAD_RCU(&devlink->dpipe_table_list);
- INIT_LIST_HEAD(&devlink->resource_list);
- INIT_LIST_HEAD(&devlink->param_list);
- INIT_LIST_HEAD(&devlink->region_list);
- INIT_LIST_HEAD(&devlink->reporter_list);
- INIT_LIST_HEAD(&devlink->trap_list);
- INIT_LIST_HEAD(&devlink->trap_group_list);
- INIT_LIST_HEAD(&devlink->trap_policer_list);
- lockdep_register_key(&devlink->lock_key);
- mutex_init(&devlink->lock);
- lockdep_set_class(&devlink->lock, &devlink->lock_key);
- mutex_init(&devlink->reporters_lock);
- mutex_init(&devlink->linecards_lock);
- refcount_set(&devlink->refcount, 1);
- init_completion(&devlink->comp);
-
- return devlink;
-}
-EXPORT_SYMBOL_GPL(devlink_alloc_ns);
-
-static void
-devlink_trap_policer_notify(struct devlink *devlink,
- const struct devlink_trap_policer_item *policer_item,
- enum devlink_command cmd);
-static void
-devlink_trap_group_notify(struct devlink *devlink,
- const struct devlink_trap_group_item *group_item,
- enum devlink_command cmd);
-static void devlink_trap_notify(struct devlink *devlink,
- const struct devlink_trap_item *trap_item,
- enum devlink_command cmd);
-
-static void devlink_notify_register(struct devlink *devlink)
-{
- struct devlink_trap_policer_item *policer_item;
- struct devlink_trap_group_item *group_item;
- struct devlink_param_item *param_item;
- struct devlink_trap_item *trap_item;
- struct devlink_port *devlink_port;
- struct devlink_linecard *linecard;
- struct devlink_rate *rate_node;
- struct devlink_region *region;
-
- devlink_notify(devlink, DEVLINK_CMD_NEW);
- list_for_each_entry(linecard, &devlink->linecard_list, list)
- devlink_linecard_notify(linecard, DEVLINK_CMD_LINECARD_NEW);
-
- list_for_each_entry(devlink_port, &devlink->port_list, list)
- devlink_port_notify(devlink_port, DEVLINK_CMD_PORT_NEW);
-
- list_for_each_entry(policer_item, &devlink->trap_policer_list, list)
- devlink_trap_policer_notify(devlink, policer_item,
- DEVLINK_CMD_TRAP_POLICER_NEW);
-
- list_for_each_entry(group_item, &devlink->trap_group_list, list)
- devlink_trap_group_notify(devlink, group_item,
- DEVLINK_CMD_TRAP_GROUP_NEW);
-
- list_for_each_entry(trap_item, &devlink->trap_list, list)
- devlink_trap_notify(devlink, trap_item, DEVLINK_CMD_TRAP_NEW);
-
- list_for_each_entry(rate_node, &devlink->rate_list, list)
- devlink_rate_notify(rate_node, DEVLINK_CMD_RATE_NEW);
-
- list_for_each_entry(region, &devlink->region_list, list)
- devlink_nl_region_notify(region, NULL, DEVLINK_CMD_REGION_NEW);
-
- list_for_each_entry(param_item, &devlink->param_list, list)
- devlink_param_notify(devlink, 0, param_item,
- DEVLINK_CMD_PARAM_NEW);
-}
-
-static void devlink_notify_unregister(struct devlink *devlink)
-{
- struct devlink_trap_policer_item *policer_item;
- struct devlink_trap_group_item *group_item;
- struct devlink_param_item *param_item;
- struct devlink_trap_item *trap_item;
- struct devlink_port *devlink_port;
- struct devlink_rate *rate_node;
- struct devlink_region *region;
-
- list_for_each_entry_reverse(param_item, &devlink->param_list, list)
- devlink_param_notify(devlink, 0, param_item,
- DEVLINK_CMD_PARAM_DEL);
-
- list_for_each_entry_reverse(region, &devlink->region_list, list)
- devlink_nl_region_notify(region, NULL, DEVLINK_CMD_REGION_DEL);
-
- list_for_each_entry_reverse(rate_node, &devlink->rate_list, list)
- devlink_rate_notify(rate_node, DEVLINK_CMD_RATE_DEL);
-
- list_for_each_entry_reverse(trap_item, &devlink->trap_list, list)
- devlink_trap_notify(devlink, trap_item, DEVLINK_CMD_TRAP_DEL);
-
- list_for_each_entry_reverse(group_item, &devlink->trap_group_list, list)
- devlink_trap_group_notify(devlink, group_item,
- DEVLINK_CMD_TRAP_GROUP_DEL);
- list_for_each_entry_reverse(policer_item, &devlink->trap_policer_list,
- list)
- devlink_trap_policer_notify(devlink, policer_item,
- DEVLINK_CMD_TRAP_POLICER_DEL);
-
- list_for_each_entry_reverse(devlink_port, &devlink->port_list, list)
- devlink_port_notify(devlink_port, DEVLINK_CMD_PORT_DEL);
- devlink_notify(devlink, DEVLINK_CMD_DEL);
-}
-
-/**
- * devlink_register - Register devlink instance
- *
- * @devlink: devlink
- */
-void devlink_register(struct devlink *devlink)
-{
- ASSERT_DEVLINK_NOT_REGISTERED(devlink);
- /* Make sure that we are in .probe() routine */
-
- xa_set_mark(&devlinks, devlink->index, DEVLINK_REGISTERED);
- devlink_notify_register(devlink);
-}
-EXPORT_SYMBOL_GPL(devlink_register);
-
-/**
- * devlink_unregister - Unregister devlink instance
- *
- * @devlink: devlink
- */
-void devlink_unregister(struct devlink *devlink)
-{
- ASSERT_DEVLINK_REGISTERED(devlink);
- /* Make sure that we are in .remove() routine */
-
- xa_set_mark(&devlinks, devlink->index, DEVLINK_UNREGISTERING);
- devlink_put(devlink);
- wait_for_completion(&devlink->comp);
-
- devlink_notify_unregister(devlink);
- xa_clear_mark(&devlinks, devlink->index, DEVLINK_REGISTERED);
- xa_clear_mark(&devlinks, devlink->index, DEVLINK_UNREGISTERING);
-}
-EXPORT_SYMBOL_GPL(devlink_unregister);
-
-/**
- * devlink_free - Free devlink instance resources
- *
- * @devlink: devlink
- */
-void devlink_free(struct devlink *devlink)
-{
- ASSERT_DEVLINK_NOT_REGISTERED(devlink);
-
- mutex_destroy(&devlink->linecards_lock);
- mutex_destroy(&devlink->reporters_lock);
- mutex_destroy(&devlink->lock);
- lockdep_unregister_key(&devlink->lock_key);
- WARN_ON(!list_empty(&devlink->trap_policer_list));
- WARN_ON(!list_empty(&devlink->trap_group_list));
- WARN_ON(!list_empty(&devlink->trap_list));
- WARN_ON(!list_empty(&devlink->reporter_list));
- WARN_ON(!list_empty(&devlink->region_list));
- WARN_ON(!list_empty(&devlink->param_list));
- WARN_ON(!list_empty(&devlink->resource_list));
- WARN_ON(!list_empty(&devlink->dpipe_table_list));
- WARN_ON(!list_empty(&devlink->sb_list));
- WARN_ON(!list_empty(&devlink->rate_list));
- WARN_ON(!list_empty(&devlink->linecard_list));
- WARN_ON(!list_empty(&devlink->port_list));
-
- xa_destroy(&devlink->snapshot_ids);
- xa_erase(&devlinks, devlink->index);
-
- kfree(devlink);
-}
-EXPORT_SYMBOL_GPL(devlink_free);
-
-static void devlink_port_type_warn(struct work_struct *work)
-{
- struct devlink_port *port = container_of(to_delayed_work(work),
- struct devlink_port,
- type_warn_dw);
- dev_warn(port->devlink->dev, "Type was not set for devlink port.");
-}
-
-static bool devlink_port_type_should_warn(struct devlink_port *devlink_port)
-{
- /* Ignore CPU and DSA flavours. */
- return devlink_port->attrs.flavour != DEVLINK_PORT_FLAVOUR_CPU &&
- devlink_port->attrs.flavour != DEVLINK_PORT_FLAVOUR_DSA &&
- devlink_port->attrs.flavour != DEVLINK_PORT_FLAVOUR_UNUSED;
-}
-
-#define DEVLINK_PORT_TYPE_WARN_TIMEOUT (HZ * 3600)
-
-static void devlink_port_type_warn_schedule(struct devlink_port *devlink_port)
-{
- if (!devlink_port_type_should_warn(devlink_port))
- return;
- /* Schedule a work to WARN in case driver does not set port
- * type within timeout.
- */
- schedule_delayed_work(&devlink_port->type_warn_dw,
- DEVLINK_PORT_TYPE_WARN_TIMEOUT);
-}
-
-static void devlink_port_type_warn_cancel(struct devlink_port *devlink_port)
-{
- if (!devlink_port_type_should_warn(devlink_port))
- return;
- cancel_delayed_work_sync(&devlink_port->type_warn_dw);
-}
-
-/**
- * devlink_port_init() - Init devlink port
- *
- * @devlink: devlink
- * @devlink_port: devlink port
- *
- * Initialize essencial stuff that is needed for functions
- * that may be called before devlink port registration.
- * Call to this function is optional and not needed
- * in case the driver does not use such functions.
- */
-void devlink_port_init(struct devlink *devlink,
- struct devlink_port *devlink_port)
-{
- if (devlink_port->initialized)
- return;
- devlink_port->devlink = devlink;
- INIT_LIST_HEAD(&devlink_port->region_list);
- devlink_port->initialized = true;
-}
-EXPORT_SYMBOL_GPL(devlink_port_init);
-
-/**
- * devlink_port_fini() - Deinitialize devlink port
- *
- * @devlink_port: devlink port
- *
- * Deinitialize essencial stuff that is in use for functions
- * that may be called after devlink port unregistration.
- * Call to this function is optional and not needed
- * in case the driver does not use such functions.
- */
-void devlink_port_fini(struct devlink_port *devlink_port)
-{
- WARN_ON(!list_empty(&devlink_port->region_list));
-}
-EXPORT_SYMBOL_GPL(devlink_port_fini);
-
-/**
- * devl_port_register() - Register devlink port
- *
- * @devlink: devlink
- * @devlink_port: devlink port
- * @port_index: driver-specific numerical identifier of the port
- *
- * Register devlink port with provided port index. User can use
- * any indexing, even hw-related one. devlink_port structure
- * is convenient to be embedded inside user driver private structure.
- * Note that the caller should take care of zeroing the devlink_port
- * structure.
- */
-int devl_port_register(struct devlink *devlink,
- struct devlink_port *devlink_port,
- unsigned int port_index)
-{
- devl_assert_locked(devlink);
-
- if (devlink_port_index_exists(devlink, port_index))
- return -EEXIST;
-
- ASSERT_DEVLINK_PORT_NOT_REGISTERED(devlink_port);
-
- devlink_port_init(devlink, devlink_port);
- devlink_port->registered = true;
- devlink_port->index = port_index;
- spin_lock_init(&devlink_port->type_lock);
- INIT_LIST_HEAD(&devlink_port->reporter_list);
- mutex_init(&devlink_port->reporters_lock);
- list_add_tail(&devlink_port->list, &devlink->port_list);
-
- INIT_DELAYED_WORK(&devlink_port->type_warn_dw, &devlink_port_type_warn);
- devlink_port_type_warn_schedule(devlink_port);
- devlink_port_notify(devlink_port, DEVLINK_CMD_PORT_NEW);
- return 0;
-}
-EXPORT_SYMBOL_GPL(devl_port_register);
-
-/**
- * devlink_port_register - Register devlink port
- *
- * @devlink: devlink
- * @devlink_port: devlink port
- * @port_index: driver-specific numerical identifier of the port
- *
- * Register devlink port with provided port index. User can use
- * any indexing, even hw-related one. devlink_port structure
- * is convenient to be embedded inside user driver private structure.
- * Note that the caller should take care of zeroing the devlink_port
- * structure.
- *
- * Context: Takes and release devlink->lock <mutex>.
- */
-int devlink_port_register(struct devlink *devlink,
- struct devlink_port *devlink_port,
- unsigned int port_index)
-{
- int err;
-
- devl_lock(devlink);
- err = devl_port_register(devlink, devlink_port, port_index);
- devl_unlock(devlink);
- return err;
-}
-EXPORT_SYMBOL_GPL(devlink_port_register);
-
-/**
- * devl_port_unregister() - Unregister devlink port
- *
- * @devlink_port: devlink port
- */
-void devl_port_unregister(struct devlink_port *devlink_port)
-{
- lockdep_assert_held(&devlink_port->devlink->lock);
-
- devlink_port_type_warn_cancel(devlink_port);
- devlink_port_notify(devlink_port, DEVLINK_CMD_PORT_DEL);
- list_del(&devlink_port->list);
- WARN_ON(!list_empty(&devlink_port->reporter_list));
- mutex_destroy(&devlink_port->reporters_lock);
- devlink_port->registered = false;
-}
-EXPORT_SYMBOL_GPL(devl_port_unregister);
-
-/**
- * devlink_port_unregister - Unregister devlink port
- *
- * @devlink_port: devlink port
- *
- * Context: Takes and release devlink->lock <mutex>.
- */
-void devlink_port_unregister(struct devlink_port *devlink_port)
-{
- struct devlink *devlink = devlink_port->devlink;
-
- devl_lock(devlink);
- devl_port_unregister(devlink_port);
- devl_unlock(devlink);
-}
-EXPORT_SYMBOL_GPL(devlink_port_unregister);
-
-static void __devlink_port_type_set(struct devlink_port *devlink_port,
- enum devlink_port_type type,
- void *type_dev)
-{
- ASSERT_DEVLINK_PORT_REGISTERED(devlink_port);
-
- devlink_port_type_warn_cancel(devlink_port);
- spin_lock_bh(&devlink_port->type_lock);
- devlink_port->type = type;
- devlink_port->type_dev = type_dev;
- spin_unlock_bh(&devlink_port->type_lock);
- devlink_port_notify(devlink_port, DEVLINK_CMD_PORT_NEW);
-}
-
-static void devlink_port_type_netdev_checks(struct devlink_port *devlink_port,
- struct net_device *netdev)
-{
- const struct net_device_ops *ops = netdev->netdev_ops;
-
- /* If driver registers devlink port, it should set devlink port
- * attributes accordingly so the compat functions are called
- * and the original ops are not used.
- */
- if (ops->ndo_get_phys_port_name) {
- /* Some drivers use the same set of ndos for netdevs
- * that have devlink_port registered and also for
- * those who don't. Make sure that ndo_get_phys_port_name
- * returns -EOPNOTSUPP here in case it is defined.
- * Warn if not.
- */
- char name[IFNAMSIZ];
- int err;
-
- err = ops->ndo_get_phys_port_name(netdev, name, sizeof(name));
- WARN_ON(err != -EOPNOTSUPP);
- }
- if (ops->ndo_get_port_parent_id) {
- /* Some drivers use the same set of ndos for netdevs
- * that have devlink_port registered and also for
- * those who don't. Make sure that ndo_get_port_parent_id
- * returns -EOPNOTSUPP here in case it is defined.
- * Warn if not.
- */
- struct netdev_phys_item_id ppid;
- int err;
-
- err = ops->ndo_get_port_parent_id(netdev, &ppid);
- WARN_ON(err != -EOPNOTSUPP);
- }
-}
-
-/**
- * devlink_port_type_eth_set - Set port type to Ethernet
- *
- * @devlink_port: devlink port
- * @netdev: related netdevice
- */
-void devlink_port_type_eth_set(struct devlink_port *devlink_port,
- struct net_device *netdev)
-{
- if (netdev)
- devlink_port_type_netdev_checks(devlink_port, netdev);
- else
- dev_warn(devlink_port->devlink->dev,
- "devlink port type for port %d set to Ethernet without a software interface reference, device type not supported by the kernel?\n",
- devlink_port->index);
-
- __devlink_port_type_set(devlink_port, DEVLINK_PORT_TYPE_ETH, netdev);
-}
-EXPORT_SYMBOL_GPL(devlink_port_type_eth_set);
-
-/**
- * devlink_port_type_ib_set - Set port type to InfiniBand
- *
- * @devlink_port: devlink port
- * @ibdev: related IB device
- */
-void devlink_port_type_ib_set(struct devlink_port *devlink_port,
- struct ib_device *ibdev)
-{
- __devlink_port_type_set(devlink_port, DEVLINK_PORT_TYPE_IB, ibdev);
-}
-EXPORT_SYMBOL_GPL(devlink_port_type_ib_set);
-
-/**
- * devlink_port_type_clear - Clear port type
- *
- * @devlink_port: devlink port
- */
-void devlink_port_type_clear(struct devlink_port *devlink_port)
-{
- __devlink_port_type_set(devlink_port, DEVLINK_PORT_TYPE_NOTSET, NULL);
- devlink_port_type_warn_schedule(devlink_port);
-}
-EXPORT_SYMBOL_GPL(devlink_port_type_clear);
-
-static int __devlink_port_attrs_set(struct devlink_port *devlink_port,
- enum devlink_port_flavour flavour)
-{
- struct devlink_port_attrs *attrs = &devlink_port->attrs;
-
- devlink_port->attrs_set = true;
- attrs->flavour = flavour;
- if (attrs->switch_id.id_len) {
- devlink_port->switch_port = true;
- if (WARN_ON(attrs->switch_id.id_len > MAX_PHYS_ITEM_ID_LEN))
- attrs->switch_id.id_len = MAX_PHYS_ITEM_ID_LEN;
- } else {
- devlink_port->switch_port = false;
- }
- return 0;
-}
-
-/**
- * devlink_port_attrs_set - Set port attributes
- *
- * @devlink_port: devlink port
- * @attrs: devlink port attrs
- */
-void devlink_port_attrs_set(struct devlink_port *devlink_port,
- struct devlink_port_attrs *attrs)
-{
- int ret;
-
- ASSERT_DEVLINK_PORT_NOT_REGISTERED(devlink_port);
-
- devlink_port->attrs = *attrs;
- ret = __devlink_port_attrs_set(devlink_port, attrs->flavour);
- if (ret)
- return;
- WARN_ON(attrs->splittable && attrs->split);
-}
-EXPORT_SYMBOL_GPL(devlink_port_attrs_set);
-
-/**
- * devlink_port_attrs_pci_pf_set - Set PCI PF port attributes
- *
- * @devlink_port: devlink port
- * @controller: associated controller number for the devlink port instance
- * @pf: associated PF for the devlink port instance
- * @external: indicates if the port is for an external controller
- */
-void devlink_port_attrs_pci_pf_set(struct devlink_port *devlink_port, u32 controller,
- u16 pf, bool external)
-{
- struct devlink_port_attrs *attrs = &devlink_port->attrs;
- int ret;
-
- ASSERT_DEVLINK_PORT_NOT_REGISTERED(devlink_port);
-
- ret = __devlink_port_attrs_set(devlink_port,
- DEVLINK_PORT_FLAVOUR_PCI_PF);
- if (ret)
- return;
- attrs->pci_pf.controller = controller;
- attrs->pci_pf.pf = pf;
- attrs->pci_pf.external = external;
-}
-EXPORT_SYMBOL_GPL(devlink_port_attrs_pci_pf_set);
-
-/**
- * devlink_port_attrs_pci_vf_set - Set PCI VF port attributes
- *
- * @devlink_port: devlink port
- * @controller: associated controller number for the devlink port instance
- * @pf: associated PF for the devlink port instance
- * @vf: associated VF of a PF for the devlink port instance
- * @external: indicates if the port is for an external controller
- */
-void devlink_port_attrs_pci_vf_set(struct devlink_port *devlink_port, u32 controller,
- u16 pf, u16 vf, bool external)
-{
- struct devlink_port_attrs *attrs = &devlink_port->attrs;
- int ret;
-
- ASSERT_DEVLINK_PORT_NOT_REGISTERED(devlink_port);
-
- ret = __devlink_port_attrs_set(devlink_port,
- DEVLINK_PORT_FLAVOUR_PCI_VF);
- if (ret)
- return;
- attrs->pci_vf.controller = controller;
- attrs->pci_vf.pf = pf;
- attrs->pci_vf.vf = vf;
- attrs->pci_vf.external = external;
-}
-EXPORT_SYMBOL_GPL(devlink_port_attrs_pci_vf_set);
-
-/**
- * devlink_port_attrs_pci_sf_set - Set PCI SF port attributes
- *
- * @devlink_port: devlink port
- * @controller: associated controller number for the devlink port instance
- * @pf: associated PF for the devlink port instance
- * @sf: associated SF of a PF for the devlink port instance
- * @external: indicates if the port is for an external controller
- */
-void devlink_port_attrs_pci_sf_set(struct devlink_port *devlink_port, u32 controller,
- u16 pf, u32 sf, bool external)
-{
- struct devlink_port_attrs *attrs = &devlink_port->attrs;
- int ret;
-
- ASSERT_DEVLINK_PORT_NOT_REGISTERED(devlink_port);
-
- ret = __devlink_port_attrs_set(devlink_port,
- DEVLINK_PORT_FLAVOUR_PCI_SF);
- if (ret)
- return;
- attrs->pci_sf.controller = controller;
- attrs->pci_sf.pf = pf;
- attrs->pci_sf.sf = sf;
- attrs->pci_sf.external = external;
-}
-EXPORT_SYMBOL_GPL(devlink_port_attrs_pci_sf_set);
-
-/**
- * devl_rate_leaf_create - create devlink rate leaf
- * @devlink_port: devlink port object to create rate object on
- * @priv: driver private data
- *
- * Create devlink rate object of type leaf on provided @devlink_port.
- */
-int devl_rate_leaf_create(struct devlink_port *devlink_port, void *priv)
-{
- struct devlink *devlink = devlink_port->devlink;
- struct devlink_rate *devlink_rate;
-
- devl_assert_locked(devlink_port->devlink);
-
- if (WARN_ON(devlink_port->devlink_rate))
- return -EBUSY;
-
- devlink_rate = kzalloc(sizeof(*devlink_rate), GFP_KERNEL);
- if (!devlink_rate)
- return -ENOMEM;
-
- devlink_rate->type = DEVLINK_RATE_TYPE_LEAF;
- devlink_rate->devlink = devlink;
- devlink_rate->devlink_port = devlink_port;
- devlink_rate->priv = priv;
- list_add_tail(&devlink_rate->list, &devlink->rate_list);
- devlink_port->devlink_rate = devlink_rate;
- devlink_rate_notify(devlink_rate, DEVLINK_CMD_RATE_NEW);
-
- return 0;
-}
-EXPORT_SYMBOL_GPL(devl_rate_leaf_create);
-
-/**
- * devl_rate_leaf_destroy - destroy devlink rate leaf
- *
- * @devlink_port: devlink port linked to the rate object
- *
- * Destroy the devlink rate object of type leaf on provided @devlink_port.
- */
-void devl_rate_leaf_destroy(struct devlink_port *devlink_port)
-{
- struct devlink_rate *devlink_rate = devlink_port->devlink_rate;
-
- devl_assert_locked(devlink_port->devlink);
- if (!devlink_rate)
- return;
-
- devlink_rate_notify(devlink_rate, DEVLINK_CMD_RATE_DEL);
- if (devlink_rate->parent)
- refcount_dec(&devlink_rate->parent->refcnt);
- list_del(&devlink_rate->list);
- devlink_port->devlink_rate = NULL;
- kfree(devlink_rate);
-}
-EXPORT_SYMBOL_GPL(devl_rate_leaf_destroy);
-
-/**
- * devl_rate_nodes_destroy - destroy all devlink rate nodes on device
- * @devlink: devlink instance
- *
- * Unset parent for all rate objects and destroy all rate nodes
- * on specified device.
- */
-void devl_rate_nodes_destroy(struct devlink *devlink)
-{
- static struct devlink_rate *devlink_rate, *tmp;
- const struct devlink_ops *ops = devlink->ops;
-
- devl_assert_locked(devlink);
-
- list_for_each_entry(devlink_rate, &devlink->rate_list, list) {
- if (!devlink_rate->parent)
- continue;
-
- refcount_dec(&devlink_rate->parent->refcnt);
- if (devlink_rate_is_leaf(devlink_rate))
- ops->rate_leaf_parent_set(devlink_rate, NULL, devlink_rate->priv,
- NULL, NULL);
- else if (devlink_rate_is_node(devlink_rate))
- ops->rate_node_parent_set(devlink_rate, NULL, devlink_rate->priv,
- NULL, NULL);
- }
- list_for_each_entry_safe(devlink_rate, tmp, &devlink->rate_list, list) {
- if (devlink_rate_is_node(devlink_rate)) {
- ops->rate_node_del(devlink_rate, devlink_rate->priv, NULL);
- list_del(&devlink_rate->list);
- kfree(devlink_rate->name);
- kfree(devlink_rate);
- }
- }
-}
-EXPORT_SYMBOL_GPL(devl_rate_nodes_destroy);
-
-/**
- * devlink_port_linecard_set - Link port with a linecard
- *
- * @devlink_port: devlink port
- * @linecard: devlink linecard
- */
-void devlink_port_linecard_set(struct devlink_port *devlink_port,
- struct devlink_linecard *linecard)
-{
- ASSERT_DEVLINK_PORT_NOT_REGISTERED(devlink_port);
-
- devlink_port->linecard = linecard;
-}
-EXPORT_SYMBOL_GPL(devlink_port_linecard_set);
-
-static int __devlink_port_phys_port_name_get(struct devlink_port *devlink_port,
- char *name, size_t len)
-{
- struct devlink_port_attrs *attrs = &devlink_port->attrs;
- int n = 0;
-
- if (!devlink_port->attrs_set)
- return -EOPNOTSUPP;
-
- switch (attrs->flavour) {
- case DEVLINK_PORT_FLAVOUR_PHYSICAL:
- if (devlink_port->linecard)
- n = snprintf(name, len, "l%u",
- devlink_port->linecard->index);
- if (n < len)
- n += snprintf(name + n, len - n, "p%u",
- attrs->phys.port_number);
- if (n < len && attrs->split)
- n += snprintf(name + n, len - n, "s%u",
- attrs->phys.split_subport_number);
- break;
- case DEVLINK_PORT_FLAVOUR_CPU:
- case DEVLINK_PORT_FLAVOUR_DSA:
- case DEVLINK_PORT_FLAVOUR_UNUSED:
- /* As CPU and DSA ports do not have a netdevice associated
- * case should not ever happen.
- */
- WARN_ON(1);
- return -EINVAL;
- case DEVLINK_PORT_FLAVOUR_PCI_PF:
- if (attrs->pci_pf.external) {
- n = snprintf(name, len, "c%u", attrs->pci_pf.controller);
- if (n >= len)
- return -EINVAL;
- len -= n;
- name += n;
- }
- n = snprintf(name, len, "pf%u", attrs->pci_pf.pf);
- break;
- case DEVLINK_PORT_FLAVOUR_PCI_VF:
- if (attrs->pci_vf.external) {
- n = snprintf(name, len, "c%u", attrs->pci_vf.controller);
- if (n >= len)
- return -EINVAL;
- len -= n;
- name += n;
- }
- n = snprintf(name, len, "pf%uvf%u",
- attrs->pci_vf.pf, attrs->pci_vf.vf);
- break;
- case DEVLINK_PORT_FLAVOUR_PCI_SF:
- if (attrs->pci_sf.external) {
- n = snprintf(name, len, "c%u", attrs->pci_sf.controller);
- if (n >= len)
- return -EINVAL;
- len -= n;
- name += n;
- }
- n = snprintf(name, len, "pf%usf%u", attrs->pci_sf.pf,
- attrs->pci_sf.sf);
- break;
- case DEVLINK_PORT_FLAVOUR_VIRTUAL:
- return -EOPNOTSUPP;
- }
-
- if (n >= len)
- return -EINVAL;
-
- return 0;
-}
-
-static int devlink_linecard_types_init(struct devlink_linecard *linecard)
-{
- struct devlink_linecard_type *linecard_type;
- unsigned int count;
- int i;
-
- count = linecard->ops->types_count(linecard, linecard->priv);
- linecard->types = kmalloc_array(count, sizeof(*linecard_type),
- GFP_KERNEL);
- if (!linecard->types)
- return -ENOMEM;
- linecard->types_count = count;
-
- for (i = 0; i < count; i++) {
- linecard_type = &linecard->types[i];
- linecard->ops->types_get(linecard, linecard->priv, i,
- &linecard_type->type,
- &linecard_type->priv);
- }
- return 0;
-}
-
-static void devlink_linecard_types_fini(struct devlink_linecard *linecard)
-{
- kfree(linecard->types);
-}
-
-/**
- * devlink_linecard_create - Create devlink linecard
- *
- * @devlink: devlink
- * @linecard_index: driver-specific numerical identifier of the linecard
- * @ops: linecards ops
- * @priv: user priv pointer
- *
- * Create devlink linecard instance with provided linecard index.
- * Caller can use any indexing, even hw-related one.
- *
- * Return: Line card structure or an ERR_PTR() encoded error code.
- */
-struct devlink_linecard *
-devlink_linecard_create(struct devlink *devlink, unsigned int linecard_index,
- const struct devlink_linecard_ops *ops, void *priv)
-{
- struct devlink_linecard *linecard;
- int err;
-
- if (WARN_ON(!ops || !ops->provision || !ops->unprovision ||
- !ops->types_count || !ops->types_get))
- return ERR_PTR(-EINVAL);
-
- mutex_lock(&devlink->linecards_lock);
- if (devlink_linecard_index_exists(devlink, linecard_index)) {
- mutex_unlock(&devlink->linecards_lock);
- return ERR_PTR(-EEXIST);
- }
-
- linecard = kzalloc(sizeof(*linecard), GFP_KERNEL);
- if (!linecard) {
- mutex_unlock(&devlink->linecards_lock);
- return ERR_PTR(-ENOMEM);
- }
-
- linecard->devlink = devlink;
- linecard->index = linecard_index;
- linecard->ops = ops;
- linecard->priv = priv;
- linecard->state = DEVLINK_LINECARD_STATE_UNPROVISIONED;
- mutex_init(&linecard->state_lock);
-
- err = devlink_linecard_types_init(linecard);
- if (err) {
- mutex_destroy(&linecard->state_lock);
- kfree(linecard);
- mutex_unlock(&devlink->linecards_lock);
- return ERR_PTR(err);
- }
-
- list_add_tail(&linecard->list, &devlink->linecard_list);
- refcount_set(&linecard->refcount, 1);
- mutex_unlock(&devlink->linecards_lock);
- devlink_linecard_notify(linecard, DEVLINK_CMD_LINECARD_NEW);
- return linecard;
-}
-EXPORT_SYMBOL_GPL(devlink_linecard_create);
-
-/**
- * devlink_linecard_destroy - Destroy devlink linecard
- *
- * @linecard: devlink linecard
- */
-void devlink_linecard_destroy(struct devlink_linecard *linecard)
-{
- struct devlink *devlink = linecard->devlink;
-
- devlink_linecard_notify(linecard, DEVLINK_CMD_LINECARD_DEL);
- mutex_lock(&devlink->linecards_lock);
- list_del(&linecard->list);
- devlink_linecard_types_fini(linecard);
- mutex_unlock(&devlink->linecards_lock);
- devlink_linecard_put(linecard);
-}
-EXPORT_SYMBOL_GPL(devlink_linecard_destroy);
-
-/**
- * devlink_linecard_provision_set - Set provisioning on linecard
- *
- * @linecard: devlink linecard
- * @type: linecard type
- *
- * This is either called directly from the provision() op call or
- * as a result of the provision() op call asynchronously.
- */
-void devlink_linecard_provision_set(struct devlink_linecard *linecard,
- const char *type)
-{
- mutex_lock(&linecard->state_lock);
- WARN_ON(linecard->type && strcmp(linecard->type, type));
- linecard->state = DEVLINK_LINECARD_STATE_PROVISIONED;
- linecard->type = type;
- devlink_linecard_notify(linecard, DEVLINK_CMD_LINECARD_NEW);
- mutex_unlock(&linecard->state_lock);
-}
-EXPORT_SYMBOL_GPL(devlink_linecard_provision_set);
-
-/**
- * devlink_linecard_provision_clear - Clear provisioning on linecard
- *
- * @linecard: devlink linecard
- *
- * This is either called directly from the unprovision() op call or
- * as a result of the unprovision() op call asynchronously.
- */
-void devlink_linecard_provision_clear(struct devlink_linecard *linecard)
-{
- mutex_lock(&linecard->state_lock);
- WARN_ON(linecard->nested_devlink);
- linecard->state = DEVLINK_LINECARD_STATE_UNPROVISIONED;
- linecard->type = NULL;
- devlink_linecard_notify(linecard, DEVLINK_CMD_LINECARD_NEW);
- mutex_unlock(&linecard->state_lock);
-}
-EXPORT_SYMBOL_GPL(devlink_linecard_provision_clear);
-
-/**
- * devlink_linecard_provision_fail - Fail provisioning on linecard
- *
- * @linecard: devlink linecard
- *
- * This is either called directly from the provision() op call or
- * as a result of the provision() op call asynchronously.
- */
-void devlink_linecard_provision_fail(struct devlink_linecard *linecard)
-{
- mutex_lock(&linecard->state_lock);
- WARN_ON(linecard->nested_devlink);
- linecard->state = DEVLINK_LINECARD_STATE_PROVISIONING_FAILED;
- devlink_linecard_notify(linecard, DEVLINK_CMD_LINECARD_NEW);
- mutex_unlock(&linecard->state_lock);
-}
-EXPORT_SYMBOL_GPL(devlink_linecard_provision_fail);
-
-/**
- * devlink_linecard_activate - Set linecard active
- *
- * @linecard: devlink linecard
- */
-void devlink_linecard_activate(struct devlink_linecard *linecard)
-{
- mutex_lock(&linecard->state_lock);
- WARN_ON(linecard->state != DEVLINK_LINECARD_STATE_PROVISIONED);
- linecard->state = DEVLINK_LINECARD_STATE_ACTIVE;
- devlink_linecard_notify(linecard, DEVLINK_CMD_LINECARD_NEW);
- mutex_unlock(&linecard->state_lock);
-}
-EXPORT_SYMBOL_GPL(devlink_linecard_activate);
-
-/**
- * devlink_linecard_deactivate - Set linecard inactive
- *
- * @linecard: devlink linecard
- */
-void devlink_linecard_deactivate(struct devlink_linecard *linecard)
-{
- mutex_lock(&linecard->state_lock);
- switch (linecard->state) {
- case DEVLINK_LINECARD_STATE_ACTIVE:
- linecard->state = DEVLINK_LINECARD_STATE_PROVISIONED;
- devlink_linecard_notify(linecard, DEVLINK_CMD_LINECARD_NEW);
- break;
- case DEVLINK_LINECARD_STATE_UNPROVISIONING:
- /* Line card is being deactivated as part
- * of unprovisioning flow.
- */
- break;
- default:
- WARN_ON(1);
- break;
- }
- mutex_unlock(&linecard->state_lock);
-}
-EXPORT_SYMBOL_GPL(devlink_linecard_deactivate);
-
-/**
- * devlink_linecard_nested_dl_set - Attach/detach nested devlink
- * instance to linecard.
- *
- * @linecard: devlink linecard
- * @nested_devlink: devlink instance to attach or NULL to detach
- */
-void devlink_linecard_nested_dl_set(struct devlink_linecard *linecard,
- struct devlink *nested_devlink)
-{
- mutex_lock(&linecard->state_lock);
- linecard->nested_devlink = nested_devlink;
- devlink_linecard_notify(linecard, DEVLINK_CMD_LINECARD_NEW);
- mutex_unlock(&linecard->state_lock);
-}
-EXPORT_SYMBOL_GPL(devlink_linecard_nested_dl_set);
-
-int devl_sb_register(struct devlink *devlink, unsigned int sb_index,
- u32 size, u16 ingress_pools_count,
- u16 egress_pools_count, u16 ingress_tc_count,
- u16 egress_tc_count)
-{
- struct devlink_sb *devlink_sb;
-
- lockdep_assert_held(&devlink->lock);
-
- if (devlink_sb_index_exists(devlink, sb_index))
- return -EEXIST;
-
- devlink_sb = kzalloc(sizeof(*devlink_sb), GFP_KERNEL);
- if (!devlink_sb)
- return -ENOMEM;
- devlink_sb->index = sb_index;
- devlink_sb->size = size;
- devlink_sb->ingress_pools_count = ingress_pools_count;
- devlink_sb->egress_pools_count = egress_pools_count;
- devlink_sb->ingress_tc_count = ingress_tc_count;
- devlink_sb->egress_tc_count = egress_tc_count;
- list_add_tail(&devlink_sb->list, &devlink->sb_list);
- return 0;
-}
-EXPORT_SYMBOL_GPL(devl_sb_register);
-
-int devlink_sb_register(struct devlink *devlink, unsigned int sb_index,
- u32 size, u16 ingress_pools_count,
- u16 egress_pools_count, u16 ingress_tc_count,
- u16 egress_tc_count)
-{
- int err;
-
- devl_lock(devlink);
- err = devl_sb_register(devlink, sb_index, size, ingress_pools_count,
- egress_pools_count, ingress_tc_count,
- egress_tc_count);
- devl_unlock(devlink);
- return err;
-}
-EXPORT_SYMBOL_GPL(devlink_sb_register);
-
-void devl_sb_unregister(struct devlink *devlink, unsigned int sb_index)
-{
- struct devlink_sb *devlink_sb;
-
- lockdep_assert_held(&devlink->lock);
-
- devlink_sb = devlink_sb_get_by_index(devlink, sb_index);
- WARN_ON(!devlink_sb);
- list_del(&devlink_sb->list);
- kfree(devlink_sb);
-}
-EXPORT_SYMBOL_GPL(devl_sb_unregister);
-
-void devlink_sb_unregister(struct devlink *devlink, unsigned int sb_index)
-{
- devl_lock(devlink);
- devl_sb_unregister(devlink, sb_index);
- devl_unlock(devlink);
-}
-EXPORT_SYMBOL_GPL(devlink_sb_unregister);
-
-/**
- * devl_dpipe_headers_register - register dpipe headers
- *
- * @devlink: devlink
- * @dpipe_headers: dpipe header array
- *
- * Register the headers supported by hardware.
- */
-void devl_dpipe_headers_register(struct devlink *devlink,
- struct devlink_dpipe_headers *dpipe_headers)
-{
- lockdep_assert_held(&devlink->lock);
-
- devlink->dpipe_headers = dpipe_headers;
-}
-EXPORT_SYMBOL_GPL(devl_dpipe_headers_register);
-
-/**
- * devl_dpipe_headers_unregister - unregister dpipe headers
- *
- * @devlink: devlink
- *
- * Unregister the headers supported by hardware.
- */
-void devl_dpipe_headers_unregister(struct devlink *devlink)
-{
- lockdep_assert_held(&devlink->lock);
-
- devlink->dpipe_headers = NULL;
-}
-EXPORT_SYMBOL_GPL(devl_dpipe_headers_unregister);
-
-/**
- * devlink_dpipe_table_counter_enabled - check if counter allocation
- * required
- * @devlink: devlink
- * @table_name: tables name
- *
- * Used by driver to check if counter allocation is required.
- * After counter allocation is turned on the table entries
- * are updated to include counter statistics.
- *
- * After that point on the driver must respect the counter
- * state so that each entry added to the table is added
- * with a counter.
- */
-bool devlink_dpipe_table_counter_enabled(struct devlink *devlink,
- const char *table_name)
-{
- struct devlink_dpipe_table *table;
- bool enabled;
-
- rcu_read_lock();
- table = devlink_dpipe_table_find(&devlink->dpipe_table_list,
- table_name, devlink);
- enabled = false;
- if (table)
- enabled = table->counters_enabled;
- rcu_read_unlock();
- return enabled;
-}
-EXPORT_SYMBOL_GPL(devlink_dpipe_table_counter_enabled);
-
-/**
- * devl_dpipe_table_register - register dpipe table
- *
- * @devlink: devlink
- * @table_name: table name
- * @table_ops: table ops
- * @priv: priv
- * @counter_control_extern: external control for counters
- */
-int devl_dpipe_table_register(struct devlink *devlink,
- const char *table_name,
- struct devlink_dpipe_table_ops *table_ops,
- void *priv, bool counter_control_extern)
-{
- struct devlink_dpipe_table *table;
-
- lockdep_assert_held(&devlink->lock);
-
- if (WARN_ON(!table_ops->size_get))
- return -EINVAL;
-
- if (devlink_dpipe_table_find(&devlink->dpipe_table_list, table_name,
- devlink))
- return -EEXIST;
-
- table = kzalloc(sizeof(*table), GFP_KERNEL);
- if (!table)
- return -ENOMEM;
-
- table->name = table_name;
- table->table_ops = table_ops;
- table->priv = priv;
- table->counter_control_extern = counter_control_extern;
-
- list_add_tail_rcu(&table->list, &devlink->dpipe_table_list);
-
- return 0;
-}
-EXPORT_SYMBOL_GPL(devl_dpipe_table_register);
-
-/**
- * devl_dpipe_table_unregister - unregister dpipe table
- *
- * @devlink: devlink
- * @table_name: table name
- */
-void devl_dpipe_table_unregister(struct devlink *devlink,
- const char *table_name)
-{
- struct devlink_dpipe_table *table;
-
- lockdep_assert_held(&devlink->lock);
-
- table = devlink_dpipe_table_find(&devlink->dpipe_table_list,
- table_name, devlink);
- if (!table)
- return;
- list_del_rcu(&table->list);
- kfree_rcu(table, rcu);
-}
-EXPORT_SYMBOL_GPL(devl_dpipe_table_unregister);
-
-/**
- * devl_resource_register - devlink resource register
- *
- * @devlink: devlink
- * @resource_name: resource's name
- * @resource_size: resource's size
- * @resource_id: resource's id
- * @parent_resource_id: resource's parent id
- * @size_params: size parameters
- *
- * Generic resources should reuse the same names across drivers.
- * Please see the generic resources list at:
- * Documentation/networking/devlink/devlink-resource.rst
- */
-int devl_resource_register(struct devlink *devlink,
- const char *resource_name,
- u64 resource_size,
- u64 resource_id,
- u64 parent_resource_id,
- const struct devlink_resource_size_params *size_params)
-{
- struct devlink_resource *resource;
- struct list_head *resource_list;
- bool top_hierarchy;
-
- lockdep_assert_held(&devlink->lock);
-
- top_hierarchy = parent_resource_id == DEVLINK_RESOURCE_ID_PARENT_TOP;
-
- resource = devlink_resource_find(devlink, NULL, resource_id);
- if (resource)
- return -EINVAL;
-
- resource = kzalloc(sizeof(*resource), GFP_KERNEL);
- if (!resource)
- return -ENOMEM;
-
- if (top_hierarchy) {
- resource_list = &devlink->resource_list;
- } else {
- struct devlink_resource *parent_resource;
-
- parent_resource = devlink_resource_find(devlink, NULL,
- parent_resource_id);
- if (parent_resource) {
- resource_list = &parent_resource->resource_list;
- resource->parent = parent_resource;
- } else {
- kfree(resource);
- return -EINVAL;
- }
- }
-
- resource->name = resource_name;
- resource->size = resource_size;
- resource->size_new = resource_size;
- resource->id = resource_id;
- resource->size_valid = true;
- memcpy(&resource->size_params, size_params,
- sizeof(resource->size_params));
- INIT_LIST_HEAD(&resource->resource_list);
- list_add_tail(&resource->list, resource_list);
-
- return 0;
-}
-EXPORT_SYMBOL_GPL(devl_resource_register);
-
-/**
- * devlink_resource_register - devlink resource register
- *
- * @devlink: devlink
- * @resource_name: resource's name
- * @resource_size: resource's size
- * @resource_id: resource's id
- * @parent_resource_id: resource's parent id
- * @size_params: size parameters
- *
- * Generic resources should reuse the same names across drivers.
- * Please see the generic resources list at:
- * Documentation/networking/devlink/devlink-resource.rst
- *
- * Context: Takes and release devlink->lock <mutex>.
- */
-int devlink_resource_register(struct devlink *devlink,
- const char *resource_name,
- u64 resource_size,
- u64 resource_id,
- u64 parent_resource_id,
- const struct devlink_resource_size_params *size_params)
-{
- int err;
-
- devl_lock(devlink);
- err = devl_resource_register(devlink, resource_name, resource_size,
- resource_id, parent_resource_id, size_params);
- devl_unlock(devlink);
- return err;
-}
-EXPORT_SYMBOL_GPL(devlink_resource_register);
-
-static void devlink_resource_unregister(struct devlink *devlink,
- struct devlink_resource *resource)
-{
- struct devlink_resource *tmp, *child_resource;
-
- list_for_each_entry_safe(child_resource, tmp, &resource->resource_list,
- list) {
- devlink_resource_unregister(devlink, child_resource);
- list_del(&child_resource->list);
- kfree(child_resource);
- }
-}
-
-/**
- * devl_resources_unregister - free all resources
- *
- * @devlink: devlink
- */
-void devl_resources_unregister(struct devlink *devlink)
-{
- struct devlink_resource *tmp, *child_resource;
-
- lockdep_assert_held(&devlink->lock);
-
- list_for_each_entry_safe(child_resource, tmp, &devlink->resource_list,
- list) {
- devlink_resource_unregister(devlink, child_resource);
- list_del(&child_resource->list);
- kfree(child_resource);
- }
-}
-EXPORT_SYMBOL_GPL(devl_resources_unregister);
-
-/**
- * devlink_resources_unregister - free all resources
- *
- * @devlink: devlink
- *
- * Context: Takes and release devlink->lock <mutex>.
- */
-void devlink_resources_unregister(struct devlink *devlink)
-{
- devl_lock(devlink);
- devl_resources_unregister(devlink);
- devl_unlock(devlink);
-}
-EXPORT_SYMBOL_GPL(devlink_resources_unregister);
-
-/**
- * devl_resource_size_get - get and update size
- *
- * @devlink: devlink
- * @resource_id: the requested resource id
- * @p_resource_size: ptr to update
- */
-int devl_resource_size_get(struct devlink *devlink,
- u64 resource_id,
- u64 *p_resource_size)
-{
- struct devlink_resource *resource;
-
- lockdep_assert_held(&devlink->lock);
-
- resource = devlink_resource_find(devlink, NULL, resource_id);
- if (!resource)
- return -EINVAL;
- *p_resource_size = resource->size_new;
- resource->size = resource->size_new;
- return 0;
-}
-EXPORT_SYMBOL_GPL(devl_resource_size_get);
-
-/**
- * devl_dpipe_table_resource_set - set the resource id
- *
- * @devlink: devlink
- * @table_name: table name
- * @resource_id: resource id
- * @resource_units: number of resource's units consumed per table's entry
- */
-int devl_dpipe_table_resource_set(struct devlink *devlink,
- const char *table_name, u64 resource_id,
- u64 resource_units)
-{
- struct devlink_dpipe_table *table;
-
- table = devlink_dpipe_table_find(&devlink->dpipe_table_list,
- table_name, devlink);
- if (!table)
- return -EINVAL;
-
- table->resource_id = resource_id;
- table->resource_units = resource_units;
- table->resource_valid = true;
- return 0;
-}
-EXPORT_SYMBOL_GPL(devl_dpipe_table_resource_set);
-
-/**
- * devl_resource_occ_get_register - register occupancy getter
- *
- * @devlink: devlink
- * @resource_id: resource id
- * @occ_get: occupancy getter callback
- * @occ_get_priv: occupancy getter callback priv
- */
-void devl_resource_occ_get_register(struct devlink *devlink,
- u64 resource_id,
- devlink_resource_occ_get_t *occ_get,
- void *occ_get_priv)
-{
- struct devlink_resource *resource;
-
- lockdep_assert_held(&devlink->lock);
-
- resource = devlink_resource_find(devlink, NULL, resource_id);
- if (WARN_ON(!resource))
- return;
- WARN_ON(resource->occ_get);
-
- resource->occ_get = occ_get;
- resource->occ_get_priv = occ_get_priv;
-}
-EXPORT_SYMBOL_GPL(devl_resource_occ_get_register);
-
-/**
- * devlink_resource_occ_get_register - register occupancy getter
- *
- * @devlink: devlink
- * @resource_id: resource id
- * @occ_get: occupancy getter callback
- * @occ_get_priv: occupancy getter callback priv
- *
- * Context: Takes and release devlink->lock <mutex>.
- */
-void devlink_resource_occ_get_register(struct devlink *devlink,
- u64 resource_id,
- devlink_resource_occ_get_t *occ_get,
- void *occ_get_priv)
-{
- devl_lock(devlink);
- devl_resource_occ_get_register(devlink, resource_id,
- occ_get, occ_get_priv);
- devl_unlock(devlink);
-}
-EXPORT_SYMBOL_GPL(devlink_resource_occ_get_register);
-
-/**
- * devl_resource_occ_get_unregister - unregister occupancy getter
- *
- * @devlink: devlink
- * @resource_id: resource id
- */
-void devl_resource_occ_get_unregister(struct devlink *devlink,
- u64 resource_id)
-{
- struct devlink_resource *resource;
-
- lockdep_assert_held(&devlink->lock);
-
- resource = devlink_resource_find(devlink, NULL, resource_id);
- if (WARN_ON(!resource))
- return;
- WARN_ON(!resource->occ_get);
-
- resource->occ_get = NULL;
- resource->occ_get_priv = NULL;
-}
-EXPORT_SYMBOL_GPL(devl_resource_occ_get_unregister);
-
-/**
- * devlink_resource_occ_get_unregister - unregister occupancy getter
- *
- * @devlink: devlink
- * @resource_id: resource id
- *
- * Context: Takes and release devlink->lock <mutex>.
- */
-void devlink_resource_occ_get_unregister(struct devlink *devlink,
- u64 resource_id)
-{
- devl_lock(devlink);
- devl_resource_occ_get_unregister(devlink, resource_id);
- devl_unlock(devlink);
-}
-EXPORT_SYMBOL_GPL(devlink_resource_occ_get_unregister);
-
-static int devlink_param_verify(const struct devlink_param *param)
-{
- if (!param || !param->name || !param->supported_cmodes)
- return -EINVAL;
- if (param->generic)
- return devlink_param_generic_verify(param);
- else
- return devlink_param_driver_verify(param);
-}
-
-/**
- * devlink_params_register - register configuration parameters
- *
- * @devlink: devlink
- * @params: configuration parameters array
- * @params_count: number of parameters provided
- *
- * Register the configuration parameters supported by the driver.
- */
-int devlink_params_register(struct devlink *devlink,
- const struct devlink_param *params,
- size_t params_count)
-{
- const struct devlink_param *param = params;
- int i, err;
-
- ASSERT_DEVLINK_NOT_REGISTERED(devlink);
-
- for (i = 0; i < params_count; i++, param++) {
- err = devlink_param_register(devlink, param);
- if (err)
- goto rollback;
- }
- return 0;
-
-rollback:
- if (!i)
- return err;
-
- for (param--; i > 0; i--, param--)
- devlink_param_unregister(devlink, param);
- return err;
-}
-EXPORT_SYMBOL_GPL(devlink_params_register);
-
-/**
- * devlink_params_unregister - unregister configuration parameters
- * @devlink: devlink
- * @params: configuration parameters to unregister
- * @params_count: number of parameters provided
- */
-void devlink_params_unregister(struct devlink *devlink,
- const struct devlink_param *params,
- size_t params_count)
-{
- const struct devlink_param *param = params;
- int i;
-
- ASSERT_DEVLINK_NOT_REGISTERED(devlink);
-
- for (i = 0; i < params_count; i++, param++)
- devlink_param_unregister(devlink, param);
-}
-EXPORT_SYMBOL_GPL(devlink_params_unregister);
-
-/**
- * devlink_param_register - register one configuration parameter
- *
- * @devlink: devlink
- * @param: one configuration parameter
- *
- * Register the configuration parameter supported by the driver.
- * Return: returns 0 on successful registration or error code otherwise.
- */
-int devlink_param_register(struct devlink *devlink,
- const struct devlink_param *param)
-{
- struct devlink_param_item *param_item;
-
- ASSERT_DEVLINK_NOT_REGISTERED(devlink);
-
- WARN_ON(devlink_param_verify(param));
- WARN_ON(devlink_param_find_by_name(&devlink->param_list, param->name));
-
- if (param->supported_cmodes == BIT(DEVLINK_PARAM_CMODE_DRIVERINIT))
- WARN_ON(param->get || param->set);
- else
- WARN_ON(!param->get || !param->set);
-
- param_item = kzalloc(sizeof(*param_item), GFP_KERNEL);
- if (!param_item)
- return -ENOMEM;
-
- param_item->param = param;
-
- list_add_tail(&param_item->list, &devlink->param_list);
- return 0;
-}
-EXPORT_SYMBOL_GPL(devlink_param_register);
-
-/**
- * devlink_param_unregister - unregister one configuration parameter
- * @devlink: devlink
- * @param: configuration parameter to unregister
- */
-void devlink_param_unregister(struct devlink *devlink,
- const struct devlink_param *param)
-{
- struct devlink_param_item *param_item;
-
- ASSERT_DEVLINK_NOT_REGISTERED(devlink);
-
- param_item =
- devlink_param_find_by_name(&devlink->param_list, param->name);
- WARN_ON(!param_item);
- list_del(&param_item->list);
- kfree(param_item);
-}
-EXPORT_SYMBOL_GPL(devlink_param_unregister);
-
-/**
- * devlink_param_driverinit_value_get - get configuration parameter
- * value for driver initializing
- *
- * @devlink: devlink
- * @param_id: parameter ID
- * @init_val: value of parameter in driverinit configuration mode
- *
- * This function should be used by the driver to get driverinit
- * configuration for initialization after reload command.
- */
-int devlink_param_driverinit_value_get(struct devlink *devlink, u32 param_id,
- union devlink_param_value *init_val)
-{
- struct devlink_param_item *param_item;
-
- if (!devlink_reload_supported(devlink->ops))
- return -EOPNOTSUPP;
-
- param_item = devlink_param_find_by_id(&devlink->param_list, param_id);
- if (!param_item)
- return -EINVAL;
-
- if (!param_item->driverinit_value_valid ||
- !devlink_param_cmode_is_supported(param_item->param,
- DEVLINK_PARAM_CMODE_DRIVERINIT))
- return -EOPNOTSUPP;
-
- if (param_item->param->type == DEVLINK_PARAM_TYPE_STRING)
- strcpy(init_val->vstr, param_item->driverinit_value.vstr);
- else
- *init_val = param_item->driverinit_value;
-
- return 0;
-}
-EXPORT_SYMBOL_GPL(devlink_param_driverinit_value_get);
-
-/**
- * devlink_param_driverinit_value_set - set value of configuration
- * parameter for driverinit
- * configuration mode
- *
- * @devlink: devlink
- * @param_id: parameter ID
- * @init_val: value of parameter to set for driverinit configuration mode
- *
- * This function should be used by the driver to set driverinit
- * configuration mode default value.
- */
-int devlink_param_driverinit_value_set(struct devlink *devlink, u32 param_id,
- union devlink_param_value init_val)
-{
- struct devlink_param_item *param_item;
-
- ASSERT_DEVLINK_NOT_REGISTERED(devlink);
-
- param_item = devlink_param_find_by_id(&devlink->param_list, param_id);
- if (!param_item)
- return -EINVAL;
-
- if (!devlink_param_cmode_is_supported(param_item->param,
- DEVLINK_PARAM_CMODE_DRIVERINIT))
- return -EOPNOTSUPP;
-
- if (param_item->param->type == DEVLINK_PARAM_TYPE_STRING)
- strcpy(param_item->driverinit_value.vstr, init_val.vstr);
- else
- param_item->driverinit_value = init_val;
- param_item->driverinit_value_valid = true;
- return 0;
-}
-EXPORT_SYMBOL_GPL(devlink_param_driverinit_value_set);
-
-/**
- * devlink_param_value_changed - notify devlink on a parameter's value
- * change. Should be called by the driver
- * right after the change.
- *
- * @devlink: devlink
- * @param_id: parameter ID
- *
- * This function should be used by the driver to notify devlink on value
- * change, excluding driverinit configuration mode.
- * For driverinit configuration mode driver should use the function
- */
-void devlink_param_value_changed(struct devlink *devlink, u32 param_id)
-{
- struct devlink_param_item *param_item;
-
- param_item = devlink_param_find_by_id(&devlink->param_list, param_id);
- WARN_ON(!param_item);
-
- devlink_param_notify(devlink, 0, param_item, DEVLINK_CMD_PARAM_NEW);
-}
-EXPORT_SYMBOL_GPL(devlink_param_value_changed);
-
-/**
- * devl_region_create - create a new address region
- *
- * @devlink: devlink
- * @ops: region operations and name
- * @region_max_snapshots: Maximum supported number of snapshots for region
- * @region_size: size of region
- */
-struct devlink_region *devl_region_create(struct devlink *devlink,
- const struct devlink_region_ops *ops,
- u32 region_max_snapshots,
- u64 region_size)
-{
- struct devlink_region *region;
-
- devl_assert_locked(devlink);
-
- if (WARN_ON(!ops) || WARN_ON(!ops->destructor))
- return ERR_PTR(-EINVAL);
-
- if (devlink_region_get_by_name(devlink, ops->name))
- return ERR_PTR(-EEXIST);
-
- region = kzalloc(sizeof(*region), GFP_KERNEL);
- if (!region)
- return ERR_PTR(-ENOMEM);
-
- region->devlink = devlink;
- region->max_snapshots = region_max_snapshots;
- region->ops = ops;
- region->size = region_size;
- INIT_LIST_HEAD(&region->snapshot_list);
- mutex_init(&region->snapshot_lock);
- list_add_tail(&region->list, &devlink->region_list);
- devlink_nl_region_notify(region, NULL, DEVLINK_CMD_REGION_NEW);
-
- return region;
-}
-EXPORT_SYMBOL_GPL(devl_region_create);
-
-/**
- * devlink_region_create - create a new address region
- *
- * @devlink: devlink
- * @ops: region operations and name
- * @region_max_snapshots: Maximum supported number of snapshots for region
- * @region_size: size of region
- *
- * Context: Takes and release devlink->lock <mutex>.
- */
-struct devlink_region *
-devlink_region_create(struct devlink *devlink,
- const struct devlink_region_ops *ops,
- u32 region_max_snapshots, u64 region_size)
-{
- struct devlink_region *region;
-
- devl_lock(devlink);
- region = devl_region_create(devlink, ops, region_max_snapshots,
- region_size);
- devl_unlock(devlink);
- return region;
-}
-EXPORT_SYMBOL_GPL(devlink_region_create);
-
-/**
- * devlink_port_region_create - create a new address region for a port
- *
- * @port: devlink port
- * @ops: region operations and name
- * @region_max_snapshots: Maximum supported number of snapshots for region
- * @region_size: size of region
- *
- * Context: Takes and release devlink->lock <mutex>.
- */
-struct devlink_region *
-devlink_port_region_create(struct devlink_port *port,
- const struct devlink_port_region_ops *ops,
- u32 region_max_snapshots, u64 region_size)
-{
- struct devlink *devlink = port->devlink;
- struct devlink_region *region;
- int err = 0;
-
- ASSERT_DEVLINK_PORT_INITIALIZED(port);
-
- if (WARN_ON(!ops) || WARN_ON(!ops->destructor))
- return ERR_PTR(-EINVAL);
-
- devl_lock(devlink);
-
- if (devlink_port_region_get_by_name(port, ops->name)) {
- err = -EEXIST;
- goto unlock;
- }
-
- region = kzalloc(sizeof(*region), GFP_KERNEL);
- if (!region) {
- err = -ENOMEM;
- goto unlock;
- }
-
- region->devlink = devlink;
- region->port = port;
- region->max_snapshots = region_max_snapshots;
- region->port_ops = ops;
- region->size = region_size;
- INIT_LIST_HEAD(&region->snapshot_list);
- mutex_init(&region->snapshot_lock);
- list_add_tail(&region->list, &port->region_list);
- devlink_nl_region_notify(region, NULL, DEVLINK_CMD_REGION_NEW);
-
- devl_unlock(devlink);
- return region;
-
-unlock:
- devl_unlock(devlink);
- return ERR_PTR(err);
-}
-EXPORT_SYMBOL_GPL(devlink_port_region_create);
-
-/**
- * devl_region_destroy - destroy address region
- *
- * @region: devlink region to destroy
- */
-void devl_region_destroy(struct devlink_region *region)
-{
- struct devlink *devlink = region->devlink;
- struct devlink_snapshot *snapshot, *ts;
-
- devl_assert_locked(devlink);
-
- /* Free all snapshots of region */
- mutex_lock(&region->snapshot_lock);
- list_for_each_entry_safe(snapshot, ts, &region->snapshot_list, list)
- devlink_region_snapshot_del(region, snapshot);
- mutex_unlock(&region->snapshot_lock);
-
- list_del(&region->list);
- mutex_destroy(&region->snapshot_lock);
-
- devlink_nl_region_notify(region, NULL, DEVLINK_CMD_REGION_DEL);
- kfree(region);
-}
-EXPORT_SYMBOL_GPL(devl_region_destroy);
-
-/**
- * devlink_region_destroy - destroy address region
- *
- * @region: devlink region to destroy
- *
- * Context: Takes and release devlink->lock <mutex>.
- */
-void devlink_region_destroy(struct devlink_region *region)
-{
- struct devlink *devlink = region->devlink;
-
- devl_lock(devlink);
- devl_region_destroy(region);
- devl_unlock(devlink);
-}
-EXPORT_SYMBOL_GPL(devlink_region_destroy);
-
-/**
- * devlink_region_snapshot_id_get - get snapshot ID
- *
- * This callback should be called when adding a new snapshot,
- * Driver should use the same id for multiple snapshots taken
- * on multiple regions at the same time/by the same trigger.
- *
- * The caller of this function must use devlink_region_snapshot_id_put
- * when finished creating regions using this id.
- *
- * Returns zero on success, or a negative error code on failure.
- *
- * @devlink: devlink
- * @id: storage to return id
- */
-int devlink_region_snapshot_id_get(struct devlink *devlink, u32 *id)
-{
- return __devlink_region_snapshot_id_get(devlink, id);
-}
-EXPORT_SYMBOL_GPL(devlink_region_snapshot_id_get);
-
-/**
- * devlink_region_snapshot_id_put - put snapshot ID reference
- *
- * This should be called by a driver after finishing creating snapshots
- * with an id. Doing so ensures that the ID can later be released in the
- * event that all snapshots using it have been destroyed.
- *
- * @devlink: devlink
- * @id: id to release reference on
- */
-void devlink_region_snapshot_id_put(struct devlink *devlink, u32 id)
-{
- __devlink_snapshot_id_decrement(devlink, id);
-}
-EXPORT_SYMBOL_GPL(devlink_region_snapshot_id_put);
-
-/**
- * devlink_region_snapshot_create - create a new snapshot
- * This will add a new snapshot of a region. The snapshot
- * will be stored on the region struct and can be accessed
- * from devlink. This is useful for future analyses of snapshots.
- * Multiple snapshots can be created on a region.
- * The @snapshot_id should be obtained using the getter function.
- *
- * @region: devlink region of the snapshot
- * @data: snapshot data
- * @snapshot_id: snapshot id to be created
- */
-int devlink_region_snapshot_create(struct devlink_region *region,
- u8 *data, u32 snapshot_id)
-{
- int err;
-
- mutex_lock(&region->snapshot_lock);
- err = __devlink_region_snapshot_create(region, data, snapshot_id);
- mutex_unlock(&region->snapshot_lock);
- return err;
-}
-EXPORT_SYMBOL_GPL(devlink_region_snapshot_create);
-
-#define DEVLINK_TRAP(_id, _type) \
- { \
- .type = DEVLINK_TRAP_TYPE_##_type, \
- .id = DEVLINK_TRAP_GENERIC_ID_##_id, \
- .name = DEVLINK_TRAP_GENERIC_NAME_##_id, \
- }
-
-static const struct devlink_trap devlink_trap_generic[] = {
- DEVLINK_TRAP(SMAC_MC, DROP),
- DEVLINK_TRAP(VLAN_TAG_MISMATCH, DROP),
- DEVLINK_TRAP(INGRESS_VLAN_FILTER, DROP),
- DEVLINK_TRAP(INGRESS_STP_FILTER, DROP),
- DEVLINK_TRAP(EMPTY_TX_LIST, DROP),
- DEVLINK_TRAP(PORT_LOOPBACK_FILTER, DROP),
- DEVLINK_TRAP(BLACKHOLE_ROUTE, DROP),
- DEVLINK_TRAP(TTL_ERROR, EXCEPTION),
- DEVLINK_TRAP(TAIL_DROP, DROP),
- DEVLINK_TRAP(NON_IP_PACKET, DROP),
- DEVLINK_TRAP(UC_DIP_MC_DMAC, DROP),
- DEVLINK_TRAP(DIP_LB, DROP),
- DEVLINK_TRAP(SIP_MC, DROP),
- DEVLINK_TRAP(SIP_LB, DROP),
- DEVLINK_TRAP(CORRUPTED_IP_HDR, DROP),
- DEVLINK_TRAP(IPV4_SIP_BC, DROP),
- DEVLINK_TRAP(IPV6_MC_DIP_RESERVED_SCOPE, DROP),
- DEVLINK_TRAP(IPV6_MC_DIP_INTERFACE_LOCAL_SCOPE, DROP),
- DEVLINK_TRAP(MTU_ERROR, EXCEPTION),
- DEVLINK_TRAP(UNRESOLVED_NEIGH, EXCEPTION),
- DEVLINK_TRAP(RPF, EXCEPTION),
- DEVLINK_TRAP(REJECT_ROUTE, EXCEPTION),
- DEVLINK_TRAP(IPV4_LPM_UNICAST_MISS, EXCEPTION),
- DEVLINK_TRAP(IPV6_LPM_UNICAST_MISS, EXCEPTION),
- DEVLINK_TRAP(NON_ROUTABLE, DROP),
- DEVLINK_TRAP(DECAP_ERROR, EXCEPTION),
- DEVLINK_TRAP(OVERLAY_SMAC_MC, DROP),
- DEVLINK_TRAP(INGRESS_FLOW_ACTION_DROP, DROP),
- DEVLINK_TRAP(EGRESS_FLOW_ACTION_DROP, DROP),
- DEVLINK_TRAP(STP, CONTROL),
- DEVLINK_TRAP(LACP, CONTROL),
- DEVLINK_TRAP(LLDP, CONTROL),
- DEVLINK_TRAP(IGMP_QUERY, CONTROL),
- DEVLINK_TRAP(IGMP_V1_REPORT, CONTROL),
- DEVLINK_TRAP(IGMP_V2_REPORT, CONTROL),
- DEVLINK_TRAP(IGMP_V3_REPORT, CONTROL),
- DEVLINK_TRAP(IGMP_V2_LEAVE, CONTROL),
- DEVLINK_TRAP(MLD_QUERY, CONTROL),
- DEVLINK_TRAP(MLD_V1_REPORT, CONTROL),
- DEVLINK_TRAP(MLD_V2_REPORT, CONTROL),
- DEVLINK_TRAP(MLD_V1_DONE, CONTROL),
- DEVLINK_TRAP(IPV4_DHCP, CONTROL),
- DEVLINK_TRAP(IPV6_DHCP, CONTROL),
- DEVLINK_TRAP(ARP_REQUEST, CONTROL),
- DEVLINK_TRAP(ARP_RESPONSE, CONTROL),
- DEVLINK_TRAP(ARP_OVERLAY, CONTROL),
- DEVLINK_TRAP(IPV6_NEIGH_SOLICIT, CONTROL),
- DEVLINK_TRAP(IPV6_NEIGH_ADVERT, CONTROL),
- DEVLINK_TRAP(IPV4_BFD, CONTROL),
- DEVLINK_TRAP(IPV6_BFD, CONTROL),
- DEVLINK_TRAP(IPV4_OSPF, CONTROL),
- DEVLINK_TRAP(IPV6_OSPF, CONTROL),
- DEVLINK_TRAP(IPV4_BGP, CONTROL),
- DEVLINK_TRAP(IPV6_BGP, CONTROL),
- DEVLINK_TRAP(IPV4_VRRP, CONTROL),
- DEVLINK_TRAP(IPV6_VRRP, CONTROL),
- DEVLINK_TRAP(IPV4_PIM, CONTROL),
- DEVLINK_TRAP(IPV6_PIM, CONTROL),
- DEVLINK_TRAP(UC_LB, CONTROL),
- DEVLINK_TRAP(LOCAL_ROUTE, CONTROL),
- DEVLINK_TRAP(EXTERNAL_ROUTE, CONTROL),
- DEVLINK_TRAP(IPV6_UC_DIP_LINK_LOCAL_SCOPE, CONTROL),
- DEVLINK_TRAP(IPV6_DIP_ALL_NODES, CONTROL),
- DEVLINK_TRAP(IPV6_DIP_ALL_ROUTERS, CONTROL),
- DEVLINK_TRAP(IPV6_ROUTER_SOLICIT, CONTROL),
- DEVLINK_TRAP(IPV6_ROUTER_ADVERT, CONTROL),
- DEVLINK_TRAP(IPV6_REDIRECT, CONTROL),
- DEVLINK_TRAP(IPV4_ROUTER_ALERT, CONTROL),
- DEVLINK_TRAP(IPV6_ROUTER_ALERT, CONTROL),
- DEVLINK_TRAP(PTP_EVENT, CONTROL),
- DEVLINK_TRAP(PTP_GENERAL, CONTROL),
- DEVLINK_TRAP(FLOW_ACTION_SAMPLE, CONTROL),
- DEVLINK_TRAP(FLOW_ACTION_TRAP, CONTROL),
- DEVLINK_TRAP(EARLY_DROP, DROP),
- DEVLINK_TRAP(VXLAN_PARSING, DROP),
- DEVLINK_TRAP(LLC_SNAP_PARSING, DROP),
- DEVLINK_TRAP(VLAN_PARSING, DROP),
- DEVLINK_TRAP(PPPOE_PPP_PARSING, DROP),
- DEVLINK_TRAP(MPLS_PARSING, DROP),
- DEVLINK_TRAP(ARP_PARSING, DROP),
- DEVLINK_TRAP(IP_1_PARSING, DROP),
- DEVLINK_TRAP(IP_N_PARSING, DROP),
- DEVLINK_TRAP(GRE_PARSING, DROP),
- DEVLINK_TRAP(UDP_PARSING, DROP),
- DEVLINK_TRAP(TCP_PARSING, DROP),
- DEVLINK_TRAP(IPSEC_PARSING, DROP),
- DEVLINK_TRAP(SCTP_PARSING, DROP),
- DEVLINK_TRAP(DCCP_PARSING, DROP),
- DEVLINK_TRAP(GTP_PARSING, DROP),
- DEVLINK_TRAP(ESP_PARSING, DROP),
- DEVLINK_TRAP(BLACKHOLE_NEXTHOP, DROP),
- DEVLINK_TRAP(DMAC_FILTER, DROP),
-};
-
-#define DEVLINK_TRAP_GROUP(_id) \
- { \
- .id = DEVLINK_TRAP_GROUP_GENERIC_ID_##_id, \
- .name = DEVLINK_TRAP_GROUP_GENERIC_NAME_##_id, \
- }
-
-static const struct devlink_trap_group devlink_trap_group_generic[] = {
- DEVLINK_TRAP_GROUP(L2_DROPS),
- DEVLINK_TRAP_GROUP(L3_DROPS),
- DEVLINK_TRAP_GROUP(L3_EXCEPTIONS),
- DEVLINK_TRAP_GROUP(BUFFER_DROPS),
- DEVLINK_TRAP_GROUP(TUNNEL_DROPS),
- DEVLINK_TRAP_GROUP(ACL_DROPS),
- DEVLINK_TRAP_GROUP(STP),
- DEVLINK_TRAP_GROUP(LACP),
- DEVLINK_TRAP_GROUP(LLDP),
- DEVLINK_TRAP_GROUP(MC_SNOOPING),
- DEVLINK_TRAP_GROUP(DHCP),
- DEVLINK_TRAP_GROUP(NEIGH_DISCOVERY),
- DEVLINK_TRAP_GROUP(BFD),
- DEVLINK_TRAP_GROUP(OSPF),
- DEVLINK_TRAP_GROUP(BGP),
- DEVLINK_TRAP_GROUP(VRRP),
- DEVLINK_TRAP_GROUP(PIM),
- DEVLINK_TRAP_GROUP(UC_LB),
- DEVLINK_TRAP_GROUP(LOCAL_DELIVERY),
- DEVLINK_TRAP_GROUP(EXTERNAL_DELIVERY),
- DEVLINK_TRAP_GROUP(IPV6),
- DEVLINK_TRAP_GROUP(PTP_EVENT),
- DEVLINK_TRAP_GROUP(PTP_GENERAL),
- DEVLINK_TRAP_GROUP(ACL_SAMPLE),
- DEVLINK_TRAP_GROUP(ACL_TRAP),
- DEVLINK_TRAP_GROUP(PARSER_ERROR_DROPS),
-};
-
-static int devlink_trap_generic_verify(const struct devlink_trap *trap)
-{
- if (trap->id > DEVLINK_TRAP_GENERIC_ID_MAX)
- return -EINVAL;
-
- if (strcmp(trap->name, devlink_trap_generic[trap->id].name))
- return -EINVAL;
-
- if (trap->type != devlink_trap_generic[trap->id].type)
- return -EINVAL;
-
- return 0;
-}
-
-static int devlink_trap_driver_verify(const struct devlink_trap *trap)
-{
- int i;
-
- if (trap->id <= DEVLINK_TRAP_GENERIC_ID_MAX)
- return -EINVAL;
-
- for (i = 0; i < ARRAY_SIZE(devlink_trap_generic); i++) {
- if (!strcmp(trap->name, devlink_trap_generic[i].name))
- return -EEXIST;
- }
-
- return 0;
-}
-
-static int devlink_trap_verify(const struct devlink_trap *trap)
-{
- if (!trap || !trap->name)
- return -EINVAL;
-
- if (trap->generic)
- return devlink_trap_generic_verify(trap);
- else
- return devlink_trap_driver_verify(trap);
-}
-
-static int
-devlink_trap_group_generic_verify(const struct devlink_trap_group *group)
-{
- if (group->id > DEVLINK_TRAP_GROUP_GENERIC_ID_MAX)
- return -EINVAL;
-
- if (strcmp(group->name, devlink_trap_group_generic[group->id].name))
- return -EINVAL;
-
- return 0;
-}
-
-static int
-devlink_trap_group_driver_verify(const struct devlink_trap_group *group)
-{
- int i;
-
- if (group->id <= DEVLINK_TRAP_GROUP_GENERIC_ID_MAX)
- return -EINVAL;
-
- for (i = 0; i < ARRAY_SIZE(devlink_trap_group_generic); i++) {
- if (!strcmp(group->name, devlink_trap_group_generic[i].name))
- return -EEXIST;
- }
-
- return 0;
-}
-
-static int devlink_trap_group_verify(const struct devlink_trap_group *group)
-{
- if (group->generic)
- return devlink_trap_group_generic_verify(group);
- else
- return devlink_trap_group_driver_verify(group);
-}
-
-static void
-devlink_trap_group_notify(struct devlink *devlink,
- const struct devlink_trap_group_item *group_item,
- enum devlink_command cmd)
-{
- struct sk_buff *msg;
- int err;
-
- WARN_ON_ONCE(cmd != DEVLINK_CMD_TRAP_GROUP_NEW &&
- cmd != DEVLINK_CMD_TRAP_GROUP_DEL);
- if (!xa_get_mark(&devlinks, devlink->index, DEVLINK_REGISTERED))
- return;
-
- msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
- if (!msg)
- return;
-
- err = devlink_nl_trap_group_fill(msg, devlink, group_item, cmd, 0, 0,
- 0);
- if (err) {
- nlmsg_free(msg);
- return;
- }
-
- genlmsg_multicast_netns(&devlink_nl_family, devlink_net(devlink),
- msg, 0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL);
-}
-
-static int
-devlink_trap_item_group_link(struct devlink *devlink,
- struct devlink_trap_item *trap_item)
-{
- u16 group_id = trap_item->trap->init_group_id;
- struct devlink_trap_group_item *group_item;
-
- group_item = devlink_trap_group_item_lookup_by_id(devlink, group_id);
- if (WARN_ON_ONCE(!group_item))
- return -EINVAL;
-
- trap_item->group_item = group_item;
-
- return 0;
-}
-
-static void devlink_trap_notify(struct devlink *devlink,
- const struct devlink_trap_item *trap_item,
- enum devlink_command cmd)
-{
- struct sk_buff *msg;
- int err;
-
- WARN_ON_ONCE(cmd != DEVLINK_CMD_TRAP_NEW &&
- cmd != DEVLINK_CMD_TRAP_DEL);
- if (!xa_get_mark(&devlinks, devlink->index, DEVLINK_REGISTERED))
- return;
-
- msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
- if (!msg)
- return;
-
- err = devlink_nl_trap_fill(msg, devlink, trap_item, cmd, 0, 0, 0);
- if (err) {
- nlmsg_free(msg);
- return;
- }
-
- genlmsg_multicast_netns(&devlink_nl_family, devlink_net(devlink),
- msg, 0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL);
-}
-
-static int
-devlink_trap_register(struct devlink *devlink,
- const struct devlink_trap *trap, void *priv)
-{
- struct devlink_trap_item *trap_item;
- int err;
-
- if (devlink_trap_item_lookup(devlink, trap->name))
- return -EEXIST;
-
- trap_item = kzalloc(sizeof(*trap_item), GFP_KERNEL);
- if (!trap_item)
- return -ENOMEM;
-
- trap_item->stats = netdev_alloc_pcpu_stats(struct devlink_stats);
- if (!trap_item->stats) {
- err = -ENOMEM;
- goto err_stats_alloc;
- }
-
- trap_item->trap = trap;
- trap_item->action = trap->init_action;
- trap_item->priv = priv;
-
- err = devlink_trap_item_group_link(devlink, trap_item);
- if (err)
- goto err_group_link;
-
- err = devlink->ops->trap_init(devlink, trap, trap_item);
- if (err)
- goto err_trap_init;
-
- list_add_tail(&trap_item->list, &devlink->trap_list);
- devlink_trap_notify(devlink, trap_item, DEVLINK_CMD_TRAP_NEW);
-
- return 0;
-
-err_trap_init:
-err_group_link:
- free_percpu(trap_item->stats);
-err_stats_alloc:
- kfree(trap_item);
- return err;
-}
-
-static void devlink_trap_unregister(struct devlink *devlink,
- const struct devlink_trap *trap)
-{
- struct devlink_trap_item *trap_item;
-
- trap_item = devlink_trap_item_lookup(devlink, trap->name);
- if (WARN_ON_ONCE(!trap_item))
- return;
-
- devlink_trap_notify(devlink, trap_item, DEVLINK_CMD_TRAP_DEL);
- list_del(&trap_item->list);
- if (devlink->ops->trap_fini)
- devlink->ops->trap_fini(devlink, trap, trap_item);
- free_percpu(trap_item->stats);
- kfree(trap_item);
-}
-
-static void devlink_trap_disable(struct devlink *devlink,
- const struct devlink_trap *trap)
-{
- struct devlink_trap_item *trap_item;
-
- trap_item = devlink_trap_item_lookup(devlink, trap->name);
- if (WARN_ON_ONCE(!trap_item))
- return;
-
- devlink->ops->trap_action_set(devlink, trap, DEVLINK_TRAP_ACTION_DROP,
- NULL);
- trap_item->action = DEVLINK_TRAP_ACTION_DROP;
-}
-
-/**
- * devl_traps_register - Register packet traps with devlink.
- * @devlink: devlink.
- * @traps: Packet traps.
- * @traps_count: Count of provided packet traps.
- * @priv: Driver private information.
- *
- * Return: Non-zero value on failure.
- */
-int devl_traps_register(struct devlink *devlink,
- const struct devlink_trap *traps,
- size_t traps_count, void *priv)
-{
- int i, err;
-
- if (!devlink->ops->trap_init || !devlink->ops->trap_action_set)
- return -EINVAL;
-
- devl_assert_locked(devlink);
- for (i = 0; i < traps_count; i++) {
- const struct devlink_trap *trap = &traps[i];
-
- err = devlink_trap_verify(trap);
- if (err)
- goto err_trap_verify;
-
- err = devlink_trap_register(devlink, trap, priv);
- if (err)
- goto err_trap_register;
- }
-
- return 0;
-
-err_trap_register:
-err_trap_verify:
- for (i--; i >= 0; i--)
- devlink_trap_unregister(devlink, &traps[i]);
- return err;
-}
-EXPORT_SYMBOL_GPL(devl_traps_register);
-
-/**
- * devlink_traps_register - Register packet traps with devlink.
- * @devlink: devlink.
- * @traps: Packet traps.
- * @traps_count: Count of provided packet traps.
- * @priv: Driver private information.
- *
- * Context: Takes and release devlink->lock <mutex>.
- *
- * Return: Non-zero value on failure.
- */
-int devlink_traps_register(struct devlink *devlink,
- const struct devlink_trap *traps,
- size_t traps_count, void *priv)
-{
- int err;
-
- devl_lock(devlink);
- err = devl_traps_register(devlink, traps, traps_count, priv);
- devl_unlock(devlink);
- return err;
-}
-EXPORT_SYMBOL_GPL(devlink_traps_register);
-
-/**
- * devl_traps_unregister - Unregister packet traps from devlink.
- * @devlink: devlink.
- * @traps: Packet traps.
- * @traps_count: Count of provided packet traps.
- */
-void devl_traps_unregister(struct devlink *devlink,
- const struct devlink_trap *traps,
- size_t traps_count)
-{
- int i;
-
- devl_assert_locked(devlink);
- /* Make sure we do not have any packets in-flight while unregistering
- * traps by disabling all of them and waiting for a grace period.
- */
- for (i = traps_count - 1; i >= 0; i--)
- devlink_trap_disable(devlink, &traps[i]);
- synchronize_rcu();
- for (i = traps_count - 1; i >= 0; i--)
- devlink_trap_unregister(devlink, &traps[i]);
-}
-EXPORT_SYMBOL_GPL(devl_traps_unregister);
-
-/**
- * devlink_traps_unregister - Unregister packet traps from devlink.
- * @devlink: devlink.
- * @traps: Packet traps.
- * @traps_count: Count of provided packet traps.
- *
- * Context: Takes and release devlink->lock <mutex>.
- */
-void devlink_traps_unregister(struct devlink *devlink,
- const struct devlink_trap *traps,
- size_t traps_count)
-{
- devl_lock(devlink);
- devl_traps_unregister(devlink, traps, traps_count);
- devl_unlock(devlink);
-}
-EXPORT_SYMBOL_GPL(devlink_traps_unregister);
-
-static void
-devlink_trap_stats_update(struct devlink_stats __percpu *trap_stats,
- size_t skb_len)
-{
- struct devlink_stats *stats;
-
- stats = this_cpu_ptr(trap_stats);
- u64_stats_update_begin(&stats->syncp);
- u64_stats_add(&stats->rx_bytes, skb_len);
- u64_stats_inc(&stats->rx_packets);
- u64_stats_update_end(&stats->syncp);
-}
-
-static void
-devlink_trap_report_metadata_set(struct devlink_trap_metadata *metadata,
- const struct devlink_trap_item *trap_item,
- struct devlink_port *in_devlink_port,
- const struct flow_action_cookie *fa_cookie)
-{
- metadata->trap_name = trap_item->trap->name;
- metadata->trap_group_name = trap_item->group_item->group->name;
- metadata->fa_cookie = fa_cookie;
- metadata->trap_type = trap_item->trap->type;
-
- spin_lock(&in_devlink_port->type_lock);
- if (in_devlink_port->type == DEVLINK_PORT_TYPE_ETH)
- metadata->input_dev = in_devlink_port->type_dev;
- spin_unlock(&in_devlink_port->type_lock);
-}
-
-/**
- * devlink_trap_report - Report trapped packet to drop monitor.
- * @devlink: devlink.
- * @skb: Trapped packet.
- * @trap_ctx: Trap context.
- * @in_devlink_port: Input devlink port.
- * @fa_cookie: Flow action cookie. Could be NULL.
- */
-void devlink_trap_report(struct devlink *devlink, struct sk_buff *skb,
- void *trap_ctx, struct devlink_port *in_devlink_port,
- const struct flow_action_cookie *fa_cookie)
-
-{
- struct devlink_trap_item *trap_item = trap_ctx;
-
- devlink_trap_stats_update(trap_item->stats, skb->len);
- devlink_trap_stats_update(trap_item->group_item->stats, skb->len);
-
- if (trace_devlink_trap_report_enabled()) {
- struct devlink_trap_metadata metadata = {};
-
- devlink_trap_report_metadata_set(&metadata, trap_item,
- in_devlink_port, fa_cookie);
- trace_devlink_trap_report(devlink, skb, &metadata);
- }
-}
-EXPORT_SYMBOL_GPL(devlink_trap_report);
-
-/**
- * devlink_trap_ctx_priv - Trap context to driver private information.
- * @trap_ctx: Trap context.
- *
- * Return: Driver private information passed during registration.
- */
-void *devlink_trap_ctx_priv(void *trap_ctx)
-{
- struct devlink_trap_item *trap_item = trap_ctx;
-
- return trap_item->priv;
-}
-EXPORT_SYMBOL_GPL(devlink_trap_ctx_priv);
-
-static int
-devlink_trap_group_item_policer_link(struct devlink *devlink,
- struct devlink_trap_group_item *group_item)
-{
- u32 policer_id = group_item->group->init_policer_id;
- struct devlink_trap_policer_item *policer_item;
-
- if (policer_id == 0)
- return 0;
-
- policer_item = devlink_trap_policer_item_lookup(devlink, policer_id);
- if (WARN_ON_ONCE(!policer_item))
- return -EINVAL;
-
- group_item->policer_item = policer_item;
-
- return 0;
-}
-
-static int
-devlink_trap_group_register(struct devlink *devlink,
- const struct devlink_trap_group *group)
-{
- struct devlink_trap_group_item *group_item;
- int err;
-
- if (devlink_trap_group_item_lookup(devlink, group->name))
- return -EEXIST;
-
- group_item = kzalloc(sizeof(*group_item), GFP_KERNEL);
- if (!group_item)
- return -ENOMEM;
-
- group_item->stats = netdev_alloc_pcpu_stats(struct devlink_stats);
- if (!group_item->stats) {
- err = -ENOMEM;
- goto err_stats_alloc;
- }
-
- group_item->group = group;
-
- err = devlink_trap_group_item_policer_link(devlink, group_item);
- if (err)
- goto err_policer_link;
-
- if (devlink->ops->trap_group_init) {
- err = devlink->ops->trap_group_init(devlink, group);
- if (err)
- goto err_group_init;
- }
-
- list_add_tail(&group_item->list, &devlink->trap_group_list);
- devlink_trap_group_notify(devlink, group_item,
- DEVLINK_CMD_TRAP_GROUP_NEW);
-
- return 0;
-
-err_group_init:
-err_policer_link:
- free_percpu(group_item->stats);
-err_stats_alloc:
- kfree(group_item);
- return err;
-}
-
-static void
-devlink_trap_group_unregister(struct devlink *devlink,
- const struct devlink_trap_group *group)
-{
- struct devlink_trap_group_item *group_item;
-
- group_item = devlink_trap_group_item_lookup(devlink, group->name);
- if (WARN_ON_ONCE(!group_item))
- return;
-
- devlink_trap_group_notify(devlink, group_item,
- DEVLINK_CMD_TRAP_GROUP_DEL);
- list_del(&group_item->list);
- free_percpu(group_item->stats);
- kfree(group_item);
-}
-
-/**
- * devl_trap_groups_register - Register packet trap groups with devlink.
- * @devlink: devlink.
- * @groups: Packet trap groups.
- * @groups_count: Count of provided packet trap groups.
- *
- * Return: Non-zero value on failure.
- */
-int devl_trap_groups_register(struct devlink *devlink,
- const struct devlink_trap_group *groups,
- size_t groups_count)
-{
- int i, err;
-
- devl_assert_locked(devlink);
- for (i = 0; i < groups_count; i++) {
- const struct devlink_trap_group *group = &groups[i];
-
- err = devlink_trap_group_verify(group);
- if (err)
- goto err_trap_group_verify;
-
- err = devlink_trap_group_register(devlink, group);
- if (err)
- goto err_trap_group_register;
- }
-
- return 0;
-
-err_trap_group_register:
-err_trap_group_verify:
- for (i--; i >= 0; i--)
- devlink_trap_group_unregister(devlink, &groups[i]);
- return err;
-}
-EXPORT_SYMBOL_GPL(devl_trap_groups_register);
-
-/**
- * devlink_trap_groups_register - Register packet trap groups with devlink.
- * @devlink: devlink.
- * @groups: Packet trap groups.
- * @groups_count: Count of provided packet trap groups.
- *
- * Context: Takes and release devlink->lock <mutex>.
- *
- * Return: Non-zero value on failure.
- */
-int devlink_trap_groups_register(struct devlink *devlink,
- const struct devlink_trap_group *groups,
- size_t groups_count)
-{
- int err;
-
- devl_lock(devlink);
- err = devl_trap_groups_register(devlink, groups, groups_count);
- devl_unlock(devlink);
- return err;
-}
-EXPORT_SYMBOL_GPL(devlink_trap_groups_register);
-
-/**
- * devl_trap_groups_unregister - Unregister packet trap groups from devlink.
- * @devlink: devlink.
- * @groups: Packet trap groups.
- * @groups_count: Count of provided packet trap groups.
- */
-void devl_trap_groups_unregister(struct devlink *devlink,
- const struct devlink_trap_group *groups,
- size_t groups_count)
-{
- int i;
-
- devl_assert_locked(devlink);
- for (i = groups_count - 1; i >= 0; i--)
- devlink_trap_group_unregister(devlink, &groups[i]);
-}
-EXPORT_SYMBOL_GPL(devl_trap_groups_unregister);
-
-/**
- * devlink_trap_groups_unregister - Unregister packet trap groups from devlink.
- * @devlink: devlink.
- * @groups: Packet trap groups.
- * @groups_count: Count of provided packet trap groups.
- *
- * Context: Takes and release devlink->lock <mutex>.
- */
-void devlink_trap_groups_unregister(struct devlink *devlink,
- const struct devlink_trap_group *groups,
- size_t groups_count)
-{
- devl_lock(devlink);
- devl_trap_groups_unregister(devlink, groups, groups_count);
- devl_unlock(devlink);
-}
-EXPORT_SYMBOL_GPL(devlink_trap_groups_unregister);
-
-static void
-devlink_trap_policer_notify(struct devlink *devlink,
- const struct devlink_trap_policer_item *policer_item,
- enum devlink_command cmd)
-{
- struct sk_buff *msg;
- int err;
-
- WARN_ON_ONCE(cmd != DEVLINK_CMD_TRAP_POLICER_NEW &&
- cmd != DEVLINK_CMD_TRAP_POLICER_DEL);
- if (!xa_get_mark(&devlinks, devlink->index, DEVLINK_REGISTERED))
- return;
-
- msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
- if (!msg)
- return;
-
- err = devlink_nl_trap_policer_fill(msg, devlink, policer_item, cmd, 0,
- 0, 0);
- if (err) {
- nlmsg_free(msg);
- return;
- }
-
- genlmsg_multicast_netns(&devlink_nl_family, devlink_net(devlink),
- msg, 0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL);
-}
-
-static int
-devlink_trap_policer_register(struct devlink *devlink,
- const struct devlink_trap_policer *policer)
-{
- struct devlink_trap_policer_item *policer_item;
- int err;
-
- if (devlink_trap_policer_item_lookup(devlink, policer->id))
- return -EEXIST;
-
- policer_item = kzalloc(sizeof(*policer_item), GFP_KERNEL);
- if (!policer_item)
- return -ENOMEM;
-
- policer_item->policer = policer;
- policer_item->rate = policer->init_rate;
- policer_item->burst = policer->init_burst;
-
- if (devlink->ops->trap_policer_init) {
- err = devlink->ops->trap_policer_init(devlink, policer);
- if (err)
- goto err_policer_init;
- }
-
- list_add_tail(&policer_item->list, &devlink->trap_policer_list);
- devlink_trap_policer_notify(devlink, policer_item,
- DEVLINK_CMD_TRAP_POLICER_NEW);
-
- return 0;
-
-err_policer_init:
- kfree(policer_item);
- return err;
-}
-
-static void
-devlink_trap_policer_unregister(struct devlink *devlink,
- const struct devlink_trap_policer *policer)
-{
- struct devlink_trap_policer_item *policer_item;
-
- policer_item = devlink_trap_policer_item_lookup(devlink, policer->id);
- if (WARN_ON_ONCE(!policer_item))
- return;
-
- devlink_trap_policer_notify(devlink, policer_item,
- DEVLINK_CMD_TRAP_POLICER_DEL);
- list_del(&policer_item->list);
- if (devlink->ops->trap_policer_fini)
- devlink->ops->trap_policer_fini(devlink, policer);
- kfree(policer_item);
-}
-
-/**
- * devl_trap_policers_register - Register packet trap policers with devlink.
- * @devlink: devlink.
- * @policers: Packet trap policers.
- * @policers_count: Count of provided packet trap policers.
- *
- * Return: Non-zero value on failure.
- */
-int
-devl_trap_policers_register(struct devlink *devlink,
- const struct devlink_trap_policer *policers,
- size_t policers_count)
-{
- int i, err;
-
- devl_assert_locked(devlink);
- for (i = 0; i < policers_count; i++) {
- const struct devlink_trap_policer *policer = &policers[i];
-
- if (WARN_ON(policer->id == 0 ||
- policer->max_rate < policer->min_rate ||
- policer->max_burst < policer->min_burst)) {
- err = -EINVAL;
- goto err_trap_policer_verify;
- }
-
- err = devlink_trap_policer_register(devlink, policer);
- if (err)
- goto err_trap_policer_register;
- }
- return 0;
-
-err_trap_policer_register:
-err_trap_policer_verify:
- for (i--; i >= 0; i--)
- devlink_trap_policer_unregister(devlink, &policers[i]);
- return err;
-}
-EXPORT_SYMBOL_GPL(devl_trap_policers_register);
-
-/**
- * devl_trap_policers_unregister - Unregister packet trap policers from devlink.
- * @devlink: devlink.
- * @policers: Packet trap policers.
- * @policers_count: Count of provided packet trap policers.
- */
-void
-devl_trap_policers_unregister(struct devlink *devlink,
- const struct devlink_trap_policer *policers,
- size_t policers_count)
-{
- int i;
-
- devl_assert_locked(devlink);
- for (i = policers_count - 1; i >= 0; i--)
- devlink_trap_policer_unregister(devlink, &policers[i]);
-}
-EXPORT_SYMBOL_GPL(devl_trap_policers_unregister);
-
-static void __devlink_compat_running_version(struct devlink *devlink,
- char *buf, size_t len)
-{
- struct devlink_info_req req = {};
- const struct nlattr *nlattr;
- struct sk_buff *msg;
- int rem, err;
-
- msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
- if (!msg)
- return;
-
- req.msg = msg;
- err = devlink->ops->info_get(devlink, &req, NULL);
- if (err)
- goto free_msg;
-
- nla_for_each_attr(nlattr, (void *)msg->data, msg->len, rem) {
- const struct nlattr *kv;
- int rem_kv;
-
- if (nla_type(nlattr) != DEVLINK_ATTR_INFO_VERSION_RUNNING)
- continue;
-
- nla_for_each_nested(kv, nlattr, rem_kv) {
- if (nla_type(kv) != DEVLINK_ATTR_INFO_VERSION_VALUE)
- continue;
-
- strlcat(buf, nla_data(kv), len);
- strlcat(buf, " ", len);
- }
- }
-free_msg:
- nlmsg_free(msg);
-}
-
-static struct devlink_port *netdev_to_devlink_port(struct net_device *dev)
-{
- if (!dev->netdev_ops->ndo_get_devlink_port)
- return NULL;
-
- return dev->netdev_ops->ndo_get_devlink_port(dev);
-}
-
-void devlink_compat_running_version(struct devlink *devlink,
- char *buf, size_t len)
-{
- if (!devlink->ops->info_get)
- return;
-
- devl_lock(devlink);
- __devlink_compat_running_version(devlink, buf, len);
- devl_unlock(devlink);
-}
-
-int devlink_compat_flash_update(struct devlink *devlink, const char *file_name)
-{
- struct devlink_flash_update_params params = {};
- int ret;
-
- if (!devlink->ops->flash_update)
- return -EOPNOTSUPP;
-
- ret = request_firmware(&params.fw, file_name, devlink->dev);
- if (ret)
- return ret;
-
- devl_lock(devlink);
- devlink_flash_update_begin_notify(devlink);
- ret = devlink->ops->flash_update(devlink, &params, NULL);
- devlink_flash_update_end_notify(devlink);
- devl_unlock(devlink);
-
- release_firmware(params.fw);
-
- return ret;
-}
-
-int devlink_compat_phys_port_name_get(struct net_device *dev,
- char *name, size_t len)
-{
- struct devlink_port *devlink_port;
-
- /* RTNL mutex is held here which ensures that devlink_port
- * instance cannot disappear in the middle. No need to take
- * any devlink lock as only permanent values are accessed.
- */
- ASSERT_RTNL();
-
- devlink_port = netdev_to_devlink_port(dev);
- if (!devlink_port)
- return -EOPNOTSUPP;
-
- return __devlink_port_phys_port_name_get(devlink_port, name, len);
-}
-
-int devlink_compat_switch_id_get(struct net_device *dev,
- struct netdev_phys_item_id *ppid)
-{
- struct devlink_port *devlink_port;
-
- /* Caller must hold RTNL mutex or reference to dev, which ensures that
- * devlink_port instance cannot disappear in the middle. No need to take
- * any devlink lock as only permanent values are accessed.
- */
- devlink_port = netdev_to_devlink_port(dev);
- if (!devlink_port || !devlink_port->switch_port)
- return -EOPNOTSUPP;
-
- memcpy(ppid, &devlink_port->attrs.switch_id, sizeof(*ppid));
-
- return 0;
-}
-
-static void __net_exit devlink_pernet_pre_exit(struct net *net)
-{
- struct devlink *devlink;
- u32 actions_performed;
- unsigned long index;
- int err;
-
- /* In case network namespace is getting destroyed, reload
- * all devlink instances from this namespace into init_net.
- */
- devlinks_xa_for_each_registered_get(net, index, devlink) {
- WARN_ON(!(devlink->features & DEVLINK_F_RELOAD));
- mutex_lock(&devlink->lock);
- err = devlink_reload(devlink, &init_net,
- DEVLINK_RELOAD_ACTION_DRIVER_REINIT,
- DEVLINK_RELOAD_LIMIT_UNSPEC,
- &actions_performed, NULL);
- mutex_unlock(&devlink->lock);
- if (err && err != -EOPNOTSUPP)
- pr_warn("Failed to reload devlink instance into init_net\n");
- devlink_put(devlink);
- }
-}
-
-static struct pernet_operations devlink_pernet_ops __net_initdata = {
- .pre_exit = devlink_pernet_pre_exit,
-};
-
-static int __init devlink_init(void)
-{
- int err;
-
- err = genl_register_family(&devlink_nl_family);
- if (err)
- goto out;
- err = register_pernet_subsys(&devlink_pernet_ops);
-
-out:
- WARN_ON(err);
- return err;
-}
-
-subsys_initcall(devlink_init);
diff --git a/net/core/rtnetlink.c b/net/core/rtnetlink.c
index 2758b3f7c021..9d4507aa736b 100644
--- a/net/core/rtnetlink.c
+++ b/net/core/rtnetlink.c
@@ -2220,13 +2220,27 @@ static int rtnl_dump_ifinfo(struct sk_buff *skb, struct netlink_callback *cb)
return err;
}

-int rtnl_nla_parse_ifla(struct nlattr **tb, const struct nlattr *head, int len,
- struct netlink_ext_ack *exterr)
+int rtnl_nla_parse_ifinfomsg(struct nlattr **tb, const struct nlattr *nla_peer,
+ struct netlink_ext_ack *exterr)
{
- return nla_parse_deprecated(tb, IFLA_MAX, head, len, ifla_policy,
+ const struct ifinfomsg *ifmp;
+ const struct nlattr *attrs;
+ size_t len;
+
+ ifmp = nla_data(nla_peer);
+ attrs = nla_data(nla_peer) + sizeof(struct ifinfomsg);
+ len = nla_len(nla_peer) - sizeof(struct ifinfomsg);
+
+ if (ifmp->ifi_index < 0) {
+ NL_SET_ERR_MSG_ATTR(exterr, nla_peer,
+ "ifindex can't be negative");
+ return -EINVAL;
+ }
+
+ return nla_parse_deprecated(tb, IFLA_MAX, attrs, len, ifla_policy,
exterr);
}
-EXPORT_SYMBOL(rtnl_nla_parse_ifla);
+EXPORT_SYMBOL(rtnl_nla_parse_ifinfomsg);

struct net *rtnl_link_get_net(struct net *src_net, struct nlattr *tb[])
{
@@ -3451,6 +3465,9 @@ static int __rtnl_newlink(struct sk_buff *skb, struct nlmsghdr *nlh,
if (ifm->ifi_index > 0) {
link_specified = true;
dev = __dev_get_by_index(net, ifm->ifi_index);
+ } else if (ifm->ifi_index < 0) {
+ NL_SET_ERR_MSG(extack, "ifindex can't be negative");
+ return -EINVAL;
} else if (tb[IFLA_IFNAME] || tb[IFLA_ALT_IFNAME]) {
link_specified = true;
dev = rtnl_dev_get(net, tb);
diff --git a/net/dccp/ipv4.c b/net/dccp/ipv4.c
index b780827f5e0a..bfececa9e244 100644
--- a/net/dccp/ipv4.c
+++ b/net/dccp/ipv4.c
@@ -130,7 +130,7 @@ int dccp_v4_connect(struct sock *sk, struct sockaddr *uaddr, int addr_len)
inet->inet_daddr,
inet->inet_sport,
inet->inet_dport);
- inet->inet_id = get_random_u16();
+ atomic_set(&inet->inet_id, get_random_u16());

err = dccp_connect(sk);
rt = NULL;
@@ -430,7 +430,7 @@ struct sock *dccp_v4_request_recv_sock(const struct sock *sk,
RCU_INIT_POINTER(newinet->inet_opt, rcu_dereference(ireq->ireq_opt));
newinet->mc_index = inet_iif(skb);
newinet->mc_ttl = ip_hdr(skb)->ttl;
- newinet->inet_id = get_random_u16();
+ atomic_set(&newinet->inet_id, get_random_u16());

if (dst == NULL && (dst = inet_csk_route_child_sock(sk, newsk, req)) == NULL)
goto put_and_exit;
diff --git a/net/dccp/proto.c b/net/dccp/proto.c
index abc02d25edc1..c522c76a9f89 100644
--- a/net/dccp/proto.c
+++ b/net/dccp/proto.c
@@ -312,11 +312,15 @@ EXPORT_SYMBOL_GPL(dccp_disconnect);
__poll_t dccp_poll(struct file *file, struct socket *sock,
poll_table *wait)
{
- __poll_t mask;
struct sock *sk = sock->sk;
+ __poll_t mask;
+ u8 shutdown;
+ int state;

sock_poll_wait(file, sock, wait);
- if (sk->sk_state == DCCP_LISTEN)
+
+ state = inet_sk_state_load(sk);
+ if (state == DCCP_LISTEN)
return inet_csk_listen_poll(sk);

/* Socket is not locked. We are protected from async events
@@ -325,20 +329,21 @@ __poll_t dccp_poll(struct file *file, struct socket *sock,
*/

mask = 0;
- if (sk->sk_err)
+ if (READ_ONCE(sk->sk_err))
mask = EPOLLERR;
+ shutdown = READ_ONCE(sk->sk_shutdown);

- if (sk->sk_shutdown == SHUTDOWN_MASK || sk->sk_state == DCCP_CLOSED)
+ if (shutdown == SHUTDOWN_MASK || state == DCCP_CLOSED)
mask |= EPOLLHUP;
- if (sk->sk_shutdown & RCV_SHUTDOWN)
+ if (shutdown & RCV_SHUTDOWN)
mask |= EPOLLIN | EPOLLRDNORM | EPOLLRDHUP;

/* Connected? */
- if ((1 << sk->sk_state) & ~(DCCPF_REQUESTING | DCCPF_RESPOND)) {
+ if ((1 << state) & ~(DCCPF_REQUESTING | DCCPF_RESPOND)) {
if (atomic_read(&sk->sk_rmem_alloc) > 0)
mask |= EPOLLIN | EPOLLRDNORM;

- if (!(sk->sk_shutdown & SEND_SHUTDOWN)) {
+ if (!(shutdown & SEND_SHUTDOWN)) {
if (sk_stream_is_writeable(sk)) {
mask |= EPOLLOUT | EPOLLWRNORM;
} else { /* send SIGIO later */
@@ -356,7 +361,6 @@ __poll_t dccp_poll(struct file *file, struct socket *sock,
}
return mask;
}
-
EXPORT_SYMBOL_GPL(dccp_poll);

int dccp_ioctl(struct sock *sk, int cmd, unsigned long arg)
diff --git a/net/devlink/Makefile b/net/devlink/Makefile
new file mode 100644
index 000000000000..3a60959f71ee
--- /dev/null
+++ b/net/devlink/Makefile
@@ -0,0 +1,3 @@
+# SPDX-License-Identifier: GPL-2.0
+
+obj-y := leftover.o
diff --git a/net/devlink/leftover.c b/net/devlink/leftover.c
new file mode 100644
index 000000000000..63188d6a50fe
--- /dev/null
+++ b/net/devlink/leftover.c
@@ -0,0 +1,12550 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * net/core/devlink.c - Network physical/parent device Netlink interface
+ *
+ * Heavily inspired by net/wireless/
+ * Copyright (c) 2016 Mellanox Technologies. All rights reserved.
+ * Copyright (c) 2016 Jiri Pirko <jiri@xxxxxxxxxxxx>
+ */
+
+#include <linux/etherdevice.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/types.h>
+#include <linux/slab.h>
+#include <linux/gfp.h>
+#include <linux/device.h>
+#include <linux/list.h>
+#include <linux/netdevice.h>
+#include <linux/spinlock.h>
+#include <linux/refcount.h>
+#include <linux/workqueue.h>
+#include <linux/u64_stats_sync.h>
+#include <linux/timekeeping.h>
+#include <rdma/ib_verbs.h>
+#include <net/netlink.h>
+#include <net/genetlink.h>
+#include <net/rtnetlink.h>
+#include <net/net_namespace.h>
+#include <net/sock.h>
+#include <net/devlink.h>
+#define CREATE_TRACE_POINTS
+#include <trace/events/devlink.h>
+
+#define DEVLINK_RELOAD_STATS_ARRAY_SIZE \
+ (__DEVLINK_RELOAD_LIMIT_MAX * __DEVLINK_RELOAD_ACTION_MAX)
+
+struct devlink_dev_stats {
+ u32 reload_stats[DEVLINK_RELOAD_STATS_ARRAY_SIZE];
+ u32 remote_reload_stats[DEVLINK_RELOAD_STATS_ARRAY_SIZE];
+};
+
+struct devlink {
+ u32 index;
+ struct list_head port_list;
+ struct list_head rate_list;
+ struct list_head sb_list;
+ struct list_head dpipe_table_list;
+ struct list_head resource_list;
+ struct list_head param_list;
+ struct list_head region_list;
+ struct list_head reporter_list;
+ struct mutex reporters_lock; /* protects reporter_list */
+ struct devlink_dpipe_headers *dpipe_headers;
+ struct list_head trap_list;
+ struct list_head trap_group_list;
+ struct list_head trap_policer_list;
+ struct list_head linecard_list;
+ struct mutex linecards_lock; /* protects linecard_list */
+ const struct devlink_ops *ops;
+ u64 features;
+ struct xarray snapshot_ids;
+ struct devlink_dev_stats stats;
+ struct device *dev;
+ possible_net_t _net;
+ /* Serializes access to devlink instance specific objects such as
+ * port, sb, dpipe, resource, params, region, traps and more.
+ */
+ struct mutex lock;
+ struct lock_class_key lock_key;
+ u8 reload_failed:1;
+ refcount_t refcount;
+ struct completion comp;
+ struct rcu_head rcu;
+ char priv[] __aligned(NETDEV_ALIGN);
+};
+
+struct devlink_linecard_ops;
+struct devlink_linecard_type;
+
+struct devlink_linecard {
+ struct list_head list;
+ struct devlink *devlink;
+ unsigned int index;
+ refcount_t refcount;
+ const struct devlink_linecard_ops *ops;
+ void *priv;
+ enum devlink_linecard_state state;
+ struct mutex state_lock; /* Protects state */
+ const char *type;
+ struct devlink_linecard_type *types;
+ unsigned int types_count;
+ struct devlink *nested_devlink;
+};
+
+/**
+ * struct devlink_resource - devlink resource
+ * @name: name of the resource
+ * @id: id, per devlink instance
+ * @size: size of the resource
+ * @size_new: updated size of the resource, reload is needed
+ * @size_valid: valid in case the total size of the resource is valid
+ * including its children
+ * @parent: parent resource
+ * @size_params: size parameters
+ * @list: parent list
+ * @resource_list: list of child resources
+ * @occ_get: occupancy getter callback
+ * @occ_get_priv: occupancy getter callback priv
+ */
+struct devlink_resource {
+ const char *name;
+ u64 id;
+ u64 size;
+ u64 size_new;
+ bool size_valid;
+ struct devlink_resource *parent;
+ struct devlink_resource_size_params size_params;
+ struct list_head list;
+ struct list_head resource_list;
+ devlink_resource_occ_get_t *occ_get;
+ void *occ_get_priv;
+};
+
+void *devlink_priv(struct devlink *devlink)
+{
+ return &devlink->priv;
+}
+EXPORT_SYMBOL_GPL(devlink_priv);
+
+struct devlink *priv_to_devlink(void *priv)
+{
+ return container_of(priv, struct devlink, priv);
+}
+EXPORT_SYMBOL_GPL(priv_to_devlink);
+
+struct device *devlink_to_dev(const struct devlink *devlink)
+{
+ return devlink->dev;
+}
+EXPORT_SYMBOL_GPL(devlink_to_dev);
+
+static struct devlink_dpipe_field devlink_dpipe_fields_ethernet[] = {
+ {
+ .name = "destination mac",
+ .id = DEVLINK_DPIPE_FIELD_ETHERNET_DST_MAC,
+ .bitwidth = 48,
+ },
+};
+
+struct devlink_dpipe_header devlink_dpipe_header_ethernet = {
+ .name = "ethernet",
+ .id = DEVLINK_DPIPE_HEADER_ETHERNET,
+ .fields = devlink_dpipe_fields_ethernet,
+ .fields_count = ARRAY_SIZE(devlink_dpipe_fields_ethernet),
+ .global = true,
+};
+EXPORT_SYMBOL_GPL(devlink_dpipe_header_ethernet);
+
+static struct devlink_dpipe_field devlink_dpipe_fields_ipv4[] = {
+ {
+ .name = "destination ip",
+ .id = DEVLINK_DPIPE_FIELD_IPV4_DST_IP,
+ .bitwidth = 32,
+ },
+};
+
+struct devlink_dpipe_header devlink_dpipe_header_ipv4 = {
+ .name = "ipv4",
+ .id = DEVLINK_DPIPE_HEADER_IPV4,
+ .fields = devlink_dpipe_fields_ipv4,
+ .fields_count = ARRAY_SIZE(devlink_dpipe_fields_ipv4),
+ .global = true,
+};
+EXPORT_SYMBOL_GPL(devlink_dpipe_header_ipv4);
+
+static struct devlink_dpipe_field devlink_dpipe_fields_ipv6[] = {
+ {
+ .name = "destination ip",
+ .id = DEVLINK_DPIPE_FIELD_IPV6_DST_IP,
+ .bitwidth = 128,
+ },
+};
+
+struct devlink_dpipe_header devlink_dpipe_header_ipv6 = {
+ .name = "ipv6",
+ .id = DEVLINK_DPIPE_HEADER_IPV6,
+ .fields = devlink_dpipe_fields_ipv6,
+ .fields_count = ARRAY_SIZE(devlink_dpipe_fields_ipv6),
+ .global = true,
+};
+EXPORT_SYMBOL_GPL(devlink_dpipe_header_ipv6);
+
+EXPORT_TRACEPOINT_SYMBOL_GPL(devlink_hwmsg);
+EXPORT_TRACEPOINT_SYMBOL_GPL(devlink_hwerr);
+EXPORT_TRACEPOINT_SYMBOL_GPL(devlink_trap_report);
+
+static const struct nla_policy devlink_function_nl_policy[DEVLINK_PORT_FUNCTION_ATTR_MAX + 1] = {
+ [DEVLINK_PORT_FUNCTION_ATTR_HW_ADDR] = { .type = NLA_BINARY },
+ [DEVLINK_PORT_FN_ATTR_STATE] =
+ NLA_POLICY_RANGE(NLA_U8, DEVLINK_PORT_FN_STATE_INACTIVE,
+ DEVLINK_PORT_FN_STATE_ACTIVE),
+};
+
+static const struct nla_policy devlink_selftest_nl_policy[DEVLINK_ATTR_SELFTEST_ID_MAX + 1] = {
+ [DEVLINK_ATTR_SELFTEST_ID_FLASH] = { .type = NLA_FLAG },
+};
+
+static DEFINE_XARRAY_FLAGS(devlinks, XA_FLAGS_ALLOC);
+#define DEVLINK_REGISTERED XA_MARK_1
+#define DEVLINK_UNREGISTERING XA_MARK_2
+
+/* devlink instances are open to the access from the user space after
+ * devlink_register() call. Such logical barrier allows us to have certain
+ * expectations related to locking.
+ *
+ * Before *_register() - we are in initialization stage and no parallel
+ * access possible to the devlink instance. All drivers perform that phase
+ * by implicitly holding device_lock.
+ *
+ * After *_register() - users and driver can access devlink instance at
+ * the same time.
+ */
+#define ASSERT_DEVLINK_REGISTERED(d) \
+ WARN_ON_ONCE(!xa_get_mark(&devlinks, (d)->index, DEVLINK_REGISTERED))
+#define ASSERT_DEVLINK_NOT_REGISTERED(d) \
+ WARN_ON_ONCE(xa_get_mark(&devlinks, (d)->index, DEVLINK_REGISTERED))
+
+struct net *devlink_net(const struct devlink *devlink)
+{
+ return read_pnet(&devlink->_net);
+}
+EXPORT_SYMBOL_GPL(devlink_net);
+
+static void __devlink_put_rcu(struct rcu_head *head)
+{
+ struct devlink *devlink = container_of(head, struct devlink, rcu);
+
+ complete(&devlink->comp);
+}
+
+void devlink_put(struct devlink *devlink)
+{
+ if (refcount_dec_and_test(&devlink->refcount))
+ /* Make sure unregister operation that may await the completion
+ * is unblocked only after all users are after the end of
+ * RCU grace period.
+ */
+ call_rcu(&devlink->rcu, __devlink_put_rcu);
+}
+
+struct devlink *__must_check devlink_try_get(struct devlink *devlink)
+{
+ if (refcount_inc_not_zero(&devlink->refcount))
+ return devlink;
+ return NULL;
+}
+
+void devl_assert_locked(struct devlink *devlink)
+{
+ lockdep_assert_held(&devlink->lock);
+}
+EXPORT_SYMBOL_GPL(devl_assert_locked);
+
+#ifdef CONFIG_LOCKDEP
+/* For use in conjunction with LOCKDEP only e.g. rcu_dereference_protected() */
+bool devl_lock_is_held(struct devlink *devlink)
+{
+ return lockdep_is_held(&devlink->lock);
+}
+EXPORT_SYMBOL_GPL(devl_lock_is_held);
+#endif
+
+void devl_lock(struct devlink *devlink)
+{
+ mutex_lock(&devlink->lock);
+}
+EXPORT_SYMBOL_GPL(devl_lock);
+
+int devl_trylock(struct devlink *devlink)
+{
+ return mutex_trylock(&devlink->lock);
+}
+EXPORT_SYMBOL_GPL(devl_trylock);
+
+void devl_unlock(struct devlink *devlink)
+{
+ mutex_unlock(&devlink->lock);
+}
+EXPORT_SYMBOL_GPL(devl_unlock);
+
+static struct devlink *
+devlinks_xa_find_get(struct net *net, unsigned long *indexp, xa_mark_t filter,
+ void * (*xa_find_fn)(struct xarray *, unsigned long *,
+ unsigned long, xa_mark_t))
+{
+ struct devlink *devlink;
+
+ rcu_read_lock();
+retry:
+ devlink = xa_find_fn(&devlinks, indexp, ULONG_MAX, DEVLINK_REGISTERED);
+ if (!devlink)
+ goto unlock;
+
+ /* In case devlink_unregister() was already called and "unregistering"
+ * mark was set, do not allow to get a devlink reference here.
+ * This prevents live-lock of devlink_unregister() wait for completion.
+ */
+ if (xa_get_mark(&devlinks, *indexp, DEVLINK_UNREGISTERING))
+ goto retry;
+
+ /* For a possible retry, the xa_find_after() should be always used */
+ xa_find_fn = xa_find_after;
+ if (!devlink_try_get(devlink))
+ goto retry;
+ if (!net_eq(devlink_net(devlink), net)) {
+ devlink_put(devlink);
+ goto retry;
+ }
+unlock:
+ rcu_read_unlock();
+ return devlink;
+}
+
+static struct devlink *devlinks_xa_find_get_first(struct net *net,
+ unsigned long *indexp,
+ xa_mark_t filter)
+{
+ return devlinks_xa_find_get(net, indexp, filter, xa_find);
+}
+
+static struct devlink *devlinks_xa_find_get_next(struct net *net,
+ unsigned long *indexp,
+ xa_mark_t filter)
+{
+ return devlinks_xa_find_get(net, indexp, filter, xa_find_after);
+}
+
+/* Iterate over devlink pointers which were possible to get reference to.
+ * devlink_put() needs to be called for each iterated devlink pointer
+ * in loop body in order to release the reference.
+ */
+#define devlinks_xa_for_each_get(net, index, devlink, filter) \
+ for (index = 0, \
+ devlink = devlinks_xa_find_get_first(net, &index, filter); \
+ devlink; devlink = devlinks_xa_find_get_next(net, &index, filter))
+
+#define devlinks_xa_for_each_registered_get(net, index, devlink) \
+ devlinks_xa_for_each_get(net, index, devlink, DEVLINK_REGISTERED)
+
+static struct devlink *devlink_get_from_attrs(struct net *net,
+ struct nlattr **attrs)
+{
+ struct devlink *devlink;
+ unsigned long index;
+ char *busname;
+ char *devname;
+
+ if (!attrs[DEVLINK_ATTR_BUS_NAME] || !attrs[DEVLINK_ATTR_DEV_NAME])
+ return ERR_PTR(-EINVAL);
+
+ busname = nla_data(attrs[DEVLINK_ATTR_BUS_NAME]);
+ devname = nla_data(attrs[DEVLINK_ATTR_DEV_NAME]);
+
+ devlinks_xa_for_each_registered_get(net, index, devlink) {
+ if (strcmp(devlink->dev->bus->name, busname) == 0 &&
+ strcmp(dev_name(devlink->dev), devname) == 0)
+ return devlink;
+ devlink_put(devlink);
+ }
+
+ return ERR_PTR(-ENODEV);
+}
+
+#define ASSERT_DEVLINK_PORT_REGISTERED(devlink_port) \
+ WARN_ON_ONCE(!(devlink_port)->registered)
+#define ASSERT_DEVLINK_PORT_NOT_REGISTERED(devlink_port) \
+ WARN_ON_ONCE((devlink_port)->registered)
+#define ASSERT_DEVLINK_PORT_INITIALIZED(devlink_port) \
+ WARN_ON_ONCE(!(devlink_port)->initialized)
+
+static struct devlink_port *devlink_port_get_by_index(struct devlink *devlink,
+ unsigned int port_index)
+{
+ struct devlink_port *devlink_port;
+
+ list_for_each_entry(devlink_port, &devlink->port_list, list) {
+ if (devlink_port->index == port_index)
+ return devlink_port;
+ }
+ return NULL;
+}
+
+static bool devlink_port_index_exists(struct devlink *devlink,
+ unsigned int port_index)
+{
+ return devlink_port_get_by_index(devlink, port_index);
+}
+
+static struct devlink_port *devlink_port_get_from_attrs(struct devlink *devlink,
+ struct nlattr **attrs)
+{
+ if (attrs[DEVLINK_ATTR_PORT_INDEX]) {
+ u32 port_index = nla_get_u32(attrs[DEVLINK_ATTR_PORT_INDEX]);
+ struct devlink_port *devlink_port;
+
+ devlink_port = devlink_port_get_by_index(devlink, port_index);
+ if (!devlink_port)
+ return ERR_PTR(-ENODEV);
+ return devlink_port;
+ }
+ return ERR_PTR(-EINVAL);
+}
+
+static struct devlink_port *devlink_port_get_from_info(struct devlink *devlink,
+ struct genl_info *info)
+{
+ return devlink_port_get_from_attrs(devlink, info->attrs);
+}
+
+static inline bool
+devlink_rate_is_leaf(struct devlink_rate *devlink_rate)
+{
+ return devlink_rate->type == DEVLINK_RATE_TYPE_LEAF;
+}
+
+static inline bool
+devlink_rate_is_node(struct devlink_rate *devlink_rate)
+{
+ return devlink_rate->type == DEVLINK_RATE_TYPE_NODE;
+}
+
+static struct devlink_rate *
+devlink_rate_leaf_get_from_info(struct devlink *devlink, struct genl_info *info)
+{
+ struct devlink_rate *devlink_rate;
+ struct devlink_port *devlink_port;
+
+ devlink_port = devlink_port_get_from_attrs(devlink, info->attrs);
+ if (IS_ERR(devlink_port))
+ return ERR_CAST(devlink_port);
+ devlink_rate = devlink_port->devlink_rate;
+ return devlink_rate ?: ERR_PTR(-ENODEV);
+}
+
+static struct devlink_rate *
+devlink_rate_node_get_by_name(struct devlink *devlink, const char *node_name)
+{
+ static struct devlink_rate *devlink_rate;
+
+ list_for_each_entry(devlink_rate, &devlink->rate_list, list) {
+ if (devlink_rate_is_node(devlink_rate) &&
+ !strcmp(node_name, devlink_rate->name))
+ return devlink_rate;
+ }
+ return ERR_PTR(-ENODEV);
+}
+
+static struct devlink_rate *
+devlink_rate_node_get_from_attrs(struct devlink *devlink, struct nlattr **attrs)
+{
+ const char *rate_node_name;
+ size_t len;
+
+ if (!attrs[DEVLINK_ATTR_RATE_NODE_NAME])
+ return ERR_PTR(-EINVAL);
+ rate_node_name = nla_data(attrs[DEVLINK_ATTR_RATE_NODE_NAME]);
+ len = strlen(rate_node_name);
+ /* Name cannot be empty or decimal number */
+ if (!len || strspn(rate_node_name, "0123456789") == len)
+ return ERR_PTR(-EINVAL);
+
+ return devlink_rate_node_get_by_name(devlink, rate_node_name);
+}
+
+static struct devlink_rate *
+devlink_rate_node_get_from_info(struct devlink *devlink, struct genl_info *info)
+{
+ return devlink_rate_node_get_from_attrs(devlink, info->attrs);
+}
+
+static struct devlink_rate *
+devlink_rate_get_from_info(struct devlink *devlink, struct genl_info *info)
+{
+ struct nlattr **attrs = info->attrs;
+
+ if (attrs[DEVLINK_ATTR_PORT_INDEX])
+ return devlink_rate_leaf_get_from_info(devlink, info);
+ else if (attrs[DEVLINK_ATTR_RATE_NODE_NAME])
+ return devlink_rate_node_get_from_info(devlink, info);
+ else
+ return ERR_PTR(-EINVAL);
+}
+
+static struct devlink_linecard *
+devlink_linecard_get_by_index(struct devlink *devlink,
+ unsigned int linecard_index)
+{
+ struct devlink_linecard *devlink_linecard;
+
+ list_for_each_entry(devlink_linecard, &devlink->linecard_list, list) {
+ if (devlink_linecard->index == linecard_index)
+ return devlink_linecard;
+ }
+ return NULL;
+}
+
+static bool devlink_linecard_index_exists(struct devlink *devlink,
+ unsigned int linecard_index)
+{
+ return devlink_linecard_get_by_index(devlink, linecard_index);
+}
+
+static struct devlink_linecard *
+devlink_linecard_get_from_attrs(struct devlink *devlink, struct nlattr **attrs)
+{
+ if (attrs[DEVLINK_ATTR_LINECARD_INDEX]) {
+ u32 linecard_index = nla_get_u32(attrs[DEVLINK_ATTR_LINECARD_INDEX]);
+ struct devlink_linecard *linecard;
+
+ mutex_lock(&devlink->linecards_lock);
+ linecard = devlink_linecard_get_by_index(devlink, linecard_index);
+ if (linecard)
+ refcount_inc(&linecard->refcount);
+ mutex_unlock(&devlink->linecards_lock);
+ if (!linecard)
+ return ERR_PTR(-ENODEV);
+ return linecard;
+ }
+ return ERR_PTR(-EINVAL);
+}
+
+static struct devlink_linecard *
+devlink_linecard_get_from_info(struct devlink *devlink, struct genl_info *info)
+{
+ return devlink_linecard_get_from_attrs(devlink, info->attrs);
+}
+
+static void devlink_linecard_put(struct devlink_linecard *linecard)
+{
+ if (refcount_dec_and_test(&linecard->refcount)) {
+ mutex_destroy(&linecard->state_lock);
+ kfree(linecard);
+ }
+}
+
+struct devlink_sb {
+ struct list_head list;
+ unsigned int index;
+ u32 size;
+ u16 ingress_pools_count;
+ u16 egress_pools_count;
+ u16 ingress_tc_count;
+ u16 egress_tc_count;
+};
+
+static u16 devlink_sb_pool_count(struct devlink_sb *devlink_sb)
+{
+ return devlink_sb->ingress_pools_count + devlink_sb->egress_pools_count;
+}
+
+static struct devlink_sb *devlink_sb_get_by_index(struct devlink *devlink,
+ unsigned int sb_index)
+{
+ struct devlink_sb *devlink_sb;
+
+ list_for_each_entry(devlink_sb, &devlink->sb_list, list) {
+ if (devlink_sb->index == sb_index)
+ return devlink_sb;
+ }
+ return NULL;
+}
+
+static bool devlink_sb_index_exists(struct devlink *devlink,
+ unsigned int sb_index)
+{
+ return devlink_sb_get_by_index(devlink, sb_index);
+}
+
+static struct devlink_sb *devlink_sb_get_from_attrs(struct devlink *devlink,
+ struct nlattr **attrs)
+{
+ if (attrs[DEVLINK_ATTR_SB_INDEX]) {
+ u32 sb_index = nla_get_u32(attrs[DEVLINK_ATTR_SB_INDEX]);
+ struct devlink_sb *devlink_sb;
+
+ devlink_sb = devlink_sb_get_by_index(devlink, sb_index);
+ if (!devlink_sb)
+ return ERR_PTR(-ENODEV);
+ return devlink_sb;
+ }
+ return ERR_PTR(-EINVAL);
+}
+
+static struct devlink_sb *devlink_sb_get_from_info(struct devlink *devlink,
+ struct genl_info *info)
+{
+ return devlink_sb_get_from_attrs(devlink, info->attrs);
+}
+
+static int devlink_sb_pool_index_get_from_attrs(struct devlink_sb *devlink_sb,
+ struct nlattr **attrs,
+ u16 *p_pool_index)
+{
+ u16 val;
+
+ if (!attrs[DEVLINK_ATTR_SB_POOL_INDEX])
+ return -EINVAL;
+
+ val = nla_get_u16(attrs[DEVLINK_ATTR_SB_POOL_INDEX]);
+ if (val >= devlink_sb_pool_count(devlink_sb))
+ return -EINVAL;
+ *p_pool_index = val;
+ return 0;
+}
+
+static int devlink_sb_pool_index_get_from_info(struct devlink_sb *devlink_sb,
+ struct genl_info *info,
+ u16 *p_pool_index)
+{
+ return devlink_sb_pool_index_get_from_attrs(devlink_sb, info->attrs,
+ p_pool_index);
+}
+
+static int
+devlink_sb_pool_type_get_from_attrs(struct nlattr **attrs,
+ enum devlink_sb_pool_type *p_pool_type)
+{
+ u8 val;
+
+ if (!attrs[DEVLINK_ATTR_SB_POOL_TYPE])
+ return -EINVAL;
+
+ val = nla_get_u8(attrs[DEVLINK_ATTR_SB_POOL_TYPE]);
+ if (val != DEVLINK_SB_POOL_TYPE_INGRESS &&
+ val != DEVLINK_SB_POOL_TYPE_EGRESS)
+ return -EINVAL;
+ *p_pool_type = val;
+ return 0;
+}
+
+static int
+devlink_sb_pool_type_get_from_info(struct genl_info *info,
+ enum devlink_sb_pool_type *p_pool_type)
+{
+ return devlink_sb_pool_type_get_from_attrs(info->attrs, p_pool_type);
+}
+
+static int
+devlink_sb_th_type_get_from_attrs(struct nlattr **attrs,
+ enum devlink_sb_threshold_type *p_th_type)
+{
+ u8 val;
+
+ if (!attrs[DEVLINK_ATTR_SB_POOL_THRESHOLD_TYPE])
+ return -EINVAL;
+
+ val = nla_get_u8(attrs[DEVLINK_ATTR_SB_POOL_THRESHOLD_TYPE]);
+ if (val != DEVLINK_SB_THRESHOLD_TYPE_STATIC &&
+ val != DEVLINK_SB_THRESHOLD_TYPE_DYNAMIC)
+ return -EINVAL;
+ *p_th_type = val;
+ return 0;
+}
+
+static int
+devlink_sb_th_type_get_from_info(struct genl_info *info,
+ enum devlink_sb_threshold_type *p_th_type)
+{
+ return devlink_sb_th_type_get_from_attrs(info->attrs, p_th_type);
+}
+
+static int
+devlink_sb_tc_index_get_from_attrs(struct devlink_sb *devlink_sb,
+ struct nlattr **attrs,
+ enum devlink_sb_pool_type pool_type,
+ u16 *p_tc_index)
+{
+ u16 val;
+
+ if (!attrs[DEVLINK_ATTR_SB_TC_INDEX])
+ return -EINVAL;
+
+ val = nla_get_u16(attrs[DEVLINK_ATTR_SB_TC_INDEX]);
+ if (pool_type == DEVLINK_SB_POOL_TYPE_INGRESS &&
+ val >= devlink_sb->ingress_tc_count)
+ return -EINVAL;
+ if (pool_type == DEVLINK_SB_POOL_TYPE_EGRESS &&
+ val >= devlink_sb->egress_tc_count)
+ return -EINVAL;
+ *p_tc_index = val;
+ return 0;
+}
+
+static int
+devlink_sb_tc_index_get_from_info(struct devlink_sb *devlink_sb,
+ struct genl_info *info,
+ enum devlink_sb_pool_type pool_type,
+ u16 *p_tc_index)
+{
+ return devlink_sb_tc_index_get_from_attrs(devlink_sb, info->attrs,
+ pool_type, p_tc_index);
+}
+
+struct devlink_region {
+ struct devlink *devlink;
+ struct devlink_port *port;
+ struct list_head list;
+ union {
+ const struct devlink_region_ops *ops;
+ const struct devlink_port_region_ops *port_ops;
+ };
+ struct mutex snapshot_lock; /* protects snapshot_list,
+ * max_snapshots and cur_snapshots
+ * consistency.
+ */
+ struct list_head snapshot_list;
+ u32 max_snapshots;
+ u32 cur_snapshots;
+ u64 size;
+};
+
+struct devlink_snapshot {
+ struct list_head list;
+ struct devlink_region *region;
+ u8 *data;
+ u32 id;
+};
+
+static struct devlink_region *
+devlink_region_get_by_name(struct devlink *devlink, const char *region_name)
+{
+ struct devlink_region *region;
+
+ list_for_each_entry(region, &devlink->region_list, list)
+ if (!strcmp(region->ops->name, region_name))
+ return region;
+
+ return NULL;
+}
+
+static struct devlink_region *
+devlink_port_region_get_by_name(struct devlink_port *port,
+ const char *region_name)
+{
+ struct devlink_region *region;
+
+ list_for_each_entry(region, &port->region_list, list)
+ if (!strcmp(region->ops->name, region_name))
+ return region;
+
+ return NULL;
+}
+
+static struct devlink_snapshot *
+devlink_region_snapshot_get_by_id(struct devlink_region *region, u32 id)
+{
+ struct devlink_snapshot *snapshot;
+
+ list_for_each_entry(snapshot, &region->snapshot_list, list)
+ if (snapshot->id == id)
+ return snapshot;
+
+ return NULL;
+}
+
+#define DEVLINK_NL_FLAG_NEED_PORT BIT(0)
+#define DEVLINK_NL_FLAG_NEED_DEVLINK_OR_PORT BIT(1)
+#define DEVLINK_NL_FLAG_NEED_RATE BIT(2)
+#define DEVLINK_NL_FLAG_NEED_RATE_NODE BIT(3)
+#define DEVLINK_NL_FLAG_NEED_LINECARD BIT(4)
+
+static int devlink_nl_pre_doit(const struct genl_ops *ops,
+ struct sk_buff *skb, struct genl_info *info)
+{
+ struct devlink_linecard *linecard;
+ struct devlink_port *devlink_port;
+ struct devlink *devlink;
+ int err;
+
+ devlink = devlink_get_from_attrs(genl_info_net(info), info->attrs);
+ if (IS_ERR(devlink))
+ return PTR_ERR(devlink);
+ devl_lock(devlink);
+ info->user_ptr[0] = devlink;
+ if (ops->internal_flags & DEVLINK_NL_FLAG_NEED_PORT) {
+ devlink_port = devlink_port_get_from_info(devlink, info);
+ if (IS_ERR(devlink_port)) {
+ err = PTR_ERR(devlink_port);
+ goto unlock;
+ }
+ info->user_ptr[1] = devlink_port;
+ } else if (ops->internal_flags & DEVLINK_NL_FLAG_NEED_DEVLINK_OR_PORT) {
+ devlink_port = devlink_port_get_from_info(devlink, info);
+ if (!IS_ERR(devlink_port))
+ info->user_ptr[1] = devlink_port;
+ } else if (ops->internal_flags & DEVLINK_NL_FLAG_NEED_RATE) {
+ struct devlink_rate *devlink_rate;
+
+ devlink_rate = devlink_rate_get_from_info(devlink, info);
+ if (IS_ERR(devlink_rate)) {
+ err = PTR_ERR(devlink_rate);
+ goto unlock;
+ }
+ info->user_ptr[1] = devlink_rate;
+ } else if (ops->internal_flags & DEVLINK_NL_FLAG_NEED_RATE_NODE) {
+ struct devlink_rate *rate_node;
+
+ rate_node = devlink_rate_node_get_from_info(devlink, info);
+ if (IS_ERR(rate_node)) {
+ err = PTR_ERR(rate_node);
+ goto unlock;
+ }
+ info->user_ptr[1] = rate_node;
+ } else if (ops->internal_flags & DEVLINK_NL_FLAG_NEED_LINECARD) {
+ linecard = devlink_linecard_get_from_info(devlink, info);
+ if (IS_ERR(linecard)) {
+ err = PTR_ERR(linecard);
+ goto unlock;
+ }
+ info->user_ptr[1] = linecard;
+ }
+ return 0;
+
+unlock:
+ devl_unlock(devlink);
+ devlink_put(devlink);
+ return err;
+}
+
+static void devlink_nl_post_doit(const struct genl_ops *ops,
+ struct sk_buff *skb, struct genl_info *info)
+{
+ struct devlink_linecard *linecard;
+ struct devlink *devlink;
+
+ devlink = info->user_ptr[0];
+ if (ops->internal_flags & DEVLINK_NL_FLAG_NEED_LINECARD) {
+ linecard = info->user_ptr[1];
+ devlink_linecard_put(linecard);
+ }
+ devl_unlock(devlink);
+ devlink_put(devlink);
+}
+
+static struct genl_family devlink_nl_family;
+
+enum devlink_multicast_groups {
+ DEVLINK_MCGRP_CONFIG,
+};
+
+static const struct genl_multicast_group devlink_nl_mcgrps[] = {
+ [DEVLINK_MCGRP_CONFIG] = { .name = DEVLINK_GENL_MCGRP_CONFIG_NAME },
+};
+
+static int devlink_nl_put_handle(struct sk_buff *msg, struct devlink *devlink)
+{
+ if (nla_put_string(msg, DEVLINK_ATTR_BUS_NAME, devlink->dev->bus->name))
+ return -EMSGSIZE;
+ if (nla_put_string(msg, DEVLINK_ATTR_DEV_NAME, dev_name(devlink->dev)))
+ return -EMSGSIZE;
+ return 0;
+}
+
+static int devlink_nl_put_nested_handle(struct sk_buff *msg, struct devlink *devlink)
+{
+ struct nlattr *nested_attr;
+
+ nested_attr = nla_nest_start(msg, DEVLINK_ATTR_NESTED_DEVLINK);
+ if (!nested_attr)
+ return -EMSGSIZE;
+ if (devlink_nl_put_handle(msg, devlink))
+ goto nla_put_failure;
+
+ nla_nest_end(msg, nested_attr);
+ return 0;
+
+nla_put_failure:
+ nla_nest_cancel(msg, nested_attr);
+ return -EMSGSIZE;
+}
+
+struct devlink_reload_combination {
+ enum devlink_reload_action action;
+ enum devlink_reload_limit limit;
+};
+
+static const struct devlink_reload_combination devlink_reload_invalid_combinations[] = {
+ {
+ /* can't reinitialize driver with no down time */
+ .action = DEVLINK_RELOAD_ACTION_DRIVER_REINIT,
+ .limit = DEVLINK_RELOAD_LIMIT_NO_RESET,
+ },
+};
+
+static bool
+devlink_reload_combination_is_invalid(enum devlink_reload_action action,
+ enum devlink_reload_limit limit)
+{
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(devlink_reload_invalid_combinations); i++)
+ if (devlink_reload_invalid_combinations[i].action == action &&
+ devlink_reload_invalid_combinations[i].limit == limit)
+ return true;
+ return false;
+}
+
+static bool
+devlink_reload_action_is_supported(struct devlink *devlink, enum devlink_reload_action action)
+{
+ return test_bit(action, &devlink->ops->reload_actions);
+}
+
+static bool
+devlink_reload_limit_is_supported(struct devlink *devlink, enum devlink_reload_limit limit)
+{
+ return test_bit(limit, &devlink->ops->reload_limits);
+}
+
+static int devlink_reload_stat_put(struct sk_buff *msg,
+ enum devlink_reload_limit limit, u32 value)
+{
+ struct nlattr *reload_stats_entry;
+
+ reload_stats_entry = nla_nest_start(msg, DEVLINK_ATTR_RELOAD_STATS_ENTRY);
+ if (!reload_stats_entry)
+ return -EMSGSIZE;
+
+ if (nla_put_u8(msg, DEVLINK_ATTR_RELOAD_STATS_LIMIT, limit) ||
+ nla_put_u32(msg, DEVLINK_ATTR_RELOAD_STATS_VALUE, value))
+ goto nla_put_failure;
+ nla_nest_end(msg, reload_stats_entry);
+ return 0;
+
+nla_put_failure:
+ nla_nest_cancel(msg, reload_stats_entry);
+ return -EMSGSIZE;
+}
+
+static int devlink_reload_stats_put(struct sk_buff *msg, struct devlink *devlink, bool is_remote)
+{
+ struct nlattr *reload_stats_attr, *act_info, *act_stats;
+ int i, j, stat_idx;
+ u32 value;
+
+ if (!is_remote)
+ reload_stats_attr = nla_nest_start(msg, DEVLINK_ATTR_RELOAD_STATS);
+ else
+ reload_stats_attr = nla_nest_start(msg, DEVLINK_ATTR_REMOTE_RELOAD_STATS);
+
+ if (!reload_stats_attr)
+ return -EMSGSIZE;
+
+ for (i = 0; i <= DEVLINK_RELOAD_ACTION_MAX; i++) {
+ if ((!is_remote &&
+ !devlink_reload_action_is_supported(devlink, i)) ||
+ i == DEVLINK_RELOAD_ACTION_UNSPEC)
+ continue;
+ act_info = nla_nest_start(msg, DEVLINK_ATTR_RELOAD_ACTION_INFO);
+ if (!act_info)
+ goto nla_put_failure;
+
+ if (nla_put_u8(msg, DEVLINK_ATTR_RELOAD_ACTION, i))
+ goto action_info_nest_cancel;
+ act_stats = nla_nest_start(msg, DEVLINK_ATTR_RELOAD_ACTION_STATS);
+ if (!act_stats)
+ goto action_info_nest_cancel;
+
+ for (j = 0; j <= DEVLINK_RELOAD_LIMIT_MAX; j++) {
+ /* Remote stats are shown even if not locally supported.
+ * Stats of actions with unspecified limit are shown
+ * though drivers don't need to register unspecified
+ * limit.
+ */
+ if ((!is_remote && j != DEVLINK_RELOAD_LIMIT_UNSPEC &&
+ !devlink_reload_limit_is_supported(devlink, j)) ||
+ devlink_reload_combination_is_invalid(i, j))
+ continue;
+
+ stat_idx = j * __DEVLINK_RELOAD_ACTION_MAX + i;
+ if (!is_remote)
+ value = devlink->stats.reload_stats[stat_idx];
+ else
+ value = devlink->stats.remote_reload_stats[stat_idx];
+ if (devlink_reload_stat_put(msg, j, value))
+ goto action_stats_nest_cancel;
+ }
+ nla_nest_end(msg, act_stats);
+ nla_nest_end(msg, act_info);
+ }
+ nla_nest_end(msg, reload_stats_attr);
+ return 0;
+
+action_stats_nest_cancel:
+ nla_nest_cancel(msg, act_stats);
+action_info_nest_cancel:
+ nla_nest_cancel(msg, act_info);
+nla_put_failure:
+ nla_nest_cancel(msg, reload_stats_attr);
+ return -EMSGSIZE;
+}
+
+static int devlink_nl_fill(struct sk_buff *msg, struct devlink *devlink,
+ enum devlink_command cmd, u32 portid,
+ u32 seq, int flags)
+{
+ struct nlattr *dev_stats;
+ void *hdr;
+
+ hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
+ if (!hdr)
+ return -EMSGSIZE;
+
+ if (devlink_nl_put_handle(msg, devlink))
+ goto nla_put_failure;
+ if (nla_put_u8(msg, DEVLINK_ATTR_RELOAD_FAILED, devlink->reload_failed))
+ goto nla_put_failure;
+
+ dev_stats = nla_nest_start(msg, DEVLINK_ATTR_DEV_STATS);
+ if (!dev_stats)
+ goto nla_put_failure;
+
+ if (devlink_reload_stats_put(msg, devlink, false))
+ goto dev_stats_nest_cancel;
+ if (devlink_reload_stats_put(msg, devlink, true))
+ goto dev_stats_nest_cancel;
+
+ nla_nest_end(msg, dev_stats);
+ genlmsg_end(msg, hdr);
+ return 0;
+
+dev_stats_nest_cancel:
+ nla_nest_cancel(msg, dev_stats);
+nla_put_failure:
+ genlmsg_cancel(msg, hdr);
+ return -EMSGSIZE;
+}
+
+static void devlink_notify(struct devlink *devlink, enum devlink_command cmd)
+{
+ struct sk_buff *msg;
+ int err;
+
+ WARN_ON(cmd != DEVLINK_CMD_NEW && cmd != DEVLINK_CMD_DEL);
+ WARN_ON(!xa_get_mark(&devlinks, devlink->index, DEVLINK_REGISTERED));
+
+ msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
+ if (!msg)
+ return;
+
+ err = devlink_nl_fill(msg, devlink, cmd, 0, 0, 0);
+ if (err) {
+ nlmsg_free(msg);
+ return;
+ }
+
+ genlmsg_multicast_netns(&devlink_nl_family, devlink_net(devlink),
+ msg, 0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL);
+}
+
+static int devlink_nl_port_attrs_put(struct sk_buff *msg,
+ struct devlink_port *devlink_port)
+{
+ struct devlink_port_attrs *attrs = &devlink_port->attrs;
+
+ if (!devlink_port->attrs_set)
+ return 0;
+ if (attrs->lanes) {
+ if (nla_put_u32(msg, DEVLINK_ATTR_PORT_LANES, attrs->lanes))
+ return -EMSGSIZE;
+ }
+ if (nla_put_u8(msg, DEVLINK_ATTR_PORT_SPLITTABLE, attrs->splittable))
+ return -EMSGSIZE;
+ if (nla_put_u16(msg, DEVLINK_ATTR_PORT_FLAVOUR, attrs->flavour))
+ return -EMSGSIZE;
+ switch (devlink_port->attrs.flavour) {
+ case DEVLINK_PORT_FLAVOUR_PCI_PF:
+ if (nla_put_u32(msg, DEVLINK_ATTR_PORT_CONTROLLER_NUMBER,
+ attrs->pci_pf.controller) ||
+ nla_put_u16(msg, DEVLINK_ATTR_PORT_PCI_PF_NUMBER, attrs->pci_pf.pf))
+ return -EMSGSIZE;
+ if (nla_put_u8(msg, DEVLINK_ATTR_PORT_EXTERNAL, attrs->pci_pf.external))
+ return -EMSGSIZE;
+ break;
+ case DEVLINK_PORT_FLAVOUR_PCI_VF:
+ if (nla_put_u32(msg, DEVLINK_ATTR_PORT_CONTROLLER_NUMBER,
+ attrs->pci_vf.controller) ||
+ nla_put_u16(msg, DEVLINK_ATTR_PORT_PCI_PF_NUMBER, attrs->pci_vf.pf) ||
+ nla_put_u16(msg, DEVLINK_ATTR_PORT_PCI_VF_NUMBER, attrs->pci_vf.vf))
+ return -EMSGSIZE;
+ if (nla_put_u8(msg, DEVLINK_ATTR_PORT_EXTERNAL, attrs->pci_vf.external))
+ return -EMSGSIZE;
+ break;
+ case DEVLINK_PORT_FLAVOUR_PCI_SF:
+ if (nla_put_u32(msg, DEVLINK_ATTR_PORT_CONTROLLER_NUMBER,
+ attrs->pci_sf.controller) ||
+ nla_put_u16(msg, DEVLINK_ATTR_PORT_PCI_PF_NUMBER,
+ attrs->pci_sf.pf) ||
+ nla_put_u32(msg, DEVLINK_ATTR_PORT_PCI_SF_NUMBER,
+ attrs->pci_sf.sf))
+ return -EMSGSIZE;
+ break;
+ case DEVLINK_PORT_FLAVOUR_PHYSICAL:
+ case DEVLINK_PORT_FLAVOUR_CPU:
+ case DEVLINK_PORT_FLAVOUR_DSA:
+ if (nla_put_u32(msg, DEVLINK_ATTR_PORT_NUMBER,
+ attrs->phys.port_number))
+ return -EMSGSIZE;
+ if (!attrs->split)
+ return 0;
+ if (nla_put_u32(msg, DEVLINK_ATTR_PORT_SPLIT_GROUP,
+ attrs->phys.port_number))
+ return -EMSGSIZE;
+ if (nla_put_u32(msg, DEVLINK_ATTR_PORT_SPLIT_SUBPORT_NUMBER,
+ attrs->phys.split_subport_number))
+ return -EMSGSIZE;
+ break;
+ default:
+ break;
+ }
+ return 0;
+}
+
+static int devlink_port_fn_hw_addr_fill(const struct devlink_ops *ops,
+ struct devlink_port *port,
+ struct sk_buff *msg,
+ struct netlink_ext_ack *extack,
+ bool *msg_updated)
+{
+ u8 hw_addr[MAX_ADDR_LEN];
+ int hw_addr_len;
+ int err;
+
+ if (!ops->port_function_hw_addr_get)
+ return 0;
+
+ err = ops->port_function_hw_addr_get(port, hw_addr, &hw_addr_len,
+ extack);
+ if (err) {
+ if (err == -EOPNOTSUPP)
+ return 0;
+ return err;
+ }
+ err = nla_put(msg, DEVLINK_PORT_FUNCTION_ATTR_HW_ADDR, hw_addr_len, hw_addr);
+ if (err)
+ return err;
+ *msg_updated = true;
+ return 0;
+}
+
+static int devlink_nl_rate_fill(struct sk_buff *msg,
+ struct devlink_rate *devlink_rate,
+ enum devlink_command cmd, u32 portid, u32 seq,
+ int flags, struct netlink_ext_ack *extack)
+{
+ struct devlink *devlink = devlink_rate->devlink;
+ void *hdr;
+
+ hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
+ if (!hdr)
+ return -EMSGSIZE;
+
+ if (devlink_nl_put_handle(msg, devlink))
+ goto nla_put_failure;
+
+ if (nla_put_u16(msg, DEVLINK_ATTR_RATE_TYPE, devlink_rate->type))
+ goto nla_put_failure;
+
+ if (devlink_rate_is_leaf(devlink_rate)) {
+ if (nla_put_u32(msg, DEVLINK_ATTR_PORT_INDEX,
+ devlink_rate->devlink_port->index))
+ goto nla_put_failure;
+ } else if (devlink_rate_is_node(devlink_rate)) {
+ if (nla_put_string(msg, DEVLINK_ATTR_RATE_NODE_NAME,
+ devlink_rate->name))
+ goto nla_put_failure;
+ }
+
+ if (nla_put_u64_64bit(msg, DEVLINK_ATTR_RATE_TX_SHARE,
+ devlink_rate->tx_share, DEVLINK_ATTR_PAD))
+ goto nla_put_failure;
+
+ if (nla_put_u64_64bit(msg, DEVLINK_ATTR_RATE_TX_MAX,
+ devlink_rate->tx_max, DEVLINK_ATTR_PAD))
+ goto nla_put_failure;
+
+ if (devlink_rate->parent)
+ if (nla_put_string(msg, DEVLINK_ATTR_RATE_PARENT_NODE_NAME,
+ devlink_rate->parent->name))
+ goto nla_put_failure;
+
+ genlmsg_end(msg, hdr);
+ return 0;
+
+nla_put_failure:
+ genlmsg_cancel(msg, hdr);
+ return -EMSGSIZE;
+}
+
+static bool
+devlink_port_fn_state_valid(enum devlink_port_fn_state state)
+{
+ return state == DEVLINK_PORT_FN_STATE_INACTIVE ||
+ state == DEVLINK_PORT_FN_STATE_ACTIVE;
+}
+
+static bool
+devlink_port_fn_opstate_valid(enum devlink_port_fn_opstate opstate)
+{
+ return opstate == DEVLINK_PORT_FN_OPSTATE_DETACHED ||
+ opstate == DEVLINK_PORT_FN_OPSTATE_ATTACHED;
+}
+
+static int devlink_port_fn_state_fill(const struct devlink_ops *ops,
+ struct devlink_port *port,
+ struct sk_buff *msg,
+ struct netlink_ext_ack *extack,
+ bool *msg_updated)
+{
+ enum devlink_port_fn_opstate opstate;
+ enum devlink_port_fn_state state;
+ int err;
+
+ if (!ops->port_fn_state_get)
+ return 0;
+
+ err = ops->port_fn_state_get(port, &state, &opstate, extack);
+ if (err) {
+ if (err == -EOPNOTSUPP)
+ return 0;
+ return err;
+ }
+ if (!devlink_port_fn_state_valid(state)) {
+ WARN_ON_ONCE(1);
+ NL_SET_ERR_MSG_MOD(extack, "Invalid state read from driver");
+ return -EINVAL;
+ }
+ if (!devlink_port_fn_opstate_valid(opstate)) {
+ WARN_ON_ONCE(1);
+ NL_SET_ERR_MSG_MOD(extack,
+ "Invalid operational state read from driver");
+ return -EINVAL;
+ }
+ if (nla_put_u8(msg, DEVLINK_PORT_FN_ATTR_STATE, state) ||
+ nla_put_u8(msg, DEVLINK_PORT_FN_ATTR_OPSTATE, opstate))
+ return -EMSGSIZE;
+ *msg_updated = true;
+ return 0;
+}
+
+static int
+devlink_nl_port_function_attrs_put(struct sk_buff *msg, struct devlink_port *port,
+ struct netlink_ext_ack *extack)
+{
+ const struct devlink_ops *ops;
+ struct nlattr *function_attr;
+ bool msg_updated = false;
+ int err;
+
+ function_attr = nla_nest_start_noflag(msg, DEVLINK_ATTR_PORT_FUNCTION);
+ if (!function_attr)
+ return -EMSGSIZE;
+
+ ops = port->devlink->ops;
+ err = devlink_port_fn_hw_addr_fill(ops, port, msg, extack,
+ &msg_updated);
+ if (err)
+ goto out;
+ err = devlink_port_fn_state_fill(ops, port, msg, extack, &msg_updated);
+out:
+ if (err || !msg_updated)
+ nla_nest_cancel(msg, function_attr);
+ else
+ nla_nest_end(msg, function_attr);
+ return err;
+}
+
+static int devlink_nl_port_fill(struct sk_buff *msg,
+ struct devlink_port *devlink_port,
+ enum devlink_command cmd, u32 portid, u32 seq,
+ int flags, struct netlink_ext_ack *extack)
+{
+ struct devlink *devlink = devlink_port->devlink;
+ void *hdr;
+
+ hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
+ if (!hdr)
+ return -EMSGSIZE;
+
+ if (devlink_nl_put_handle(msg, devlink))
+ goto nla_put_failure;
+ if (nla_put_u32(msg, DEVLINK_ATTR_PORT_INDEX, devlink_port->index))
+ goto nla_put_failure;
+
+ /* Hold rtnl lock while accessing port's netdev attributes. */
+ rtnl_lock();
+ spin_lock_bh(&devlink_port->type_lock);
+ if (nla_put_u16(msg, DEVLINK_ATTR_PORT_TYPE, devlink_port->type))
+ goto nla_put_failure_type_locked;
+ if (devlink_port->desired_type != DEVLINK_PORT_TYPE_NOTSET &&
+ nla_put_u16(msg, DEVLINK_ATTR_PORT_DESIRED_TYPE,
+ devlink_port->desired_type))
+ goto nla_put_failure_type_locked;
+ if (devlink_port->type == DEVLINK_PORT_TYPE_ETH) {
+ struct net *net = devlink_net(devlink_port->devlink);
+ struct net_device *netdev = devlink_port->type_dev;
+
+ if (netdev && net_eq(net, dev_net(netdev)) &&
+ (nla_put_u32(msg, DEVLINK_ATTR_PORT_NETDEV_IFINDEX,
+ netdev->ifindex) ||
+ nla_put_string(msg, DEVLINK_ATTR_PORT_NETDEV_NAME,
+ netdev->name)))
+ goto nla_put_failure_type_locked;
+ }
+ if (devlink_port->type == DEVLINK_PORT_TYPE_IB) {
+ struct ib_device *ibdev = devlink_port->type_dev;
+
+ if (ibdev &&
+ nla_put_string(msg, DEVLINK_ATTR_PORT_IBDEV_NAME,
+ ibdev->name))
+ goto nla_put_failure_type_locked;
+ }
+ spin_unlock_bh(&devlink_port->type_lock);
+ rtnl_unlock();
+ if (devlink_nl_port_attrs_put(msg, devlink_port))
+ goto nla_put_failure;
+ if (devlink_nl_port_function_attrs_put(msg, devlink_port, extack))
+ goto nla_put_failure;
+ if (devlink_port->linecard &&
+ nla_put_u32(msg, DEVLINK_ATTR_LINECARD_INDEX,
+ devlink_port->linecard->index))
+ goto nla_put_failure;
+
+ genlmsg_end(msg, hdr);
+ return 0;
+
+nla_put_failure_type_locked:
+ spin_unlock_bh(&devlink_port->type_lock);
+ rtnl_unlock();
+nla_put_failure:
+ genlmsg_cancel(msg, hdr);
+ return -EMSGSIZE;
+}
+
+static void devlink_port_notify(struct devlink_port *devlink_port,
+ enum devlink_command cmd)
+{
+ struct devlink *devlink = devlink_port->devlink;
+ struct sk_buff *msg;
+ int err;
+
+ WARN_ON(cmd != DEVLINK_CMD_PORT_NEW && cmd != DEVLINK_CMD_PORT_DEL);
+
+ if (!xa_get_mark(&devlinks, devlink->index, DEVLINK_REGISTERED))
+ return;
+
+ msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
+ if (!msg)
+ return;
+
+ err = devlink_nl_port_fill(msg, devlink_port, cmd, 0, 0, 0, NULL);
+ if (err) {
+ nlmsg_free(msg);
+ return;
+ }
+
+ genlmsg_multicast_netns(&devlink_nl_family, devlink_net(devlink), msg,
+ 0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL);
+}
+
+static void devlink_rate_notify(struct devlink_rate *devlink_rate,
+ enum devlink_command cmd)
+{
+ struct devlink *devlink = devlink_rate->devlink;
+ struct sk_buff *msg;
+ int err;
+
+ WARN_ON(cmd != DEVLINK_CMD_RATE_NEW && cmd != DEVLINK_CMD_RATE_DEL);
+
+ if (!xa_get_mark(&devlinks, devlink->index, DEVLINK_REGISTERED))
+ return;
+
+ msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
+ if (!msg)
+ return;
+
+ err = devlink_nl_rate_fill(msg, devlink_rate, cmd, 0, 0, 0, NULL);
+ if (err) {
+ nlmsg_free(msg);
+ return;
+ }
+
+ genlmsg_multicast_netns(&devlink_nl_family, devlink_net(devlink), msg,
+ 0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL);
+}
+
+static int devlink_nl_cmd_rate_get_dumpit(struct sk_buff *msg,
+ struct netlink_callback *cb)
+{
+ struct devlink_rate *devlink_rate;
+ struct devlink *devlink;
+ int start = cb->args[0];
+ unsigned long index;
+ int idx = 0;
+ int err = 0;
+
+ devlinks_xa_for_each_registered_get(sock_net(msg->sk), index, devlink) {
+ devl_lock(devlink);
+ list_for_each_entry(devlink_rate, &devlink->rate_list, list) {
+ enum devlink_command cmd = DEVLINK_CMD_RATE_NEW;
+ u32 id = NETLINK_CB(cb->skb).portid;
+
+ if (idx < start) {
+ idx++;
+ continue;
+ }
+ err = devlink_nl_rate_fill(msg, devlink_rate, cmd, id,
+ cb->nlh->nlmsg_seq,
+ NLM_F_MULTI, NULL);
+ if (err) {
+ devl_unlock(devlink);
+ devlink_put(devlink);
+ goto out;
+ }
+ idx++;
+ }
+ devl_unlock(devlink);
+ devlink_put(devlink);
+ }
+out:
+ if (err != -EMSGSIZE)
+ return err;
+
+ cb->args[0] = idx;
+ return msg->len;
+}
+
+static int devlink_nl_cmd_rate_get_doit(struct sk_buff *skb,
+ struct genl_info *info)
+{
+ struct devlink_rate *devlink_rate = info->user_ptr[1];
+ struct sk_buff *msg;
+ int err;
+
+ msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
+ if (!msg)
+ return -ENOMEM;
+
+ err = devlink_nl_rate_fill(msg, devlink_rate, DEVLINK_CMD_RATE_NEW,
+ info->snd_portid, info->snd_seq, 0,
+ info->extack);
+ if (err) {
+ nlmsg_free(msg);
+ return err;
+ }
+
+ return genlmsg_reply(msg, info);
+}
+
+static bool
+devlink_rate_is_parent_node(struct devlink_rate *devlink_rate,
+ struct devlink_rate *parent)
+{
+ while (parent) {
+ if (parent == devlink_rate)
+ return true;
+ parent = parent->parent;
+ }
+ return false;
+}
+
+static int devlink_nl_cmd_get_doit(struct sk_buff *skb, struct genl_info *info)
+{
+ struct devlink *devlink = info->user_ptr[0];
+ struct sk_buff *msg;
+ int err;
+
+ msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
+ if (!msg)
+ return -ENOMEM;
+
+ err = devlink_nl_fill(msg, devlink, DEVLINK_CMD_NEW,
+ info->snd_portid, info->snd_seq, 0);
+ if (err) {
+ nlmsg_free(msg);
+ return err;
+ }
+
+ return genlmsg_reply(msg, info);
+}
+
+static int devlink_nl_cmd_get_dumpit(struct sk_buff *msg,
+ struct netlink_callback *cb)
+{
+ struct devlink *devlink;
+ int start = cb->args[0];
+ unsigned long index;
+ int idx = 0;
+ int err;
+
+ devlinks_xa_for_each_registered_get(sock_net(msg->sk), index, devlink) {
+ if (idx < start) {
+ idx++;
+ devlink_put(devlink);
+ continue;
+ }
+
+ devl_lock(devlink);
+ err = devlink_nl_fill(msg, devlink, DEVLINK_CMD_NEW,
+ NETLINK_CB(cb->skb).portid,
+ cb->nlh->nlmsg_seq, NLM_F_MULTI);
+ devl_unlock(devlink);
+ devlink_put(devlink);
+
+ if (err)
+ goto out;
+ idx++;
+ }
+out:
+ cb->args[0] = idx;
+ return msg->len;
+}
+
+static int devlink_nl_cmd_port_get_doit(struct sk_buff *skb,
+ struct genl_info *info)
+{
+ struct devlink_port *devlink_port = info->user_ptr[1];
+ struct sk_buff *msg;
+ int err;
+
+ msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
+ if (!msg)
+ return -ENOMEM;
+
+ err = devlink_nl_port_fill(msg, devlink_port, DEVLINK_CMD_PORT_NEW,
+ info->snd_portid, info->snd_seq, 0,
+ info->extack);
+ if (err) {
+ nlmsg_free(msg);
+ return err;
+ }
+
+ return genlmsg_reply(msg, info);
+}
+
+static int devlink_nl_cmd_port_get_dumpit(struct sk_buff *msg,
+ struct netlink_callback *cb)
+{
+ struct devlink *devlink;
+ struct devlink_port *devlink_port;
+ int start = cb->args[0];
+ unsigned long index;
+ int idx = 0;
+ int err;
+
+ devlinks_xa_for_each_registered_get(sock_net(msg->sk), index, devlink) {
+ devl_lock(devlink);
+ list_for_each_entry(devlink_port, &devlink->port_list, list) {
+ if (idx < start) {
+ idx++;
+ continue;
+ }
+ err = devlink_nl_port_fill(msg, devlink_port,
+ DEVLINK_CMD_NEW,
+ NETLINK_CB(cb->skb).portid,
+ cb->nlh->nlmsg_seq,
+ NLM_F_MULTI, cb->extack);
+ if (err) {
+ devl_unlock(devlink);
+ devlink_put(devlink);
+ goto out;
+ }
+ idx++;
+ }
+ devl_unlock(devlink);
+ devlink_put(devlink);
+ }
+out:
+ cb->args[0] = idx;
+ return msg->len;
+}
+
+static int devlink_port_type_set(struct devlink_port *devlink_port,
+ enum devlink_port_type port_type)
+
+{
+ int err;
+
+ if (!devlink_port->devlink->ops->port_type_set)
+ return -EOPNOTSUPP;
+
+ if (port_type == devlink_port->type)
+ return 0;
+
+ err = devlink_port->devlink->ops->port_type_set(devlink_port,
+ port_type);
+ if (err)
+ return err;
+
+ devlink_port->desired_type = port_type;
+ devlink_port_notify(devlink_port, DEVLINK_CMD_PORT_NEW);
+ return 0;
+}
+
+static int devlink_port_function_hw_addr_set(struct devlink_port *port,
+ const struct nlattr *attr,
+ struct netlink_ext_ack *extack)
+{
+ const struct devlink_ops *ops = port->devlink->ops;
+ const u8 *hw_addr;
+ int hw_addr_len;
+
+ hw_addr = nla_data(attr);
+ hw_addr_len = nla_len(attr);
+ if (hw_addr_len > MAX_ADDR_LEN) {
+ NL_SET_ERR_MSG_MOD(extack, "Port function hardware address too long");
+ return -EINVAL;
+ }
+ if (port->type == DEVLINK_PORT_TYPE_ETH) {
+ if (hw_addr_len != ETH_ALEN) {
+ NL_SET_ERR_MSG_MOD(extack, "Address must be 6 bytes for Ethernet device");
+ return -EINVAL;
+ }
+ if (!is_unicast_ether_addr(hw_addr)) {
+ NL_SET_ERR_MSG_MOD(extack, "Non-unicast hardware address unsupported");
+ return -EINVAL;
+ }
+ }
+
+ if (!ops->port_function_hw_addr_set) {
+ NL_SET_ERR_MSG_MOD(extack, "Port doesn't support function attributes");
+ return -EOPNOTSUPP;
+ }
+
+ return ops->port_function_hw_addr_set(port, hw_addr, hw_addr_len,
+ extack);
+}
+
+static int devlink_port_fn_state_set(struct devlink_port *port,
+ const struct nlattr *attr,
+ struct netlink_ext_ack *extack)
+{
+ enum devlink_port_fn_state state;
+ const struct devlink_ops *ops;
+
+ state = nla_get_u8(attr);
+ ops = port->devlink->ops;
+ if (!ops->port_fn_state_set) {
+ NL_SET_ERR_MSG_MOD(extack,
+ "Function does not support state setting");
+ return -EOPNOTSUPP;
+ }
+ return ops->port_fn_state_set(port, state, extack);
+}
+
+static int devlink_port_function_set(struct devlink_port *port,
+ const struct nlattr *attr,
+ struct netlink_ext_ack *extack)
+{
+ struct nlattr *tb[DEVLINK_PORT_FUNCTION_ATTR_MAX + 1];
+ int err;
+
+ err = nla_parse_nested(tb, DEVLINK_PORT_FUNCTION_ATTR_MAX, attr,
+ devlink_function_nl_policy, extack);
+ if (err < 0) {
+ NL_SET_ERR_MSG_MOD(extack, "Fail to parse port function attributes");
+ return err;
+ }
+
+ attr = tb[DEVLINK_PORT_FUNCTION_ATTR_HW_ADDR];
+ if (attr) {
+ err = devlink_port_function_hw_addr_set(port, attr, extack);
+ if (err)
+ return err;
+ }
+ /* Keep this as the last function attribute set, so that when
+ * multiple port function attributes are set along with state,
+ * Those can be applied first before activating the state.
+ */
+ attr = tb[DEVLINK_PORT_FN_ATTR_STATE];
+ if (attr)
+ err = devlink_port_fn_state_set(port, attr, extack);
+
+ if (!err)
+ devlink_port_notify(port, DEVLINK_CMD_PORT_NEW);
+ return err;
+}
+
+static int devlink_nl_cmd_port_set_doit(struct sk_buff *skb,
+ struct genl_info *info)
+{
+ struct devlink_port *devlink_port = info->user_ptr[1];
+ int err;
+
+ if (info->attrs[DEVLINK_ATTR_PORT_TYPE]) {
+ enum devlink_port_type port_type;
+
+ port_type = nla_get_u16(info->attrs[DEVLINK_ATTR_PORT_TYPE]);
+ err = devlink_port_type_set(devlink_port, port_type);
+ if (err)
+ return err;
+ }
+
+ if (info->attrs[DEVLINK_ATTR_PORT_FUNCTION]) {
+ struct nlattr *attr = info->attrs[DEVLINK_ATTR_PORT_FUNCTION];
+ struct netlink_ext_ack *extack = info->extack;
+
+ err = devlink_port_function_set(devlink_port, attr, extack);
+ if (err)
+ return err;
+ }
+
+ return 0;
+}
+
+static int devlink_nl_cmd_port_split_doit(struct sk_buff *skb,
+ struct genl_info *info)
+{
+ struct devlink_port *devlink_port = info->user_ptr[1];
+ struct devlink *devlink = info->user_ptr[0];
+ u32 count;
+
+ if (GENL_REQ_ATTR_CHECK(info, DEVLINK_ATTR_PORT_SPLIT_COUNT))
+ return -EINVAL;
+ if (!devlink->ops->port_split)
+ return -EOPNOTSUPP;
+
+ count = nla_get_u32(info->attrs[DEVLINK_ATTR_PORT_SPLIT_COUNT]);
+
+ if (!devlink_port->attrs.splittable) {
+ /* Split ports cannot be split. */
+ if (devlink_port->attrs.split)
+ NL_SET_ERR_MSG_MOD(info->extack, "Port cannot be split further");
+ else
+ NL_SET_ERR_MSG_MOD(info->extack, "Port cannot be split");
+ return -EINVAL;
+ }
+
+ if (count < 2 || !is_power_of_2(count) || count > devlink_port->attrs.lanes) {
+ NL_SET_ERR_MSG_MOD(info->extack, "Invalid split count");
+ return -EINVAL;
+ }
+
+ return devlink->ops->port_split(devlink, devlink_port, count,
+ info->extack);
+}
+
+static int devlink_nl_cmd_port_unsplit_doit(struct sk_buff *skb,
+ struct genl_info *info)
+{
+ struct devlink_port *devlink_port = info->user_ptr[1];
+ struct devlink *devlink = info->user_ptr[0];
+
+ if (!devlink->ops->port_unsplit)
+ return -EOPNOTSUPP;
+ return devlink->ops->port_unsplit(devlink, devlink_port, info->extack);
+}
+
+static int devlink_port_new_notify(struct devlink *devlink,
+ unsigned int port_index,
+ struct genl_info *info)
+{
+ struct devlink_port *devlink_port;
+ struct sk_buff *msg;
+ int err;
+
+ msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
+ if (!msg)
+ return -ENOMEM;
+
+ lockdep_assert_held(&devlink->lock);
+ devlink_port = devlink_port_get_by_index(devlink, port_index);
+ if (!devlink_port) {
+ err = -ENODEV;
+ goto out;
+ }
+
+ err = devlink_nl_port_fill(msg, devlink_port, DEVLINK_CMD_NEW,
+ info->snd_portid, info->snd_seq, 0, NULL);
+ if (err)
+ goto out;
+
+ return genlmsg_reply(msg, info);
+
+out:
+ nlmsg_free(msg);
+ return err;
+}
+
+static int devlink_nl_cmd_port_new_doit(struct sk_buff *skb,
+ struct genl_info *info)
+{
+ struct netlink_ext_ack *extack = info->extack;
+ struct devlink_port_new_attrs new_attrs = {};
+ struct devlink *devlink = info->user_ptr[0];
+ unsigned int new_port_index;
+ int err;
+
+ if (!devlink->ops->port_new || !devlink->ops->port_del)
+ return -EOPNOTSUPP;
+
+ if (!info->attrs[DEVLINK_ATTR_PORT_FLAVOUR] ||
+ !info->attrs[DEVLINK_ATTR_PORT_PCI_PF_NUMBER]) {
+ NL_SET_ERR_MSG_MOD(extack, "Port flavour or PCI PF are not specified");
+ return -EINVAL;
+ }
+ new_attrs.flavour = nla_get_u16(info->attrs[DEVLINK_ATTR_PORT_FLAVOUR]);
+ new_attrs.pfnum =
+ nla_get_u16(info->attrs[DEVLINK_ATTR_PORT_PCI_PF_NUMBER]);
+
+ if (info->attrs[DEVLINK_ATTR_PORT_INDEX]) {
+ /* Port index of the new port being created by driver. */
+ new_attrs.port_index =
+ nla_get_u32(info->attrs[DEVLINK_ATTR_PORT_INDEX]);
+ new_attrs.port_index_valid = true;
+ }
+ if (info->attrs[DEVLINK_ATTR_PORT_CONTROLLER_NUMBER]) {
+ new_attrs.controller =
+ nla_get_u16(info->attrs[DEVLINK_ATTR_PORT_CONTROLLER_NUMBER]);
+ new_attrs.controller_valid = true;
+ }
+ if (new_attrs.flavour == DEVLINK_PORT_FLAVOUR_PCI_SF &&
+ info->attrs[DEVLINK_ATTR_PORT_PCI_SF_NUMBER]) {
+ new_attrs.sfnum = nla_get_u32(info->attrs[DEVLINK_ATTR_PORT_PCI_SF_NUMBER]);
+ new_attrs.sfnum_valid = true;
+ }
+
+ err = devlink->ops->port_new(devlink, &new_attrs, extack,
+ &new_port_index);
+ if (err)
+ return err;
+
+ err = devlink_port_new_notify(devlink, new_port_index, info);
+ if (err && err != -ENODEV) {
+ /* Fail to send the response; destroy newly created port. */
+ devlink->ops->port_del(devlink, new_port_index, extack);
+ }
+ return err;
+}
+
+static int devlink_nl_cmd_port_del_doit(struct sk_buff *skb,
+ struct genl_info *info)
+{
+ struct netlink_ext_ack *extack = info->extack;
+ struct devlink *devlink = info->user_ptr[0];
+ unsigned int port_index;
+
+ if (!devlink->ops->port_del)
+ return -EOPNOTSUPP;
+
+ if (GENL_REQ_ATTR_CHECK(info, DEVLINK_ATTR_PORT_INDEX)) {
+ NL_SET_ERR_MSG_MOD(extack, "Port index is not specified");
+ return -EINVAL;
+ }
+ port_index = nla_get_u32(info->attrs[DEVLINK_ATTR_PORT_INDEX]);
+
+ return devlink->ops->port_del(devlink, port_index, extack);
+}
+
+static int
+devlink_nl_rate_parent_node_set(struct devlink_rate *devlink_rate,
+ struct genl_info *info,
+ struct nlattr *nla_parent)
+{
+ struct devlink *devlink = devlink_rate->devlink;
+ const char *parent_name = nla_data(nla_parent);
+ const struct devlink_ops *ops = devlink->ops;
+ size_t len = strlen(parent_name);
+ struct devlink_rate *parent;
+ int err = -EOPNOTSUPP;
+
+ parent = devlink_rate->parent;
+ if (parent && len) {
+ NL_SET_ERR_MSG_MOD(info->extack, "Rate object already has parent.");
+ return -EBUSY;
+ } else if (parent && !len) {
+ if (devlink_rate_is_leaf(devlink_rate))
+ err = ops->rate_leaf_parent_set(devlink_rate, NULL,
+ devlink_rate->priv, NULL,
+ info->extack);
+ else if (devlink_rate_is_node(devlink_rate))
+ err = ops->rate_node_parent_set(devlink_rate, NULL,
+ devlink_rate->priv, NULL,
+ info->extack);
+ if (err)
+ return err;
+
+ refcount_dec(&parent->refcnt);
+ devlink_rate->parent = NULL;
+ } else if (!parent && len) {
+ parent = devlink_rate_node_get_by_name(devlink, parent_name);
+ if (IS_ERR(parent))
+ return -ENODEV;
+
+ if (parent == devlink_rate) {
+ NL_SET_ERR_MSG_MOD(info->extack, "Parent to self is not allowed");
+ return -EINVAL;
+ }
+
+ if (devlink_rate_is_node(devlink_rate) &&
+ devlink_rate_is_parent_node(devlink_rate, parent->parent)) {
+ NL_SET_ERR_MSG_MOD(info->extack, "Node is already a parent of parent node.");
+ return -EEXIST;
+ }
+
+ if (devlink_rate_is_leaf(devlink_rate))
+ err = ops->rate_leaf_parent_set(devlink_rate, parent,
+ devlink_rate->priv, parent->priv,
+ info->extack);
+ else if (devlink_rate_is_node(devlink_rate))
+ err = ops->rate_node_parent_set(devlink_rate, parent,
+ devlink_rate->priv, parent->priv,
+ info->extack);
+ if (err)
+ return err;
+
+ refcount_inc(&parent->refcnt);
+ devlink_rate->parent = parent;
+ }
+
+ return 0;
+}
+
+static int devlink_nl_rate_set(struct devlink_rate *devlink_rate,
+ const struct devlink_ops *ops,
+ struct genl_info *info)
+{
+ struct nlattr *nla_parent, **attrs = info->attrs;
+ int err = -EOPNOTSUPP;
+ u64 rate;
+
+ if (attrs[DEVLINK_ATTR_RATE_TX_SHARE]) {
+ rate = nla_get_u64(attrs[DEVLINK_ATTR_RATE_TX_SHARE]);
+ if (devlink_rate_is_leaf(devlink_rate))
+ err = ops->rate_leaf_tx_share_set(devlink_rate, devlink_rate->priv,
+ rate, info->extack);
+ else if (devlink_rate_is_node(devlink_rate))
+ err = ops->rate_node_tx_share_set(devlink_rate, devlink_rate->priv,
+ rate, info->extack);
+ if (err)
+ return err;
+ devlink_rate->tx_share = rate;
+ }
+
+ if (attrs[DEVLINK_ATTR_RATE_TX_MAX]) {
+ rate = nla_get_u64(attrs[DEVLINK_ATTR_RATE_TX_MAX]);
+ if (devlink_rate_is_leaf(devlink_rate))
+ err = ops->rate_leaf_tx_max_set(devlink_rate, devlink_rate->priv,
+ rate, info->extack);
+ else if (devlink_rate_is_node(devlink_rate))
+ err = ops->rate_node_tx_max_set(devlink_rate, devlink_rate->priv,
+ rate, info->extack);
+ if (err)
+ return err;
+ devlink_rate->tx_max = rate;
+ }
+
+ nla_parent = attrs[DEVLINK_ATTR_RATE_PARENT_NODE_NAME];
+ if (nla_parent) {
+ err = devlink_nl_rate_parent_node_set(devlink_rate, info,
+ nla_parent);
+ if (err)
+ return err;
+ }
+
+ return 0;
+}
+
+static bool devlink_rate_set_ops_supported(const struct devlink_ops *ops,
+ struct genl_info *info,
+ enum devlink_rate_type type)
+{
+ struct nlattr **attrs = info->attrs;
+
+ if (type == DEVLINK_RATE_TYPE_LEAF) {
+ if (attrs[DEVLINK_ATTR_RATE_TX_SHARE] && !ops->rate_leaf_tx_share_set) {
+ NL_SET_ERR_MSG_MOD(info->extack, "TX share set isn't supported for the leafs");
+ return false;
+ }
+ if (attrs[DEVLINK_ATTR_RATE_TX_MAX] && !ops->rate_leaf_tx_max_set) {
+ NL_SET_ERR_MSG_MOD(info->extack, "TX max set isn't supported for the leafs");
+ return false;
+ }
+ if (attrs[DEVLINK_ATTR_RATE_PARENT_NODE_NAME] &&
+ !ops->rate_leaf_parent_set) {
+ NL_SET_ERR_MSG_MOD(info->extack, "Parent set isn't supported for the leafs");
+ return false;
+ }
+ } else if (type == DEVLINK_RATE_TYPE_NODE) {
+ if (attrs[DEVLINK_ATTR_RATE_TX_SHARE] && !ops->rate_node_tx_share_set) {
+ NL_SET_ERR_MSG_MOD(info->extack, "TX share set isn't supported for the nodes");
+ return false;
+ }
+ if (attrs[DEVLINK_ATTR_RATE_TX_MAX] && !ops->rate_node_tx_max_set) {
+ NL_SET_ERR_MSG_MOD(info->extack, "TX max set isn't supported for the nodes");
+ return false;
+ }
+ if (attrs[DEVLINK_ATTR_RATE_PARENT_NODE_NAME] &&
+ !ops->rate_node_parent_set) {
+ NL_SET_ERR_MSG_MOD(info->extack, "Parent set isn't supported for the nodes");
+ return false;
+ }
+ } else {
+ WARN(1, "Unknown type of rate object");
+ return false;
+ }
+
+ return true;
+}
+
+static int devlink_nl_cmd_rate_set_doit(struct sk_buff *skb,
+ struct genl_info *info)
+{
+ struct devlink_rate *devlink_rate = info->user_ptr[1];
+ struct devlink *devlink = devlink_rate->devlink;
+ const struct devlink_ops *ops = devlink->ops;
+ int err;
+
+ if (!ops || !devlink_rate_set_ops_supported(ops, info, devlink_rate->type))
+ return -EOPNOTSUPP;
+
+ err = devlink_nl_rate_set(devlink_rate, ops, info);
+
+ if (!err)
+ devlink_rate_notify(devlink_rate, DEVLINK_CMD_RATE_NEW);
+ return err;
+}
+
+static int devlink_nl_cmd_rate_new_doit(struct sk_buff *skb,
+ struct genl_info *info)
+{
+ struct devlink *devlink = info->user_ptr[0];
+ struct devlink_rate *rate_node;
+ const struct devlink_ops *ops;
+ int err;
+
+ ops = devlink->ops;
+ if (!ops || !ops->rate_node_new || !ops->rate_node_del) {
+ NL_SET_ERR_MSG_MOD(info->extack, "Rate nodes aren't supported");
+ return -EOPNOTSUPP;
+ }
+
+ if (!devlink_rate_set_ops_supported(ops, info, DEVLINK_RATE_TYPE_NODE))
+ return -EOPNOTSUPP;
+
+ rate_node = devlink_rate_node_get_from_attrs(devlink, info->attrs);
+ if (!IS_ERR(rate_node))
+ return -EEXIST;
+ else if (rate_node == ERR_PTR(-EINVAL))
+ return -EINVAL;
+
+ rate_node = kzalloc(sizeof(*rate_node), GFP_KERNEL);
+ if (!rate_node)
+ return -ENOMEM;
+
+ rate_node->devlink = devlink;
+ rate_node->type = DEVLINK_RATE_TYPE_NODE;
+ rate_node->name = nla_strdup(info->attrs[DEVLINK_ATTR_RATE_NODE_NAME], GFP_KERNEL);
+ if (!rate_node->name) {
+ err = -ENOMEM;
+ goto err_strdup;
+ }
+
+ err = ops->rate_node_new(rate_node, &rate_node->priv, info->extack);
+ if (err)
+ goto err_node_new;
+
+ err = devlink_nl_rate_set(rate_node, ops, info);
+ if (err)
+ goto err_rate_set;
+
+ refcount_set(&rate_node->refcnt, 1);
+ list_add(&rate_node->list, &devlink->rate_list);
+ devlink_rate_notify(rate_node, DEVLINK_CMD_RATE_NEW);
+ return 0;
+
+err_rate_set:
+ ops->rate_node_del(rate_node, rate_node->priv, info->extack);
+err_node_new:
+ kfree(rate_node->name);
+err_strdup:
+ kfree(rate_node);
+ return err;
+}
+
+static int devlink_nl_cmd_rate_del_doit(struct sk_buff *skb,
+ struct genl_info *info)
+{
+ struct devlink_rate *rate_node = info->user_ptr[1];
+ struct devlink *devlink = rate_node->devlink;
+ const struct devlink_ops *ops = devlink->ops;
+ int err;
+
+ if (refcount_read(&rate_node->refcnt) > 1) {
+ NL_SET_ERR_MSG_MOD(info->extack, "Node has children. Cannot delete node.");
+ return -EBUSY;
+ }
+
+ devlink_rate_notify(rate_node, DEVLINK_CMD_RATE_DEL);
+ err = ops->rate_node_del(rate_node, rate_node->priv, info->extack);
+ if (rate_node->parent)
+ refcount_dec(&rate_node->parent->refcnt);
+ list_del(&rate_node->list);
+ kfree(rate_node->name);
+ kfree(rate_node);
+ return err;
+}
+
+struct devlink_linecard_type {
+ const char *type;
+ const void *priv;
+};
+
+static int devlink_nl_linecard_fill(struct sk_buff *msg,
+ struct devlink *devlink,
+ struct devlink_linecard *linecard,
+ enum devlink_command cmd, u32 portid,
+ u32 seq, int flags,
+ struct netlink_ext_ack *extack)
+{
+ struct devlink_linecard_type *linecard_type;
+ struct nlattr *attr;
+ void *hdr;
+ int i;
+
+ hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
+ if (!hdr)
+ return -EMSGSIZE;
+
+ if (devlink_nl_put_handle(msg, devlink))
+ goto nla_put_failure;
+ if (nla_put_u32(msg, DEVLINK_ATTR_LINECARD_INDEX, linecard->index))
+ goto nla_put_failure;
+ if (nla_put_u8(msg, DEVLINK_ATTR_LINECARD_STATE, linecard->state))
+ goto nla_put_failure;
+ if (linecard->type &&
+ nla_put_string(msg, DEVLINK_ATTR_LINECARD_TYPE, linecard->type))
+ goto nla_put_failure;
+
+ if (linecard->types_count) {
+ attr = nla_nest_start(msg,
+ DEVLINK_ATTR_LINECARD_SUPPORTED_TYPES);
+ if (!attr)
+ goto nla_put_failure;
+ for (i = 0; i < linecard->types_count; i++) {
+ linecard_type = &linecard->types[i];
+ if (nla_put_string(msg, DEVLINK_ATTR_LINECARD_TYPE,
+ linecard_type->type)) {
+ nla_nest_cancel(msg, attr);
+ goto nla_put_failure;
+ }
+ }
+ nla_nest_end(msg, attr);
+ }
+
+ if (linecard->nested_devlink &&
+ devlink_nl_put_nested_handle(msg, linecard->nested_devlink))
+ goto nla_put_failure;
+
+ genlmsg_end(msg, hdr);
+ return 0;
+
+nla_put_failure:
+ genlmsg_cancel(msg, hdr);
+ return -EMSGSIZE;
+}
+
+static void devlink_linecard_notify(struct devlink_linecard *linecard,
+ enum devlink_command cmd)
+{
+ struct devlink *devlink = linecard->devlink;
+ struct sk_buff *msg;
+ int err;
+
+ WARN_ON(cmd != DEVLINK_CMD_LINECARD_NEW &&
+ cmd != DEVLINK_CMD_LINECARD_DEL);
+
+ if (!xa_get_mark(&devlinks, devlink->index, DEVLINK_REGISTERED))
+ return;
+
+ msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
+ if (!msg)
+ return;
+
+ err = devlink_nl_linecard_fill(msg, devlink, linecard, cmd, 0, 0, 0,
+ NULL);
+ if (err) {
+ nlmsg_free(msg);
+ return;
+ }
+
+ genlmsg_multicast_netns(&devlink_nl_family, devlink_net(devlink),
+ msg, 0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL);
+}
+
+static int devlink_nl_cmd_linecard_get_doit(struct sk_buff *skb,
+ struct genl_info *info)
+{
+ struct devlink_linecard *linecard = info->user_ptr[1];
+ struct devlink *devlink = linecard->devlink;
+ struct sk_buff *msg;
+ int err;
+
+ msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
+ if (!msg)
+ return -ENOMEM;
+
+ mutex_lock(&linecard->state_lock);
+ err = devlink_nl_linecard_fill(msg, devlink, linecard,
+ DEVLINK_CMD_LINECARD_NEW,
+ info->snd_portid, info->snd_seq, 0,
+ info->extack);
+ mutex_unlock(&linecard->state_lock);
+ if (err) {
+ nlmsg_free(msg);
+ return err;
+ }
+
+ return genlmsg_reply(msg, info);
+}
+
+static int devlink_nl_cmd_linecard_get_dumpit(struct sk_buff *msg,
+ struct netlink_callback *cb)
+{
+ struct devlink_linecard *linecard;
+ struct devlink *devlink;
+ int start = cb->args[0];
+ unsigned long index;
+ int idx = 0;
+ int err;
+
+ devlinks_xa_for_each_registered_get(sock_net(msg->sk), index, devlink) {
+ mutex_lock(&devlink->linecards_lock);
+ list_for_each_entry(linecard, &devlink->linecard_list, list) {
+ if (idx < start) {
+ idx++;
+ continue;
+ }
+ mutex_lock(&linecard->state_lock);
+ err = devlink_nl_linecard_fill(msg, devlink, linecard,
+ DEVLINK_CMD_LINECARD_NEW,
+ NETLINK_CB(cb->skb).portid,
+ cb->nlh->nlmsg_seq,
+ NLM_F_MULTI,
+ cb->extack);
+ mutex_unlock(&linecard->state_lock);
+ if (err) {
+ mutex_unlock(&devlink->linecards_lock);
+ devlink_put(devlink);
+ goto out;
+ }
+ idx++;
+ }
+ mutex_unlock(&devlink->linecards_lock);
+ devlink_put(devlink);
+ }
+out:
+ cb->args[0] = idx;
+ return msg->len;
+}
+
+static struct devlink_linecard_type *
+devlink_linecard_type_lookup(struct devlink_linecard *linecard,
+ const char *type)
+{
+ struct devlink_linecard_type *linecard_type;
+ int i;
+
+ for (i = 0; i < linecard->types_count; i++) {
+ linecard_type = &linecard->types[i];
+ if (!strcmp(type, linecard_type->type))
+ return linecard_type;
+ }
+ return NULL;
+}
+
+static int devlink_linecard_type_set(struct devlink_linecard *linecard,
+ const char *type,
+ struct netlink_ext_ack *extack)
+{
+ const struct devlink_linecard_ops *ops = linecard->ops;
+ struct devlink_linecard_type *linecard_type;
+ int err;
+
+ mutex_lock(&linecard->state_lock);
+ if (linecard->state == DEVLINK_LINECARD_STATE_PROVISIONING) {
+ NL_SET_ERR_MSG_MOD(extack, "Line card is currently being provisioned");
+ err = -EBUSY;
+ goto out;
+ }
+ if (linecard->state == DEVLINK_LINECARD_STATE_UNPROVISIONING) {
+ NL_SET_ERR_MSG_MOD(extack, "Line card is currently being unprovisioned");
+ err = -EBUSY;
+ goto out;
+ }
+
+ linecard_type = devlink_linecard_type_lookup(linecard, type);
+ if (!linecard_type) {
+ NL_SET_ERR_MSG_MOD(extack, "Unsupported line card type provided");
+ err = -EINVAL;
+ goto out;
+ }
+
+ if (linecard->state != DEVLINK_LINECARD_STATE_UNPROVISIONED &&
+ linecard->state != DEVLINK_LINECARD_STATE_PROVISIONING_FAILED) {
+ NL_SET_ERR_MSG_MOD(extack, "Line card already provisioned");
+ err = -EBUSY;
+ /* Check if the line card is provisioned in the same
+ * way the user asks. In case it is, make the operation
+ * to return success.
+ */
+ if (ops->same_provision &&
+ ops->same_provision(linecard, linecard->priv,
+ linecard_type->type,
+ linecard_type->priv))
+ err = 0;
+ goto out;
+ }
+
+ linecard->state = DEVLINK_LINECARD_STATE_PROVISIONING;
+ linecard->type = linecard_type->type;
+ devlink_linecard_notify(linecard, DEVLINK_CMD_LINECARD_NEW);
+ mutex_unlock(&linecard->state_lock);
+ err = ops->provision(linecard, linecard->priv, linecard_type->type,
+ linecard_type->priv, extack);
+ if (err) {
+ /* Provisioning failed. Assume the linecard is unprovisioned
+ * for future operations.
+ */
+ mutex_lock(&linecard->state_lock);
+ linecard->state = DEVLINK_LINECARD_STATE_UNPROVISIONED;
+ linecard->type = NULL;
+ devlink_linecard_notify(linecard, DEVLINK_CMD_LINECARD_NEW);
+ mutex_unlock(&linecard->state_lock);
+ }
+ return err;
+
+out:
+ mutex_unlock(&linecard->state_lock);
+ return err;
+}
+
+static int devlink_linecard_type_unset(struct devlink_linecard *linecard,
+ struct netlink_ext_ack *extack)
+{
+ int err;
+
+ mutex_lock(&linecard->state_lock);
+ if (linecard->state == DEVLINK_LINECARD_STATE_PROVISIONING) {
+ NL_SET_ERR_MSG_MOD(extack, "Line card is currently being provisioned");
+ err = -EBUSY;
+ goto out;
+ }
+ if (linecard->state == DEVLINK_LINECARD_STATE_UNPROVISIONING) {
+ NL_SET_ERR_MSG_MOD(extack, "Line card is currently being unprovisioned");
+ err = -EBUSY;
+ goto out;
+ }
+ if (linecard->state == DEVLINK_LINECARD_STATE_PROVISIONING_FAILED) {
+ linecard->state = DEVLINK_LINECARD_STATE_UNPROVISIONED;
+ linecard->type = NULL;
+ devlink_linecard_notify(linecard, DEVLINK_CMD_LINECARD_NEW);
+ err = 0;
+ goto out;
+ }
+
+ if (linecard->state == DEVLINK_LINECARD_STATE_UNPROVISIONED) {
+ NL_SET_ERR_MSG_MOD(extack, "Line card is not provisioned");
+ err = 0;
+ goto out;
+ }
+ linecard->state = DEVLINK_LINECARD_STATE_UNPROVISIONING;
+ devlink_linecard_notify(linecard, DEVLINK_CMD_LINECARD_NEW);
+ mutex_unlock(&linecard->state_lock);
+ err = linecard->ops->unprovision(linecard, linecard->priv,
+ extack);
+ if (err) {
+ /* Unprovisioning failed. Assume the linecard is unprovisioned
+ * for future operations.
+ */
+ mutex_lock(&linecard->state_lock);
+ linecard->state = DEVLINK_LINECARD_STATE_UNPROVISIONED;
+ linecard->type = NULL;
+ devlink_linecard_notify(linecard, DEVLINK_CMD_LINECARD_NEW);
+ mutex_unlock(&linecard->state_lock);
+ }
+ return err;
+
+out:
+ mutex_unlock(&linecard->state_lock);
+ return err;
+}
+
+static int devlink_nl_cmd_linecard_set_doit(struct sk_buff *skb,
+ struct genl_info *info)
+{
+ struct devlink_linecard *linecard = info->user_ptr[1];
+ struct netlink_ext_ack *extack = info->extack;
+ int err;
+
+ if (info->attrs[DEVLINK_ATTR_LINECARD_TYPE]) {
+ const char *type;
+
+ type = nla_data(info->attrs[DEVLINK_ATTR_LINECARD_TYPE]);
+ if (strcmp(type, "")) {
+ err = devlink_linecard_type_set(linecard, type, extack);
+ if (err)
+ return err;
+ } else {
+ err = devlink_linecard_type_unset(linecard, extack);
+ if (err)
+ return err;
+ }
+ }
+
+ return 0;
+}
+
+static int devlink_nl_sb_fill(struct sk_buff *msg, struct devlink *devlink,
+ struct devlink_sb *devlink_sb,
+ enum devlink_command cmd, u32 portid,
+ u32 seq, int flags)
+{
+ void *hdr;
+
+ hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
+ if (!hdr)
+ return -EMSGSIZE;
+
+ if (devlink_nl_put_handle(msg, devlink))
+ goto nla_put_failure;
+ if (nla_put_u32(msg, DEVLINK_ATTR_SB_INDEX, devlink_sb->index))
+ goto nla_put_failure;
+ if (nla_put_u32(msg, DEVLINK_ATTR_SB_SIZE, devlink_sb->size))
+ goto nla_put_failure;
+ if (nla_put_u16(msg, DEVLINK_ATTR_SB_INGRESS_POOL_COUNT,
+ devlink_sb->ingress_pools_count))
+ goto nla_put_failure;
+ if (nla_put_u16(msg, DEVLINK_ATTR_SB_EGRESS_POOL_COUNT,
+ devlink_sb->egress_pools_count))
+ goto nla_put_failure;
+ if (nla_put_u16(msg, DEVLINK_ATTR_SB_INGRESS_TC_COUNT,
+ devlink_sb->ingress_tc_count))
+ goto nla_put_failure;
+ if (nla_put_u16(msg, DEVLINK_ATTR_SB_EGRESS_TC_COUNT,
+ devlink_sb->egress_tc_count))
+ goto nla_put_failure;
+
+ genlmsg_end(msg, hdr);
+ return 0;
+
+nla_put_failure:
+ genlmsg_cancel(msg, hdr);
+ return -EMSGSIZE;
+}
+
+static int devlink_nl_cmd_sb_get_doit(struct sk_buff *skb,
+ struct genl_info *info)
+{
+ struct devlink *devlink = info->user_ptr[0];
+ struct devlink_sb *devlink_sb;
+ struct sk_buff *msg;
+ int err;
+
+ devlink_sb = devlink_sb_get_from_info(devlink, info);
+ if (IS_ERR(devlink_sb))
+ return PTR_ERR(devlink_sb);
+
+ msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
+ if (!msg)
+ return -ENOMEM;
+
+ err = devlink_nl_sb_fill(msg, devlink, devlink_sb,
+ DEVLINK_CMD_SB_NEW,
+ info->snd_portid, info->snd_seq, 0);
+ if (err) {
+ nlmsg_free(msg);
+ return err;
+ }
+
+ return genlmsg_reply(msg, info);
+}
+
+static int devlink_nl_cmd_sb_get_dumpit(struct sk_buff *msg,
+ struct netlink_callback *cb)
+{
+ struct devlink *devlink;
+ struct devlink_sb *devlink_sb;
+ int start = cb->args[0];
+ unsigned long index;
+ int idx = 0;
+ int err;
+
+ devlinks_xa_for_each_registered_get(sock_net(msg->sk), index, devlink) {
+ devl_lock(devlink);
+ list_for_each_entry(devlink_sb, &devlink->sb_list, list) {
+ if (idx < start) {
+ idx++;
+ continue;
+ }
+ err = devlink_nl_sb_fill(msg, devlink, devlink_sb,
+ DEVLINK_CMD_SB_NEW,
+ NETLINK_CB(cb->skb).portid,
+ cb->nlh->nlmsg_seq,
+ NLM_F_MULTI);
+ if (err) {
+ devl_unlock(devlink);
+ devlink_put(devlink);
+ goto out;
+ }
+ idx++;
+ }
+ devl_unlock(devlink);
+ devlink_put(devlink);
+ }
+out:
+ cb->args[0] = idx;
+ return msg->len;
+}
+
+static int devlink_nl_sb_pool_fill(struct sk_buff *msg, struct devlink *devlink,
+ struct devlink_sb *devlink_sb,
+ u16 pool_index, enum devlink_command cmd,
+ u32 portid, u32 seq, int flags)
+{
+ struct devlink_sb_pool_info pool_info;
+ void *hdr;
+ int err;
+
+ err = devlink->ops->sb_pool_get(devlink, devlink_sb->index,
+ pool_index, &pool_info);
+ if (err)
+ return err;
+
+ hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
+ if (!hdr)
+ return -EMSGSIZE;
+
+ if (devlink_nl_put_handle(msg, devlink))
+ goto nla_put_failure;
+ if (nla_put_u32(msg, DEVLINK_ATTR_SB_INDEX, devlink_sb->index))
+ goto nla_put_failure;
+ if (nla_put_u16(msg, DEVLINK_ATTR_SB_POOL_INDEX, pool_index))
+ goto nla_put_failure;
+ if (nla_put_u8(msg, DEVLINK_ATTR_SB_POOL_TYPE, pool_info.pool_type))
+ goto nla_put_failure;
+ if (nla_put_u32(msg, DEVLINK_ATTR_SB_POOL_SIZE, pool_info.size))
+ goto nla_put_failure;
+ if (nla_put_u8(msg, DEVLINK_ATTR_SB_POOL_THRESHOLD_TYPE,
+ pool_info.threshold_type))
+ goto nla_put_failure;
+ if (nla_put_u32(msg, DEVLINK_ATTR_SB_POOL_CELL_SIZE,
+ pool_info.cell_size))
+ goto nla_put_failure;
+
+ genlmsg_end(msg, hdr);
+ return 0;
+
+nla_put_failure:
+ genlmsg_cancel(msg, hdr);
+ return -EMSGSIZE;
+}
+
+static int devlink_nl_cmd_sb_pool_get_doit(struct sk_buff *skb,
+ struct genl_info *info)
+{
+ struct devlink *devlink = info->user_ptr[0];
+ struct devlink_sb *devlink_sb;
+ struct sk_buff *msg;
+ u16 pool_index;
+ int err;
+
+ devlink_sb = devlink_sb_get_from_info(devlink, info);
+ if (IS_ERR(devlink_sb))
+ return PTR_ERR(devlink_sb);
+
+ err = devlink_sb_pool_index_get_from_info(devlink_sb, info,
+ &pool_index);
+ if (err)
+ return err;
+
+ if (!devlink->ops->sb_pool_get)
+ return -EOPNOTSUPP;
+
+ msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
+ if (!msg)
+ return -ENOMEM;
+
+ err = devlink_nl_sb_pool_fill(msg, devlink, devlink_sb, pool_index,
+ DEVLINK_CMD_SB_POOL_NEW,
+ info->snd_portid, info->snd_seq, 0);
+ if (err) {
+ nlmsg_free(msg);
+ return err;
+ }
+
+ return genlmsg_reply(msg, info);
+}
+
+static int __sb_pool_get_dumpit(struct sk_buff *msg, int start, int *p_idx,
+ struct devlink *devlink,
+ struct devlink_sb *devlink_sb,
+ u32 portid, u32 seq)
+{
+ u16 pool_count = devlink_sb_pool_count(devlink_sb);
+ u16 pool_index;
+ int err;
+
+ for (pool_index = 0; pool_index < pool_count; pool_index++) {
+ if (*p_idx < start) {
+ (*p_idx)++;
+ continue;
+ }
+ err = devlink_nl_sb_pool_fill(msg, devlink,
+ devlink_sb,
+ pool_index,
+ DEVLINK_CMD_SB_POOL_NEW,
+ portid, seq, NLM_F_MULTI);
+ if (err)
+ return err;
+ (*p_idx)++;
+ }
+ return 0;
+}
+
+static int devlink_nl_cmd_sb_pool_get_dumpit(struct sk_buff *msg,
+ struct netlink_callback *cb)
+{
+ struct devlink *devlink;
+ struct devlink_sb *devlink_sb;
+ int start = cb->args[0];
+ unsigned long index;
+ int idx = 0;
+ int err = 0;
+
+ devlinks_xa_for_each_registered_get(sock_net(msg->sk), index, devlink) {
+ if (!devlink->ops->sb_pool_get)
+ goto retry;
+
+ devl_lock(devlink);
+ list_for_each_entry(devlink_sb, &devlink->sb_list, list) {
+ err = __sb_pool_get_dumpit(msg, start, &idx, devlink,
+ devlink_sb,
+ NETLINK_CB(cb->skb).portid,
+ cb->nlh->nlmsg_seq);
+ if (err == -EOPNOTSUPP) {
+ err = 0;
+ } else if (err) {
+ devl_unlock(devlink);
+ devlink_put(devlink);
+ goto out;
+ }
+ }
+ devl_unlock(devlink);
+retry:
+ devlink_put(devlink);
+ }
+out:
+ if (err != -EMSGSIZE)
+ return err;
+
+ cb->args[0] = idx;
+ return msg->len;
+}
+
+static int devlink_sb_pool_set(struct devlink *devlink, unsigned int sb_index,
+ u16 pool_index, u32 size,
+ enum devlink_sb_threshold_type threshold_type,
+ struct netlink_ext_ack *extack)
+
+{
+ const struct devlink_ops *ops = devlink->ops;
+
+ if (ops->sb_pool_set)
+ return ops->sb_pool_set(devlink, sb_index, pool_index,
+ size, threshold_type, extack);
+ return -EOPNOTSUPP;
+}
+
+static int devlink_nl_cmd_sb_pool_set_doit(struct sk_buff *skb,
+ struct genl_info *info)
+{
+ struct devlink *devlink = info->user_ptr[0];
+ enum devlink_sb_threshold_type threshold_type;
+ struct devlink_sb *devlink_sb;
+ u16 pool_index;
+ u32 size;
+ int err;
+
+ devlink_sb = devlink_sb_get_from_info(devlink, info);
+ if (IS_ERR(devlink_sb))
+ return PTR_ERR(devlink_sb);
+
+ err = devlink_sb_pool_index_get_from_info(devlink_sb, info,
+ &pool_index);
+ if (err)
+ return err;
+
+ err = devlink_sb_th_type_get_from_info(info, &threshold_type);
+ if (err)
+ return err;
+
+ if (GENL_REQ_ATTR_CHECK(info, DEVLINK_ATTR_SB_POOL_SIZE))
+ return -EINVAL;
+
+ size = nla_get_u32(info->attrs[DEVLINK_ATTR_SB_POOL_SIZE]);
+ return devlink_sb_pool_set(devlink, devlink_sb->index,
+ pool_index, size, threshold_type,
+ info->extack);
+}
+
+static int devlink_nl_sb_port_pool_fill(struct sk_buff *msg,
+ struct devlink *devlink,
+ struct devlink_port *devlink_port,
+ struct devlink_sb *devlink_sb,
+ u16 pool_index,
+ enum devlink_command cmd,
+ u32 portid, u32 seq, int flags)
+{
+ const struct devlink_ops *ops = devlink->ops;
+ u32 threshold;
+ void *hdr;
+ int err;
+
+ err = ops->sb_port_pool_get(devlink_port, devlink_sb->index,
+ pool_index, &threshold);
+ if (err)
+ return err;
+
+ hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
+ if (!hdr)
+ return -EMSGSIZE;
+
+ if (devlink_nl_put_handle(msg, devlink))
+ goto nla_put_failure;
+ if (nla_put_u32(msg, DEVLINK_ATTR_PORT_INDEX, devlink_port->index))
+ goto nla_put_failure;
+ if (nla_put_u32(msg, DEVLINK_ATTR_SB_INDEX, devlink_sb->index))
+ goto nla_put_failure;
+ if (nla_put_u16(msg, DEVLINK_ATTR_SB_POOL_INDEX, pool_index))
+ goto nla_put_failure;
+ if (nla_put_u32(msg, DEVLINK_ATTR_SB_THRESHOLD, threshold))
+ goto nla_put_failure;
+
+ if (ops->sb_occ_port_pool_get) {
+ u32 cur;
+ u32 max;
+
+ err = ops->sb_occ_port_pool_get(devlink_port, devlink_sb->index,
+ pool_index, &cur, &max);
+ if (err && err != -EOPNOTSUPP)
+ goto sb_occ_get_failure;
+ if (!err) {
+ if (nla_put_u32(msg, DEVLINK_ATTR_SB_OCC_CUR, cur))
+ goto nla_put_failure;
+ if (nla_put_u32(msg, DEVLINK_ATTR_SB_OCC_MAX, max))
+ goto nla_put_failure;
+ }
+ }
+
+ genlmsg_end(msg, hdr);
+ return 0;
+
+nla_put_failure:
+ err = -EMSGSIZE;
+sb_occ_get_failure:
+ genlmsg_cancel(msg, hdr);
+ return err;
+}
+
+static int devlink_nl_cmd_sb_port_pool_get_doit(struct sk_buff *skb,
+ struct genl_info *info)
+{
+ struct devlink_port *devlink_port = info->user_ptr[1];
+ struct devlink *devlink = devlink_port->devlink;
+ struct devlink_sb *devlink_sb;
+ struct sk_buff *msg;
+ u16 pool_index;
+ int err;
+
+ devlink_sb = devlink_sb_get_from_info(devlink, info);
+ if (IS_ERR(devlink_sb))
+ return PTR_ERR(devlink_sb);
+
+ err = devlink_sb_pool_index_get_from_info(devlink_sb, info,
+ &pool_index);
+ if (err)
+ return err;
+
+ if (!devlink->ops->sb_port_pool_get)
+ return -EOPNOTSUPP;
+
+ msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
+ if (!msg)
+ return -ENOMEM;
+
+ err = devlink_nl_sb_port_pool_fill(msg, devlink, devlink_port,
+ devlink_sb, pool_index,
+ DEVLINK_CMD_SB_PORT_POOL_NEW,
+ info->snd_portid, info->snd_seq, 0);
+ if (err) {
+ nlmsg_free(msg);
+ return err;
+ }
+
+ return genlmsg_reply(msg, info);
+}
+
+static int __sb_port_pool_get_dumpit(struct sk_buff *msg, int start, int *p_idx,
+ struct devlink *devlink,
+ struct devlink_sb *devlink_sb,
+ u32 portid, u32 seq)
+{
+ struct devlink_port *devlink_port;
+ u16 pool_count = devlink_sb_pool_count(devlink_sb);
+ u16 pool_index;
+ int err;
+
+ list_for_each_entry(devlink_port, &devlink->port_list, list) {
+ for (pool_index = 0; pool_index < pool_count; pool_index++) {
+ if (*p_idx < start) {
+ (*p_idx)++;
+ continue;
+ }
+ err = devlink_nl_sb_port_pool_fill(msg, devlink,
+ devlink_port,
+ devlink_sb,
+ pool_index,
+ DEVLINK_CMD_SB_PORT_POOL_NEW,
+ portid, seq,
+ NLM_F_MULTI);
+ if (err)
+ return err;
+ (*p_idx)++;
+ }
+ }
+ return 0;
+}
+
+static int devlink_nl_cmd_sb_port_pool_get_dumpit(struct sk_buff *msg,
+ struct netlink_callback *cb)
+{
+ struct devlink *devlink;
+ struct devlink_sb *devlink_sb;
+ int start = cb->args[0];
+ unsigned long index;
+ int idx = 0;
+ int err = 0;
+
+ devlinks_xa_for_each_registered_get(sock_net(msg->sk), index, devlink) {
+ if (!devlink->ops->sb_port_pool_get)
+ goto retry;
+
+ devl_lock(devlink);
+ list_for_each_entry(devlink_sb, &devlink->sb_list, list) {
+ err = __sb_port_pool_get_dumpit(msg, start, &idx,
+ devlink, devlink_sb,
+ NETLINK_CB(cb->skb).portid,
+ cb->nlh->nlmsg_seq);
+ if (err == -EOPNOTSUPP) {
+ err = 0;
+ } else if (err) {
+ devl_unlock(devlink);
+ devlink_put(devlink);
+ goto out;
+ }
+ }
+ devl_unlock(devlink);
+retry:
+ devlink_put(devlink);
+ }
+out:
+ if (err != -EMSGSIZE)
+ return err;
+
+ cb->args[0] = idx;
+ return msg->len;
+}
+
+static int devlink_sb_port_pool_set(struct devlink_port *devlink_port,
+ unsigned int sb_index, u16 pool_index,
+ u32 threshold,
+ struct netlink_ext_ack *extack)
+
+{
+ const struct devlink_ops *ops = devlink_port->devlink->ops;
+
+ if (ops->sb_port_pool_set)
+ return ops->sb_port_pool_set(devlink_port, sb_index,
+ pool_index, threshold, extack);
+ return -EOPNOTSUPP;
+}
+
+static int devlink_nl_cmd_sb_port_pool_set_doit(struct sk_buff *skb,
+ struct genl_info *info)
+{
+ struct devlink_port *devlink_port = info->user_ptr[1];
+ struct devlink *devlink = info->user_ptr[0];
+ struct devlink_sb *devlink_sb;
+ u16 pool_index;
+ u32 threshold;
+ int err;
+
+ devlink_sb = devlink_sb_get_from_info(devlink, info);
+ if (IS_ERR(devlink_sb))
+ return PTR_ERR(devlink_sb);
+
+ err = devlink_sb_pool_index_get_from_info(devlink_sb, info,
+ &pool_index);
+ if (err)
+ return err;
+
+ if (GENL_REQ_ATTR_CHECK(info, DEVLINK_ATTR_SB_THRESHOLD))
+ return -EINVAL;
+
+ threshold = nla_get_u32(info->attrs[DEVLINK_ATTR_SB_THRESHOLD]);
+ return devlink_sb_port_pool_set(devlink_port, devlink_sb->index,
+ pool_index, threshold, info->extack);
+}
+
+static int
+devlink_nl_sb_tc_pool_bind_fill(struct sk_buff *msg, struct devlink *devlink,
+ struct devlink_port *devlink_port,
+ struct devlink_sb *devlink_sb, u16 tc_index,
+ enum devlink_sb_pool_type pool_type,
+ enum devlink_command cmd,
+ u32 portid, u32 seq, int flags)
+{
+ const struct devlink_ops *ops = devlink->ops;
+ u16 pool_index;
+ u32 threshold;
+ void *hdr;
+ int err;
+
+ err = ops->sb_tc_pool_bind_get(devlink_port, devlink_sb->index,
+ tc_index, pool_type,
+ &pool_index, &threshold);
+ if (err)
+ return err;
+
+ hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
+ if (!hdr)
+ return -EMSGSIZE;
+
+ if (devlink_nl_put_handle(msg, devlink))
+ goto nla_put_failure;
+ if (nla_put_u32(msg, DEVLINK_ATTR_PORT_INDEX, devlink_port->index))
+ goto nla_put_failure;
+ if (nla_put_u32(msg, DEVLINK_ATTR_SB_INDEX, devlink_sb->index))
+ goto nla_put_failure;
+ if (nla_put_u16(msg, DEVLINK_ATTR_SB_TC_INDEX, tc_index))
+ goto nla_put_failure;
+ if (nla_put_u8(msg, DEVLINK_ATTR_SB_POOL_TYPE, pool_type))
+ goto nla_put_failure;
+ if (nla_put_u16(msg, DEVLINK_ATTR_SB_POOL_INDEX, pool_index))
+ goto nla_put_failure;
+ if (nla_put_u32(msg, DEVLINK_ATTR_SB_THRESHOLD, threshold))
+ goto nla_put_failure;
+
+ if (ops->sb_occ_tc_port_bind_get) {
+ u32 cur;
+ u32 max;
+
+ err = ops->sb_occ_tc_port_bind_get(devlink_port,
+ devlink_sb->index,
+ tc_index, pool_type,
+ &cur, &max);
+ if (err && err != -EOPNOTSUPP)
+ return err;
+ if (!err) {
+ if (nla_put_u32(msg, DEVLINK_ATTR_SB_OCC_CUR, cur))
+ goto nla_put_failure;
+ if (nla_put_u32(msg, DEVLINK_ATTR_SB_OCC_MAX, max))
+ goto nla_put_failure;
+ }
+ }
+
+ genlmsg_end(msg, hdr);
+ return 0;
+
+nla_put_failure:
+ genlmsg_cancel(msg, hdr);
+ return -EMSGSIZE;
+}
+
+static int devlink_nl_cmd_sb_tc_pool_bind_get_doit(struct sk_buff *skb,
+ struct genl_info *info)
+{
+ struct devlink_port *devlink_port = info->user_ptr[1];
+ struct devlink *devlink = devlink_port->devlink;
+ struct devlink_sb *devlink_sb;
+ struct sk_buff *msg;
+ enum devlink_sb_pool_type pool_type;
+ u16 tc_index;
+ int err;
+
+ devlink_sb = devlink_sb_get_from_info(devlink, info);
+ if (IS_ERR(devlink_sb))
+ return PTR_ERR(devlink_sb);
+
+ err = devlink_sb_pool_type_get_from_info(info, &pool_type);
+ if (err)
+ return err;
+
+ err = devlink_sb_tc_index_get_from_info(devlink_sb, info,
+ pool_type, &tc_index);
+ if (err)
+ return err;
+
+ if (!devlink->ops->sb_tc_pool_bind_get)
+ return -EOPNOTSUPP;
+
+ msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
+ if (!msg)
+ return -ENOMEM;
+
+ err = devlink_nl_sb_tc_pool_bind_fill(msg, devlink, devlink_port,
+ devlink_sb, tc_index, pool_type,
+ DEVLINK_CMD_SB_TC_POOL_BIND_NEW,
+ info->snd_portid,
+ info->snd_seq, 0);
+ if (err) {
+ nlmsg_free(msg);
+ return err;
+ }
+
+ return genlmsg_reply(msg, info);
+}
+
+static int __sb_tc_pool_bind_get_dumpit(struct sk_buff *msg,
+ int start, int *p_idx,
+ struct devlink *devlink,
+ struct devlink_sb *devlink_sb,
+ u32 portid, u32 seq)
+{
+ struct devlink_port *devlink_port;
+ u16 tc_index;
+ int err;
+
+ list_for_each_entry(devlink_port, &devlink->port_list, list) {
+ for (tc_index = 0;
+ tc_index < devlink_sb->ingress_tc_count; tc_index++) {
+ if (*p_idx < start) {
+ (*p_idx)++;
+ continue;
+ }
+ err = devlink_nl_sb_tc_pool_bind_fill(msg, devlink,
+ devlink_port,
+ devlink_sb,
+ tc_index,
+ DEVLINK_SB_POOL_TYPE_INGRESS,
+ DEVLINK_CMD_SB_TC_POOL_BIND_NEW,
+ portid, seq,
+ NLM_F_MULTI);
+ if (err)
+ return err;
+ (*p_idx)++;
+ }
+ for (tc_index = 0;
+ tc_index < devlink_sb->egress_tc_count; tc_index++) {
+ if (*p_idx < start) {
+ (*p_idx)++;
+ continue;
+ }
+ err = devlink_nl_sb_tc_pool_bind_fill(msg, devlink,
+ devlink_port,
+ devlink_sb,
+ tc_index,
+ DEVLINK_SB_POOL_TYPE_EGRESS,
+ DEVLINK_CMD_SB_TC_POOL_BIND_NEW,
+ portid, seq,
+ NLM_F_MULTI);
+ if (err)
+ return err;
+ (*p_idx)++;
+ }
+ }
+ return 0;
+}
+
+static int
+devlink_nl_cmd_sb_tc_pool_bind_get_dumpit(struct sk_buff *msg,
+ struct netlink_callback *cb)
+{
+ struct devlink *devlink;
+ struct devlink_sb *devlink_sb;
+ int start = cb->args[0];
+ unsigned long index;
+ int idx = 0;
+ int err = 0;
+
+ devlinks_xa_for_each_registered_get(sock_net(msg->sk), index, devlink) {
+ if (!devlink->ops->sb_tc_pool_bind_get)
+ goto retry;
+
+ devl_lock(devlink);
+ list_for_each_entry(devlink_sb, &devlink->sb_list, list) {
+ err = __sb_tc_pool_bind_get_dumpit(msg, start, &idx,
+ devlink,
+ devlink_sb,
+ NETLINK_CB(cb->skb).portid,
+ cb->nlh->nlmsg_seq);
+ if (err == -EOPNOTSUPP) {
+ err = 0;
+ } else if (err) {
+ devl_unlock(devlink);
+ devlink_put(devlink);
+ goto out;
+ }
+ }
+ devl_unlock(devlink);
+retry:
+ devlink_put(devlink);
+ }
+out:
+ if (err != -EMSGSIZE)
+ return err;
+
+ cb->args[0] = idx;
+ return msg->len;
+}
+
+static int devlink_sb_tc_pool_bind_set(struct devlink_port *devlink_port,
+ unsigned int sb_index, u16 tc_index,
+ enum devlink_sb_pool_type pool_type,
+ u16 pool_index, u32 threshold,
+ struct netlink_ext_ack *extack)
+
+{
+ const struct devlink_ops *ops = devlink_port->devlink->ops;
+
+ if (ops->sb_tc_pool_bind_set)
+ return ops->sb_tc_pool_bind_set(devlink_port, sb_index,
+ tc_index, pool_type,
+ pool_index, threshold, extack);
+ return -EOPNOTSUPP;
+}
+
+static int devlink_nl_cmd_sb_tc_pool_bind_set_doit(struct sk_buff *skb,
+ struct genl_info *info)
+{
+ struct devlink_port *devlink_port = info->user_ptr[1];
+ struct devlink *devlink = info->user_ptr[0];
+ enum devlink_sb_pool_type pool_type;
+ struct devlink_sb *devlink_sb;
+ u16 tc_index;
+ u16 pool_index;
+ u32 threshold;
+ int err;
+
+ devlink_sb = devlink_sb_get_from_info(devlink, info);
+ if (IS_ERR(devlink_sb))
+ return PTR_ERR(devlink_sb);
+
+ err = devlink_sb_pool_type_get_from_info(info, &pool_type);
+ if (err)
+ return err;
+
+ err = devlink_sb_tc_index_get_from_info(devlink_sb, info,
+ pool_type, &tc_index);
+ if (err)
+ return err;
+
+ err = devlink_sb_pool_index_get_from_info(devlink_sb, info,
+ &pool_index);
+ if (err)
+ return err;
+
+ if (GENL_REQ_ATTR_CHECK(info, DEVLINK_ATTR_SB_THRESHOLD))
+ return -EINVAL;
+
+ threshold = nla_get_u32(info->attrs[DEVLINK_ATTR_SB_THRESHOLD]);
+ return devlink_sb_tc_pool_bind_set(devlink_port, devlink_sb->index,
+ tc_index, pool_type,
+ pool_index, threshold, info->extack);
+}
+
+static int devlink_nl_cmd_sb_occ_snapshot_doit(struct sk_buff *skb,
+ struct genl_info *info)
+{
+ struct devlink *devlink = info->user_ptr[0];
+ const struct devlink_ops *ops = devlink->ops;
+ struct devlink_sb *devlink_sb;
+
+ devlink_sb = devlink_sb_get_from_info(devlink, info);
+ if (IS_ERR(devlink_sb))
+ return PTR_ERR(devlink_sb);
+
+ if (ops->sb_occ_snapshot)
+ return ops->sb_occ_snapshot(devlink, devlink_sb->index);
+ return -EOPNOTSUPP;
+}
+
+static int devlink_nl_cmd_sb_occ_max_clear_doit(struct sk_buff *skb,
+ struct genl_info *info)
+{
+ struct devlink *devlink = info->user_ptr[0];
+ const struct devlink_ops *ops = devlink->ops;
+ struct devlink_sb *devlink_sb;
+
+ devlink_sb = devlink_sb_get_from_info(devlink, info);
+ if (IS_ERR(devlink_sb))
+ return PTR_ERR(devlink_sb);
+
+ if (ops->sb_occ_max_clear)
+ return ops->sb_occ_max_clear(devlink, devlink_sb->index);
+ return -EOPNOTSUPP;
+}
+
+static int devlink_nl_eswitch_fill(struct sk_buff *msg, struct devlink *devlink,
+ enum devlink_command cmd, u32 portid,
+ u32 seq, int flags)
+{
+ const struct devlink_ops *ops = devlink->ops;
+ enum devlink_eswitch_encap_mode encap_mode;
+ u8 inline_mode;
+ void *hdr;
+ int err = 0;
+ u16 mode;
+
+ hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
+ if (!hdr)
+ return -EMSGSIZE;
+
+ err = devlink_nl_put_handle(msg, devlink);
+ if (err)
+ goto nla_put_failure;
+
+ if (ops->eswitch_mode_get) {
+ err = ops->eswitch_mode_get(devlink, &mode);
+ if (err)
+ goto nla_put_failure;
+ err = nla_put_u16(msg, DEVLINK_ATTR_ESWITCH_MODE, mode);
+ if (err)
+ goto nla_put_failure;
+ }
+
+ if (ops->eswitch_inline_mode_get) {
+ err = ops->eswitch_inline_mode_get(devlink, &inline_mode);
+ if (err)
+ goto nla_put_failure;
+ err = nla_put_u8(msg, DEVLINK_ATTR_ESWITCH_INLINE_MODE,
+ inline_mode);
+ if (err)
+ goto nla_put_failure;
+ }
+
+ if (ops->eswitch_encap_mode_get) {
+ err = ops->eswitch_encap_mode_get(devlink, &encap_mode);
+ if (err)
+ goto nla_put_failure;
+ err = nla_put_u8(msg, DEVLINK_ATTR_ESWITCH_ENCAP_MODE, encap_mode);
+ if (err)
+ goto nla_put_failure;
+ }
+
+ genlmsg_end(msg, hdr);
+ return 0;
+
+nla_put_failure:
+ genlmsg_cancel(msg, hdr);
+ return err;
+}
+
+static int devlink_nl_cmd_eswitch_get_doit(struct sk_buff *skb,
+ struct genl_info *info)
+{
+ struct devlink *devlink = info->user_ptr[0];
+ struct sk_buff *msg;
+ int err;
+
+ msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
+ if (!msg)
+ return -ENOMEM;
+
+ err = devlink_nl_eswitch_fill(msg, devlink, DEVLINK_CMD_ESWITCH_GET,
+ info->snd_portid, info->snd_seq, 0);
+
+ if (err) {
+ nlmsg_free(msg);
+ return err;
+ }
+
+ return genlmsg_reply(msg, info);
+}
+
+static int devlink_rate_nodes_check(struct devlink *devlink, u16 mode,
+ struct netlink_ext_ack *extack)
+{
+ struct devlink_rate *devlink_rate;
+
+ list_for_each_entry(devlink_rate, &devlink->rate_list, list)
+ if (devlink_rate_is_node(devlink_rate)) {
+ NL_SET_ERR_MSG_MOD(extack, "Rate node(s) exists.");
+ return -EBUSY;
+ }
+ return 0;
+}
+
+static int devlink_nl_cmd_eswitch_set_doit(struct sk_buff *skb,
+ struct genl_info *info)
+{
+ struct devlink *devlink = info->user_ptr[0];
+ const struct devlink_ops *ops = devlink->ops;
+ enum devlink_eswitch_encap_mode encap_mode;
+ u8 inline_mode;
+ int err = 0;
+ u16 mode;
+
+ if (info->attrs[DEVLINK_ATTR_ESWITCH_MODE]) {
+ if (!ops->eswitch_mode_set)
+ return -EOPNOTSUPP;
+ mode = nla_get_u16(info->attrs[DEVLINK_ATTR_ESWITCH_MODE]);
+ err = devlink_rate_nodes_check(devlink, mode, info->extack);
+ if (err)
+ return err;
+ err = ops->eswitch_mode_set(devlink, mode, info->extack);
+ if (err)
+ return err;
+ }
+
+ if (info->attrs[DEVLINK_ATTR_ESWITCH_INLINE_MODE]) {
+ if (!ops->eswitch_inline_mode_set)
+ return -EOPNOTSUPP;
+ inline_mode = nla_get_u8(
+ info->attrs[DEVLINK_ATTR_ESWITCH_INLINE_MODE]);
+ err = ops->eswitch_inline_mode_set(devlink, inline_mode,
+ info->extack);
+ if (err)
+ return err;
+ }
+
+ if (info->attrs[DEVLINK_ATTR_ESWITCH_ENCAP_MODE]) {
+ if (!ops->eswitch_encap_mode_set)
+ return -EOPNOTSUPP;
+ encap_mode = nla_get_u8(info->attrs[DEVLINK_ATTR_ESWITCH_ENCAP_MODE]);
+ err = ops->eswitch_encap_mode_set(devlink, encap_mode,
+ info->extack);
+ if (err)
+ return err;
+ }
+
+ return 0;
+}
+
+int devlink_dpipe_match_put(struct sk_buff *skb,
+ struct devlink_dpipe_match *match)
+{
+ struct devlink_dpipe_header *header = match->header;
+ struct devlink_dpipe_field *field = &header->fields[match->field_id];
+ struct nlattr *match_attr;
+
+ match_attr = nla_nest_start_noflag(skb, DEVLINK_ATTR_DPIPE_MATCH);
+ if (!match_attr)
+ return -EMSGSIZE;
+
+ if (nla_put_u32(skb, DEVLINK_ATTR_DPIPE_MATCH_TYPE, match->type) ||
+ nla_put_u32(skb, DEVLINK_ATTR_DPIPE_HEADER_INDEX, match->header_index) ||
+ nla_put_u32(skb, DEVLINK_ATTR_DPIPE_HEADER_ID, header->id) ||
+ nla_put_u32(skb, DEVLINK_ATTR_DPIPE_FIELD_ID, field->id) ||
+ nla_put_u8(skb, DEVLINK_ATTR_DPIPE_HEADER_GLOBAL, header->global))
+ goto nla_put_failure;
+
+ nla_nest_end(skb, match_attr);
+ return 0;
+
+nla_put_failure:
+ nla_nest_cancel(skb, match_attr);
+ return -EMSGSIZE;
+}
+EXPORT_SYMBOL_GPL(devlink_dpipe_match_put);
+
+static int devlink_dpipe_matches_put(struct devlink_dpipe_table *table,
+ struct sk_buff *skb)
+{
+ struct nlattr *matches_attr;
+
+ matches_attr = nla_nest_start_noflag(skb,
+ DEVLINK_ATTR_DPIPE_TABLE_MATCHES);
+ if (!matches_attr)
+ return -EMSGSIZE;
+
+ if (table->table_ops->matches_dump(table->priv, skb))
+ goto nla_put_failure;
+
+ nla_nest_end(skb, matches_attr);
+ return 0;
+
+nla_put_failure:
+ nla_nest_cancel(skb, matches_attr);
+ return -EMSGSIZE;
+}
+
+int devlink_dpipe_action_put(struct sk_buff *skb,
+ struct devlink_dpipe_action *action)
+{
+ struct devlink_dpipe_header *header = action->header;
+ struct devlink_dpipe_field *field = &header->fields[action->field_id];
+ struct nlattr *action_attr;
+
+ action_attr = nla_nest_start_noflag(skb, DEVLINK_ATTR_DPIPE_ACTION);
+ if (!action_attr)
+ return -EMSGSIZE;
+
+ if (nla_put_u32(skb, DEVLINK_ATTR_DPIPE_ACTION_TYPE, action->type) ||
+ nla_put_u32(skb, DEVLINK_ATTR_DPIPE_HEADER_INDEX, action->header_index) ||
+ nla_put_u32(skb, DEVLINK_ATTR_DPIPE_HEADER_ID, header->id) ||
+ nla_put_u32(skb, DEVLINK_ATTR_DPIPE_FIELD_ID, field->id) ||
+ nla_put_u8(skb, DEVLINK_ATTR_DPIPE_HEADER_GLOBAL, header->global))
+ goto nla_put_failure;
+
+ nla_nest_end(skb, action_attr);
+ return 0;
+
+nla_put_failure:
+ nla_nest_cancel(skb, action_attr);
+ return -EMSGSIZE;
+}
+EXPORT_SYMBOL_GPL(devlink_dpipe_action_put);
+
+static int devlink_dpipe_actions_put(struct devlink_dpipe_table *table,
+ struct sk_buff *skb)
+{
+ struct nlattr *actions_attr;
+
+ actions_attr = nla_nest_start_noflag(skb,
+ DEVLINK_ATTR_DPIPE_TABLE_ACTIONS);
+ if (!actions_attr)
+ return -EMSGSIZE;
+
+ if (table->table_ops->actions_dump(table->priv, skb))
+ goto nla_put_failure;
+
+ nla_nest_end(skb, actions_attr);
+ return 0;
+
+nla_put_failure:
+ nla_nest_cancel(skb, actions_attr);
+ return -EMSGSIZE;
+}
+
+static int devlink_dpipe_table_put(struct sk_buff *skb,
+ struct devlink_dpipe_table *table)
+{
+ struct nlattr *table_attr;
+ u64 table_size;
+
+ table_size = table->table_ops->size_get(table->priv);
+ table_attr = nla_nest_start_noflag(skb, DEVLINK_ATTR_DPIPE_TABLE);
+ if (!table_attr)
+ return -EMSGSIZE;
+
+ if (nla_put_string(skb, DEVLINK_ATTR_DPIPE_TABLE_NAME, table->name) ||
+ nla_put_u64_64bit(skb, DEVLINK_ATTR_DPIPE_TABLE_SIZE, table_size,
+ DEVLINK_ATTR_PAD))
+ goto nla_put_failure;
+ if (nla_put_u8(skb, DEVLINK_ATTR_DPIPE_TABLE_COUNTERS_ENABLED,
+ table->counters_enabled))
+ goto nla_put_failure;
+
+ if (table->resource_valid) {
+ if (nla_put_u64_64bit(skb, DEVLINK_ATTR_DPIPE_TABLE_RESOURCE_ID,
+ table->resource_id, DEVLINK_ATTR_PAD) ||
+ nla_put_u64_64bit(skb, DEVLINK_ATTR_DPIPE_TABLE_RESOURCE_UNITS,
+ table->resource_units, DEVLINK_ATTR_PAD))
+ goto nla_put_failure;
+ }
+ if (devlink_dpipe_matches_put(table, skb))
+ goto nla_put_failure;
+
+ if (devlink_dpipe_actions_put(table, skb))
+ goto nla_put_failure;
+
+ nla_nest_end(skb, table_attr);
+ return 0;
+
+nla_put_failure:
+ nla_nest_cancel(skb, table_attr);
+ return -EMSGSIZE;
+}
+
+static int devlink_dpipe_send_and_alloc_skb(struct sk_buff **pskb,
+ struct genl_info *info)
+{
+ int err;
+
+ if (*pskb) {
+ err = genlmsg_reply(*pskb, info);
+ if (err)
+ return err;
+ }
+ *pskb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_KERNEL);
+ if (!*pskb)
+ return -ENOMEM;
+ return 0;
+}
+
+static int devlink_dpipe_tables_fill(struct genl_info *info,
+ enum devlink_command cmd, int flags,
+ struct list_head *dpipe_tables,
+ const char *table_name)
+{
+ struct devlink *devlink = info->user_ptr[0];
+ struct devlink_dpipe_table *table;
+ struct nlattr *tables_attr;
+ struct sk_buff *skb = NULL;
+ struct nlmsghdr *nlh;
+ bool incomplete;
+ void *hdr;
+ int i;
+ int err;
+
+ table = list_first_entry(dpipe_tables,
+ struct devlink_dpipe_table, list);
+start_again:
+ err = devlink_dpipe_send_and_alloc_skb(&skb, info);
+ if (err)
+ return err;
+
+ hdr = genlmsg_put(skb, info->snd_portid, info->snd_seq,
+ &devlink_nl_family, NLM_F_MULTI, cmd);
+ if (!hdr) {
+ nlmsg_free(skb);
+ return -EMSGSIZE;
+ }
+
+ if (devlink_nl_put_handle(skb, devlink))
+ goto nla_put_failure;
+ tables_attr = nla_nest_start_noflag(skb, DEVLINK_ATTR_DPIPE_TABLES);
+ if (!tables_attr)
+ goto nla_put_failure;
+
+ i = 0;
+ incomplete = false;
+ list_for_each_entry_from(table, dpipe_tables, list) {
+ if (!table_name) {
+ err = devlink_dpipe_table_put(skb, table);
+ if (err) {
+ if (!i)
+ goto err_table_put;
+ incomplete = true;
+ break;
+ }
+ } else {
+ if (!strcmp(table->name, table_name)) {
+ err = devlink_dpipe_table_put(skb, table);
+ if (err)
+ break;
+ }
+ }
+ i++;
+ }
+
+ nla_nest_end(skb, tables_attr);
+ genlmsg_end(skb, hdr);
+ if (incomplete)
+ goto start_again;
+
+send_done:
+ nlh = nlmsg_put(skb, info->snd_portid, info->snd_seq,
+ NLMSG_DONE, 0, flags | NLM_F_MULTI);
+ if (!nlh) {
+ err = devlink_dpipe_send_and_alloc_skb(&skb, info);
+ if (err)
+ return err;
+ goto send_done;
+ }
+
+ return genlmsg_reply(skb, info);
+
+nla_put_failure:
+ err = -EMSGSIZE;
+err_table_put:
+ nlmsg_free(skb);
+ return err;
+}
+
+static int devlink_nl_cmd_dpipe_table_get(struct sk_buff *skb,
+ struct genl_info *info)
+{
+ struct devlink *devlink = info->user_ptr[0];
+ const char *table_name = NULL;
+
+ if (info->attrs[DEVLINK_ATTR_DPIPE_TABLE_NAME])
+ table_name = nla_data(info->attrs[DEVLINK_ATTR_DPIPE_TABLE_NAME]);
+
+ return devlink_dpipe_tables_fill(info, DEVLINK_CMD_DPIPE_TABLE_GET, 0,
+ &devlink->dpipe_table_list,
+ table_name);
+}
+
+static int devlink_dpipe_value_put(struct sk_buff *skb,
+ struct devlink_dpipe_value *value)
+{
+ if (nla_put(skb, DEVLINK_ATTR_DPIPE_VALUE,
+ value->value_size, value->value))
+ return -EMSGSIZE;
+ if (value->mask)
+ if (nla_put(skb, DEVLINK_ATTR_DPIPE_VALUE_MASK,
+ value->value_size, value->mask))
+ return -EMSGSIZE;
+ if (value->mapping_valid)
+ if (nla_put_u32(skb, DEVLINK_ATTR_DPIPE_VALUE_MAPPING,
+ value->mapping_value))
+ return -EMSGSIZE;
+ return 0;
+}
+
+static int devlink_dpipe_action_value_put(struct sk_buff *skb,
+ struct devlink_dpipe_value *value)
+{
+ if (!value->action)
+ return -EINVAL;
+ if (devlink_dpipe_action_put(skb, value->action))
+ return -EMSGSIZE;
+ if (devlink_dpipe_value_put(skb, value))
+ return -EMSGSIZE;
+ return 0;
+}
+
+static int devlink_dpipe_action_values_put(struct sk_buff *skb,
+ struct devlink_dpipe_value *values,
+ unsigned int values_count)
+{
+ struct nlattr *action_attr;
+ int i;
+ int err;
+
+ for (i = 0; i < values_count; i++) {
+ action_attr = nla_nest_start_noflag(skb,
+ DEVLINK_ATTR_DPIPE_ACTION_VALUE);
+ if (!action_attr)
+ return -EMSGSIZE;
+ err = devlink_dpipe_action_value_put(skb, &values[i]);
+ if (err)
+ goto err_action_value_put;
+ nla_nest_end(skb, action_attr);
+ }
+ return 0;
+
+err_action_value_put:
+ nla_nest_cancel(skb, action_attr);
+ return err;
+}
+
+static int devlink_dpipe_match_value_put(struct sk_buff *skb,
+ struct devlink_dpipe_value *value)
+{
+ if (!value->match)
+ return -EINVAL;
+ if (devlink_dpipe_match_put(skb, value->match))
+ return -EMSGSIZE;
+ if (devlink_dpipe_value_put(skb, value))
+ return -EMSGSIZE;
+ return 0;
+}
+
+static int devlink_dpipe_match_values_put(struct sk_buff *skb,
+ struct devlink_dpipe_value *values,
+ unsigned int values_count)
+{
+ struct nlattr *match_attr;
+ int i;
+ int err;
+
+ for (i = 0; i < values_count; i++) {
+ match_attr = nla_nest_start_noflag(skb,
+ DEVLINK_ATTR_DPIPE_MATCH_VALUE);
+ if (!match_attr)
+ return -EMSGSIZE;
+ err = devlink_dpipe_match_value_put(skb, &values[i]);
+ if (err)
+ goto err_match_value_put;
+ nla_nest_end(skb, match_attr);
+ }
+ return 0;
+
+err_match_value_put:
+ nla_nest_cancel(skb, match_attr);
+ return err;
+}
+
+static int devlink_dpipe_entry_put(struct sk_buff *skb,
+ struct devlink_dpipe_entry *entry)
+{
+ struct nlattr *entry_attr, *matches_attr, *actions_attr;
+ int err;
+
+ entry_attr = nla_nest_start_noflag(skb, DEVLINK_ATTR_DPIPE_ENTRY);
+ if (!entry_attr)
+ return -EMSGSIZE;
+
+ if (nla_put_u64_64bit(skb, DEVLINK_ATTR_DPIPE_ENTRY_INDEX, entry->index,
+ DEVLINK_ATTR_PAD))
+ goto nla_put_failure;
+ if (entry->counter_valid)
+ if (nla_put_u64_64bit(skb, DEVLINK_ATTR_DPIPE_ENTRY_COUNTER,
+ entry->counter, DEVLINK_ATTR_PAD))
+ goto nla_put_failure;
+
+ matches_attr = nla_nest_start_noflag(skb,
+ DEVLINK_ATTR_DPIPE_ENTRY_MATCH_VALUES);
+ if (!matches_attr)
+ goto nla_put_failure;
+
+ err = devlink_dpipe_match_values_put(skb, entry->match_values,
+ entry->match_values_count);
+ if (err) {
+ nla_nest_cancel(skb, matches_attr);
+ goto err_match_values_put;
+ }
+ nla_nest_end(skb, matches_attr);
+
+ actions_attr = nla_nest_start_noflag(skb,
+ DEVLINK_ATTR_DPIPE_ENTRY_ACTION_VALUES);
+ if (!actions_attr)
+ goto nla_put_failure;
+
+ err = devlink_dpipe_action_values_put(skb, entry->action_values,
+ entry->action_values_count);
+ if (err) {
+ nla_nest_cancel(skb, actions_attr);
+ goto err_action_values_put;
+ }
+ nla_nest_end(skb, actions_attr);
+
+ nla_nest_end(skb, entry_attr);
+ return 0;
+
+nla_put_failure:
+ err = -EMSGSIZE;
+err_match_values_put:
+err_action_values_put:
+ nla_nest_cancel(skb, entry_attr);
+ return err;
+}
+
+static struct devlink_dpipe_table *
+devlink_dpipe_table_find(struct list_head *dpipe_tables,
+ const char *table_name, struct devlink *devlink)
+{
+ struct devlink_dpipe_table *table;
+ list_for_each_entry_rcu(table, dpipe_tables, list,
+ lockdep_is_held(&devlink->lock)) {
+ if (!strcmp(table->name, table_name))
+ return table;
+ }
+ return NULL;
+}
+
+int devlink_dpipe_entry_ctx_prepare(struct devlink_dpipe_dump_ctx *dump_ctx)
+{
+ struct devlink *devlink;
+ int err;
+
+ err = devlink_dpipe_send_and_alloc_skb(&dump_ctx->skb,
+ dump_ctx->info);
+ if (err)
+ return err;
+
+ dump_ctx->hdr = genlmsg_put(dump_ctx->skb,
+ dump_ctx->info->snd_portid,
+ dump_ctx->info->snd_seq,
+ &devlink_nl_family, NLM_F_MULTI,
+ dump_ctx->cmd);
+ if (!dump_ctx->hdr)
+ goto nla_put_failure;
+
+ devlink = dump_ctx->info->user_ptr[0];
+ if (devlink_nl_put_handle(dump_ctx->skb, devlink))
+ goto nla_put_failure;
+ dump_ctx->nest = nla_nest_start_noflag(dump_ctx->skb,
+ DEVLINK_ATTR_DPIPE_ENTRIES);
+ if (!dump_ctx->nest)
+ goto nla_put_failure;
+ return 0;
+
+nla_put_failure:
+ nlmsg_free(dump_ctx->skb);
+ return -EMSGSIZE;
+}
+EXPORT_SYMBOL_GPL(devlink_dpipe_entry_ctx_prepare);
+
+int devlink_dpipe_entry_ctx_append(struct devlink_dpipe_dump_ctx *dump_ctx,
+ struct devlink_dpipe_entry *entry)
+{
+ return devlink_dpipe_entry_put(dump_ctx->skb, entry);
+}
+EXPORT_SYMBOL_GPL(devlink_dpipe_entry_ctx_append);
+
+int devlink_dpipe_entry_ctx_close(struct devlink_dpipe_dump_ctx *dump_ctx)
+{
+ nla_nest_end(dump_ctx->skb, dump_ctx->nest);
+ genlmsg_end(dump_ctx->skb, dump_ctx->hdr);
+ return 0;
+}
+EXPORT_SYMBOL_GPL(devlink_dpipe_entry_ctx_close);
+
+void devlink_dpipe_entry_clear(struct devlink_dpipe_entry *entry)
+
+{
+ unsigned int value_count, value_index;
+ struct devlink_dpipe_value *value;
+
+ value = entry->action_values;
+ value_count = entry->action_values_count;
+ for (value_index = 0; value_index < value_count; value_index++) {
+ kfree(value[value_index].value);
+ kfree(value[value_index].mask);
+ }
+
+ value = entry->match_values;
+ value_count = entry->match_values_count;
+ for (value_index = 0; value_index < value_count; value_index++) {
+ kfree(value[value_index].value);
+ kfree(value[value_index].mask);
+ }
+}
+EXPORT_SYMBOL_GPL(devlink_dpipe_entry_clear);
+
+static int devlink_dpipe_entries_fill(struct genl_info *info,
+ enum devlink_command cmd, int flags,
+ struct devlink_dpipe_table *table)
+{
+ struct devlink_dpipe_dump_ctx dump_ctx;
+ struct nlmsghdr *nlh;
+ int err;
+
+ dump_ctx.skb = NULL;
+ dump_ctx.cmd = cmd;
+ dump_ctx.info = info;
+
+ err = table->table_ops->entries_dump(table->priv,
+ table->counters_enabled,
+ &dump_ctx);
+ if (err)
+ return err;
+
+send_done:
+ nlh = nlmsg_put(dump_ctx.skb, info->snd_portid, info->snd_seq,
+ NLMSG_DONE, 0, flags | NLM_F_MULTI);
+ if (!nlh) {
+ err = devlink_dpipe_send_and_alloc_skb(&dump_ctx.skb, info);
+ if (err)
+ return err;
+ goto send_done;
+ }
+ return genlmsg_reply(dump_ctx.skb, info);
+}
+
+static int devlink_nl_cmd_dpipe_entries_get(struct sk_buff *skb,
+ struct genl_info *info)
+{
+ struct devlink *devlink = info->user_ptr[0];
+ struct devlink_dpipe_table *table;
+ const char *table_name;
+
+ if (GENL_REQ_ATTR_CHECK(info, DEVLINK_ATTR_DPIPE_TABLE_NAME))
+ return -EINVAL;
+
+ table_name = nla_data(info->attrs[DEVLINK_ATTR_DPIPE_TABLE_NAME]);
+ table = devlink_dpipe_table_find(&devlink->dpipe_table_list,
+ table_name, devlink);
+ if (!table)
+ return -EINVAL;
+
+ if (!table->table_ops->entries_dump)
+ return -EINVAL;
+
+ return devlink_dpipe_entries_fill(info, DEVLINK_CMD_DPIPE_ENTRIES_GET,
+ 0, table);
+}
+
+static int devlink_dpipe_fields_put(struct sk_buff *skb,
+ const struct devlink_dpipe_header *header)
+{
+ struct devlink_dpipe_field *field;
+ struct nlattr *field_attr;
+ int i;
+
+ for (i = 0; i < header->fields_count; i++) {
+ field = &header->fields[i];
+ field_attr = nla_nest_start_noflag(skb,
+ DEVLINK_ATTR_DPIPE_FIELD);
+ if (!field_attr)
+ return -EMSGSIZE;
+ if (nla_put_string(skb, DEVLINK_ATTR_DPIPE_FIELD_NAME, field->name) ||
+ nla_put_u32(skb, DEVLINK_ATTR_DPIPE_FIELD_ID, field->id) ||
+ nla_put_u32(skb, DEVLINK_ATTR_DPIPE_FIELD_BITWIDTH, field->bitwidth) ||
+ nla_put_u32(skb, DEVLINK_ATTR_DPIPE_FIELD_MAPPING_TYPE, field->mapping_type))
+ goto nla_put_failure;
+ nla_nest_end(skb, field_attr);
+ }
+ return 0;
+
+nla_put_failure:
+ nla_nest_cancel(skb, field_attr);
+ return -EMSGSIZE;
+}
+
+static int devlink_dpipe_header_put(struct sk_buff *skb,
+ struct devlink_dpipe_header *header)
+{
+ struct nlattr *fields_attr, *header_attr;
+ int err;
+
+ header_attr = nla_nest_start_noflag(skb, DEVLINK_ATTR_DPIPE_HEADER);
+ if (!header_attr)
+ return -EMSGSIZE;
+
+ if (nla_put_string(skb, DEVLINK_ATTR_DPIPE_HEADER_NAME, header->name) ||
+ nla_put_u32(skb, DEVLINK_ATTR_DPIPE_HEADER_ID, header->id) ||
+ nla_put_u8(skb, DEVLINK_ATTR_DPIPE_HEADER_GLOBAL, header->global))
+ goto nla_put_failure;
+
+ fields_attr = nla_nest_start_noflag(skb,
+ DEVLINK_ATTR_DPIPE_HEADER_FIELDS);
+ if (!fields_attr)
+ goto nla_put_failure;
+
+ err = devlink_dpipe_fields_put(skb, header);
+ if (err) {
+ nla_nest_cancel(skb, fields_attr);
+ goto nla_put_failure;
+ }
+ nla_nest_end(skb, fields_attr);
+ nla_nest_end(skb, header_attr);
+ return 0;
+
+nla_put_failure:
+ err = -EMSGSIZE;
+ nla_nest_cancel(skb, header_attr);
+ return err;
+}
+
+static int devlink_dpipe_headers_fill(struct genl_info *info,
+ enum devlink_command cmd, int flags,
+ struct devlink_dpipe_headers *
+ dpipe_headers)
+{
+ struct devlink *devlink = info->user_ptr[0];
+ struct nlattr *headers_attr;
+ struct sk_buff *skb = NULL;
+ struct nlmsghdr *nlh;
+ void *hdr;
+ int i, j;
+ int err;
+
+ i = 0;
+start_again:
+ err = devlink_dpipe_send_and_alloc_skb(&skb, info);
+ if (err)
+ return err;
+
+ hdr = genlmsg_put(skb, info->snd_portid, info->snd_seq,
+ &devlink_nl_family, NLM_F_MULTI, cmd);
+ if (!hdr) {
+ nlmsg_free(skb);
+ return -EMSGSIZE;
+ }
+
+ if (devlink_nl_put_handle(skb, devlink))
+ goto nla_put_failure;
+ headers_attr = nla_nest_start_noflag(skb, DEVLINK_ATTR_DPIPE_HEADERS);
+ if (!headers_attr)
+ goto nla_put_failure;
+
+ j = 0;
+ for (; i < dpipe_headers->headers_count; i++) {
+ err = devlink_dpipe_header_put(skb, dpipe_headers->headers[i]);
+ if (err) {
+ if (!j)
+ goto err_table_put;
+ break;
+ }
+ j++;
+ }
+ nla_nest_end(skb, headers_attr);
+ genlmsg_end(skb, hdr);
+ if (i != dpipe_headers->headers_count)
+ goto start_again;
+
+send_done:
+ nlh = nlmsg_put(skb, info->snd_portid, info->snd_seq,
+ NLMSG_DONE, 0, flags | NLM_F_MULTI);
+ if (!nlh) {
+ err = devlink_dpipe_send_and_alloc_skb(&skb, info);
+ if (err)
+ return err;
+ goto send_done;
+ }
+ return genlmsg_reply(skb, info);
+
+nla_put_failure:
+ err = -EMSGSIZE;
+err_table_put:
+ nlmsg_free(skb);
+ return err;
+}
+
+static int devlink_nl_cmd_dpipe_headers_get(struct sk_buff *skb,
+ struct genl_info *info)
+{
+ struct devlink *devlink = info->user_ptr[0];
+
+ if (!devlink->dpipe_headers)
+ return -EOPNOTSUPP;
+ return devlink_dpipe_headers_fill(info, DEVLINK_CMD_DPIPE_HEADERS_GET,
+ 0, devlink->dpipe_headers);
+}
+
+static int devlink_dpipe_table_counters_set(struct devlink *devlink,
+ const char *table_name,
+ bool enable)
+{
+ struct devlink_dpipe_table *table;
+
+ table = devlink_dpipe_table_find(&devlink->dpipe_table_list,
+ table_name, devlink);
+ if (!table)
+ return -EINVAL;
+
+ if (table->counter_control_extern)
+ return -EOPNOTSUPP;
+
+ if (!(table->counters_enabled ^ enable))
+ return 0;
+
+ table->counters_enabled = enable;
+ if (table->table_ops->counters_set_update)
+ table->table_ops->counters_set_update(table->priv, enable);
+ return 0;
+}
+
+static int devlink_nl_cmd_dpipe_table_counters_set(struct sk_buff *skb,
+ struct genl_info *info)
+{
+ struct devlink *devlink = info->user_ptr[0];
+ const char *table_name;
+ bool counters_enable;
+
+ if (GENL_REQ_ATTR_CHECK(info, DEVLINK_ATTR_DPIPE_TABLE_NAME) ||
+ GENL_REQ_ATTR_CHECK(info,
+ DEVLINK_ATTR_DPIPE_TABLE_COUNTERS_ENABLED))
+ return -EINVAL;
+
+ table_name = nla_data(info->attrs[DEVLINK_ATTR_DPIPE_TABLE_NAME]);
+ counters_enable = !!nla_get_u8(info->attrs[DEVLINK_ATTR_DPIPE_TABLE_COUNTERS_ENABLED]);
+
+ return devlink_dpipe_table_counters_set(devlink, table_name,
+ counters_enable);
+}
+
+static struct devlink_resource *
+devlink_resource_find(struct devlink *devlink,
+ struct devlink_resource *resource, u64 resource_id)
+{
+ struct list_head *resource_list;
+
+ if (resource)
+ resource_list = &resource->resource_list;
+ else
+ resource_list = &devlink->resource_list;
+
+ list_for_each_entry(resource, resource_list, list) {
+ struct devlink_resource *child_resource;
+
+ if (resource->id == resource_id)
+ return resource;
+
+ child_resource = devlink_resource_find(devlink, resource,
+ resource_id);
+ if (child_resource)
+ return child_resource;
+ }
+ return NULL;
+}
+
+static void
+devlink_resource_validate_children(struct devlink_resource *resource)
+{
+ struct devlink_resource *child_resource;
+ bool size_valid = true;
+ u64 parts_size = 0;
+
+ if (list_empty(&resource->resource_list))
+ goto out;
+
+ list_for_each_entry(child_resource, &resource->resource_list, list)
+ parts_size += child_resource->size_new;
+
+ if (parts_size > resource->size_new)
+ size_valid = false;
+out:
+ resource->size_valid = size_valid;
+}
+
+static int
+devlink_resource_validate_size(struct devlink_resource *resource, u64 size,
+ struct netlink_ext_ack *extack)
+{
+ u64 reminder;
+ int err = 0;
+
+ if (size > resource->size_params.size_max) {
+ NL_SET_ERR_MSG_MOD(extack, "Size larger than maximum");
+ err = -EINVAL;
+ }
+
+ if (size < resource->size_params.size_min) {
+ NL_SET_ERR_MSG_MOD(extack, "Size smaller than minimum");
+ err = -EINVAL;
+ }
+
+ div64_u64_rem(size, resource->size_params.size_granularity, &reminder);
+ if (reminder) {
+ NL_SET_ERR_MSG_MOD(extack, "Wrong granularity");
+ err = -EINVAL;
+ }
+
+ return err;
+}
+
+static int devlink_nl_cmd_resource_set(struct sk_buff *skb,
+ struct genl_info *info)
+{
+ struct devlink *devlink = info->user_ptr[0];
+ struct devlink_resource *resource;
+ u64 resource_id;
+ u64 size;
+ int err;
+
+ if (GENL_REQ_ATTR_CHECK(info, DEVLINK_ATTR_RESOURCE_ID) ||
+ GENL_REQ_ATTR_CHECK(info, DEVLINK_ATTR_RESOURCE_SIZE))
+ return -EINVAL;
+ resource_id = nla_get_u64(info->attrs[DEVLINK_ATTR_RESOURCE_ID]);
+
+ resource = devlink_resource_find(devlink, NULL, resource_id);
+ if (!resource)
+ return -EINVAL;
+
+ size = nla_get_u64(info->attrs[DEVLINK_ATTR_RESOURCE_SIZE]);
+ err = devlink_resource_validate_size(resource, size, info->extack);
+ if (err)
+ return err;
+
+ resource->size_new = size;
+ devlink_resource_validate_children(resource);
+ if (resource->parent)
+ devlink_resource_validate_children(resource->parent);
+ return 0;
+}
+
+static int
+devlink_resource_size_params_put(struct devlink_resource *resource,
+ struct sk_buff *skb)
+{
+ struct devlink_resource_size_params *size_params;
+
+ size_params = &resource->size_params;
+ if (nla_put_u64_64bit(skb, DEVLINK_ATTR_RESOURCE_SIZE_GRAN,
+ size_params->size_granularity, DEVLINK_ATTR_PAD) ||
+ nla_put_u64_64bit(skb, DEVLINK_ATTR_RESOURCE_SIZE_MAX,
+ size_params->size_max, DEVLINK_ATTR_PAD) ||
+ nla_put_u64_64bit(skb, DEVLINK_ATTR_RESOURCE_SIZE_MIN,
+ size_params->size_min, DEVLINK_ATTR_PAD) ||
+ nla_put_u8(skb, DEVLINK_ATTR_RESOURCE_UNIT, size_params->unit))
+ return -EMSGSIZE;
+ return 0;
+}
+
+static int devlink_resource_occ_put(struct devlink_resource *resource,
+ struct sk_buff *skb)
+{
+ if (!resource->occ_get)
+ return 0;
+ return nla_put_u64_64bit(skb, DEVLINK_ATTR_RESOURCE_OCC,
+ resource->occ_get(resource->occ_get_priv),
+ DEVLINK_ATTR_PAD);
+}
+
+static int devlink_resource_put(struct devlink *devlink, struct sk_buff *skb,
+ struct devlink_resource *resource)
+{
+ struct devlink_resource *child_resource;
+ struct nlattr *child_resource_attr;
+ struct nlattr *resource_attr;
+
+ resource_attr = nla_nest_start_noflag(skb, DEVLINK_ATTR_RESOURCE);
+ if (!resource_attr)
+ return -EMSGSIZE;
+
+ if (nla_put_string(skb, DEVLINK_ATTR_RESOURCE_NAME, resource->name) ||
+ nla_put_u64_64bit(skb, DEVLINK_ATTR_RESOURCE_SIZE, resource->size,
+ DEVLINK_ATTR_PAD) ||
+ nla_put_u64_64bit(skb, DEVLINK_ATTR_RESOURCE_ID, resource->id,
+ DEVLINK_ATTR_PAD))
+ goto nla_put_failure;
+ if (resource->size != resource->size_new)
+ nla_put_u64_64bit(skb, DEVLINK_ATTR_RESOURCE_SIZE_NEW,
+ resource->size_new, DEVLINK_ATTR_PAD);
+ if (devlink_resource_occ_put(resource, skb))
+ goto nla_put_failure;
+ if (devlink_resource_size_params_put(resource, skb))
+ goto nla_put_failure;
+ if (list_empty(&resource->resource_list))
+ goto out;
+
+ if (nla_put_u8(skb, DEVLINK_ATTR_RESOURCE_SIZE_VALID,
+ resource->size_valid))
+ goto nla_put_failure;
+
+ child_resource_attr = nla_nest_start_noflag(skb,
+ DEVLINK_ATTR_RESOURCE_LIST);
+ if (!child_resource_attr)
+ goto nla_put_failure;
+
+ list_for_each_entry(child_resource, &resource->resource_list, list) {
+ if (devlink_resource_put(devlink, skb, child_resource))
+ goto resource_put_failure;
+ }
+
+ nla_nest_end(skb, child_resource_attr);
+out:
+ nla_nest_end(skb, resource_attr);
+ return 0;
+
+resource_put_failure:
+ nla_nest_cancel(skb, child_resource_attr);
+nla_put_failure:
+ nla_nest_cancel(skb, resource_attr);
+ return -EMSGSIZE;
+}
+
+static int devlink_resource_fill(struct genl_info *info,
+ enum devlink_command cmd, int flags)
+{
+ struct devlink *devlink = info->user_ptr[0];
+ struct devlink_resource *resource;
+ struct nlattr *resources_attr;
+ struct sk_buff *skb = NULL;
+ struct nlmsghdr *nlh;
+ bool incomplete;
+ void *hdr;
+ int i;
+ int err;
+
+ resource = list_first_entry(&devlink->resource_list,
+ struct devlink_resource, list);
+start_again:
+ err = devlink_dpipe_send_and_alloc_skb(&skb, info);
+ if (err)
+ return err;
+
+ hdr = genlmsg_put(skb, info->snd_portid, info->snd_seq,
+ &devlink_nl_family, NLM_F_MULTI, cmd);
+ if (!hdr) {
+ nlmsg_free(skb);
+ return -EMSGSIZE;
+ }
+
+ if (devlink_nl_put_handle(skb, devlink))
+ goto nla_put_failure;
+
+ resources_attr = nla_nest_start_noflag(skb,
+ DEVLINK_ATTR_RESOURCE_LIST);
+ if (!resources_attr)
+ goto nla_put_failure;
+
+ incomplete = false;
+ i = 0;
+ list_for_each_entry_from(resource, &devlink->resource_list, list) {
+ err = devlink_resource_put(devlink, skb, resource);
+ if (err) {
+ if (!i)
+ goto err_resource_put;
+ incomplete = true;
+ break;
+ }
+ i++;
+ }
+ nla_nest_end(skb, resources_attr);
+ genlmsg_end(skb, hdr);
+ if (incomplete)
+ goto start_again;
+send_done:
+ nlh = nlmsg_put(skb, info->snd_portid, info->snd_seq,
+ NLMSG_DONE, 0, flags | NLM_F_MULTI);
+ if (!nlh) {
+ err = devlink_dpipe_send_and_alloc_skb(&skb, info);
+ if (err)
+ return err;
+ goto send_done;
+ }
+ return genlmsg_reply(skb, info);
+
+nla_put_failure:
+ err = -EMSGSIZE;
+err_resource_put:
+ nlmsg_free(skb);
+ return err;
+}
+
+static int devlink_nl_cmd_resource_dump(struct sk_buff *skb,
+ struct genl_info *info)
+{
+ struct devlink *devlink = info->user_ptr[0];
+
+ if (list_empty(&devlink->resource_list))
+ return -EOPNOTSUPP;
+
+ return devlink_resource_fill(info, DEVLINK_CMD_RESOURCE_DUMP, 0);
+}
+
+static int
+devlink_resources_validate(struct devlink *devlink,
+ struct devlink_resource *resource,
+ struct genl_info *info)
+{
+ struct list_head *resource_list;
+ int err = 0;
+
+ if (resource)
+ resource_list = &resource->resource_list;
+ else
+ resource_list = &devlink->resource_list;
+
+ list_for_each_entry(resource, resource_list, list) {
+ if (!resource->size_valid)
+ return -EINVAL;
+ err = devlink_resources_validate(devlink, resource, info);
+ if (err)
+ return err;
+ }
+ return err;
+}
+
+static struct net *devlink_netns_get(struct sk_buff *skb,
+ struct genl_info *info)
+{
+ struct nlattr *netns_pid_attr = info->attrs[DEVLINK_ATTR_NETNS_PID];
+ struct nlattr *netns_fd_attr = info->attrs[DEVLINK_ATTR_NETNS_FD];
+ struct nlattr *netns_id_attr = info->attrs[DEVLINK_ATTR_NETNS_ID];
+ struct net *net;
+
+ if (!!netns_pid_attr + !!netns_fd_attr + !!netns_id_attr > 1) {
+ NL_SET_ERR_MSG_MOD(info->extack, "multiple netns identifying attributes specified");
+ return ERR_PTR(-EINVAL);
+ }
+
+ if (netns_pid_attr) {
+ net = get_net_ns_by_pid(nla_get_u32(netns_pid_attr));
+ } else if (netns_fd_attr) {
+ net = get_net_ns_by_fd(nla_get_u32(netns_fd_attr));
+ } else if (netns_id_attr) {
+ net = get_net_ns_by_id(sock_net(skb->sk),
+ nla_get_u32(netns_id_attr));
+ if (!net)
+ net = ERR_PTR(-EINVAL);
+ } else {
+ WARN_ON(1);
+ net = ERR_PTR(-EINVAL);
+ }
+ if (IS_ERR(net)) {
+ NL_SET_ERR_MSG_MOD(info->extack, "Unknown network namespace");
+ return ERR_PTR(-EINVAL);
+ }
+ if (!netlink_ns_capable(skb, net->user_ns, CAP_NET_ADMIN)) {
+ put_net(net);
+ return ERR_PTR(-EPERM);
+ }
+ return net;
+}
+
+static void devlink_param_notify(struct devlink *devlink,
+ unsigned int port_index,
+ struct devlink_param_item *param_item,
+ enum devlink_command cmd);
+
+static void devlink_ns_change_notify(struct devlink *devlink,
+ struct net *dest_net, struct net *curr_net,
+ bool new)
+{
+ struct devlink_param_item *param_item;
+ enum devlink_command cmd;
+
+ /* Userspace needs to be notified about devlink objects
+ * removed from original and entering new network namespace.
+ * The rest of the devlink objects are re-created during
+ * reload process so the notifications are generated separatelly.
+ */
+
+ if (!dest_net || net_eq(dest_net, curr_net))
+ return;
+
+ if (new)
+ devlink_notify(devlink, DEVLINK_CMD_NEW);
+
+ cmd = new ? DEVLINK_CMD_PARAM_NEW : DEVLINK_CMD_PARAM_DEL;
+ list_for_each_entry(param_item, &devlink->param_list, list)
+ devlink_param_notify(devlink, 0, param_item, cmd);
+
+ if (!new)
+ devlink_notify(devlink, DEVLINK_CMD_DEL);
+}
+
+static bool devlink_reload_supported(const struct devlink_ops *ops)
+{
+ return ops->reload_down && ops->reload_up;
+}
+
+static void devlink_reload_failed_set(struct devlink *devlink,
+ bool reload_failed)
+{
+ if (devlink->reload_failed == reload_failed)
+ return;
+ devlink->reload_failed = reload_failed;
+ devlink_notify(devlink, DEVLINK_CMD_NEW);
+}
+
+bool devlink_is_reload_failed(const struct devlink *devlink)
+{
+ return devlink->reload_failed;
+}
+EXPORT_SYMBOL_GPL(devlink_is_reload_failed);
+
+static void
+__devlink_reload_stats_update(struct devlink *devlink, u32 *reload_stats,
+ enum devlink_reload_limit limit, u32 actions_performed)
+{
+ unsigned long actions = actions_performed;
+ int stat_idx;
+ int action;
+
+ for_each_set_bit(action, &actions, __DEVLINK_RELOAD_ACTION_MAX) {
+ stat_idx = limit * __DEVLINK_RELOAD_ACTION_MAX + action;
+ reload_stats[stat_idx]++;
+ }
+ devlink_notify(devlink, DEVLINK_CMD_NEW);
+}
+
+static void
+devlink_reload_stats_update(struct devlink *devlink, enum devlink_reload_limit limit,
+ u32 actions_performed)
+{
+ __devlink_reload_stats_update(devlink, devlink->stats.reload_stats, limit,
+ actions_performed);
+}
+
+/**
+ * devlink_remote_reload_actions_performed - Update devlink on reload actions
+ * performed which are not a direct result of devlink reload call.
+ *
+ * This should be called by a driver after performing reload actions in case it was not
+ * a result of devlink reload call. For example fw_activate was performed as a result
+ * of devlink reload triggered fw_activate on another host.
+ * The motivation for this function is to keep data on reload actions performed on this
+ * function whether it was done due to direct devlink reload call or not.
+ *
+ * @devlink: devlink
+ * @limit: reload limit
+ * @actions_performed: bitmask of actions performed
+ */
+void devlink_remote_reload_actions_performed(struct devlink *devlink,
+ enum devlink_reload_limit limit,
+ u32 actions_performed)
+{
+ if (WARN_ON(!actions_performed ||
+ actions_performed & BIT(DEVLINK_RELOAD_ACTION_UNSPEC) ||
+ actions_performed >= BIT(__DEVLINK_RELOAD_ACTION_MAX) ||
+ limit > DEVLINK_RELOAD_LIMIT_MAX))
+ return;
+
+ __devlink_reload_stats_update(devlink, devlink->stats.remote_reload_stats, limit,
+ actions_performed);
+}
+EXPORT_SYMBOL_GPL(devlink_remote_reload_actions_performed);
+
+static int devlink_reload(struct devlink *devlink, struct net *dest_net,
+ enum devlink_reload_action action, enum devlink_reload_limit limit,
+ u32 *actions_performed, struct netlink_ext_ack *extack)
+{
+ u32 remote_reload_stats[DEVLINK_RELOAD_STATS_ARRAY_SIZE];
+ struct net *curr_net;
+ int err;
+
+ memcpy(remote_reload_stats, devlink->stats.remote_reload_stats,
+ sizeof(remote_reload_stats));
+
+ curr_net = devlink_net(devlink);
+ devlink_ns_change_notify(devlink, dest_net, curr_net, false);
+ err = devlink->ops->reload_down(devlink, !!dest_net, action, limit, extack);
+ if (err)
+ return err;
+
+ if (dest_net && !net_eq(dest_net, curr_net))
+ write_pnet(&devlink->_net, dest_net);
+
+ err = devlink->ops->reload_up(devlink, action, limit, actions_performed, extack);
+ devlink_reload_failed_set(devlink, !!err);
+ if (err)
+ return err;
+
+ devlink_ns_change_notify(devlink, dest_net, curr_net, true);
+ WARN_ON(!(*actions_performed & BIT(action)));
+ /* Catch driver on updating the remote action within devlink reload */
+ WARN_ON(memcmp(remote_reload_stats, devlink->stats.remote_reload_stats,
+ sizeof(remote_reload_stats)));
+ devlink_reload_stats_update(devlink, limit, *actions_performed);
+ return 0;
+}
+
+static int
+devlink_nl_reload_actions_performed_snd(struct devlink *devlink, u32 actions_performed,
+ enum devlink_command cmd, struct genl_info *info)
+{
+ struct sk_buff *msg;
+ void *hdr;
+
+ msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
+ if (!msg)
+ return -ENOMEM;
+
+ hdr = genlmsg_put(msg, info->snd_portid, info->snd_seq, &devlink_nl_family, 0, cmd);
+ if (!hdr)
+ goto free_msg;
+
+ if (devlink_nl_put_handle(msg, devlink))
+ goto nla_put_failure;
+
+ if (nla_put_bitfield32(msg, DEVLINK_ATTR_RELOAD_ACTIONS_PERFORMED, actions_performed,
+ actions_performed))
+ goto nla_put_failure;
+ genlmsg_end(msg, hdr);
+
+ return genlmsg_reply(msg, info);
+
+nla_put_failure:
+ genlmsg_cancel(msg, hdr);
+free_msg:
+ nlmsg_free(msg);
+ return -EMSGSIZE;
+}
+
+static int devlink_nl_cmd_reload(struct sk_buff *skb, struct genl_info *info)
+{
+ struct devlink *devlink = info->user_ptr[0];
+ enum devlink_reload_action action;
+ enum devlink_reload_limit limit;
+ struct net *dest_net = NULL;
+ u32 actions_performed;
+ int err;
+
+ if (!(devlink->features & DEVLINK_F_RELOAD))
+ return -EOPNOTSUPP;
+
+ err = devlink_resources_validate(devlink, NULL, info);
+ if (err) {
+ NL_SET_ERR_MSG_MOD(info->extack, "resources size validation failed");
+ return err;
+ }
+
+ if (info->attrs[DEVLINK_ATTR_RELOAD_ACTION])
+ action = nla_get_u8(info->attrs[DEVLINK_ATTR_RELOAD_ACTION]);
+ else
+ action = DEVLINK_RELOAD_ACTION_DRIVER_REINIT;
+
+ if (!devlink_reload_action_is_supported(devlink, action)) {
+ NL_SET_ERR_MSG_MOD(info->extack,
+ "Requested reload action is not supported by the driver");
+ return -EOPNOTSUPP;
+ }
+
+ limit = DEVLINK_RELOAD_LIMIT_UNSPEC;
+ if (info->attrs[DEVLINK_ATTR_RELOAD_LIMITS]) {
+ struct nla_bitfield32 limits;
+ u32 limits_selected;
+
+ limits = nla_get_bitfield32(info->attrs[DEVLINK_ATTR_RELOAD_LIMITS]);
+ limits_selected = limits.value & limits.selector;
+ if (!limits_selected) {
+ NL_SET_ERR_MSG_MOD(info->extack, "Invalid limit selected");
+ return -EINVAL;
+ }
+ for (limit = 0 ; limit <= DEVLINK_RELOAD_LIMIT_MAX ; limit++)
+ if (limits_selected & BIT(limit))
+ break;
+ /* UAPI enables multiselection, but currently it is not used */
+ if (limits_selected != BIT(limit)) {
+ NL_SET_ERR_MSG_MOD(info->extack,
+ "Multiselection of limit is not supported");
+ return -EOPNOTSUPP;
+ }
+ if (!devlink_reload_limit_is_supported(devlink, limit)) {
+ NL_SET_ERR_MSG_MOD(info->extack,
+ "Requested limit is not supported by the driver");
+ return -EOPNOTSUPP;
+ }
+ if (devlink_reload_combination_is_invalid(action, limit)) {
+ NL_SET_ERR_MSG_MOD(info->extack,
+ "Requested limit is invalid for this action");
+ return -EINVAL;
+ }
+ }
+ if (info->attrs[DEVLINK_ATTR_NETNS_PID] ||
+ info->attrs[DEVLINK_ATTR_NETNS_FD] ||
+ info->attrs[DEVLINK_ATTR_NETNS_ID]) {
+ dest_net = devlink_netns_get(skb, info);
+ if (IS_ERR(dest_net))
+ return PTR_ERR(dest_net);
+ }
+
+ err = devlink_reload(devlink, dest_net, action, limit, &actions_performed, info->extack);
+
+ if (dest_net)
+ put_net(dest_net);
+
+ if (err)
+ return err;
+ /* For backward compatibility generate reply only if attributes used by user */
+ if (!info->attrs[DEVLINK_ATTR_RELOAD_ACTION] && !info->attrs[DEVLINK_ATTR_RELOAD_LIMITS])
+ return 0;
+
+ return devlink_nl_reload_actions_performed_snd(devlink, actions_performed,
+ DEVLINK_CMD_RELOAD, info);
+}
+
+static int devlink_nl_flash_update_fill(struct sk_buff *msg,
+ struct devlink *devlink,
+ enum devlink_command cmd,
+ struct devlink_flash_notify *params)
+{
+ void *hdr;
+
+ hdr = genlmsg_put(msg, 0, 0, &devlink_nl_family, 0, cmd);
+ if (!hdr)
+ return -EMSGSIZE;
+
+ if (devlink_nl_put_handle(msg, devlink))
+ goto nla_put_failure;
+
+ if (cmd != DEVLINK_CMD_FLASH_UPDATE_STATUS)
+ goto out;
+
+ if (params->status_msg &&
+ nla_put_string(msg, DEVLINK_ATTR_FLASH_UPDATE_STATUS_MSG,
+ params->status_msg))
+ goto nla_put_failure;
+ if (params->component &&
+ nla_put_string(msg, DEVLINK_ATTR_FLASH_UPDATE_COMPONENT,
+ params->component))
+ goto nla_put_failure;
+ if (nla_put_u64_64bit(msg, DEVLINK_ATTR_FLASH_UPDATE_STATUS_DONE,
+ params->done, DEVLINK_ATTR_PAD))
+ goto nla_put_failure;
+ if (nla_put_u64_64bit(msg, DEVLINK_ATTR_FLASH_UPDATE_STATUS_TOTAL,
+ params->total, DEVLINK_ATTR_PAD))
+ goto nla_put_failure;
+ if (nla_put_u64_64bit(msg, DEVLINK_ATTR_FLASH_UPDATE_STATUS_TIMEOUT,
+ params->timeout, DEVLINK_ATTR_PAD))
+ goto nla_put_failure;
+
+out:
+ genlmsg_end(msg, hdr);
+ return 0;
+
+nla_put_failure:
+ genlmsg_cancel(msg, hdr);
+ return -EMSGSIZE;
+}
+
+static void __devlink_flash_update_notify(struct devlink *devlink,
+ enum devlink_command cmd,
+ struct devlink_flash_notify *params)
+{
+ struct sk_buff *msg;
+ int err;
+
+ WARN_ON(cmd != DEVLINK_CMD_FLASH_UPDATE &&
+ cmd != DEVLINK_CMD_FLASH_UPDATE_END &&
+ cmd != DEVLINK_CMD_FLASH_UPDATE_STATUS);
+
+ if (!xa_get_mark(&devlinks, devlink->index, DEVLINK_REGISTERED))
+ return;
+
+ msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
+ if (!msg)
+ return;
+
+ err = devlink_nl_flash_update_fill(msg, devlink, cmd, params);
+ if (err)
+ goto out_free_msg;
+
+ genlmsg_multicast_netns(&devlink_nl_family, devlink_net(devlink),
+ msg, 0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL);
+ return;
+
+out_free_msg:
+ nlmsg_free(msg);
+}
+
+static void devlink_flash_update_begin_notify(struct devlink *devlink)
+{
+ struct devlink_flash_notify params = {};
+
+ __devlink_flash_update_notify(devlink,
+ DEVLINK_CMD_FLASH_UPDATE,
+ &params);
+}
+
+static void devlink_flash_update_end_notify(struct devlink *devlink)
+{
+ struct devlink_flash_notify params = {};
+
+ __devlink_flash_update_notify(devlink,
+ DEVLINK_CMD_FLASH_UPDATE_END,
+ &params);
+}
+
+void devlink_flash_update_status_notify(struct devlink *devlink,
+ const char *status_msg,
+ const char *component,
+ unsigned long done,
+ unsigned long total)
+{
+ struct devlink_flash_notify params = {
+ .status_msg = status_msg,
+ .component = component,
+ .done = done,
+ .total = total,
+ };
+
+ __devlink_flash_update_notify(devlink,
+ DEVLINK_CMD_FLASH_UPDATE_STATUS,
+ &params);
+}
+EXPORT_SYMBOL_GPL(devlink_flash_update_status_notify);
+
+void devlink_flash_update_timeout_notify(struct devlink *devlink,
+ const char *status_msg,
+ const char *component,
+ unsigned long timeout)
+{
+ struct devlink_flash_notify params = {
+ .status_msg = status_msg,
+ .component = component,
+ .timeout = timeout,
+ };
+
+ __devlink_flash_update_notify(devlink,
+ DEVLINK_CMD_FLASH_UPDATE_STATUS,
+ &params);
+}
+EXPORT_SYMBOL_GPL(devlink_flash_update_timeout_notify);
+
+struct devlink_info_req {
+ struct sk_buff *msg;
+ void (*version_cb)(const char *version_name,
+ enum devlink_info_version_type version_type,
+ void *version_cb_priv);
+ void *version_cb_priv;
+};
+
+struct devlink_flash_component_lookup_ctx {
+ const char *lookup_name;
+ bool lookup_name_found;
+};
+
+static void
+devlink_flash_component_lookup_cb(const char *version_name,
+ enum devlink_info_version_type version_type,
+ void *version_cb_priv)
+{
+ struct devlink_flash_component_lookup_ctx *lookup_ctx = version_cb_priv;
+
+ if (version_type != DEVLINK_INFO_VERSION_TYPE_COMPONENT ||
+ lookup_ctx->lookup_name_found)
+ return;
+
+ lookup_ctx->lookup_name_found =
+ !strcmp(lookup_ctx->lookup_name, version_name);
+}
+
+static int devlink_flash_component_get(struct devlink *devlink,
+ struct nlattr *nla_component,
+ const char **p_component,
+ struct netlink_ext_ack *extack)
+{
+ struct devlink_flash_component_lookup_ctx lookup_ctx = {};
+ struct devlink_info_req req = {};
+ const char *component;
+ int ret;
+
+ if (!nla_component)
+ return 0;
+
+ component = nla_data(nla_component);
+
+ if (!devlink->ops->info_get) {
+ NL_SET_ERR_MSG_ATTR(extack, nla_component,
+ "component update is not supported by this device");
+ return -EOPNOTSUPP;
+ }
+
+ lookup_ctx.lookup_name = component;
+ req.version_cb = devlink_flash_component_lookup_cb;
+ req.version_cb_priv = &lookup_ctx;
+
+ ret = devlink->ops->info_get(devlink, &req, NULL);
+ if (ret)
+ return ret;
+
+ if (!lookup_ctx.lookup_name_found) {
+ NL_SET_ERR_MSG_ATTR(extack, nla_component,
+ "selected component is not supported by this device");
+ return -EINVAL;
+ }
+ *p_component = component;
+ return 0;
+}
+
+static int devlink_nl_cmd_flash_update(struct sk_buff *skb,
+ struct genl_info *info)
+{
+ struct nlattr *nla_overwrite_mask, *nla_file_name;
+ struct devlink_flash_update_params params = {};
+ struct devlink *devlink = info->user_ptr[0];
+ const char *file_name;
+ u32 supported_params;
+ int ret;
+
+ if (!devlink->ops->flash_update)
+ return -EOPNOTSUPP;
+
+ if (GENL_REQ_ATTR_CHECK(info, DEVLINK_ATTR_FLASH_UPDATE_FILE_NAME))
+ return -EINVAL;
+
+ ret = devlink_flash_component_get(devlink,
+ info->attrs[DEVLINK_ATTR_FLASH_UPDATE_COMPONENT],
+ &params.component, info->extack);
+ if (ret)
+ return ret;
+
+ supported_params = devlink->ops->supported_flash_update_params;
+
+ nla_overwrite_mask = info->attrs[DEVLINK_ATTR_FLASH_UPDATE_OVERWRITE_MASK];
+ if (nla_overwrite_mask) {
+ struct nla_bitfield32 sections;
+
+ if (!(supported_params & DEVLINK_SUPPORT_FLASH_UPDATE_OVERWRITE_MASK)) {
+ NL_SET_ERR_MSG_ATTR(info->extack, nla_overwrite_mask,
+ "overwrite settings are not supported by this device");
+ return -EOPNOTSUPP;
+ }
+ sections = nla_get_bitfield32(nla_overwrite_mask);
+ params.overwrite_mask = sections.value & sections.selector;
+ }
+
+ nla_file_name = info->attrs[DEVLINK_ATTR_FLASH_UPDATE_FILE_NAME];
+ file_name = nla_data(nla_file_name);
+ ret = request_firmware(&params.fw, file_name, devlink->dev);
+ if (ret) {
+ NL_SET_ERR_MSG_ATTR(info->extack, nla_file_name, "failed to locate the requested firmware file");
+ return ret;
+ }
+
+ devlink_flash_update_begin_notify(devlink);
+ ret = devlink->ops->flash_update(devlink, &params, info->extack);
+ devlink_flash_update_end_notify(devlink);
+
+ release_firmware(params.fw);
+
+ return ret;
+}
+
+static int
+devlink_nl_selftests_fill(struct sk_buff *msg, struct devlink *devlink,
+ u32 portid, u32 seq, int flags,
+ struct netlink_ext_ack *extack)
+{
+ struct nlattr *selftests;
+ void *hdr;
+ int err;
+ int i;
+
+ hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags,
+ DEVLINK_CMD_SELFTESTS_GET);
+ if (!hdr)
+ return -EMSGSIZE;
+
+ err = -EMSGSIZE;
+ if (devlink_nl_put_handle(msg, devlink))
+ goto err_cancel_msg;
+
+ selftests = nla_nest_start(msg, DEVLINK_ATTR_SELFTESTS);
+ if (!selftests)
+ goto err_cancel_msg;
+
+ for (i = DEVLINK_ATTR_SELFTEST_ID_UNSPEC + 1;
+ i <= DEVLINK_ATTR_SELFTEST_ID_MAX; i++) {
+ if (devlink->ops->selftest_check(devlink, i, extack)) {
+ err = nla_put_flag(msg, i);
+ if (err)
+ goto err_cancel_msg;
+ }
+ }
+
+ nla_nest_end(msg, selftests);
+ genlmsg_end(msg, hdr);
+ return 0;
+
+err_cancel_msg:
+ genlmsg_cancel(msg, hdr);
+ return err;
+}
+
+static int devlink_nl_cmd_selftests_get_doit(struct sk_buff *skb,
+ struct genl_info *info)
+{
+ struct devlink *devlink = info->user_ptr[0];
+ struct sk_buff *msg;
+ int err;
+
+ if (!devlink->ops->selftest_check)
+ return -EOPNOTSUPP;
+
+ msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
+ if (!msg)
+ return -ENOMEM;
+
+ err = devlink_nl_selftests_fill(msg, devlink, info->snd_portid,
+ info->snd_seq, 0, info->extack);
+ if (err) {
+ nlmsg_free(msg);
+ return err;
+ }
+
+ return genlmsg_reply(msg, info);
+}
+
+static int devlink_nl_cmd_selftests_get_dumpit(struct sk_buff *msg,
+ struct netlink_callback *cb)
+{
+ struct devlink *devlink;
+ int start = cb->args[0];
+ unsigned long index;
+ int idx = 0;
+ int err = 0;
+
+ devlinks_xa_for_each_registered_get(sock_net(msg->sk), index, devlink) {
+ if (idx < start || !devlink->ops->selftest_check)
+ goto inc;
+
+ devl_lock(devlink);
+ err = devlink_nl_selftests_fill(msg, devlink,
+ NETLINK_CB(cb->skb).portid,
+ cb->nlh->nlmsg_seq, NLM_F_MULTI,
+ cb->extack);
+ devl_unlock(devlink);
+ if (err) {
+ devlink_put(devlink);
+ break;
+ }
+inc:
+ idx++;
+ devlink_put(devlink);
+ }
+
+ if (err != -EMSGSIZE)
+ return err;
+
+ cb->args[0] = idx;
+ return msg->len;
+}
+
+static int devlink_selftest_result_put(struct sk_buff *skb, unsigned int id,
+ enum devlink_selftest_status test_status)
+{
+ struct nlattr *result_attr;
+
+ result_attr = nla_nest_start(skb, DEVLINK_ATTR_SELFTEST_RESULT);
+ if (!result_attr)
+ return -EMSGSIZE;
+
+ if (nla_put_u32(skb, DEVLINK_ATTR_SELFTEST_RESULT_ID, id) ||
+ nla_put_u8(skb, DEVLINK_ATTR_SELFTEST_RESULT_STATUS,
+ test_status))
+ goto nla_put_failure;
+
+ nla_nest_end(skb, result_attr);
+ return 0;
+
+nla_put_failure:
+ nla_nest_cancel(skb, result_attr);
+ return -EMSGSIZE;
+}
+
+static int devlink_nl_cmd_selftests_run(struct sk_buff *skb,
+ struct genl_info *info)
+{
+ struct nlattr *tb[DEVLINK_ATTR_SELFTEST_ID_MAX + 1];
+ struct devlink *devlink = info->user_ptr[0];
+ struct nlattr *attrs, *selftests;
+ struct sk_buff *msg;
+ void *hdr;
+ int err;
+ int i;
+
+ if (!devlink->ops->selftest_run || !devlink->ops->selftest_check)
+ return -EOPNOTSUPP;
+
+ if (GENL_REQ_ATTR_CHECK(info, DEVLINK_ATTR_SELFTESTS))
+ return -EINVAL;
+
+ attrs = info->attrs[DEVLINK_ATTR_SELFTESTS];
+
+ err = nla_parse_nested(tb, DEVLINK_ATTR_SELFTEST_ID_MAX, attrs,
+ devlink_selftest_nl_policy, info->extack);
+ if (err < 0)
+ return err;
+
+ msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
+ if (!msg)
+ return -ENOMEM;
+
+ err = -EMSGSIZE;
+ hdr = genlmsg_put(msg, info->snd_portid, info->snd_seq,
+ &devlink_nl_family, 0, DEVLINK_CMD_SELFTESTS_RUN);
+ if (!hdr)
+ goto free_msg;
+
+ if (devlink_nl_put_handle(msg, devlink))
+ goto genlmsg_cancel;
+
+ selftests = nla_nest_start(msg, DEVLINK_ATTR_SELFTESTS);
+ if (!selftests)
+ goto genlmsg_cancel;
+
+ for (i = DEVLINK_ATTR_SELFTEST_ID_UNSPEC + 1;
+ i <= DEVLINK_ATTR_SELFTEST_ID_MAX; i++) {
+ enum devlink_selftest_status test_status;
+
+ if (nla_get_flag(tb[i])) {
+ if (!devlink->ops->selftest_check(devlink, i,
+ info->extack)) {
+ if (devlink_selftest_result_put(msg, i,
+ DEVLINK_SELFTEST_STATUS_SKIP))
+ goto selftests_nest_cancel;
+ continue;
+ }
+
+ test_status = devlink->ops->selftest_run(devlink, i,
+ info->extack);
+ if (devlink_selftest_result_put(msg, i, test_status))
+ goto selftests_nest_cancel;
+ }
+ }
+
+ nla_nest_end(msg, selftests);
+ genlmsg_end(msg, hdr);
+ return genlmsg_reply(msg, info);
+
+selftests_nest_cancel:
+ nla_nest_cancel(msg, selftests);
+genlmsg_cancel:
+ genlmsg_cancel(msg, hdr);
+free_msg:
+ nlmsg_free(msg);
+ return err;
+}
+
+static const struct devlink_param devlink_param_generic[] = {
+ {
+ .id = DEVLINK_PARAM_GENERIC_ID_INT_ERR_RESET,
+ .name = DEVLINK_PARAM_GENERIC_INT_ERR_RESET_NAME,
+ .type = DEVLINK_PARAM_GENERIC_INT_ERR_RESET_TYPE,
+ },
+ {
+ .id = DEVLINK_PARAM_GENERIC_ID_MAX_MACS,
+ .name = DEVLINK_PARAM_GENERIC_MAX_MACS_NAME,
+ .type = DEVLINK_PARAM_GENERIC_MAX_MACS_TYPE,
+ },
+ {
+ .id = DEVLINK_PARAM_GENERIC_ID_ENABLE_SRIOV,
+ .name = DEVLINK_PARAM_GENERIC_ENABLE_SRIOV_NAME,
+ .type = DEVLINK_PARAM_GENERIC_ENABLE_SRIOV_TYPE,
+ },
+ {
+ .id = DEVLINK_PARAM_GENERIC_ID_REGION_SNAPSHOT,
+ .name = DEVLINK_PARAM_GENERIC_REGION_SNAPSHOT_NAME,
+ .type = DEVLINK_PARAM_GENERIC_REGION_SNAPSHOT_TYPE,
+ },
+ {
+ .id = DEVLINK_PARAM_GENERIC_ID_IGNORE_ARI,
+ .name = DEVLINK_PARAM_GENERIC_IGNORE_ARI_NAME,
+ .type = DEVLINK_PARAM_GENERIC_IGNORE_ARI_TYPE,
+ },
+ {
+ .id = DEVLINK_PARAM_GENERIC_ID_MSIX_VEC_PER_PF_MAX,
+ .name = DEVLINK_PARAM_GENERIC_MSIX_VEC_PER_PF_MAX_NAME,
+ .type = DEVLINK_PARAM_GENERIC_MSIX_VEC_PER_PF_MAX_TYPE,
+ },
+ {
+ .id = DEVLINK_PARAM_GENERIC_ID_MSIX_VEC_PER_PF_MIN,
+ .name = DEVLINK_PARAM_GENERIC_MSIX_VEC_PER_PF_MIN_NAME,
+ .type = DEVLINK_PARAM_GENERIC_MSIX_VEC_PER_PF_MIN_TYPE,
+ },
+ {
+ .id = DEVLINK_PARAM_GENERIC_ID_FW_LOAD_POLICY,
+ .name = DEVLINK_PARAM_GENERIC_FW_LOAD_POLICY_NAME,
+ .type = DEVLINK_PARAM_GENERIC_FW_LOAD_POLICY_TYPE,
+ },
+ {
+ .id = DEVLINK_PARAM_GENERIC_ID_RESET_DEV_ON_DRV_PROBE,
+ .name = DEVLINK_PARAM_GENERIC_RESET_DEV_ON_DRV_PROBE_NAME,
+ .type = DEVLINK_PARAM_GENERIC_RESET_DEV_ON_DRV_PROBE_TYPE,
+ },
+ {
+ .id = DEVLINK_PARAM_GENERIC_ID_ENABLE_ROCE,
+ .name = DEVLINK_PARAM_GENERIC_ENABLE_ROCE_NAME,
+ .type = DEVLINK_PARAM_GENERIC_ENABLE_ROCE_TYPE,
+ },
+ {
+ .id = DEVLINK_PARAM_GENERIC_ID_ENABLE_REMOTE_DEV_RESET,
+ .name = DEVLINK_PARAM_GENERIC_ENABLE_REMOTE_DEV_RESET_NAME,
+ .type = DEVLINK_PARAM_GENERIC_ENABLE_REMOTE_DEV_RESET_TYPE,
+ },
+ {
+ .id = DEVLINK_PARAM_GENERIC_ID_ENABLE_ETH,
+ .name = DEVLINK_PARAM_GENERIC_ENABLE_ETH_NAME,
+ .type = DEVLINK_PARAM_GENERIC_ENABLE_ETH_TYPE,
+ },
+ {
+ .id = DEVLINK_PARAM_GENERIC_ID_ENABLE_RDMA,
+ .name = DEVLINK_PARAM_GENERIC_ENABLE_RDMA_NAME,
+ .type = DEVLINK_PARAM_GENERIC_ENABLE_RDMA_TYPE,
+ },
+ {
+ .id = DEVLINK_PARAM_GENERIC_ID_ENABLE_VNET,
+ .name = DEVLINK_PARAM_GENERIC_ENABLE_VNET_NAME,
+ .type = DEVLINK_PARAM_GENERIC_ENABLE_VNET_TYPE,
+ },
+ {
+ .id = DEVLINK_PARAM_GENERIC_ID_ENABLE_IWARP,
+ .name = DEVLINK_PARAM_GENERIC_ENABLE_IWARP_NAME,
+ .type = DEVLINK_PARAM_GENERIC_ENABLE_IWARP_TYPE,
+ },
+ {
+ .id = DEVLINK_PARAM_GENERIC_ID_IO_EQ_SIZE,
+ .name = DEVLINK_PARAM_GENERIC_IO_EQ_SIZE_NAME,
+ .type = DEVLINK_PARAM_GENERIC_IO_EQ_SIZE_TYPE,
+ },
+ {
+ .id = DEVLINK_PARAM_GENERIC_ID_EVENT_EQ_SIZE,
+ .name = DEVLINK_PARAM_GENERIC_EVENT_EQ_SIZE_NAME,
+ .type = DEVLINK_PARAM_GENERIC_EVENT_EQ_SIZE_TYPE,
+ },
+};
+
+static int devlink_param_generic_verify(const struct devlink_param *param)
+{
+ /* verify it match generic parameter by id and name */
+ if (param->id > DEVLINK_PARAM_GENERIC_ID_MAX)
+ return -EINVAL;
+ if (strcmp(param->name, devlink_param_generic[param->id].name))
+ return -ENOENT;
+
+ WARN_ON(param->type != devlink_param_generic[param->id].type);
+
+ return 0;
+}
+
+static int devlink_param_driver_verify(const struct devlink_param *param)
+{
+ int i;
+
+ if (param->id <= DEVLINK_PARAM_GENERIC_ID_MAX)
+ return -EINVAL;
+ /* verify no such name in generic params */
+ for (i = 0; i <= DEVLINK_PARAM_GENERIC_ID_MAX; i++)
+ if (!strcmp(param->name, devlink_param_generic[i].name))
+ return -EEXIST;
+
+ return 0;
+}
+
+static struct devlink_param_item *
+devlink_param_find_by_name(struct list_head *param_list,
+ const char *param_name)
+{
+ struct devlink_param_item *param_item;
+
+ list_for_each_entry(param_item, param_list, list)
+ if (!strcmp(param_item->param->name, param_name))
+ return param_item;
+ return NULL;
+}
+
+static struct devlink_param_item *
+devlink_param_find_by_id(struct list_head *param_list, u32 param_id)
+{
+ struct devlink_param_item *param_item;
+
+ list_for_each_entry(param_item, param_list, list)
+ if (param_item->param->id == param_id)
+ return param_item;
+ return NULL;
+}
+
+static bool
+devlink_param_cmode_is_supported(const struct devlink_param *param,
+ enum devlink_param_cmode cmode)
+{
+ return test_bit(cmode, &param->supported_cmodes);
+}
+
+static int devlink_param_get(struct devlink *devlink,
+ const struct devlink_param *param,
+ struct devlink_param_gset_ctx *ctx)
+{
+ if (!param->get || devlink->reload_failed)
+ return -EOPNOTSUPP;
+ return param->get(devlink, param->id, ctx);
+}
+
+static int devlink_param_set(struct devlink *devlink,
+ const struct devlink_param *param,
+ struct devlink_param_gset_ctx *ctx)
+{
+ if (!param->set || devlink->reload_failed)
+ return -EOPNOTSUPP;
+ return param->set(devlink, param->id, ctx);
+}
+
+static int
+devlink_param_type_to_nla_type(enum devlink_param_type param_type)
+{
+ switch (param_type) {
+ case DEVLINK_PARAM_TYPE_U8:
+ return NLA_U8;
+ case DEVLINK_PARAM_TYPE_U16:
+ return NLA_U16;
+ case DEVLINK_PARAM_TYPE_U32:
+ return NLA_U32;
+ case DEVLINK_PARAM_TYPE_STRING:
+ return NLA_STRING;
+ case DEVLINK_PARAM_TYPE_BOOL:
+ return NLA_FLAG;
+ default:
+ return -EINVAL;
+ }
+}
+
+static int
+devlink_nl_param_value_fill_one(struct sk_buff *msg,
+ enum devlink_param_type type,
+ enum devlink_param_cmode cmode,
+ union devlink_param_value val)
+{
+ struct nlattr *param_value_attr;
+
+ param_value_attr = nla_nest_start_noflag(msg,
+ DEVLINK_ATTR_PARAM_VALUE);
+ if (!param_value_attr)
+ goto nla_put_failure;
+
+ if (nla_put_u8(msg, DEVLINK_ATTR_PARAM_VALUE_CMODE, cmode))
+ goto value_nest_cancel;
+
+ switch (type) {
+ case DEVLINK_PARAM_TYPE_U8:
+ if (nla_put_u8(msg, DEVLINK_ATTR_PARAM_VALUE_DATA, val.vu8))
+ goto value_nest_cancel;
+ break;
+ case DEVLINK_PARAM_TYPE_U16:
+ if (nla_put_u16(msg, DEVLINK_ATTR_PARAM_VALUE_DATA, val.vu16))
+ goto value_nest_cancel;
+ break;
+ case DEVLINK_PARAM_TYPE_U32:
+ if (nla_put_u32(msg, DEVLINK_ATTR_PARAM_VALUE_DATA, val.vu32))
+ goto value_nest_cancel;
+ break;
+ case DEVLINK_PARAM_TYPE_STRING:
+ if (nla_put_string(msg, DEVLINK_ATTR_PARAM_VALUE_DATA,
+ val.vstr))
+ goto value_nest_cancel;
+ break;
+ case DEVLINK_PARAM_TYPE_BOOL:
+ if (val.vbool &&
+ nla_put_flag(msg, DEVLINK_ATTR_PARAM_VALUE_DATA))
+ goto value_nest_cancel;
+ break;
+ }
+
+ nla_nest_end(msg, param_value_attr);
+ return 0;
+
+value_nest_cancel:
+ nla_nest_cancel(msg, param_value_attr);
+nla_put_failure:
+ return -EMSGSIZE;
+}
+
+static int devlink_nl_param_fill(struct sk_buff *msg, struct devlink *devlink,
+ unsigned int port_index,
+ struct devlink_param_item *param_item,
+ enum devlink_command cmd,
+ u32 portid, u32 seq, int flags)
+{
+ union devlink_param_value param_value[DEVLINK_PARAM_CMODE_MAX + 1];
+ bool param_value_set[DEVLINK_PARAM_CMODE_MAX + 1] = {};
+ const struct devlink_param *param = param_item->param;
+ struct devlink_param_gset_ctx ctx;
+ struct nlattr *param_values_list;
+ struct nlattr *param_attr;
+ int nla_type;
+ void *hdr;
+ int err;
+ int i;
+
+ /* Get value from driver part to driverinit configuration mode */
+ for (i = 0; i <= DEVLINK_PARAM_CMODE_MAX; i++) {
+ if (!devlink_param_cmode_is_supported(param, i))
+ continue;
+ if (i == DEVLINK_PARAM_CMODE_DRIVERINIT) {
+ if (!param_item->driverinit_value_valid)
+ return -EOPNOTSUPP;
+ param_value[i] = param_item->driverinit_value;
+ } else {
+ ctx.cmode = i;
+ err = devlink_param_get(devlink, param, &ctx);
+ if (err)
+ return err;
+ param_value[i] = ctx.val;
+ }
+ param_value_set[i] = true;
+ }
+
+ hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
+ if (!hdr)
+ return -EMSGSIZE;
+
+ if (devlink_nl_put_handle(msg, devlink))
+ goto genlmsg_cancel;
+
+ if (cmd == DEVLINK_CMD_PORT_PARAM_GET ||
+ cmd == DEVLINK_CMD_PORT_PARAM_NEW ||
+ cmd == DEVLINK_CMD_PORT_PARAM_DEL)
+ if (nla_put_u32(msg, DEVLINK_ATTR_PORT_INDEX, port_index))
+ goto genlmsg_cancel;
+
+ param_attr = nla_nest_start_noflag(msg, DEVLINK_ATTR_PARAM);
+ if (!param_attr)
+ goto genlmsg_cancel;
+ if (nla_put_string(msg, DEVLINK_ATTR_PARAM_NAME, param->name))
+ goto param_nest_cancel;
+ if (param->generic && nla_put_flag(msg, DEVLINK_ATTR_PARAM_GENERIC))
+ goto param_nest_cancel;
+
+ nla_type = devlink_param_type_to_nla_type(param->type);
+ if (nla_type < 0)
+ goto param_nest_cancel;
+ if (nla_put_u8(msg, DEVLINK_ATTR_PARAM_TYPE, nla_type))
+ goto param_nest_cancel;
+
+ param_values_list = nla_nest_start_noflag(msg,
+ DEVLINK_ATTR_PARAM_VALUES_LIST);
+ if (!param_values_list)
+ goto param_nest_cancel;
+
+ for (i = 0; i <= DEVLINK_PARAM_CMODE_MAX; i++) {
+ if (!param_value_set[i])
+ continue;
+ err = devlink_nl_param_value_fill_one(msg, param->type,
+ i, param_value[i]);
+ if (err)
+ goto values_list_nest_cancel;
+ }
+
+ nla_nest_end(msg, param_values_list);
+ nla_nest_end(msg, param_attr);
+ genlmsg_end(msg, hdr);
+ return 0;
+
+values_list_nest_cancel:
+ nla_nest_end(msg, param_values_list);
+param_nest_cancel:
+ nla_nest_cancel(msg, param_attr);
+genlmsg_cancel:
+ genlmsg_cancel(msg, hdr);
+ return -EMSGSIZE;
+}
+
+static void devlink_param_notify(struct devlink *devlink,
+ unsigned int port_index,
+ struct devlink_param_item *param_item,
+ enum devlink_command cmd)
+{
+ struct sk_buff *msg;
+ int err;
+
+ WARN_ON(cmd != DEVLINK_CMD_PARAM_NEW && cmd != DEVLINK_CMD_PARAM_DEL &&
+ cmd != DEVLINK_CMD_PORT_PARAM_NEW &&
+ cmd != DEVLINK_CMD_PORT_PARAM_DEL);
+ ASSERT_DEVLINK_REGISTERED(devlink);
+
+ msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
+ if (!msg)
+ return;
+ err = devlink_nl_param_fill(msg, devlink, port_index, param_item, cmd,
+ 0, 0, 0);
+ if (err) {
+ nlmsg_free(msg);
+ return;
+ }
+
+ genlmsg_multicast_netns(&devlink_nl_family, devlink_net(devlink),
+ msg, 0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL);
+}
+
+static int devlink_nl_cmd_param_get_dumpit(struct sk_buff *msg,
+ struct netlink_callback *cb)
+{
+ struct devlink_param_item *param_item;
+ struct devlink *devlink;
+ int start = cb->args[0];
+ unsigned long index;
+ int idx = 0;
+ int err = 0;
+
+ devlinks_xa_for_each_registered_get(sock_net(msg->sk), index, devlink) {
+ devl_lock(devlink);
+ list_for_each_entry(param_item, &devlink->param_list, list) {
+ if (idx < start) {
+ idx++;
+ continue;
+ }
+ err = devlink_nl_param_fill(msg, devlink, 0, param_item,
+ DEVLINK_CMD_PARAM_GET,
+ NETLINK_CB(cb->skb).portid,
+ cb->nlh->nlmsg_seq,
+ NLM_F_MULTI);
+ if (err == -EOPNOTSUPP) {
+ err = 0;
+ } else if (err) {
+ devl_unlock(devlink);
+ devlink_put(devlink);
+ goto out;
+ }
+ idx++;
+ }
+ devl_unlock(devlink);
+ devlink_put(devlink);
+ }
+out:
+ if (err != -EMSGSIZE)
+ return err;
+
+ cb->args[0] = idx;
+ return msg->len;
+}
+
+static int
+devlink_param_type_get_from_info(struct genl_info *info,
+ enum devlink_param_type *param_type)
+{
+ if (GENL_REQ_ATTR_CHECK(info, DEVLINK_ATTR_PARAM_TYPE))
+ return -EINVAL;
+
+ switch (nla_get_u8(info->attrs[DEVLINK_ATTR_PARAM_TYPE])) {
+ case NLA_U8:
+ *param_type = DEVLINK_PARAM_TYPE_U8;
+ break;
+ case NLA_U16:
+ *param_type = DEVLINK_PARAM_TYPE_U16;
+ break;
+ case NLA_U32:
+ *param_type = DEVLINK_PARAM_TYPE_U32;
+ break;
+ case NLA_STRING:
+ *param_type = DEVLINK_PARAM_TYPE_STRING;
+ break;
+ case NLA_FLAG:
+ *param_type = DEVLINK_PARAM_TYPE_BOOL;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static int
+devlink_param_value_get_from_info(const struct devlink_param *param,
+ struct genl_info *info,
+ union devlink_param_value *value)
+{
+ struct nlattr *param_data;
+ int len;
+
+ param_data = info->attrs[DEVLINK_ATTR_PARAM_VALUE_DATA];
+
+ if (param->type != DEVLINK_PARAM_TYPE_BOOL && !param_data)
+ return -EINVAL;
+
+ switch (param->type) {
+ case DEVLINK_PARAM_TYPE_U8:
+ if (nla_len(param_data) != sizeof(u8))
+ return -EINVAL;
+ value->vu8 = nla_get_u8(param_data);
+ break;
+ case DEVLINK_PARAM_TYPE_U16:
+ if (nla_len(param_data) != sizeof(u16))
+ return -EINVAL;
+ value->vu16 = nla_get_u16(param_data);
+ break;
+ case DEVLINK_PARAM_TYPE_U32:
+ if (nla_len(param_data) != sizeof(u32))
+ return -EINVAL;
+ value->vu32 = nla_get_u32(param_data);
+ break;
+ case DEVLINK_PARAM_TYPE_STRING:
+ len = strnlen(nla_data(param_data), nla_len(param_data));
+ if (len == nla_len(param_data) ||
+ len >= __DEVLINK_PARAM_MAX_STRING_VALUE)
+ return -EINVAL;
+ strcpy(value->vstr, nla_data(param_data));
+ break;
+ case DEVLINK_PARAM_TYPE_BOOL:
+ if (param_data && nla_len(param_data))
+ return -EINVAL;
+ value->vbool = nla_get_flag(param_data);
+ break;
+ }
+ return 0;
+}
+
+static struct devlink_param_item *
+devlink_param_get_from_info(struct list_head *param_list,
+ struct genl_info *info)
+{
+ char *param_name;
+
+ if (GENL_REQ_ATTR_CHECK(info, DEVLINK_ATTR_PARAM_NAME))
+ return NULL;
+
+ param_name = nla_data(info->attrs[DEVLINK_ATTR_PARAM_NAME]);
+ return devlink_param_find_by_name(param_list, param_name);
+}
+
+static int devlink_nl_cmd_param_get_doit(struct sk_buff *skb,
+ struct genl_info *info)
+{
+ struct devlink *devlink = info->user_ptr[0];
+ struct devlink_param_item *param_item;
+ struct sk_buff *msg;
+ int err;
+
+ param_item = devlink_param_get_from_info(&devlink->param_list, info);
+ if (!param_item)
+ return -EINVAL;
+
+ msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
+ if (!msg)
+ return -ENOMEM;
+
+ err = devlink_nl_param_fill(msg, devlink, 0, param_item,
+ DEVLINK_CMD_PARAM_GET,
+ info->snd_portid, info->snd_seq, 0);
+ if (err) {
+ nlmsg_free(msg);
+ return err;
+ }
+
+ return genlmsg_reply(msg, info);
+}
+
+static int __devlink_nl_cmd_param_set_doit(struct devlink *devlink,
+ unsigned int port_index,
+ struct list_head *param_list,
+ struct genl_info *info,
+ enum devlink_command cmd)
+{
+ enum devlink_param_type param_type;
+ struct devlink_param_gset_ctx ctx;
+ enum devlink_param_cmode cmode;
+ struct devlink_param_item *param_item;
+ const struct devlink_param *param;
+ union devlink_param_value value;
+ int err = 0;
+
+ param_item = devlink_param_get_from_info(param_list, info);
+ if (!param_item)
+ return -EINVAL;
+ param = param_item->param;
+ err = devlink_param_type_get_from_info(info, &param_type);
+ if (err)
+ return err;
+ if (param_type != param->type)
+ return -EINVAL;
+ err = devlink_param_value_get_from_info(param, info, &value);
+ if (err)
+ return err;
+ if (param->validate) {
+ err = param->validate(devlink, param->id, value, info->extack);
+ if (err)
+ return err;
+ }
+
+ if (GENL_REQ_ATTR_CHECK(info, DEVLINK_ATTR_PARAM_VALUE_CMODE))
+ return -EINVAL;
+ cmode = nla_get_u8(info->attrs[DEVLINK_ATTR_PARAM_VALUE_CMODE]);
+ if (!devlink_param_cmode_is_supported(param, cmode))
+ return -EOPNOTSUPP;
+
+ if (cmode == DEVLINK_PARAM_CMODE_DRIVERINIT) {
+ if (param->type == DEVLINK_PARAM_TYPE_STRING)
+ strcpy(param_item->driverinit_value.vstr, value.vstr);
+ else
+ param_item->driverinit_value = value;
+ param_item->driverinit_value_valid = true;
+ } else {
+ if (!param->set)
+ return -EOPNOTSUPP;
+ ctx.val = value;
+ ctx.cmode = cmode;
+ err = devlink_param_set(devlink, param, &ctx);
+ if (err)
+ return err;
+ }
+
+ devlink_param_notify(devlink, port_index, param_item, cmd);
+ return 0;
+}
+
+static int devlink_nl_cmd_param_set_doit(struct sk_buff *skb,
+ struct genl_info *info)
+{
+ struct devlink *devlink = info->user_ptr[0];
+
+ return __devlink_nl_cmd_param_set_doit(devlink, 0, &devlink->param_list,
+ info, DEVLINK_CMD_PARAM_NEW);
+}
+
+static int devlink_nl_cmd_port_param_get_dumpit(struct sk_buff *msg,
+ struct netlink_callback *cb)
+{
+ NL_SET_ERR_MSG_MOD(cb->extack, "Port params are not supported");
+ return msg->len;
+}
+
+static int devlink_nl_cmd_port_param_get_doit(struct sk_buff *skb,
+ struct genl_info *info)
+{
+ NL_SET_ERR_MSG_MOD(info->extack, "Port params are not supported");
+ return -EINVAL;
+}
+
+static int devlink_nl_cmd_port_param_set_doit(struct sk_buff *skb,
+ struct genl_info *info)
+{
+ NL_SET_ERR_MSG_MOD(info->extack, "Port params are not supported");
+ return -EINVAL;
+}
+
+static int devlink_nl_region_snapshot_id_put(struct sk_buff *msg,
+ struct devlink *devlink,
+ struct devlink_snapshot *snapshot)
+{
+ struct nlattr *snap_attr;
+ int err;
+
+ snap_attr = nla_nest_start_noflag(msg, DEVLINK_ATTR_REGION_SNAPSHOT);
+ if (!snap_attr)
+ return -EINVAL;
+
+ err = nla_put_u32(msg, DEVLINK_ATTR_REGION_SNAPSHOT_ID, snapshot->id);
+ if (err)
+ goto nla_put_failure;
+
+ nla_nest_end(msg, snap_attr);
+ return 0;
+
+nla_put_failure:
+ nla_nest_cancel(msg, snap_attr);
+ return err;
+}
+
+static int devlink_nl_region_snapshots_id_put(struct sk_buff *msg,
+ struct devlink *devlink,
+ struct devlink_region *region)
+{
+ struct devlink_snapshot *snapshot;
+ struct nlattr *snapshots_attr;
+ int err;
+
+ snapshots_attr = nla_nest_start_noflag(msg,
+ DEVLINK_ATTR_REGION_SNAPSHOTS);
+ if (!snapshots_attr)
+ return -EINVAL;
+
+ list_for_each_entry(snapshot, &region->snapshot_list, list) {
+ err = devlink_nl_region_snapshot_id_put(msg, devlink, snapshot);
+ if (err)
+ goto nla_put_failure;
+ }
+
+ nla_nest_end(msg, snapshots_attr);
+ return 0;
+
+nla_put_failure:
+ nla_nest_cancel(msg, snapshots_attr);
+ return err;
+}
+
+static int devlink_nl_region_fill(struct sk_buff *msg, struct devlink *devlink,
+ enum devlink_command cmd, u32 portid,
+ u32 seq, int flags,
+ struct devlink_region *region)
+{
+ void *hdr;
+ int err;
+
+ hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
+ if (!hdr)
+ return -EMSGSIZE;
+
+ err = devlink_nl_put_handle(msg, devlink);
+ if (err)
+ goto nla_put_failure;
+
+ if (region->port) {
+ err = nla_put_u32(msg, DEVLINK_ATTR_PORT_INDEX,
+ region->port->index);
+ if (err)
+ goto nla_put_failure;
+ }
+
+ err = nla_put_string(msg, DEVLINK_ATTR_REGION_NAME, region->ops->name);
+ if (err)
+ goto nla_put_failure;
+
+ err = nla_put_u64_64bit(msg, DEVLINK_ATTR_REGION_SIZE,
+ region->size,
+ DEVLINK_ATTR_PAD);
+ if (err)
+ goto nla_put_failure;
+
+ err = nla_put_u32(msg, DEVLINK_ATTR_REGION_MAX_SNAPSHOTS,
+ region->max_snapshots);
+ if (err)
+ goto nla_put_failure;
+
+ err = devlink_nl_region_snapshots_id_put(msg, devlink, region);
+ if (err)
+ goto nla_put_failure;
+
+ genlmsg_end(msg, hdr);
+ return 0;
+
+nla_put_failure:
+ genlmsg_cancel(msg, hdr);
+ return err;
+}
+
+static struct sk_buff *
+devlink_nl_region_notify_build(struct devlink_region *region,
+ struct devlink_snapshot *snapshot,
+ enum devlink_command cmd, u32 portid, u32 seq)
+{
+ struct devlink *devlink = region->devlink;
+ struct sk_buff *msg;
+ void *hdr;
+ int err;
+
+
+ msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
+ if (!msg)
+ return ERR_PTR(-ENOMEM);
+
+ hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, 0, cmd);
+ if (!hdr) {
+ err = -EMSGSIZE;
+ goto out_free_msg;
+ }
+
+ err = devlink_nl_put_handle(msg, devlink);
+ if (err)
+ goto out_cancel_msg;
+
+ if (region->port) {
+ err = nla_put_u32(msg, DEVLINK_ATTR_PORT_INDEX,
+ region->port->index);
+ if (err)
+ goto out_cancel_msg;
+ }
+
+ err = nla_put_string(msg, DEVLINK_ATTR_REGION_NAME,
+ region->ops->name);
+ if (err)
+ goto out_cancel_msg;
+
+ if (snapshot) {
+ err = nla_put_u32(msg, DEVLINK_ATTR_REGION_SNAPSHOT_ID,
+ snapshot->id);
+ if (err)
+ goto out_cancel_msg;
+ } else {
+ err = nla_put_u64_64bit(msg, DEVLINK_ATTR_REGION_SIZE,
+ region->size, DEVLINK_ATTR_PAD);
+ if (err)
+ goto out_cancel_msg;
+ }
+ genlmsg_end(msg, hdr);
+
+ return msg;
+
+out_cancel_msg:
+ genlmsg_cancel(msg, hdr);
+out_free_msg:
+ nlmsg_free(msg);
+ return ERR_PTR(err);
+}
+
+static void devlink_nl_region_notify(struct devlink_region *region,
+ struct devlink_snapshot *snapshot,
+ enum devlink_command cmd)
+{
+ struct devlink *devlink = region->devlink;
+ struct sk_buff *msg;
+
+ WARN_ON(cmd != DEVLINK_CMD_REGION_NEW && cmd != DEVLINK_CMD_REGION_DEL);
+ if (!xa_get_mark(&devlinks, devlink->index, DEVLINK_REGISTERED))
+ return;
+
+ msg = devlink_nl_region_notify_build(region, snapshot, cmd, 0, 0);
+ if (IS_ERR(msg))
+ return;
+
+ genlmsg_multicast_netns(&devlink_nl_family, devlink_net(devlink), msg,
+ 0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL);
+}
+
+/**
+ * __devlink_snapshot_id_increment - Increment number of snapshots using an id
+ * @devlink: devlink instance
+ * @id: the snapshot id
+ *
+ * Track when a new snapshot begins using an id. Load the count for the
+ * given id from the snapshot xarray, increment it, and store it back.
+ *
+ * Called when a new snapshot is created with the given id.
+ *
+ * The id *must* have been previously allocated by
+ * devlink_region_snapshot_id_get().
+ *
+ * Returns 0 on success, or an error on failure.
+ */
+static int __devlink_snapshot_id_increment(struct devlink *devlink, u32 id)
+{
+ unsigned long count;
+ void *p;
+ int err;
+
+ xa_lock(&devlink->snapshot_ids);
+ p = xa_load(&devlink->snapshot_ids, id);
+ if (WARN_ON(!p)) {
+ err = -EINVAL;
+ goto unlock;
+ }
+
+ if (WARN_ON(!xa_is_value(p))) {
+ err = -EINVAL;
+ goto unlock;
+ }
+
+ count = xa_to_value(p);
+ count++;
+
+ err = xa_err(__xa_store(&devlink->snapshot_ids, id, xa_mk_value(count),
+ GFP_ATOMIC));
+unlock:
+ xa_unlock(&devlink->snapshot_ids);
+ return err;
+}
+
+/**
+ * __devlink_snapshot_id_decrement - Decrease number of snapshots using an id
+ * @devlink: devlink instance
+ * @id: the snapshot id
+ *
+ * Track when a snapshot is deleted and stops using an id. Load the count
+ * for the given id from the snapshot xarray, decrement it, and store it
+ * back.
+ *
+ * If the count reaches zero, erase this id from the xarray, freeing it
+ * up for future re-use by devlink_region_snapshot_id_get().
+ *
+ * Called when a snapshot using the given id is deleted, and when the
+ * initial allocator of the id is finished using it.
+ */
+static void __devlink_snapshot_id_decrement(struct devlink *devlink, u32 id)
+{
+ unsigned long count;
+ void *p;
+
+ xa_lock(&devlink->snapshot_ids);
+ p = xa_load(&devlink->snapshot_ids, id);
+ if (WARN_ON(!p))
+ goto unlock;
+
+ if (WARN_ON(!xa_is_value(p)))
+ goto unlock;
+
+ count = xa_to_value(p);
+
+ if (count > 1) {
+ count--;
+ __xa_store(&devlink->snapshot_ids, id, xa_mk_value(count),
+ GFP_ATOMIC);
+ } else {
+ /* If this was the last user, we can erase this id */
+ __xa_erase(&devlink->snapshot_ids, id);
+ }
+unlock:
+ xa_unlock(&devlink->snapshot_ids);
+}
+
+/**
+ * __devlink_snapshot_id_insert - Insert a specific snapshot ID
+ * @devlink: devlink instance
+ * @id: the snapshot id
+ *
+ * Mark the given snapshot id as used by inserting a zero value into the
+ * snapshot xarray.
+ *
+ * This must be called while holding the devlink instance lock. Unlike
+ * devlink_snapshot_id_get, the initial reference count is zero, not one.
+ * It is expected that the id will immediately be used before
+ * releasing the devlink instance lock.
+ *
+ * Returns zero on success, or an error code if the snapshot id could not
+ * be inserted.
+ */
+static int __devlink_snapshot_id_insert(struct devlink *devlink, u32 id)
+{
+ int err;
+
+ xa_lock(&devlink->snapshot_ids);
+ if (xa_load(&devlink->snapshot_ids, id)) {
+ xa_unlock(&devlink->snapshot_ids);
+ return -EEXIST;
+ }
+ err = xa_err(__xa_store(&devlink->snapshot_ids, id, xa_mk_value(0),
+ GFP_ATOMIC));
+ xa_unlock(&devlink->snapshot_ids);
+ return err;
+}
+
+/**
+ * __devlink_region_snapshot_id_get - get snapshot ID
+ * @devlink: devlink instance
+ * @id: storage to return snapshot id
+ *
+ * Allocates a new snapshot id. Returns zero on success, or a negative
+ * error on failure. Must be called while holding the devlink instance
+ * lock.
+ *
+ * Snapshot IDs are tracked using an xarray which stores the number of
+ * users of the snapshot id.
+ *
+ * Note that the caller of this function counts as a 'user', in order to
+ * avoid race conditions. The caller must release its hold on the
+ * snapshot by using devlink_region_snapshot_id_put.
+ */
+static int __devlink_region_snapshot_id_get(struct devlink *devlink, u32 *id)
+{
+ return xa_alloc(&devlink->snapshot_ids, id, xa_mk_value(1),
+ xa_limit_32b, GFP_KERNEL);
+}
+
+/**
+ * __devlink_region_snapshot_create - create a new snapshot
+ * This will add a new snapshot of a region. The snapshot
+ * will be stored on the region struct and can be accessed
+ * from devlink. This is useful for future analyses of snapshots.
+ * Multiple snapshots can be created on a region.
+ * The @snapshot_id should be obtained using the getter function.
+ *
+ * Must be called only while holding the region snapshot lock.
+ *
+ * @region: devlink region of the snapshot
+ * @data: snapshot data
+ * @snapshot_id: snapshot id to be created
+ */
+static int
+__devlink_region_snapshot_create(struct devlink_region *region,
+ u8 *data, u32 snapshot_id)
+{
+ struct devlink *devlink = region->devlink;
+ struct devlink_snapshot *snapshot;
+ int err;
+
+ lockdep_assert_held(&region->snapshot_lock);
+
+ /* check if region can hold one more snapshot */
+ if (region->cur_snapshots == region->max_snapshots)
+ return -ENOSPC;
+
+ if (devlink_region_snapshot_get_by_id(region, snapshot_id))
+ return -EEXIST;
+
+ snapshot = kzalloc(sizeof(*snapshot), GFP_KERNEL);
+ if (!snapshot)
+ return -ENOMEM;
+
+ err = __devlink_snapshot_id_increment(devlink, snapshot_id);
+ if (err)
+ goto err_snapshot_id_increment;
+
+ snapshot->id = snapshot_id;
+ snapshot->region = region;
+ snapshot->data = data;
+
+ list_add_tail(&snapshot->list, &region->snapshot_list);
+
+ region->cur_snapshots++;
+
+ devlink_nl_region_notify(region, snapshot, DEVLINK_CMD_REGION_NEW);
+ return 0;
+
+err_snapshot_id_increment:
+ kfree(snapshot);
+ return err;
+}
+
+static void devlink_region_snapshot_del(struct devlink_region *region,
+ struct devlink_snapshot *snapshot)
+{
+ struct devlink *devlink = region->devlink;
+
+ lockdep_assert_held(&region->snapshot_lock);
+
+ devlink_nl_region_notify(region, snapshot, DEVLINK_CMD_REGION_DEL);
+ region->cur_snapshots--;
+ list_del(&snapshot->list);
+ region->ops->destructor(snapshot->data);
+ __devlink_snapshot_id_decrement(devlink, snapshot->id);
+ kfree(snapshot);
+}
+
+static int devlink_nl_cmd_region_get_doit(struct sk_buff *skb,
+ struct genl_info *info)
+{
+ struct devlink *devlink = info->user_ptr[0];
+ struct devlink_port *port = NULL;
+ struct devlink_region *region;
+ const char *region_name;
+ struct sk_buff *msg;
+ unsigned int index;
+ int err;
+
+ if (GENL_REQ_ATTR_CHECK(info, DEVLINK_ATTR_REGION_NAME))
+ return -EINVAL;
+
+ if (info->attrs[DEVLINK_ATTR_PORT_INDEX]) {
+ index = nla_get_u32(info->attrs[DEVLINK_ATTR_PORT_INDEX]);
+
+ port = devlink_port_get_by_index(devlink, index);
+ if (!port)
+ return -ENODEV;
+ }
+
+ region_name = nla_data(info->attrs[DEVLINK_ATTR_REGION_NAME]);
+ if (port)
+ region = devlink_port_region_get_by_name(port, region_name);
+ else
+ region = devlink_region_get_by_name(devlink, region_name);
+
+ if (!region)
+ return -EINVAL;
+
+ msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
+ if (!msg)
+ return -ENOMEM;
+
+ err = devlink_nl_region_fill(msg, devlink, DEVLINK_CMD_REGION_GET,
+ info->snd_portid, info->snd_seq, 0,
+ region);
+ if (err) {
+ nlmsg_free(msg);
+ return err;
+ }
+
+ return genlmsg_reply(msg, info);
+}
+
+static int devlink_nl_cmd_region_get_port_dumpit(struct sk_buff *msg,
+ struct netlink_callback *cb,
+ struct devlink_port *port,
+ int *idx,
+ int start)
+{
+ struct devlink_region *region;
+ int err = 0;
+
+ list_for_each_entry(region, &port->region_list, list) {
+ if (*idx < start) {
+ (*idx)++;
+ continue;
+ }
+ err = devlink_nl_region_fill(msg, port->devlink,
+ DEVLINK_CMD_REGION_GET,
+ NETLINK_CB(cb->skb).portid,
+ cb->nlh->nlmsg_seq,
+ NLM_F_MULTI, region);
+ if (err)
+ goto out;
+ (*idx)++;
+ }
+
+out:
+ return err;
+}
+
+static int devlink_nl_cmd_region_get_devlink_dumpit(struct sk_buff *msg,
+ struct netlink_callback *cb,
+ struct devlink *devlink,
+ int *idx,
+ int start)
+{
+ struct devlink_region *region;
+ struct devlink_port *port;
+ int err = 0;
+
+ devl_lock(devlink);
+ list_for_each_entry(region, &devlink->region_list, list) {
+ if (*idx < start) {
+ (*idx)++;
+ continue;
+ }
+ err = devlink_nl_region_fill(msg, devlink,
+ DEVLINK_CMD_REGION_GET,
+ NETLINK_CB(cb->skb).portid,
+ cb->nlh->nlmsg_seq,
+ NLM_F_MULTI, region);
+ if (err)
+ goto out;
+ (*idx)++;
+ }
+
+ list_for_each_entry(port, &devlink->port_list, list) {
+ err = devlink_nl_cmd_region_get_port_dumpit(msg, cb, port, idx,
+ start);
+ if (err)
+ goto out;
+ }
+
+out:
+ devl_unlock(devlink);
+ return err;
+}
+
+static int devlink_nl_cmd_region_get_dumpit(struct sk_buff *msg,
+ struct netlink_callback *cb)
+{
+ struct devlink *devlink;
+ int start = cb->args[0];
+ unsigned long index;
+ int idx = 0;
+ int err = 0;
+
+ devlinks_xa_for_each_registered_get(sock_net(msg->sk), index, devlink) {
+ err = devlink_nl_cmd_region_get_devlink_dumpit(msg, cb, devlink,
+ &idx, start);
+ devlink_put(devlink);
+ if (err)
+ goto out;
+ }
+out:
+ cb->args[0] = idx;
+ return msg->len;
+}
+
+static int devlink_nl_cmd_region_del(struct sk_buff *skb,
+ struct genl_info *info)
+{
+ struct devlink *devlink = info->user_ptr[0];
+ struct devlink_snapshot *snapshot;
+ struct devlink_port *port = NULL;
+ struct devlink_region *region;
+ const char *region_name;
+ unsigned int index;
+ u32 snapshot_id;
+
+ if (GENL_REQ_ATTR_CHECK(info, DEVLINK_ATTR_REGION_NAME) ||
+ GENL_REQ_ATTR_CHECK(info, DEVLINK_ATTR_REGION_SNAPSHOT_ID))
+ return -EINVAL;
+
+ region_name = nla_data(info->attrs[DEVLINK_ATTR_REGION_NAME]);
+ snapshot_id = nla_get_u32(info->attrs[DEVLINK_ATTR_REGION_SNAPSHOT_ID]);
+
+ if (info->attrs[DEVLINK_ATTR_PORT_INDEX]) {
+ index = nla_get_u32(info->attrs[DEVLINK_ATTR_PORT_INDEX]);
+
+ port = devlink_port_get_by_index(devlink, index);
+ if (!port)
+ return -ENODEV;
+ }
+
+ if (port)
+ region = devlink_port_region_get_by_name(port, region_name);
+ else
+ region = devlink_region_get_by_name(devlink, region_name);
+
+ if (!region)
+ return -EINVAL;
+
+ mutex_lock(&region->snapshot_lock);
+ snapshot = devlink_region_snapshot_get_by_id(region, snapshot_id);
+ if (!snapshot) {
+ mutex_unlock(&region->snapshot_lock);
+ return -EINVAL;
+ }
+
+ devlink_region_snapshot_del(region, snapshot);
+ mutex_unlock(&region->snapshot_lock);
+ return 0;
+}
+
+static int
+devlink_nl_cmd_region_new(struct sk_buff *skb, struct genl_info *info)
+{
+ struct devlink *devlink = info->user_ptr[0];
+ struct devlink_snapshot *snapshot;
+ struct devlink_port *port = NULL;
+ struct nlattr *snapshot_id_attr;
+ struct devlink_region *region;
+ const char *region_name;
+ unsigned int index;
+ u32 snapshot_id;
+ u8 *data;
+ int err;
+
+ if (GENL_REQ_ATTR_CHECK(info, DEVLINK_ATTR_REGION_NAME)) {
+ NL_SET_ERR_MSG_MOD(info->extack, "No region name provided");
+ return -EINVAL;
+ }
+
+ region_name = nla_data(info->attrs[DEVLINK_ATTR_REGION_NAME]);
+
+ if (info->attrs[DEVLINK_ATTR_PORT_INDEX]) {
+ index = nla_get_u32(info->attrs[DEVLINK_ATTR_PORT_INDEX]);
+
+ port = devlink_port_get_by_index(devlink, index);
+ if (!port)
+ return -ENODEV;
+ }
+
+ if (port)
+ region = devlink_port_region_get_by_name(port, region_name);
+ else
+ region = devlink_region_get_by_name(devlink, region_name);
+
+ if (!region) {
+ NL_SET_ERR_MSG_MOD(info->extack, "The requested region does not exist");
+ return -EINVAL;
+ }
+
+ if (!region->ops->snapshot) {
+ NL_SET_ERR_MSG_MOD(info->extack, "The requested region does not support taking an immediate snapshot");
+ return -EOPNOTSUPP;
+ }
+
+ mutex_lock(&region->snapshot_lock);
+
+ if (region->cur_snapshots == region->max_snapshots) {
+ NL_SET_ERR_MSG_MOD(info->extack, "The region has reached the maximum number of stored snapshots");
+ err = -ENOSPC;
+ goto unlock;
+ }
+
+ snapshot_id_attr = info->attrs[DEVLINK_ATTR_REGION_SNAPSHOT_ID];
+ if (snapshot_id_attr) {
+ snapshot_id = nla_get_u32(snapshot_id_attr);
+
+ if (devlink_region_snapshot_get_by_id(region, snapshot_id)) {
+ NL_SET_ERR_MSG_MOD(info->extack, "The requested snapshot id is already in use");
+ err = -EEXIST;
+ goto unlock;
+ }
+
+ err = __devlink_snapshot_id_insert(devlink, snapshot_id);
+ if (err)
+ goto unlock;
+ } else {
+ err = __devlink_region_snapshot_id_get(devlink, &snapshot_id);
+ if (err) {
+ NL_SET_ERR_MSG_MOD(info->extack, "Failed to allocate a new snapshot id");
+ goto unlock;
+ }
+ }
+
+ if (port)
+ err = region->port_ops->snapshot(port, region->port_ops,
+ info->extack, &data);
+ else
+ err = region->ops->snapshot(devlink, region->ops,
+ info->extack, &data);
+ if (err)
+ goto err_snapshot_capture;
+
+ err = __devlink_region_snapshot_create(region, data, snapshot_id);
+ if (err)
+ goto err_snapshot_create;
+
+ if (!snapshot_id_attr) {
+ struct sk_buff *msg;
+
+ snapshot = devlink_region_snapshot_get_by_id(region,
+ snapshot_id);
+ if (WARN_ON(!snapshot)) {
+ err = -EINVAL;
+ goto unlock;
+ }
+
+ msg = devlink_nl_region_notify_build(region, snapshot,
+ DEVLINK_CMD_REGION_NEW,
+ info->snd_portid,
+ info->snd_seq);
+ err = PTR_ERR_OR_ZERO(msg);
+ if (err)
+ goto err_notify;
+
+ err = genlmsg_reply(msg, info);
+ if (err)
+ goto err_notify;
+ }
+
+ mutex_unlock(&region->snapshot_lock);
+ return 0;
+
+err_snapshot_create:
+ region->ops->destructor(data);
+err_snapshot_capture:
+ __devlink_snapshot_id_decrement(devlink, snapshot_id);
+ mutex_unlock(&region->snapshot_lock);
+ return err;
+
+err_notify:
+ devlink_region_snapshot_del(region, snapshot);
+unlock:
+ mutex_unlock(&region->snapshot_lock);
+ return err;
+}
+
+static int devlink_nl_cmd_region_read_chunk_fill(struct sk_buff *msg,
+ struct devlink *devlink,
+ u8 *chunk, u32 chunk_size,
+ u64 addr)
+{
+ struct nlattr *chunk_attr;
+ int err;
+
+ chunk_attr = nla_nest_start_noflag(msg, DEVLINK_ATTR_REGION_CHUNK);
+ if (!chunk_attr)
+ return -EINVAL;
+
+ err = nla_put(msg, DEVLINK_ATTR_REGION_CHUNK_DATA, chunk_size, chunk);
+ if (err)
+ goto nla_put_failure;
+
+ err = nla_put_u64_64bit(msg, DEVLINK_ATTR_REGION_CHUNK_ADDR, addr,
+ DEVLINK_ATTR_PAD);
+ if (err)
+ goto nla_put_failure;
+
+ nla_nest_end(msg, chunk_attr);
+ return 0;
+
+nla_put_failure:
+ nla_nest_cancel(msg, chunk_attr);
+ return err;
+}
+
+#define DEVLINK_REGION_READ_CHUNK_SIZE 256
+
+static int devlink_nl_region_read_snapshot_fill(struct sk_buff *skb,
+ struct devlink *devlink,
+ struct devlink_region *region,
+ struct nlattr **attrs,
+ u64 start_offset,
+ u64 end_offset,
+ u64 *new_offset)
+{
+ struct devlink_snapshot *snapshot;
+ u64 curr_offset = start_offset;
+ u32 snapshot_id;
+ int err = 0;
+
+ *new_offset = start_offset;
+
+ snapshot_id = nla_get_u32(attrs[DEVLINK_ATTR_REGION_SNAPSHOT_ID]);
+ snapshot = devlink_region_snapshot_get_by_id(region, snapshot_id);
+ if (!snapshot)
+ return -EINVAL;
+
+ while (curr_offset < end_offset) {
+ u32 data_size;
+ u8 *data;
+
+ if (end_offset - curr_offset < DEVLINK_REGION_READ_CHUNK_SIZE)
+ data_size = end_offset - curr_offset;
+ else
+ data_size = DEVLINK_REGION_READ_CHUNK_SIZE;
+
+ data = &snapshot->data[curr_offset];
+ err = devlink_nl_cmd_region_read_chunk_fill(skb, devlink,
+ data, data_size,
+ curr_offset);
+ if (err)
+ break;
+
+ curr_offset += data_size;
+ }
+ *new_offset = curr_offset;
+
+ return err;
+}
+
+static int devlink_nl_cmd_region_read_dumpit(struct sk_buff *skb,
+ struct netlink_callback *cb)
+{
+ const struct genl_dumpit_info *info = genl_dumpit_info(cb);
+ u64 ret_offset, start_offset, end_offset = U64_MAX;
+ struct nlattr **attrs = info->attrs;
+ struct devlink_port *port = NULL;
+ struct devlink_region *region;
+ struct nlattr *chunks_attr;
+ const char *region_name;
+ struct devlink *devlink;
+ unsigned int index;
+ void *hdr;
+ int err;
+
+ start_offset = *((u64 *)&cb->args[0]);
+
+ devlink = devlink_get_from_attrs(sock_net(cb->skb->sk), attrs);
+ if (IS_ERR(devlink))
+ return PTR_ERR(devlink);
+
+ devl_lock(devlink);
+
+ if (!attrs[DEVLINK_ATTR_REGION_NAME] ||
+ !attrs[DEVLINK_ATTR_REGION_SNAPSHOT_ID]) {
+ err = -EINVAL;
+ goto out_unlock;
+ }
+
+ if (info->attrs[DEVLINK_ATTR_PORT_INDEX]) {
+ index = nla_get_u32(info->attrs[DEVLINK_ATTR_PORT_INDEX]);
+
+ port = devlink_port_get_by_index(devlink, index);
+ if (!port) {
+ err = -ENODEV;
+ goto out_unlock;
+ }
+ }
+
+ region_name = nla_data(attrs[DEVLINK_ATTR_REGION_NAME]);
+
+ if (port)
+ region = devlink_port_region_get_by_name(port, region_name);
+ else
+ region = devlink_region_get_by_name(devlink, region_name);
+
+ if (!region) {
+ err = -EINVAL;
+ goto out_unlock;
+ }
+
+ if (attrs[DEVLINK_ATTR_REGION_CHUNK_ADDR] &&
+ attrs[DEVLINK_ATTR_REGION_CHUNK_LEN]) {
+ if (!start_offset)
+ start_offset =
+ nla_get_u64(attrs[DEVLINK_ATTR_REGION_CHUNK_ADDR]);
+
+ end_offset = nla_get_u64(attrs[DEVLINK_ATTR_REGION_CHUNK_ADDR]);
+ end_offset += nla_get_u64(attrs[DEVLINK_ATTR_REGION_CHUNK_LEN]);
+ }
+
+ if (end_offset > region->size)
+ end_offset = region->size;
+
+ /* return 0 if there is no further data to read */
+ if (start_offset == end_offset) {
+ err = 0;
+ goto out_unlock;
+ }
+
+ hdr = genlmsg_put(skb, NETLINK_CB(cb->skb).portid, cb->nlh->nlmsg_seq,
+ &devlink_nl_family, NLM_F_ACK | NLM_F_MULTI,
+ DEVLINK_CMD_REGION_READ);
+ if (!hdr) {
+ err = -EMSGSIZE;
+ goto out_unlock;
+ }
+
+ err = devlink_nl_put_handle(skb, devlink);
+ if (err)
+ goto nla_put_failure;
+
+ if (region->port) {
+ err = nla_put_u32(skb, DEVLINK_ATTR_PORT_INDEX,
+ region->port->index);
+ if (err)
+ goto nla_put_failure;
+ }
+
+ err = nla_put_string(skb, DEVLINK_ATTR_REGION_NAME, region_name);
+ if (err)
+ goto nla_put_failure;
+
+ chunks_attr = nla_nest_start_noflag(skb, DEVLINK_ATTR_REGION_CHUNKS);
+ if (!chunks_attr) {
+ err = -EMSGSIZE;
+ goto nla_put_failure;
+ }
+
+ err = devlink_nl_region_read_snapshot_fill(skb, devlink,
+ region, attrs,
+ start_offset,
+ end_offset, &ret_offset);
+
+ if (err && err != -EMSGSIZE)
+ goto nla_put_failure;
+
+ /* Check if there was any progress done to prevent infinite loop */
+ if (ret_offset == start_offset) {
+ err = -EINVAL;
+ goto nla_put_failure;
+ }
+
+ *((u64 *)&cb->args[0]) = ret_offset;
+
+ nla_nest_end(skb, chunks_attr);
+ genlmsg_end(skb, hdr);
+ devl_unlock(devlink);
+ devlink_put(devlink);
+ return skb->len;
+
+nla_put_failure:
+ genlmsg_cancel(skb, hdr);
+out_unlock:
+ devl_unlock(devlink);
+ devlink_put(devlink);
+ return err;
+}
+
+int devlink_info_driver_name_put(struct devlink_info_req *req, const char *name)
+{
+ if (!req->msg)
+ return 0;
+ return nla_put_string(req->msg, DEVLINK_ATTR_INFO_DRIVER_NAME, name);
+}
+EXPORT_SYMBOL_GPL(devlink_info_driver_name_put);
+
+int devlink_info_serial_number_put(struct devlink_info_req *req, const char *sn)
+{
+ if (!req->msg)
+ return 0;
+ return nla_put_string(req->msg, DEVLINK_ATTR_INFO_SERIAL_NUMBER, sn);
+}
+EXPORT_SYMBOL_GPL(devlink_info_serial_number_put);
+
+int devlink_info_board_serial_number_put(struct devlink_info_req *req,
+ const char *bsn)
+{
+ if (!req->msg)
+ return 0;
+ return nla_put_string(req->msg, DEVLINK_ATTR_INFO_BOARD_SERIAL_NUMBER,
+ bsn);
+}
+EXPORT_SYMBOL_GPL(devlink_info_board_serial_number_put);
+
+static int devlink_info_version_put(struct devlink_info_req *req, int attr,
+ const char *version_name,
+ const char *version_value,
+ enum devlink_info_version_type version_type)
+{
+ struct nlattr *nest;
+ int err;
+
+ if (req->version_cb)
+ req->version_cb(version_name, version_type,
+ req->version_cb_priv);
+
+ if (!req->msg)
+ return 0;
+
+ nest = nla_nest_start_noflag(req->msg, attr);
+ if (!nest)
+ return -EMSGSIZE;
+
+ err = nla_put_string(req->msg, DEVLINK_ATTR_INFO_VERSION_NAME,
+ version_name);
+ if (err)
+ goto nla_put_failure;
+
+ err = nla_put_string(req->msg, DEVLINK_ATTR_INFO_VERSION_VALUE,
+ version_value);
+ if (err)
+ goto nla_put_failure;
+
+ nla_nest_end(req->msg, nest);
+
+ return 0;
+
+nla_put_failure:
+ nla_nest_cancel(req->msg, nest);
+ return err;
+}
+
+int devlink_info_version_fixed_put(struct devlink_info_req *req,
+ const char *version_name,
+ const char *version_value)
+{
+ return devlink_info_version_put(req, DEVLINK_ATTR_INFO_VERSION_FIXED,
+ version_name, version_value,
+ DEVLINK_INFO_VERSION_TYPE_NONE);
+}
+EXPORT_SYMBOL_GPL(devlink_info_version_fixed_put);
+
+int devlink_info_version_stored_put(struct devlink_info_req *req,
+ const char *version_name,
+ const char *version_value)
+{
+ return devlink_info_version_put(req, DEVLINK_ATTR_INFO_VERSION_STORED,
+ version_name, version_value,
+ DEVLINK_INFO_VERSION_TYPE_NONE);
+}
+EXPORT_SYMBOL_GPL(devlink_info_version_stored_put);
+
+int devlink_info_version_stored_put_ext(struct devlink_info_req *req,
+ const char *version_name,
+ const char *version_value,
+ enum devlink_info_version_type version_type)
+{
+ return devlink_info_version_put(req, DEVLINK_ATTR_INFO_VERSION_STORED,
+ version_name, version_value,
+ version_type);
+}
+EXPORT_SYMBOL_GPL(devlink_info_version_stored_put_ext);
+
+int devlink_info_version_running_put(struct devlink_info_req *req,
+ const char *version_name,
+ const char *version_value)
+{
+ return devlink_info_version_put(req, DEVLINK_ATTR_INFO_VERSION_RUNNING,
+ version_name, version_value,
+ DEVLINK_INFO_VERSION_TYPE_NONE);
+}
+EXPORT_SYMBOL_GPL(devlink_info_version_running_put);
+
+int devlink_info_version_running_put_ext(struct devlink_info_req *req,
+ const char *version_name,
+ const char *version_value,
+ enum devlink_info_version_type version_type)
+{
+ return devlink_info_version_put(req, DEVLINK_ATTR_INFO_VERSION_RUNNING,
+ version_name, version_value,
+ version_type);
+}
+EXPORT_SYMBOL_GPL(devlink_info_version_running_put_ext);
+
+static int
+devlink_nl_info_fill(struct sk_buff *msg, struct devlink *devlink,
+ enum devlink_command cmd, u32 portid,
+ u32 seq, int flags, struct netlink_ext_ack *extack)
+{
+ struct devlink_info_req req = {};
+ void *hdr;
+ int err;
+
+ hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
+ if (!hdr)
+ return -EMSGSIZE;
+
+ err = -EMSGSIZE;
+ if (devlink_nl_put_handle(msg, devlink))
+ goto err_cancel_msg;
+
+ req.msg = msg;
+ err = devlink->ops->info_get(devlink, &req, extack);
+ if (err)
+ goto err_cancel_msg;
+
+ genlmsg_end(msg, hdr);
+ return 0;
+
+err_cancel_msg:
+ genlmsg_cancel(msg, hdr);
+ return err;
+}
+
+static int devlink_nl_cmd_info_get_doit(struct sk_buff *skb,
+ struct genl_info *info)
+{
+ struct devlink *devlink = info->user_ptr[0];
+ struct sk_buff *msg;
+ int err;
+
+ if (!devlink->ops->info_get)
+ return -EOPNOTSUPP;
+
+ msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
+ if (!msg)
+ return -ENOMEM;
+
+ err = devlink_nl_info_fill(msg, devlink, DEVLINK_CMD_INFO_GET,
+ info->snd_portid, info->snd_seq, 0,
+ info->extack);
+ if (err) {
+ nlmsg_free(msg);
+ return err;
+ }
+
+ return genlmsg_reply(msg, info);
+}
+
+static int devlink_nl_cmd_info_get_dumpit(struct sk_buff *msg,
+ struct netlink_callback *cb)
+{
+ struct devlink *devlink;
+ int start = cb->args[0];
+ unsigned long index;
+ int idx = 0;
+ int err = 0;
+
+ devlinks_xa_for_each_registered_get(sock_net(msg->sk), index, devlink) {
+ if (idx < start || !devlink->ops->info_get)
+ goto inc;
+
+ devl_lock(devlink);
+ err = devlink_nl_info_fill(msg, devlink, DEVLINK_CMD_INFO_GET,
+ NETLINK_CB(cb->skb).portid,
+ cb->nlh->nlmsg_seq, NLM_F_MULTI,
+ cb->extack);
+ devl_unlock(devlink);
+ if (err == -EOPNOTSUPP)
+ err = 0;
+ else if (err) {
+ devlink_put(devlink);
+ break;
+ }
+inc:
+ idx++;
+ devlink_put(devlink);
+ }
+
+ if (err != -EMSGSIZE)
+ return err;
+
+ cb->args[0] = idx;
+ return msg->len;
+}
+
+struct devlink_fmsg_item {
+ struct list_head list;
+ int attrtype;
+ u8 nla_type;
+ u16 len;
+ int value[];
+};
+
+struct devlink_fmsg {
+ struct list_head item_list;
+ bool putting_binary; /* This flag forces enclosing of binary data
+ * in an array brackets. It forces using
+ * of designated API:
+ * devlink_fmsg_binary_pair_nest_start()
+ * devlink_fmsg_binary_pair_nest_end()
+ */
+};
+
+static struct devlink_fmsg *devlink_fmsg_alloc(void)
+{
+ struct devlink_fmsg *fmsg;
+
+ fmsg = kzalloc(sizeof(*fmsg), GFP_KERNEL);
+ if (!fmsg)
+ return NULL;
+
+ INIT_LIST_HEAD(&fmsg->item_list);
+
+ return fmsg;
+}
+
+static void devlink_fmsg_free(struct devlink_fmsg *fmsg)
+{
+ struct devlink_fmsg_item *item, *tmp;
+
+ list_for_each_entry_safe(item, tmp, &fmsg->item_list, list) {
+ list_del(&item->list);
+ kfree(item);
+ }
+ kfree(fmsg);
+}
+
+static int devlink_fmsg_nest_common(struct devlink_fmsg *fmsg,
+ int attrtype)
+{
+ struct devlink_fmsg_item *item;
+
+ item = kzalloc(sizeof(*item), GFP_KERNEL);
+ if (!item)
+ return -ENOMEM;
+
+ item->attrtype = attrtype;
+ list_add_tail(&item->list, &fmsg->item_list);
+
+ return 0;
+}
+
+int devlink_fmsg_obj_nest_start(struct devlink_fmsg *fmsg)
+{
+ if (fmsg->putting_binary)
+ return -EINVAL;
+
+ return devlink_fmsg_nest_common(fmsg, DEVLINK_ATTR_FMSG_OBJ_NEST_START);
+}
+EXPORT_SYMBOL_GPL(devlink_fmsg_obj_nest_start);
+
+static int devlink_fmsg_nest_end(struct devlink_fmsg *fmsg)
+{
+ if (fmsg->putting_binary)
+ return -EINVAL;
+
+ return devlink_fmsg_nest_common(fmsg, DEVLINK_ATTR_FMSG_NEST_END);
+}
+
+int devlink_fmsg_obj_nest_end(struct devlink_fmsg *fmsg)
+{
+ if (fmsg->putting_binary)
+ return -EINVAL;
+
+ return devlink_fmsg_nest_end(fmsg);
+}
+EXPORT_SYMBOL_GPL(devlink_fmsg_obj_nest_end);
+
+#define DEVLINK_FMSG_MAX_SIZE (GENLMSG_DEFAULT_SIZE - GENL_HDRLEN - NLA_HDRLEN)
+
+static int devlink_fmsg_put_name(struct devlink_fmsg *fmsg, const char *name)
+{
+ struct devlink_fmsg_item *item;
+
+ if (fmsg->putting_binary)
+ return -EINVAL;
+
+ if (strlen(name) + 1 > DEVLINK_FMSG_MAX_SIZE)
+ return -EMSGSIZE;
+
+ item = kzalloc(sizeof(*item) + strlen(name) + 1, GFP_KERNEL);
+ if (!item)
+ return -ENOMEM;
+
+ item->nla_type = NLA_NUL_STRING;
+ item->len = strlen(name) + 1;
+ item->attrtype = DEVLINK_ATTR_FMSG_OBJ_NAME;
+ memcpy(&item->value, name, item->len);
+ list_add_tail(&item->list, &fmsg->item_list);
+
+ return 0;
+}
+
+int devlink_fmsg_pair_nest_start(struct devlink_fmsg *fmsg, const char *name)
+{
+ int err;
+
+ if (fmsg->putting_binary)
+ return -EINVAL;
+
+ err = devlink_fmsg_nest_common(fmsg, DEVLINK_ATTR_FMSG_PAIR_NEST_START);
+ if (err)
+ return err;
+
+ err = devlink_fmsg_put_name(fmsg, name);
+ if (err)
+ return err;
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(devlink_fmsg_pair_nest_start);
+
+int devlink_fmsg_pair_nest_end(struct devlink_fmsg *fmsg)
+{
+ if (fmsg->putting_binary)
+ return -EINVAL;
+
+ return devlink_fmsg_nest_end(fmsg);
+}
+EXPORT_SYMBOL_GPL(devlink_fmsg_pair_nest_end);
+
+int devlink_fmsg_arr_pair_nest_start(struct devlink_fmsg *fmsg,
+ const char *name)
+{
+ int err;
+
+ if (fmsg->putting_binary)
+ return -EINVAL;
+
+ err = devlink_fmsg_pair_nest_start(fmsg, name);
+ if (err)
+ return err;
+
+ err = devlink_fmsg_nest_common(fmsg, DEVLINK_ATTR_FMSG_ARR_NEST_START);
+ if (err)
+ return err;
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(devlink_fmsg_arr_pair_nest_start);
+
+int devlink_fmsg_arr_pair_nest_end(struct devlink_fmsg *fmsg)
+{
+ int err;
+
+ if (fmsg->putting_binary)
+ return -EINVAL;
+
+ err = devlink_fmsg_nest_end(fmsg);
+ if (err)
+ return err;
+
+ err = devlink_fmsg_nest_end(fmsg);
+ if (err)
+ return err;
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(devlink_fmsg_arr_pair_nest_end);
+
+int devlink_fmsg_binary_pair_nest_start(struct devlink_fmsg *fmsg,
+ const char *name)
+{
+ int err;
+
+ err = devlink_fmsg_arr_pair_nest_start(fmsg, name);
+ if (err)
+ return err;
+
+ fmsg->putting_binary = true;
+ return err;
+}
+EXPORT_SYMBOL_GPL(devlink_fmsg_binary_pair_nest_start);
+
+int devlink_fmsg_binary_pair_nest_end(struct devlink_fmsg *fmsg)
+{
+ if (!fmsg->putting_binary)
+ return -EINVAL;
+
+ fmsg->putting_binary = false;
+ return devlink_fmsg_arr_pair_nest_end(fmsg);
+}
+EXPORT_SYMBOL_GPL(devlink_fmsg_binary_pair_nest_end);
+
+static int devlink_fmsg_put_value(struct devlink_fmsg *fmsg,
+ const void *value, u16 value_len,
+ u8 value_nla_type)
+{
+ struct devlink_fmsg_item *item;
+
+ if (value_len > DEVLINK_FMSG_MAX_SIZE)
+ return -EMSGSIZE;
+
+ item = kzalloc(sizeof(*item) + value_len, GFP_KERNEL);
+ if (!item)
+ return -ENOMEM;
+
+ item->nla_type = value_nla_type;
+ item->len = value_len;
+ item->attrtype = DEVLINK_ATTR_FMSG_OBJ_VALUE_DATA;
+ memcpy(&item->value, value, item->len);
+ list_add_tail(&item->list, &fmsg->item_list);
+
+ return 0;
+}
+
+static int devlink_fmsg_bool_put(struct devlink_fmsg *fmsg, bool value)
+{
+ if (fmsg->putting_binary)
+ return -EINVAL;
+
+ return devlink_fmsg_put_value(fmsg, &value, sizeof(value), NLA_FLAG);
+}
+
+static int devlink_fmsg_u8_put(struct devlink_fmsg *fmsg, u8 value)
+{
+ if (fmsg->putting_binary)
+ return -EINVAL;
+
+ return devlink_fmsg_put_value(fmsg, &value, sizeof(value), NLA_U8);
+}
+
+int devlink_fmsg_u32_put(struct devlink_fmsg *fmsg, u32 value)
+{
+ if (fmsg->putting_binary)
+ return -EINVAL;
+
+ return devlink_fmsg_put_value(fmsg, &value, sizeof(value), NLA_U32);
+}
+EXPORT_SYMBOL_GPL(devlink_fmsg_u32_put);
+
+static int devlink_fmsg_u64_put(struct devlink_fmsg *fmsg, u64 value)
+{
+ if (fmsg->putting_binary)
+ return -EINVAL;
+
+ return devlink_fmsg_put_value(fmsg, &value, sizeof(value), NLA_U64);
+}
+
+int devlink_fmsg_string_put(struct devlink_fmsg *fmsg, const char *value)
+{
+ if (fmsg->putting_binary)
+ return -EINVAL;
+
+ return devlink_fmsg_put_value(fmsg, value, strlen(value) + 1,
+ NLA_NUL_STRING);
+}
+EXPORT_SYMBOL_GPL(devlink_fmsg_string_put);
+
+int devlink_fmsg_binary_put(struct devlink_fmsg *fmsg, const void *value,
+ u16 value_len)
+{
+ if (!fmsg->putting_binary)
+ return -EINVAL;
+
+ return devlink_fmsg_put_value(fmsg, value, value_len, NLA_BINARY);
+}
+EXPORT_SYMBOL_GPL(devlink_fmsg_binary_put);
+
+int devlink_fmsg_bool_pair_put(struct devlink_fmsg *fmsg, const char *name,
+ bool value)
+{
+ int err;
+
+ err = devlink_fmsg_pair_nest_start(fmsg, name);
+ if (err)
+ return err;
+
+ err = devlink_fmsg_bool_put(fmsg, value);
+ if (err)
+ return err;
+
+ err = devlink_fmsg_pair_nest_end(fmsg);
+ if (err)
+ return err;
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(devlink_fmsg_bool_pair_put);
+
+int devlink_fmsg_u8_pair_put(struct devlink_fmsg *fmsg, const char *name,
+ u8 value)
+{
+ int err;
+
+ err = devlink_fmsg_pair_nest_start(fmsg, name);
+ if (err)
+ return err;
+
+ err = devlink_fmsg_u8_put(fmsg, value);
+ if (err)
+ return err;
+
+ err = devlink_fmsg_pair_nest_end(fmsg);
+ if (err)
+ return err;
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(devlink_fmsg_u8_pair_put);
+
+int devlink_fmsg_u32_pair_put(struct devlink_fmsg *fmsg, const char *name,
+ u32 value)
+{
+ int err;
+
+ err = devlink_fmsg_pair_nest_start(fmsg, name);
+ if (err)
+ return err;
+
+ err = devlink_fmsg_u32_put(fmsg, value);
+ if (err)
+ return err;
+
+ err = devlink_fmsg_pair_nest_end(fmsg);
+ if (err)
+ return err;
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(devlink_fmsg_u32_pair_put);
+
+int devlink_fmsg_u64_pair_put(struct devlink_fmsg *fmsg, const char *name,
+ u64 value)
+{
+ int err;
+
+ err = devlink_fmsg_pair_nest_start(fmsg, name);
+ if (err)
+ return err;
+
+ err = devlink_fmsg_u64_put(fmsg, value);
+ if (err)
+ return err;
+
+ err = devlink_fmsg_pair_nest_end(fmsg);
+ if (err)
+ return err;
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(devlink_fmsg_u64_pair_put);
+
+int devlink_fmsg_string_pair_put(struct devlink_fmsg *fmsg, const char *name,
+ const char *value)
+{
+ int err;
+
+ err = devlink_fmsg_pair_nest_start(fmsg, name);
+ if (err)
+ return err;
+
+ err = devlink_fmsg_string_put(fmsg, value);
+ if (err)
+ return err;
+
+ err = devlink_fmsg_pair_nest_end(fmsg);
+ if (err)
+ return err;
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(devlink_fmsg_string_pair_put);
+
+int devlink_fmsg_binary_pair_put(struct devlink_fmsg *fmsg, const char *name,
+ const void *value, u32 value_len)
+{
+ u32 data_size;
+ int end_err;
+ u32 offset;
+ int err;
+
+ err = devlink_fmsg_binary_pair_nest_start(fmsg, name);
+ if (err)
+ return err;
+
+ for (offset = 0; offset < value_len; offset += data_size) {
+ data_size = value_len - offset;
+ if (data_size > DEVLINK_FMSG_MAX_SIZE)
+ data_size = DEVLINK_FMSG_MAX_SIZE;
+ err = devlink_fmsg_binary_put(fmsg, value + offset, data_size);
+ if (err)
+ break;
+ /* Exit from loop with a break (instead of
+ * return) to make sure putting_binary is turned off in
+ * devlink_fmsg_binary_pair_nest_end
+ */
+ }
+
+ end_err = devlink_fmsg_binary_pair_nest_end(fmsg);
+ if (end_err)
+ err = end_err;
+
+ return err;
+}
+EXPORT_SYMBOL_GPL(devlink_fmsg_binary_pair_put);
+
+static int
+devlink_fmsg_item_fill_type(struct devlink_fmsg_item *msg, struct sk_buff *skb)
+{
+ switch (msg->nla_type) {
+ case NLA_FLAG:
+ case NLA_U8:
+ case NLA_U32:
+ case NLA_U64:
+ case NLA_NUL_STRING:
+ case NLA_BINARY:
+ return nla_put_u8(skb, DEVLINK_ATTR_FMSG_OBJ_VALUE_TYPE,
+ msg->nla_type);
+ default:
+ return -EINVAL;
+ }
+}
+
+static int
+devlink_fmsg_item_fill_data(struct devlink_fmsg_item *msg, struct sk_buff *skb)
+{
+ int attrtype = DEVLINK_ATTR_FMSG_OBJ_VALUE_DATA;
+ u8 tmp;
+
+ switch (msg->nla_type) {
+ case NLA_FLAG:
+ /* Always provide flag data, regardless of its value */
+ tmp = *(bool *) msg->value;
+
+ return nla_put_u8(skb, attrtype, tmp);
+ case NLA_U8:
+ return nla_put_u8(skb, attrtype, *(u8 *) msg->value);
+ case NLA_U32:
+ return nla_put_u32(skb, attrtype, *(u32 *) msg->value);
+ case NLA_U64:
+ return nla_put_u64_64bit(skb, attrtype, *(u64 *) msg->value,
+ DEVLINK_ATTR_PAD);
+ case NLA_NUL_STRING:
+ return nla_put_string(skb, attrtype, (char *) &msg->value);
+ case NLA_BINARY:
+ return nla_put(skb, attrtype, msg->len, (void *) &msg->value);
+ default:
+ return -EINVAL;
+ }
+}
+
+static int
+devlink_fmsg_prepare_skb(struct devlink_fmsg *fmsg, struct sk_buff *skb,
+ int *start)
+{
+ struct devlink_fmsg_item *item;
+ struct nlattr *fmsg_nlattr;
+ int i = 0;
+ int err;
+
+ fmsg_nlattr = nla_nest_start_noflag(skb, DEVLINK_ATTR_FMSG);
+ if (!fmsg_nlattr)
+ return -EMSGSIZE;
+
+ list_for_each_entry(item, &fmsg->item_list, list) {
+ if (i < *start) {
+ i++;
+ continue;
+ }
+
+ switch (item->attrtype) {
+ case DEVLINK_ATTR_FMSG_OBJ_NEST_START:
+ case DEVLINK_ATTR_FMSG_PAIR_NEST_START:
+ case DEVLINK_ATTR_FMSG_ARR_NEST_START:
+ case DEVLINK_ATTR_FMSG_NEST_END:
+ err = nla_put_flag(skb, item->attrtype);
+ break;
+ case DEVLINK_ATTR_FMSG_OBJ_VALUE_DATA:
+ err = devlink_fmsg_item_fill_type(item, skb);
+ if (err)
+ break;
+ err = devlink_fmsg_item_fill_data(item, skb);
+ break;
+ case DEVLINK_ATTR_FMSG_OBJ_NAME:
+ err = nla_put_string(skb, item->attrtype,
+ (char *) &item->value);
+ break;
+ default:
+ err = -EINVAL;
+ break;
+ }
+ if (!err)
+ *start = ++i;
+ else
+ break;
+ }
+
+ nla_nest_end(skb, fmsg_nlattr);
+ return err;
+}
+
+static int devlink_fmsg_snd(struct devlink_fmsg *fmsg,
+ struct genl_info *info,
+ enum devlink_command cmd, int flags)
+{
+ struct nlmsghdr *nlh;
+ struct sk_buff *skb;
+ bool last = false;
+ int index = 0;
+ void *hdr;
+ int err;
+
+ while (!last) {
+ int tmp_index = index;
+
+ skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_KERNEL);
+ if (!skb)
+ return -ENOMEM;
+
+ hdr = genlmsg_put(skb, info->snd_portid, info->snd_seq,
+ &devlink_nl_family, flags | NLM_F_MULTI, cmd);
+ if (!hdr) {
+ err = -EMSGSIZE;
+ goto nla_put_failure;
+ }
+
+ err = devlink_fmsg_prepare_skb(fmsg, skb, &index);
+ if (!err)
+ last = true;
+ else if (err != -EMSGSIZE || tmp_index == index)
+ goto nla_put_failure;
+
+ genlmsg_end(skb, hdr);
+ err = genlmsg_reply(skb, info);
+ if (err)
+ return err;
+ }
+
+ skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_KERNEL);
+ if (!skb)
+ return -ENOMEM;
+ nlh = nlmsg_put(skb, info->snd_portid, info->snd_seq,
+ NLMSG_DONE, 0, flags | NLM_F_MULTI);
+ if (!nlh) {
+ err = -EMSGSIZE;
+ goto nla_put_failure;
+ }
+
+ return genlmsg_reply(skb, info);
+
+nla_put_failure:
+ nlmsg_free(skb);
+ return err;
+}
+
+static int devlink_fmsg_dumpit(struct devlink_fmsg *fmsg, struct sk_buff *skb,
+ struct netlink_callback *cb,
+ enum devlink_command cmd)
+{
+ int index = cb->args[0];
+ int tmp_index = index;
+ void *hdr;
+ int err;
+
+ hdr = genlmsg_put(skb, NETLINK_CB(cb->skb).portid, cb->nlh->nlmsg_seq,
+ &devlink_nl_family, NLM_F_ACK | NLM_F_MULTI, cmd);
+ if (!hdr) {
+ err = -EMSGSIZE;
+ goto nla_put_failure;
+ }
+
+ err = devlink_fmsg_prepare_skb(fmsg, skb, &index);
+ if ((err && err != -EMSGSIZE) || tmp_index == index)
+ goto nla_put_failure;
+
+ cb->args[0] = index;
+ genlmsg_end(skb, hdr);
+ return skb->len;
+
+nla_put_failure:
+ genlmsg_cancel(skb, hdr);
+ return err;
+}
+
+struct devlink_health_reporter {
+ struct list_head list;
+ void *priv;
+ const struct devlink_health_reporter_ops *ops;
+ struct devlink *devlink;
+ struct devlink_port *devlink_port;
+ struct devlink_fmsg *dump_fmsg;
+ struct mutex dump_lock; /* lock parallel read/write from dump buffers */
+ u64 graceful_period;
+ bool auto_recover;
+ bool auto_dump;
+ u8 health_state;
+ u64 dump_ts;
+ u64 dump_real_ts;
+ u64 error_count;
+ u64 recovery_count;
+ u64 last_recovery_ts;
+ refcount_t refcount;
+};
+
+void *
+devlink_health_reporter_priv(struct devlink_health_reporter *reporter)
+{
+ return reporter->priv;
+}
+EXPORT_SYMBOL_GPL(devlink_health_reporter_priv);
+
+static struct devlink_health_reporter *
+__devlink_health_reporter_find_by_name(struct list_head *reporter_list,
+ struct mutex *list_lock,
+ const char *reporter_name)
+{
+ struct devlink_health_reporter *reporter;
+
+ lockdep_assert_held(list_lock);
+ list_for_each_entry(reporter, reporter_list, list)
+ if (!strcmp(reporter->ops->name, reporter_name))
+ return reporter;
+ return NULL;
+}
+
+static struct devlink_health_reporter *
+devlink_health_reporter_find_by_name(struct devlink *devlink,
+ const char *reporter_name)
+{
+ return __devlink_health_reporter_find_by_name(&devlink->reporter_list,
+ &devlink->reporters_lock,
+ reporter_name);
+}
+
+static struct devlink_health_reporter *
+devlink_port_health_reporter_find_by_name(struct devlink_port *devlink_port,
+ const char *reporter_name)
+{
+ return __devlink_health_reporter_find_by_name(&devlink_port->reporter_list,
+ &devlink_port->reporters_lock,
+ reporter_name);
+}
+
+static struct devlink_health_reporter *
+__devlink_health_reporter_create(struct devlink *devlink,
+ const struct devlink_health_reporter_ops *ops,
+ u64 graceful_period, void *priv)
+{
+ struct devlink_health_reporter *reporter;
+
+ if (WARN_ON(graceful_period && !ops->recover))
+ return ERR_PTR(-EINVAL);
+
+ reporter = kzalloc(sizeof(*reporter), GFP_KERNEL);
+ if (!reporter)
+ return ERR_PTR(-ENOMEM);
+
+ reporter->priv = priv;
+ reporter->ops = ops;
+ reporter->devlink = devlink;
+ reporter->graceful_period = graceful_period;
+ reporter->auto_recover = !!ops->recover;
+ reporter->auto_dump = !!ops->dump;
+ mutex_init(&reporter->dump_lock);
+ refcount_set(&reporter->refcount, 1);
+ return reporter;
+}
+
+/**
+ * devlink_port_health_reporter_create - create devlink health reporter for
+ * specified port instance
+ *
+ * @port: devlink_port which should contain the new reporter
+ * @ops: ops
+ * @graceful_period: to avoid recovery loops, in msecs
+ * @priv: priv
+ */
+struct devlink_health_reporter *
+devlink_port_health_reporter_create(struct devlink_port *port,
+ const struct devlink_health_reporter_ops *ops,
+ u64 graceful_period, void *priv)
+{
+ struct devlink_health_reporter *reporter;
+
+ mutex_lock(&port->reporters_lock);
+ if (__devlink_health_reporter_find_by_name(&port->reporter_list,
+ &port->reporters_lock, ops->name)) {
+ reporter = ERR_PTR(-EEXIST);
+ goto unlock;
+ }
+
+ reporter = __devlink_health_reporter_create(port->devlink, ops,
+ graceful_period, priv);
+ if (IS_ERR(reporter))
+ goto unlock;
+
+ reporter->devlink_port = port;
+ list_add_tail(&reporter->list, &port->reporter_list);
+unlock:
+ mutex_unlock(&port->reporters_lock);
+ return reporter;
+}
+EXPORT_SYMBOL_GPL(devlink_port_health_reporter_create);
+
+/**
+ * devlink_health_reporter_create - create devlink health reporter
+ *
+ * @devlink: devlink
+ * @ops: ops
+ * @graceful_period: to avoid recovery loops, in msecs
+ * @priv: priv
+ */
+struct devlink_health_reporter *
+devlink_health_reporter_create(struct devlink *devlink,
+ const struct devlink_health_reporter_ops *ops,
+ u64 graceful_period, void *priv)
+{
+ struct devlink_health_reporter *reporter;
+
+ mutex_lock(&devlink->reporters_lock);
+ if (devlink_health_reporter_find_by_name(devlink, ops->name)) {
+ reporter = ERR_PTR(-EEXIST);
+ goto unlock;
+ }
+
+ reporter = __devlink_health_reporter_create(devlink, ops,
+ graceful_period, priv);
+ if (IS_ERR(reporter))
+ goto unlock;
+
+ list_add_tail(&reporter->list, &devlink->reporter_list);
+unlock:
+ mutex_unlock(&devlink->reporters_lock);
+ return reporter;
+}
+EXPORT_SYMBOL_GPL(devlink_health_reporter_create);
+
+static void
+devlink_health_reporter_free(struct devlink_health_reporter *reporter)
+{
+ mutex_destroy(&reporter->dump_lock);
+ if (reporter->dump_fmsg)
+ devlink_fmsg_free(reporter->dump_fmsg);
+ kfree(reporter);
+}
+
+static void
+devlink_health_reporter_put(struct devlink_health_reporter *reporter)
+{
+ if (refcount_dec_and_test(&reporter->refcount))
+ devlink_health_reporter_free(reporter);
+}
+
+static void
+__devlink_health_reporter_destroy(struct devlink_health_reporter *reporter)
+{
+ list_del(&reporter->list);
+ devlink_health_reporter_put(reporter);
+}
+
+/**
+ * devlink_health_reporter_destroy - destroy devlink health reporter
+ *
+ * @reporter: devlink health reporter to destroy
+ */
+void
+devlink_health_reporter_destroy(struct devlink_health_reporter *reporter)
+{
+ struct mutex *lock = &reporter->devlink->reporters_lock;
+
+ mutex_lock(lock);
+ __devlink_health_reporter_destroy(reporter);
+ mutex_unlock(lock);
+}
+EXPORT_SYMBOL_GPL(devlink_health_reporter_destroy);
+
+/**
+ * devlink_port_health_reporter_destroy - destroy devlink port health reporter
+ *
+ * @reporter: devlink health reporter to destroy
+ */
+void
+devlink_port_health_reporter_destroy(struct devlink_health_reporter *reporter)
+{
+ struct mutex *lock = &reporter->devlink_port->reporters_lock;
+
+ mutex_lock(lock);
+ __devlink_health_reporter_destroy(reporter);
+ mutex_unlock(lock);
+}
+EXPORT_SYMBOL_GPL(devlink_port_health_reporter_destroy);
+
+static int
+devlink_nl_health_reporter_fill(struct sk_buff *msg,
+ struct devlink_health_reporter *reporter,
+ enum devlink_command cmd, u32 portid,
+ u32 seq, int flags)
+{
+ struct devlink *devlink = reporter->devlink;
+ struct nlattr *reporter_attr;
+ void *hdr;
+
+ hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
+ if (!hdr)
+ return -EMSGSIZE;
+
+ if (devlink_nl_put_handle(msg, devlink))
+ goto genlmsg_cancel;
+
+ if (reporter->devlink_port) {
+ if (nla_put_u32(msg, DEVLINK_ATTR_PORT_INDEX, reporter->devlink_port->index))
+ goto genlmsg_cancel;
+ }
+ reporter_attr = nla_nest_start_noflag(msg,
+ DEVLINK_ATTR_HEALTH_REPORTER);
+ if (!reporter_attr)
+ goto genlmsg_cancel;
+ if (nla_put_string(msg, DEVLINK_ATTR_HEALTH_REPORTER_NAME,
+ reporter->ops->name))
+ goto reporter_nest_cancel;
+ if (nla_put_u8(msg, DEVLINK_ATTR_HEALTH_REPORTER_STATE,
+ reporter->health_state))
+ goto reporter_nest_cancel;
+ if (nla_put_u64_64bit(msg, DEVLINK_ATTR_HEALTH_REPORTER_ERR_COUNT,
+ reporter->error_count, DEVLINK_ATTR_PAD))
+ goto reporter_nest_cancel;
+ if (nla_put_u64_64bit(msg, DEVLINK_ATTR_HEALTH_REPORTER_RECOVER_COUNT,
+ reporter->recovery_count, DEVLINK_ATTR_PAD))
+ goto reporter_nest_cancel;
+ if (reporter->ops->recover &&
+ nla_put_u64_64bit(msg, DEVLINK_ATTR_HEALTH_REPORTER_GRACEFUL_PERIOD,
+ reporter->graceful_period,
+ DEVLINK_ATTR_PAD))
+ goto reporter_nest_cancel;
+ if (reporter->ops->recover &&
+ nla_put_u8(msg, DEVLINK_ATTR_HEALTH_REPORTER_AUTO_RECOVER,
+ reporter->auto_recover))
+ goto reporter_nest_cancel;
+ if (reporter->dump_fmsg &&
+ nla_put_u64_64bit(msg, DEVLINK_ATTR_HEALTH_REPORTER_DUMP_TS,
+ jiffies_to_msecs(reporter->dump_ts),
+ DEVLINK_ATTR_PAD))
+ goto reporter_nest_cancel;
+ if (reporter->dump_fmsg &&
+ nla_put_u64_64bit(msg, DEVLINK_ATTR_HEALTH_REPORTER_DUMP_TS_NS,
+ reporter->dump_real_ts, DEVLINK_ATTR_PAD))
+ goto reporter_nest_cancel;
+ if (reporter->ops->dump &&
+ nla_put_u8(msg, DEVLINK_ATTR_HEALTH_REPORTER_AUTO_DUMP,
+ reporter->auto_dump))
+ goto reporter_nest_cancel;
+
+ nla_nest_end(msg, reporter_attr);
+ genlmsg_end(msg, hdr);
+ return 0;
+
+reporter_nest_cancel:
+ nla_nest_end(msg, reporter_attr);
+genlmsg_cancel:
+ genlmsg_cancel(msg, hdr);
+ return -EMSGSIZE;
+}
+
+static void devlink_recover_notify(struct devlink_health_reporter *reporter,
+ enum devlink_command cmd)
+{
+ struct devlink *devlink = reporter->devlink;
+ struct sk_buff *msg;
+ int err;
+
+ WARN_ON(cmd != DEVLINK_CMD_HEALTH_REPORTER_RECOVER);
+ WARN_ON(!xa_get_mark(&devlinks, devlink->index, DEVLINK_REGISTERED));
+
+ msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
+ if (!msg)
+ return;
+
+ err = devlink_nl_health_reporter_fill(msg, reporter, cmd, 0, 0, 0);
+ if (err) {
+ nlmsg_free(msg);
+ return;
+ }
+
+ genlmsg_multicast_netns(&devlink_nl_family, devlink_net(devlink), msg,
+ 0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL);
+}
+
+void
+devlink_health_reporter_recovery_done(struct devlink_health_reporter *reporter)
+{
+ reporter->recovery_count++;
+ reporter->last_recovery_ts = jiffies;
+}
+EXPORT_SYMBOL_GPL(devlink_health_reporter_recovery_done);
+
+static int
+devlink_health_reporter_recover(struct devlink_health_reporter *reporter,
+ void *priv_ctx, struct netlink_ext_ack *extack)
+{
+ int err;
+
+ if (reporter->health_state == DEVLINK_HEALTH_REPORTER_STATE_HEALTHY)
+ return 0;
+
+ if (!reporter->ops->recover)
+ return -EOPNOTSUPP;
+
+ err = reporter->ops->recover(reporter, priv_ctx, extack);
+ if (err)
+ return err;
+
+ devlink_health_reporter_recovery_done(reporter);
+ reporter->health_state = DEVLINK_HEALTH_REPORTER_STATE_HEALTHY;
+ devlink_recover_notify(reporter, DEVLINK_CMD_HEALTH_REPORTER_RECOVER);
+
+ return 0;
+}
+
+static void
+devlink_health_dump_clear(struct devlink_health_reporter *reporter)
+{
+ if (!reporter->dump_fmsg)
+ return;
+ devlink_fmsg_free(reporter->dump_fmsg);
+ reporter->dump_fmsg = NULL;
+}
+
+static int devlink_health_do_dump(struct devlink_health_reporter *reporter,
+ void *priv_ctx,
+ struct netlink_ext_ack *extack)
+{
+ int err;
+
+ if (!reporter->ops->dump)
+ return 0;
+
+ if (reporter->dump_fmsg)
+ return 0;
+
+ reporter->dump_fmsg = devlink_fmsg_alloc();
+ if (!reporter->dump_fmsg) {
+ err = -ENOMEM;
+ return err;
+ }
+
+ err = devlink_fmsg_obj_nest_start(reporter->dump_fmsg);
+ if (err)
+ goto dump_err;
+
+ err = reporter->ops->dump(reporter, reporter->dump_fmsg,
+ priv_ctx, extack);
+ if (err)
+ goto dump_err;
+
+ err = devlink_fmsg_obj_nest_end(reporter->dump_fmsg);
+ if (err)
+ goto dump_err;
+
+ reporter->dump_ts = jiffies;
+ reporter->dump_real_ts = ktime_get_real_ns();
+
+ return 0;
+
+dump_err:
+ devlink_health_dump_clear(reporter);
+ return err;
+}
+
+int devlink_health_report(struct devlink_health_reporter *reporter,
+ const char *msg, void *priv_ctx)
+{
+ enum devlink_health_reporter_state prev_health_state;
+ struct devlink *devlink = reporter->devlink;
+ unsigned long recover_ts_threshold;
+ int ret;
+
+ /* write a log message of the current error */
+ WARN_ON(!msg);
+ trace_devlink_health_report(devlink, reporter->ops->name, msg);
+ reporter->error_count++;
+ prev_health_state = reporter->health_state;
+ reporter->health_state = DEVLINK_HEALTH_REPORTER_STATE_ERROR;
+ devlink_recover_notify(reporter, DEVLINK_CMD_HEALTH_REPORTER_RECOVER);
+
+ /* abort if the previous error wasn't recovered */
+ recover_ts_threshold = reporter->last_recovery_ts +
+ msecs_to_jiffies(reporter->graceful_period);
+ if (reporter->auto_recover &&
+ (prev_health_state != DEVLINK_HEALTH_REPORTER_STATE_HEALTHY ||
+ (reporter->last_recovery_ts && reporter->recovery_count &&
+ time_is_after_jiffies(recover_ts_threshold)))) {
+ trace_devlink_health_recover_aborted(devlink,
+ reporter->ops->name,
+ reporter->health_state,
+ jiffies -
+ reporter->last_recovery_ts);
+ return -ECANCELED;
+ }
+
+ reporter->health_state = DEVLINK_HEALTH_REPORTER_STATE_ERROR;
+
+ if (reporter->auto_dump) {
+ mutex_lock(&reporter->dump_lock);
+ /* store current dump of current error, for later analysis */
+ devlink_health_do_dump(reporter, priv_ctx, NULL);
+ mutex_unlock(&reporter->dump_lock);
+ }
+
+ if (!reporter->auto_recover)
+ return 0;
+
+ devl_lock(devlink);
+ ret = devlink_health_reporter_recover(reporter, priv_ctx, NULL);
+ devl_unlock(devlink);
+
+ return ret;
+}
+EXPORT_SYMBOL_GPL(devlink_health_report);
+
+static struct devlink_health_reporter *
+devlink_health_reporter_get_from_attrs(struct devlink *devlink,
+ struct nlattr **attrs)
+{
+ struct devlink_health_reporter *reporter;
+ struct devlink_port *devlink_port;
+ char *reporter_name;
+
+ if (!attrs[DEVLINK_ATTR_HEALTH_REPORTER_NAME])
+ return NULL;
+
+ reporter_name = nla_data(attrs[DEVLINK_ATTR_HEALTH_REPORTER_NAME]);
+ devlink_port = devlink_port_get_from_attrs(devlink, attrs);
+ if (IS_ERR(devlink_port)) {
+ mutex_lock(&devlink->reporters_lock);
+ reporter = devlink_health_reporter_find_by_name(devlink, reporter_name);
+ if (reporter)
+ refcount_inc(&reporter->refcount);
+ mutex_unlock(&devlink->reporters_lock);
+ } else {
+ mutex_lock(&devlink_port->reporters_lock);
+ reporter = devlink_port_health_reporter_find_by_name(devlink_port, reporter_name);
+ if (reporter)
+ refcount_inc(&reporter->refcount);
+ mutex_unlock(&devlink_port->reporters_lock);
+ }
+
+ return reporter;
+}
+
+static struct devlink_health_reporter *
+devlink_health_reporter_get_from_info(struct devlink *devlink,
+ struct genl_info *info)
+{
+ return devlink_health_reporter_get_from_attrs(devlink, info->attrs);
+}
+
+static struct devlink_health_reporter *
+devlink_health_reporter_get_from_cb(struct netlink_callback *cb)
+{
+ const struct genl_dumpit_info *info = genl_dumpit_info(cb);
+ struct devlink_health_reporter *reporter;
+ struct nlattr **attrs = info->attrs;
+ struct devlink *devlink;
+
+ devlink = devlink_get_from_attrs(sock_net(cb->skb->sk), attrs);
+ if (IS_ERR(devlink))
+ return NULL;
+
+ reporter = devlink_health_reporter_get_from_attrs(devlink, attrs);
+ devlink_put(devlink);
+ return reporter;
+}
+
+void
+devlink_health_reporter_state_update(struct devlink_health_reporter *reporter,
+ enum devlink_health_reporter_state state)
+{
+ if (WARN_ON(state != DEVLINK_HEALTH_REPORTER_STATE_HEALTHY &&
+ state != DEVLINK_HEALTH_REPORTER_STATE_ERROR))
+ return;
+
+ if (reporter->health_state == state)
+ return;
+
+ reporter->health_state = state;
+ trace_devlink_health_reporter_state_update(reporter->devlink,
+ reporter->ops->name, state);
+ devlink_recover_notify(reporter, DEVLINK_CMD_HEALTH_REPORTER_RECOVER);
+}
+EXPORT_SYMBOL_GPL(devlink_health_reporter_state_update);
+
+static int devlink_nl_cmd_health_reporter_get_doit(struct sk_buff *skb,
+ struct genl_info *info)
+{
+ struct devlink *devlink = info->user_ptr[0];
+ struct devlink_health_reporter *reporter;
+ struct sk_buff *msg;
+ int err;
+
+ reporter = devlink_health_reporter_get_from_info(devlink, info);
+ if (!reporter)
+ return -EINVAL;
+
+ msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
+ if (!msg) {
+ err = -ENOMEM;
+ goto out;
+ }
+
+ err = devlink_nl_health_reporter_fill(msg, reporter,
+ DEVLINK_CMD_HEALTH_REPORTER_GET,
+ info->snd_portid, info->snd_seq,
+ 0);
+ if (err) {
+ nlmsg_free(msg);
+ goto out;
+ }
+
+ err = genlmsg_reply(msg, info);
+out:
+ devlink_health_reporter_put(reporter);
+ return err;
+}
+
+static int
+devlink_nl_cmd_health_reporter_get_dumpit(struct sk_buff *msg,
+ struct netlink_callback *cb)
+{
+ struct devlink_health_reporter *reporter;
+ struct devlink_port *port;
+ struct devlink *devlink;
+ int start = cb->args[0];
+ unsigned long index;
+ int idx = 0;
+ int err;
+
+ devlinks_xa_for_each_registered_get(sock_net(msg->sk), index, devlink) {
+ mutex_lock(&devlink->reporters_lock);
+ list_for_each_entry(reporter, &devlink->reporter_list,
+ list) {
+ if (idx < start) {
+ idx++;
+ continue;
+ }
+ err = devlink_nl_health_reporter_fill(
+ msg, reporter, DEVLINK_CMD_HEALTH_REPORTER_GET,
+ NETLINK_CB(cb->skb).portid, cb->nlh->nlmsg_seq,
+ NLM_F_MULTI);
+ if (err) {
+ mutex_unlock(&devlink->reporters_lock);
+ devlink_put(devlink);
+ goto out;
+ }
+ idx++;
+ }
+ mutex_unlock(&devlink->reporters_lock);
+ devlink_put(devlink);
+ }
+
+ devlinks_xa_for_each_registered_get(sock_net(msg->sk), index, devlink) {
+ devl_lock(devlink);
+ list_for_each_entry(port, &devlink->port_list, list) {
+ mutex_lock(&port->reporters_lock);
+ list_for_each_entry(reporter, &port->reporter_list, list) {
+ if (idx < start) {
+ idx++;
+ continue;
+ }
+ err = devlink_nl_health_reporter_fill(
+ msg, reporter,
+ DEVLINK_CMD_HEALTH_REPORTER_GET,
+ NETLINK_CB(cb->skb).portid,
+ cb->nlh->nlmsg_seq, NLM_F_MULTI);
+ if (err) {
+ mutex_unlock(&port->reporters_lock);
+ devl_unlock(devlink);
+ devlink_put(devlink);
+ goto out;
+ }
+ idx++;
+ }
+ mutex_unlock(&port->reporters_lock);
+ }
+ devl_unlock(devlink);
+ devlink_put(devlink);
+ }
+out:
+ cb->args[0] = idx;
+ return msg->len;
+}
+
+static int
+devlink_nl_cmd_health_reporter_set_doit(struct sk_buff *skb,
+ struct genl_info *info)
+{
+ struct devlink *devlink = info->user_ptr[0];
+ struct devlink_health_reporter *reporter;
+ int err;
+
+ reporter = devlink_health_reporter_get_from_info(devlink, info);
+ if (!reporter)
+ return -EINVAL;
+
+ if (!reporter->ops->recover &&
+ (info->attrs[DEVLINK_ATTR_HEALTH_REPORTER_GRACEFUL_PERIOD] ||
+ info->attrs[DEVLINK_ATTR_HEALTH_REPORTER_AUTO_RECOVER])) {
+ err = -EOPNOTSUPP;
+ goto out;
+ }
+ if (!reporter->ops->dump &&
+ info->attrs[DEVLINK_ATTR_HEALTH_REPORTER_AUTO_DUMP]) {
+ err = -EOPNOTSUPP;
+ goto out;
+ }
+
+ if (info->attrs[DEVLINK_ATTR_HEALTH_REPORTER_GRACEFUL_PERIOD])
+ reporter->graceful_period =
+ nla_get_u64(info->attrs[DEVLINK_ATTR_HEALTH_REPORTER_GRACEFUL_PERIOD]);
+
+ if (info->attrs[DEVLINK_ATTR_HEALTH_REPORTER_AUTO_RECOVER])
+ reporter->auto_recover =
+ nla_get_u8(info->attrs[DEVLINK_ATTR_HEALTH_REPORTER_AUTO_RECOVER]);
+
+ if (info->attrs[DEVLINK_ATTR_HEALTH_REPORTER_AUTO_DUMP])
+ reporter->auto_dump =
+ nla_get_u8(info->attrs[DEVLINK_ATTR_HEALTH_REPORTER_AUTO_DUMP]);
+
+ devlink_health_reporter_put(reporter);
+ return 0;
+out:
+ devlink_health_reporter_put(reporter);
+ return err;
+}
+
+static int devlink_nl_cmd_health_reporter_recover_doit(struct sk_buff *skb,
+ struct genl_info *info)
+{
+ struct devlink *devlink = info->user_ptr[0];
+ struct devlink_health_reporter *reporter;
+ int err;
+
+ reporter = devlink_health_reporter_get_from_info(devlink, info);
+ if (!reporter)
+ return -EINVAL;
+
+ err = devlink_health_reporter_recover(reporter, NULL, info->extack);
+
+ devlink_health_reporter_put(reporter);
+ return err;
+}
+
+static int devlink_nl_cmd_health_reporter_diagnose_doit(struct sk_buff *skb,
+ struct genl_info *info)
+{
+ struct devlink *devlink = info->user_ptr[0];
+ struct devlink_health_reporter *reporter;
+ struct devlink_fmsg *fmsg;
+ int err;
+
+ reporter = devlink_health_reporter_get_from_info(devlink, info);
+ if (!reporter)
+ return -EINVAL;
+
+ if (!reporter->ops->diagnose) {
+ devlink_health_reporter_put(reporter);
+ return -EOPNOTSUPP;
+ }
+
+ fmsg = devlink_fmsg_alloc();
+ if (!fmsg) {
+ devlink_health_reporter_put(reporter);
+ return -ENOMEM;
+ }
+
+ err = devlink_fmsg_obj_nest_start(fmsg);
+ if (err)
+ goto out;
+
+ err = reporter->ops->diagnose(reporter, fmsg, info->extack);
+ if (err)
+ goto out;
+
+ err = devlink_fmsg_obj_nest_end(fmsg);
+ if (err)
+ goto out;
+
+ err = devlink_fmsg_snd(fmsg, info,
+ DEVLINK_CMD_HEALTH_REPORTER_DIAGNOSE, 0);
+
+out:
+ devlink_fmsg_free(fmsg);
+ devlink_health_reporter_put(reporter);
+ return err;
+}
+
+static int
+devlink_nl_cmd_health_reporter_dump_get_dumpit(struct sk_buff *skb,
+ struct netlink_callback *cb)
+{
+ struct devlink_health_reporter *reporter;
+ u64 start = cb->args[0];
+ int err;
+
+ reporter = devlink_health_reporter_get_from_cb(cb);
+ if (!reporter)
+ return -EINVAL;
+
+ if (!reporter->ops->dump) {
+ err = -EOPNOTSUPP;
+ goto out;
+ }
+ mutex_lock(&reporter->dump_lock);
+ if (!start) {
+ err = devlink_health_do_dump(reporter, NULL, cb->extack);
+ if (err)
+ goto unlock;
+ cb->args[1] = reporter->dump_ts;
+ }
+ if (!reporter->dump_fmsg || cb->args[1] != reporter->dump_ts) {
+ NL_SET_ERR_MSG_MOD(cb->extack, "Dump trampled, please retry");
+ err = -EAGAIN;
+ goto unlock;
+ }
+
+ err = devlink_fmsg_dumpit(reporter->dump_fmsg, skb, cb,
+ DEVLINK_CMD_HEALTH_REPORTER_DUMP_GET);
+unlock:
+ mutex_unlock(&reporter->dump_lock);
+out:
+ devlink_health_reporter_put(reporter);
+ return err;
+}
+
+static int
+devlink_nl_cmd_health_reporter_dump_clear_doit(struct sk_buff *skb,
+ struct genl_info *info)
+{
+ struct devlink *devlink = info->user_ptr[0];
+ struct devlink_health_reporter *reporter;
+
+ reporter = devlink_health_reporter_get_from_info(devlink, info);
+ if (!reporter)
+ return -EINVAL;
+
+ if (!reporter->ops->dump) {
+ devlink_health_reporter_put(reporter);
+ return -EOPNOTSUPP;
+ }
+
+ mutex_lock(&reporter->dump_lock);
+ devlink_health_dump_clear(reporter);
+ mutex_unlock(&reporter->dump_lock);
+ devlink_health_reporter_put(reporter);
+ return 0;
+}
+
+static int devlink_nl_cmd_health_reporter_test_doit(struct sk_buff *skb,
+ struct genl_info *info)
+{
+ struct devlink *devlink = info->user_ptr[0];
+ struct devlink_health_reporter *reporter;
+ int err;
+
+ reporter = devlink_health_reporter_get_from_info(devlink, info);
+ if (!reporter)
+ return -EINVAL;
+
+ if (!reporter->ops->test) {
+ devlink_health_reporter_put(reporter);
+ return -EOPNOTSUPP;
+ }
+
+ err = reporter->ops->test(reporter, info->extack);
+
+ devlink_health_reporter_put(reporter);
+ return err;
+}
+
+struct devlink_stats {
+ u64_stats_t rx_bytes;
+ u64_stats_t rx_packets;
+ struct u64_stats_sync syncp;
+};
+
+/**
+ * struct devlink_trap_policer_item - Packet trap policer attributes.
+ * @policer: Immutable packet trap policer attributes.
+ * @rate: Rate in packets / sec.
+ * @burst: Burst size in packets.
+ * @list: trap_policer_list member.
+ *
+ * Describes packet trap policer attributes. Created by devlink during trap
+ * policer registration.
+ */
+struct devlink_trap_policer_item {
+ const struct devlink_trap_policer *policer;
+ u64 rate;
+ u64 burst;
+ struct list_head list;
+};
+
+/**
+ * struct devlink_trap_group_item - Packet trap group attributes.
+ * @group: Immutable packet trap group attributes.
+ * @policer_item: Associated policer item. Can be NULL.
+ * @list: trap_group_list member.
+ * @stats: Trap group statistics.
+ *
+ * Describes packet trap group attributes. Created by devlink during trap
+ * group registration.
+ */
+struct devlink_trap_group_item {
+ const struct devlink_trap_group *group;
+ struct devlink_trap_policer_item *policer_item;
+ struct list_head list;
+ struct devlink_stats __percpu *stats;
+};
+
+/**
+ * struct devlink_trap_item - Packet trap attributes.
+ * @trap: Immutable packet trap attributes.
+ * @group_item: Associated group item.
+ * @list: trap_list member.
+ * @action: Trap action.
+ * @stats: Trap statistics.
+ * @priv: Driver private information.
+ *
+ * Describes both mutable and immutable packet trap attributes. Created by
+ * devlink during trap registration and used for all trap related operations.
+ */
+struct devlink_trap_item {
+ const struct devlink_trap *trap;
+ struct devlink_trap_group_item *group_item;
+ struct list_head list;
+ enum devlink_trap_action action;
+ struct devlink_stats __percpu *stats;
+ void *priv;
+};
+
+static struct devlink_trap_policer_item *
+devlink_trap_policer_item_lookup(struct devlink *devlink, u32 id)
+{
+ struct devlink_trap_policer_item *policer_item;
+
+ list_for_each_entry(policer_item, &devlink->trap_policer_list, list) {
+ if (policer_item->policer->id == id)
+ return policer_item;
+ }
+
+ return NULL;
+}
+
+static struct devlink_trap_item *
+devlink_trap_item_lookup(struct devlink *devlink, const char *name)
+{
+ struct devlink_trap_item *trap_item;
+
+ list_for_each_entry(trap_item, &devlink->trap_list, list) {
+ if (!strcmp(trap_item->trap->name, name))
+ return trap_item;
+ }
+
+ return NULL;
+}
+
+static struct devlink_trap_item *
+devlink_trap_item_get_from_info(struct devlink *devlink,
+ struct genl_info *info)
+{
+ struct nlattr *attr;
+
+ if (!info->attrs[DEVLINK_ATTR_TRAP_NAME])
+ return NULL;
+ attr = info->attrs[DEVLINK_ATTR_TRAP_NAME];
+
+ return devlink_trap_item_lookup(devlink, nla_data(attr));
+}
+
+static int
+devlink_trap_action_get_from_info(struct genl_info *info,
+ enum devlink_trap_action *p_trap_action)
+{
+ u8 val;
+
+ val = nla_get_u8(info->attrs[DEVLINK_ATTR_TRAP_ACTION]);
+ switch (val) {
+ case DEVLINK_TRAP_ACTION_DROP:
+ case DEVLINK_TRAP_ACTION_TRAP:
+ case DEVLINK_TRAP_ACTION_MIRROR:
+ *p_trap_action = val;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static int devlink_trap_metadata_put(struct sk_buff *msg,
+ const struct devlink_trap *trap)
+{
+ struct nlattr *attr;
+
+ attr = nla_nest_start(msg, DEVLINK_ATTR_TRAP_METADATA);
+ if (!attr)
+ return -EMSGSIZE;
+
+ if ((trap->metadata_cap & DEVLINK_TRAP_METADATA_TYPE_F_IN_PORT) &&
+ nla_put_flag(msg, DEVLINK_ATTR_TRAP_METADATA_TYPE_IN_PORT))
+ goto nla_put_failure;
+ if ((trap->metadata_cap & DEVLINK_TRAP_METADATA_TYPE_F_FA_COOKIE) &&
+ nla_put_flag(msg, DEVLINK_ATTR_TRAP_METADATA_TYPE_FA_COOKIE))
+ goto nla_put_failure;
+
+ nla_nest_end(msg, attr);
+
+ return 0;
+
+nla_put_failure:
+ nla_nest_cancel(msg, attr);
+ return -EMSGSIZE;
+}
+
+static void devlink_trap_stats_read(struct devlink_stats __percpu *trap_stats,
+ struct devlink_stats *stats)
+{
+ int i;
+
+ memset(stats, 0, sizeof(*stats));
+ for_each_possible_cpu(i) {
+ struct devlink_stats *cpu_stats;
+ u64 rx_packets, rx_bytes;
+ unsigned int start;
+
+ cpu_stats = per_cpu_ptr(trap_stats, i);
+ do {
+ start = u64_stats_fetch_begin_irq(&cpu_stats->syncp);
+ rx_packets = u64_stats_read(&cpu_stats->rx_packets);
+ rx_bytes = u64_stats_read(&cpu_stats->rx_bytes);
+ } while (u64_stats_fetch_retry_irq(&cpu_stats->syncp, start));
+
+ u64_stats_add(&stats->rx_packets, rx_packets);
+ u64_stats_add(&stats->rx_bytes, rx_bytes);
+ }
+}
+
+static int
+devlink_trap_group_stats_put(struct sk_buff *msg,
+ struct devlink_stats __percpu *trap_stats)
+{
+ struct devlink_stats stats;
+ struct nlattr *attr;
+
+ devlink_trap_stats_read(trap_stats, &stats);
+
+ attr = nla_nest_start(msg, DEVLINK_ATTR_STATS);
+ if (!attr)
+ return -EMSGSIZE;
+
+ if (nla_put_u64_64bit(msg, DEVLINK_ATTR_STATS_RX_PACKETS,
+ u64_stats_read(&stats.rx_packets),
+ DEVLINK_ATTR_PAD))
+ goto nla_put_failure;
+
+ if (nla_put_u64_64bit(msg, DEVLINK_ATTR_STATS_RX_BYTES,
+ u64_stats_read(&stats.rx_bytes),
+ DEVLINK_ATTR_PAD))
+ goto nla_put_failure;
+
+ nla_nest_end(msg, attr);
+
+ return 0;
+
+nla_put_failure:
+ nla_nest_cancel(msg, attr);
+ return -EMSGSIZE;
+}
+
+static int devlink_trap_stats_put(struct sk_buff *msg, struct devlink *devlink,
+ const struct devlink_trap_item *trap_item)
+{
+ struct devlink_stats stats;
+ struct nlattr *attr;
+ u64 drops = 0;
+ int err;
+
+ if (devlink->ops->trap_drop_counter_get) {
+ err = devlink->ops->trap_drop_counter_get(devlink,
+ trap_item->trap,
+ &drops);
+ if (err)
+ return err;
+ }
+
+ devlink_trap_stats_read(trap_item->stats, &stats);
+
+ attr = nla_nest_start(msg, DEVLINK_ATTR_STATS);
+ if (!attr)
+ return -EMSGSIZE;
+
+ if (devlink->ops->trap_drop_counter_get &&
+ nla_put_u64_64bit(msg, DEVLINK_ATTR_STATS_RX_DROPPED, drops,
+ DEVLINK_ATTR_PAD))
+ goto nla_put_failure;
+
+ if (nla_put_u64_64bit(msg, DEVLINK_ATTR_STATS_RX_PACKETS,
+ u64_stats_read(&stats.rx_packets),
+ DEVLINK_ATTR_PAD))
+ goto nla_put_failure;
+
+ if (nla_put_u64_64bit(msg, DEVLINK_ATTR_STATS_RX_BYTES,
+ u64_stats_read(&stats.rx_bytes),
+ DEVLINK_ATTR_PAD))
+ goto nla_put_failure;
+
+ nla_nest_end(msg, attr);
+
+ return 0;
+
+nla_put_failure:
+ nla_nest_cancel(msg, attr);
+ return -EMSGSIZE;
+}
+
+static int devlink_nl_trap_fill(struct sk_buff *msg, struct devlink *devlink,
+ const struct devlink_trap_item *trap_item,
+ enum devlink_command cmd, u32 portid, u32 seq,
+ int flags)
+{
+ struct devlink_trap_group_item *group_item = trap_item->group_item;
+ void *hdr;
+ int err;
+
+ hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
+ if (!hdr)
+ return -EMSGSIZE;
+
+ if (devlink_nl_put_handle(msg, devlink))
+ goto nla_put_failure;
+
+ if (nla_put_string(msg, DEVLINK_ATTR_TRAP_GROUP_NAME,
+ group_item->group->name))
+ goto nla_put_failure;
+
+ if (nla_put_string(msg, DEVLINK_ATTR_TRAP_NAME, trap_item->trap->name))
+ goto nla_put_failure;
+
+ if (nla_put_u8(msg, DEVLINK_ATTR_TRAP_TYPE, trap_item->trap->type))
+ goto nla_put_failure;
+
+ if (trap_item->trap->generic &&
+ nla_put_flag(msg, DEVLINK_ATTR_TRAP_GENERIC))
+ goto nla_put_failure;
+
+ if (nla_put_u8(msg, DEVLINK_ATTR_TRAP_ACTION, trap_item->action))
+ goto nla_put_failure;
+
+ err = devlink_trap_metadata_put(msg, trap_item->trap);
+ if (err)
+ goto nla_put_failure;
+
+ err = devlink_trap_stats_put(msg, devlink, trap_item);
+ if (err)
+ goto nla_put_failure;
+
+ genlmsg_end(msg, hdr);
+
+ return 0;
+
+nla_put_failure:
+ genlmsg_cancel(msg, hdr);
+ return -EMSGSIZE;
+}
+
+static int devlink_nl_cmd_trap_get_doit(struct sk_buff *skb,
+ struct genl_info *info)
+{
+ struct netlink_ext_ack *extack = info->extack;
+ struct devlink *devlink = info->user_ptr[0];
+ struct devlink_trap_item *trap_item;
+ struct sk_buff *msg;
+ int err;
+
+ if (list_empty(&devlink->trap_list))
+ return -EOPNOTSUPP;
+
+ trap_item = devlink_trap_item_get_from_info(devlink, info);
+ if (!trap_item) {
+ NL_SET_ERR_MSG_MOD(extack, "Device did not register this trap");
+ return -ENOENT;
+ }
+
+ msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
+ if (!msg)
+ return -ENOMEM;
+
+ err = devlink_nl_trap_fill(msg, devlink, trap_item,
+ DEVLINK_CMD_TRAP_NEW, info->snd_portid,
+ info->snd_seq, 0);
+ if (err)
+ goto err_trap_fill;
+
+ return genlmsg_reply(msg, info);
+
+err_trap_fill:
+ nlmsg_free(msg);
+ return err;
+}
+
+static int devlink_nl_cmd_trap_get_dumpit(struct sk_buff *msg,
+ struct netlink_callback *cb)
+{
+ struct devlink_trap_item *trap_item;
+ struct devlink *devlink;
+ int start = cb->args[0];
+ unsigned long index;
+ int idx = 0;
+ int err;
+
+ devlinks_xa_for_each_registered_get(sock_net(msg->sk), index, devlink) {
+ devl_lock(devlink);
+ list_for_each_entry(trap_item, &devlink->trap_list, list) {
+ if (idx < start) {
+ idx++;
+ continue;
+ }
+ err = devlink_nl_trap_fill(msg, devlink, trap_item,
+ DEVLINK_CMD_TRAP_NEW,
+ NETLINK_CB(cb->skb).portid,
+ cb->nlh->nlmsg_seq,
+ NLM_F_MULTI);
+ if (err) {
+ devl_unlock(devlink);
+ devlink_put(devlink);
+ goto out;
+ }
+ idx++;
+ }
+ devl_unlock(devlink);
+ devlink_put(devlink);
+ }
+out:
+ cb->args[0] = idx;
+ return msg->len;
+}
+
+static int __devlink_trap_action_set(struct devlink *devlink,
+ struct devlink_trap_item *trap_item,
+ enum devlink_trap_action trap_action,
+ struct netlink_ext_ack *extack)
+{
+ int err;
+
+ if (trap_item->action != trap_action &&
+ trap_item->trap->type != DEVLINK_TRAP_TYPE_DROP) {
+ NL_SET_ERR_MSG_MOD(extack, "Cannot change action of non-drop traps. Skipping");
+ return 0;
+ }
+
+ err = devlink->ops->trap_action_set(devlink, trap_item->trap,
+ trap_action, extack);
+ if (err)
+ return err;
+
+ trap_item->action = trap_action;
+
+ return 0;
+}
+
+static int devlink_trap_action_set(struct devlink *devlink,
+ struct devlink_trap_item *trap_item,
+ struct genl_info *info)
+{
+ enum devlink_trap_action trap_action;
+ int err;
+
+ if (!info->attrs[DEVLINK_ATTR_TRAP_ACTION])
+ return 0;
+
+ err = devlink_trap_action_get_from_info(info, &trap_action);
+ if (err) {
+ NL_SET_ERR_MSG_MOD(info->extack, "Invalid trap action");
+ return -EINVAL;
+ }
+
+ return __devlink_trap_action_set(devlink, trap_item, trap_action,
+ info->extack);
+}
+
+static int devlink_nl_cmd_trap_set_doit(struct sk_buff *skb,
+ struct genl_info *info)
+{
+ struct netlink_ext_ack *extack = info->extack;
+ struct devlink *devlink = info->user_ptr[0];
+ struct devlink_trap_item *trap_item;
+
+ if (list_empty(&devlink->trap_list))
+ return -EOPNOTSUPP;
+
+ trap_item = devlink_trap_item_get_from_info(devlink, info);
+ if (!trap_item) {
+ NL_SET_ERR_MSG_MOD(extack, "Device did not register this trap");
+ return -ENOENT;
+ }
+
+ return devlink_trap_action_set(devlink, trap_item, info);
+}
+
+static struct devlink_trap_group_item *
+devlink_trap_group_item_lookup(struct devlink *devlink, const char *name)
+{
+ struct devlink_trap_group_item *group_item;
+
+ list_for_each_entry(group_item, &devlink->trap_group_list, list) {
+ if (!strcmp(group_item->group->name, name))
+ return group_item;
+ }
+
+ return NULL;
+}
+
+static struct devlink_trap_group_item *
+devlink_trap_group_item_lookup_by_id(struct devlink *devlink, u16 id)
+{
+ struct devlink_trap_group_item *group_item;
+
+ list_for_each_entry(group_item, &devlink->trap_group_list, list) {
+ if (group_item->group->id == id)
+ return group_item;
+ }
+
+ return NULL;
+}
+
+static struct devlink_trap_group_item *
+devlink_trap_group_item_get_from_info(struct devlink *devlink,
+ struct genl_info *info)
+{
+ char *name;
+
+ if (!info->attrs[DEVLINK_ATTR_TRAP_GROUP_NAME])
+ return NULL;
+ name = nla_data(info->attrs[DEVLINK_ATTR_TRAP_GROUP_NAME]);
+
+ return devlink_trap_group_item_lookup(devlink, name);
+}
+
+static int
+devlink_nl_trap_group_fill(struct sk_buff *msg, struct devlink *devlink,
+ const struct devlink_trap_group_item *group_item,
+ enum devlink_command cmd, u32 portid, u32 seq,
+ int flags)
+{
+ void *hdr;
+ int err;
+
+ hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
+ if (!hdr)
+ return -EMSGSIZE;
+
+ if (devlink_nl_put_handle(msg, devlink))
+ goto nla_put_failure;
+
+ if (nla_put_string(msg, DEVLINK_ATTR_TRAP_GROUP_NAME,
+ group_item->group->name))
+ goto nla_put_failure;
+
+ if (group_item->group->generic &&
+ nla_put_flag(msg, DEVLINK_ATTR_TRAP_GENERIC))
+ goto nla_put_failure;
+
+ if (group_item->policer_item &&
+ nla_put_u32(msg, DEVLINK_ATTR_TRAP_POLICER_ID,
+ group_item->policer_item->policer->id))
+ goto nla_put_failure;
+
+ err = devlink_trap_group_stats_put(msg, group_item->stats);
+ if (err)
+ goto nla_put_failure;
+
+ genlmsg_end(msg, hdr);
+
+ return 0;
+
+nla_put_failure:
+ genlmsg_cancel(msg, hdr);
+ return -EMSGSIZE;
+}
+
+static int devlink_nl_cmd_trap_group_get_doit(struct sk_buff *skb,
+ struct genl_info *info)
+{
+ struct netlink_ext_ack *extack = info->extack;
+ struct devlink *devlink = info->user_ptr[0];
+ struct devlink_trap_group_item *group_item;
+ struct sk_buff *msg;
+ int err;
+
+ if (list_empty(&devlink->trap_group_list))
+ return -EOPNOTSUPP;
+
+ group_item = devlink_trap_group_item_get_from_info(devlink, info);
+ if (!group_item) {
+ NL_SET_ERR_MSG_MOD(extack, "Device did not register this trap group");
+ return -ENOENT;
+ }
+
+ msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
+ if (!msg)
+ return -ENOMEM;
+
+ err = devlink_nl_trap_group_fill(msg, devlink, group_item,
+ DEVLINK_CMD_TRAP_GROUP_NEW,
+ info->snd_portid, info->snd_seq, 0);
+ if (err)
+ goto err_trap_group_fill;
+
+ return genlmsg_reply(msg, info);
+
+err_trap_group_fill:
+ nlmsg_free(msg);
+ return err;
+}
+
+static int devlink_nl_cmd_trap_group_get_dumpit(struct sk_buff *msg,
+ struct netlink_callback *cb)
+{
+ enum devlink_command cmd = DEVLINK_CMD_TRAP_GROUP_NEW;
+ struct devlink_trap_group_item *group_item;
+ u32 portid = NETLINK_CB(cb->skb).portid;
+ struct devlink *devlink;
+ int start = cb->args[0];
+ unsigned long index;
+ int idx = 0;
+ int err;
+
+ devlinks_xa_for_each_registered_get(sock_net(msg->sk), index, devlink) {
+ devl_lock(devlink);
+ list_for_each_entry(group_item, &devlink->trap_group_list,
+ list) {
+ if (idx < start) {
+ idx++;
+ continue;
+ }
+ err = devlink_nl_trap_group_fill(msg, devlink,
+ group_item, cmd,
+ portid,
+ cb->nlh->nlmsg_seq,
+ NLM_F_MULTI);
+ if (err) {
+ devl_unlock(devlink);
+ devlink_put(devlink);
+ goto out;
+ }
+ idx++;
+ }
+ devl_unlock(devlink);
+ devlink_put(devlink);
+ }
+out:
+ cb->args[0] = idx;
+ return msg->len;
+}
+
+static int
+__devlink_trap_group_action_set(struct devlink *devlink,
+ struct devlink_trap_group_item *group_item,
+ enum devlink_trap_action trap_action,
+ struct netlink_ext_ack *extack)
+{
+ const char *group_name = group_item->group->name;
+ struct devlink_trap_item *trap_item;
+ int err;
+
+ if (devlink->ops->trap_group_action_set) {
+ err = devlink->ops->trap_group_action_set(devlink, group_item->group,
+ trap_action, extack);
+ if (err)
+ return err;
+
+ list_for_each_entry(trap_item, &devlink->trap_list, list) {
+ if (strcmp(trap_item->group_item->group->name, group_name))
+ continue;
+ if (trap_item->action != trap_action &&
+ trap_item->trap->type != DEVLINK_TRAP_TYPE_DROP)
+ continue;
+ trap_item->action = trap_action;
+ }
+
+ return 0;
+ }
+
+ list_for_each_entry(trap_item, &devlink->trap_list, list) {
+ if (strcmp(trap_item->group_item->group->name, group_name))
+ continue;
+ err = __devlink_trap_action_set(devlink, trap_item,
+ trap_action, extack);
+ if (err)
+ return err;
+ }
+
+ return 0;
+}
+
+static int
+devlink_trap_group_action_set(struct devlink *devlink,
+ struct devlink_trap_group_item *group_item,
+ struct genl_info *info, bool *p_modified)
+{
+ enum devlink_trap_action trap_action;
+ int err;
+
+ if (!info->attrs[DEVLINK_ATTR_TRAP_ACTION])
+ return 0;
+
+ err = devlink_trap_action_get_from_info(info, &trap_action);
+ if (err) {
+ NL_SET_ERR_MSG_MOD(info->extack, "Invalid trap action");
+ return -EINVAL;
+ }
+
+ err = __devlink_trap_group_action_set(devlink, group_item, trap_action,
+ info->extack);
+ if (err)
+ return err;
+
+ *p_modified = true;
+
+ return 0;
+}
+
+static int devlink_trap_group_set(struct devlink *devlink,
+ struct devlink_trap_group_item *group_item,
+ struct genl_info *info)
+{
+ struct devlink_trap_policer_item *policer_item;
+ struct netlink_ext_ack *extack = info->extack;
+ const struct devlink_trap_policer *policer;
+ struct nlattr **attrs = info->attrs;
+ int err;
+
+ if (!attrs[DEVLINK_ATTR_TRAP_POLICER_ID])
+ return 0;
+
+ if (!devlink->ops->trap_group_set)
+ return -EOPNOTSUPP;
+
+ policer_item = group_item->policer_item;
+ if (attrs[DEVLINK_ATTR_TRAP_POLICER_ID]) {
+ u32 policer_id;
+
+ policer_id = nla_get_u32(attrs[DEVLINK_ATTR_TRAP_POLICER_ID]);
+ policer_item = devlink_trap_policer_item_lookup(devlink,
+ policer_id);
+ if (policer_id && !policer_item) {
+ NL_SET_ERR_MSG_MOD(extack, "Device did not register this trap policer");
+ return -ENOENT;
+ }
+ }
+ policer = policer_item ? policer_item->policer : NULL;
+
+ err = devlink->ops->trap_group_set(devlink, group_item->group, policer,
+ extack);
+ if (err)
+ return err;
+
+ group_item->policer_item = policer_item;
+
+ return 0;
+}
+
+static int devlink_nl_cmd_trap_group_set_doit(struct sk_buff *skb,
+ struct genl_info *info)
+{
+ struct netlink_ext_ack *extack = info->extack;
+ struct devlink *devlink = info->user_ptr[0];
+ struct devlink_trap_group_item *group_item;
+ bool modified = false;
+ int err;
+
+ if (list_empty(&devlink->trap_group_list))
+ return -EOPNOTSUPP;
+
+ group_item = devlink_trap_group_item_get_from_info(devlink, info);
+ if (!group_item) {
+ NL_SET_ERR_MSG_MOD(extack, "Device did not register this trap group");
+ return -ENOENT;
+ }
+
+ err = devlink_trap_group_action_set(devlink, group_item, info,
+ &modified);
+ if (err)
+ return err;
+
+ err = devlink_trap_group_set(devlink, group_item, info);
+ if (err)
+ goto err_trap_group_set;
+
+ return 0;
+
+err_trap_group_set:
+ if (modified)
+ NL_SET_ERR_MSG_MOD(extack, "Trap group set failed, but some changes were committed already");
+ return err;
+}
+
+static struct devlink_trap_policer_item *
+devlink_trap_policer_item_get_from_info(struct devlink *devlink,
+ struct genl_info *info)
+{
+ u32 id;
+
+ if (!info->attrs[DEVLINK_ATTR_TRAP_POLICER_ID])
+ return NULL;
+ id = nla_get_u32(info->attrs[DEVLINK_ATTR_TRAP_POLICER_ID]);
+
+ return devlink_trap_policer_item_lookup(devlink, id);
+}
+
+static int
+devlink_trap_policer_stats_put(struct sk_buff *msg, struct devlink *devlink,
+ const struct devlink_trap_policer *policer)
+{
+ struct nlattr *attr;
+ u64 drops;
+ int err;
+
+ if (!devlink->ops->trap_policer_counter_get)
+ return 0;
+
+ err = devlink->ops->trap_policer_counter_get(devlink, policer, &drops);
+ if (err)
+ return err;
+
+ attr = nla_nest_start(msg, DEVLINK_ATTR_STATS);
+ if (!attr)
+ return -EMSGSIZE;
+
+ if (nla_put_u64_64bit(msg, DEVLINK_ATTR_STATS_RX_DROPPED, drops,
+ DEVLINK_ATTR_PAD))
+ goto nla_put_failure;
+
+ nla_nest_end(msg, attr);
+
+ return 0;
+
+nla_put_failure:
+ nla_nest_cancel(msg, attr);
+ return -EMSGSIZE;
+}
+
+static int
+devlink_nl_trap_policer_fill(struct sk_buff *msg, struct devlink *devlink,
+ const struct devlink_trap_policer_item *policer_item,
+ enum devlink_command cmd, u32 portid, u32 seq,
+ int flags)
+{
+ void *hdr;
+ int err;
+
+ hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
+ if (!hdr)
+ return -EMSGSIZE;
+
+ if (devlink_nl_put_handle(msg, devlink))
+ goto nla_put_failure;
+
+ if (nla_put_u32(msg, DEVLINK_ATTR_TRAP_POLICER_ID,
+ policer_item->policer->id))
+ goto nla_put_failure;
+
+ if (nla_put_u64_64bit(msg, DEVLINK_ATTR_TRAP_POLICER_RATE,
+ policer_item->rate, DEVLINK_ATTR_PAD))
+ goto nla_put_failure;
+
+ if (nla_put_u64_64bit(msg, DEVLINK_ATTR_TRAP_POLICER_BURST,
+ policer_item->burst, DEVLINK_ATTR_PAD))
+ goto nla_put_failure;
+
+ err = devlink_trap_policer_stats_put(msg, devlink,
+ policer_item->policer);
+ if (err)
+ goto nla_put_failure;
+
+ genlmsg_end(msg, hdr);
+
+ return 0;
+
+nla_put_failure:
+ genlmsg_cancel(msg, hdr);
+ return -EMSGSIZE;
+}
+
+static int devlink_nl_cmd_trap_policer_get_doit(struct sk_buff *skb,
+ struct genl_info *info)
+{
+ struct devlink_trap_policer_item *policer_item;
+ struct netlink_ext_ack *extack = info->extack;
+ struct devlink *devlink = info->user_ptr[0];
+ struct sk_buff *msg;
+ int err;
+
+ if (list_empty(&devlink->trap_policer_list))
+ return -EOPNOTSUPP;
+
+ policer_item = devlink_trap_policer_item_get_from_info(devlink, info);
+ if (!policer_item) {
+ NL_SET_ERR_MSG_MOD(extack, "Device did not register this trap policer");
+ return -ENOENT;
+ }
+
+ msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
+ if (!msg)
+ return -ENOMEM;
+
+ err = devlink_nl_trap_policer_fill(msg, devlink, policer_item,
+ DEVLINK_CMD_TRAP_POLICER_NEW,
+ info->snd_portid, info->snd_seq, 0);
+ if (err)
+ goto err_trap_policer_fill;
+
+ return genlmsg_reply(msg, info);
+
+err_trap_policer_fill:
+ nlmsg_free(msg);
+ return err;
+}
+
+static int devlink_nl_cmd_trap_policer_get_dumpit(struct sk_buff *msg,
+ struct netlink_callback *cb)
+{
+ enum devlink_command cmd = DEVLINK_CMD_TRAP_POLICER_NEW;
+ struct devlink_trap_policer_item *policer_item;
+ u32 portid = NETLINK_CB(cb->skb).portid;
+ struct devlink *devlink;
+ int start = cb->args[0];
+ unsigned long index;
+ int idx = 0;
+ int err;
+
+ devlinks_xa_for_each_registered_get(sock_net(msg->sk), index, devlink) {
+ devl_lock(devlink);
+ list_for_each_entry(policer_item, &devlink->trap_policer_list,
+ list) {
+ if (idx < start) {
+ idx++;
+ continue;
+ }
+ err = devlink_nl_trap_policer_fill(msg, devlink,
+ policer_item, cmd,
+ portid,
+ cb->nlh->nlmsg_seq,
+ NLM_F_MULTI);
+ if (err) {
+ devl_unlock(devlink);
+ devlink_put(devlink);
+ goto out;
+ }
+ idx++;
+ }
+ devl_unlock(devlink);
+ devlink_put(devlink);
+ }
+out:
+ cb->args[0] = idx;
+ return msg->len;
+}
+
+static int
+devlink_trap_policer_set(struct devlink *devlink,
+ struct devlink_trap_policer_item *policer_item,
+ struct genl_info *info)
+{
+ struct netlink_ext_ack *extack = info->extack;
+ struct nlattr **attrs = info->attrs;
+ u64 rate, burst;
+ int err;
+
+ rate = policer_item->rate;
+ burst = policer_item->burst;
+
+ if (attrs[DEVLINK_ATTR_TRAP_POLICER_RATE])
+ rate = nla_get_u64(attrs[DEVLINK_ATTR_TRAP_POLICER_RATE]);
+
+ if (attrs[DEVLINK_ATTR_TRAP_POLICER_BURST])
+ burst = nla_get_u64(attrs[DEVLINK_ATTR_TRAP_POLICER_BURST]);
+
+ if (rate < policer_item->policer->min_rate) {
+ NL_SET_ERR_MSG_MOD(extack, "Policer rate lower than limit");
+ return -EINVAL;
+ }
+
+ if (rate > policer_item->policer->max_rate) {
+ NL_SET_ERR_MSG_MOD(extack, "Policer rate higher than limit");
+ return -EINVAL;
+ }
+
+ if (burst < policer_item->policer->min_burst) {
+ NL_SET_ERR_MSG_MOD(extack, "Policer burst size lower than limit");
+ return -EINVAL;
+ }
+
+ if (burst > policer_item->policer->max_burst) {
+ NL_SET_ERR_MSG_MOD(extack, "Policer burst size higher than limit");
+ return -EINVAL;
+ }
+
+ err = devlink->ops->trap_policer_set(devlink, policer_item->policer,
+ rate, burst, info->extack);
+ if (err)
+ return err;
+
+ policer_item->rate = rate;
+ policer_item->burst = burst;
+
+ return 0;
+}
+
+static int devlink_nl_cmd_trap_policer_set_doit(struct sk_buff *skb,
+ struct genl_info *info)
+{
+ struct devlink_trap_policer_item *policer_item;
+ struct netlink_ext_ack *extack = info->extack;
+ struct devlink *devlink = info->user_ptr[0];
+
+ if (list_empty(&devlink->trap_policer_list))
+ return -EOPNOTSUPP;
+
+ if (!devlink->ops->trap_policer_set)
+ return -EOPNOTSUPP;
+
+ policer_item = devlink_trap_policer_item_get_from_info(devlink, info);
+ if (!policer_item) {
+ NL_SET_ERR_MSG_MOD(extack, "Device did not register this trap policer");
+ return -ENOENT;
+ }
+
+ return devlink_trap_policer_set(devlink, policer_item, info);
+}
+
+static const struct nla_policy devlink_nl_policy[DEVLINK_ATTR_MAX + 1] = {
+ [DEVLINK_ATTR_UNSPEC] = { .strict_start_type =
+ DEVLINK_ATTR_TRAP_POLICER_ID },
+ [DEVLINK_ATTR_BUS_NAME] = { .type = NLA_NUL_STRING },
+ [DEVLINK_ATTR_DEV_NAME] = { .type = NLA_NUL_STRING },
+ [DEVLINK_ATTR_PORT_INDEX] = { .type = NLA_U32 },
+ [DEVLINK_ATTR_PORT_TYPE] = NLA_POLICY_RANGE(NLA_U16, DEVLINK_PORT_TYPE_AUTO,
+ DEVLINK_PORT_TYPE_IB),
+ [DEVLINK_ATTR_PORT_SPLIT_COUNT] = { .type = NLA_U32 },
+ [DEVLINK_ATTR_SB_INDEX] = { .type = NLA_U32 },
+ [DEVLINK_ATTR_SB_POOL_INDEX] = { .type = NLA_U16 },
+ [DEVLINK_ATTR_SB_POOL_TYPE] = { .type = NLA_U8 },
+ [DEVLINK_ATTR_SB_POOL_SIZE] = { .type = NLA_U32 },
+ [DEVLINK_ATTR_SB_POOL_THRESHOLD_TYPE] = { .type = NLA_U8 },
+ [DEVLINK_ATTR_SB_THRESHOLD] = { .type = NLA_U32 },
+ [DEVLINK_ATTR_SB_TC_INDEX] = { .type = NLA_U16 },
+ [DEVLINK_ATTR_ESWITCH_MODE] = NLA_POLICY_RANGE(NLA_U16, DEVLINK_ESWITCH_MODE_LEGACY,
+ DEVLINK_ESWITCH_MODE_SWITCHDEV),
+ [DEVLINK_ATTR_ESWITCH_INLINE_MODE] = { .type = NLA_U8 },
+ [DEVLINK_ATTR_ESWITCH_ENCAP_MODE] = { .type = NLA_U8 },
+ [DEVLINK_ATTR_DPIPE_TABLE_NAME] = { .type = NLA_NUL_STRING },
+ [DEVLINK_ATTR_DPIPE_TABLE_COUNTERS_ENABLED] = { .type = NLA_U8 },
+ [DEVLINK_ATTR_RESOURCE_ID] = { .type = NLA_U64},
+ [DEVLINK_ATTR_RESOURCE_SIZE] = { .type = NLA_U64},
+ [DEVLINK_ATTR_PARAM_NAME] = { .type = NLA_NUL_STRING },
+ [DEVLINK_ATTR_PARAM_TYPE] = { .type = NLA_U8 },
+ [DEVLINK_ATTR_PARAM_VALUE_CMODE] = { .type = NLA_U8 },
+ [DEVLINK_ATTR_REGION_NAME] = { .type = NLA_NUL_STRING },
+ [DEVLINK_ATTR_REGION_SNAPSHOT_ID] = { .type = NLA_U32 },
+ [DEVLINK_ATTR_REGION_CHUNK_ADDR] = { .type = NLA_U64 },
+ [DEVLINK_ATTR_REGION_CHUNK_LEN] = { .type = NLA_U64 },
+ [DEVLINK_ATTR_HEALTH_REPORTER_NAME] = { .type = NLA_NUL_STRING },
+ [DEVLINK_ATTR_HEALTH_REPORTER_GRACEFUL_PERIOD] = { .type = NLA_U64 },
+ [DEVLINK_ATTR_HEALTH_REPORTER_AUTO_RECOVER] = { .type = NLA_U8 },
+ [DEVLINK_ATTR_FLASH_UPDATE_FILE_NAME] = { .type = NLA_NUL_STRING },
+ [DEVLINK_ATTR_FLASH_UPDATE_COMPONENT] = { .type = NLA_NUL_STRING },
+ [DEVLINK_ATTR_FLASH_UPDATE_OVERWRITE_MASK] =
+ NLA_POLICY_BITFIELD32(DEVLINK_SUPPORTED_FLASH_OVERWRITE_SECTIONS),
+ [DEVLINK_ATTR_TRAP_NAME] = { .type = NLA_NUL_STRING },
+ [DEVLINK_ATTR_TRAP_ACTION] = { .type = NLA_U8 },
+ [DEVLINK_ATTR_TRAP_GROUP_NAME] = { .type = NLA_NUL_STRING },
+ [DEVLINK_ATTR_NETNS_PID] = { .type = NLA_U32 },
+ [DEVLINK_ATTR_NETNS_FD] = { .type = NLA_U32 },
+ [DEVLINK_ATTR_NETNS_ID] = { .type = NLA_U32 },
+ [DEVLINK_ATTR_HEALTH_REPORTER_AUTO_DUMP] = { .type = NLA_U8 },
+ [DEVLINK_ATTR_TRAP_POLICER_ID] = { .type = NLA_U32 },
+ [DEVLINK_ATTR_TRAP_POLICER_RATE] = { .type = NLA_U64 },
+ [DEVLINK_ATTR_TRAP_POLICER_BURST] = { .type = NLA_U64 },
+ [DEVLINK_ATTR_PORT_FUNCTION] = { .type = NLA_NESTED },
+ [DEVLINK_ATTR_RELOAD_ACTION] = NLA_POLICY_RANGE(NLA_U8, DEVLINK_RELOAD_ACTION_DRIVER_REINIT,
+ DEVLINK_RELOAD_ACTION_MAX),
+ [DEVLINK_ATTR_RELOAD_LIMITS] = NLA_POLICY_BITFIELD32(DEVLINK_RELOAD_LIMITS_VALID_MASK),
+ [DEVLINK_ATTR_PORT_FLAVOUR] = { .type = NLA_U16 },
+ [DEVLINK_ATTR_PORT_PCI_PF_NUMBER] = { .type = NLA_U16 },
+ [DEVLINK_ATTR_PORT_PCI_SF_NUMBER] = { .type = NLA_U32 },
+ [DEVLINK_ATTR_PORT_CONTROLLER_NUMBER] = { .type = NLA_U32 },
+ [DEVLINK_ATTR_RATE_TYPE] = { .type = NLA_U16 },
+ [DEVLINK_ATTR_RATE_TX_SHARE] = { .type = NLA_U64 },
+ [DEVLINK_ATTR_RATE_TX_MAX] = { .type = NLA_U64 },
+ [DEVLINK_ATTR_RATE_NODE_NAME] = { .type = NLA_NUL_STRING },
+ [DEVLINK_ATTR_RATE_PARENT_NODE_NAME] = { .type = NLA_NUL_STRING },
+ [DEVLINK_ATTR_LINECARD_INDEX] = { .type = NLA_U32 },
+ [DEVLINK_ATTR_LINECARD_TYPE] = { .type = NLA_NUL_STRING },
+ [DEVLINK_ATTR_SELFTESTS] = { .type = NLA_NESTED },
+};
+
+static const struct genl_small_ops devlink_nl_ops[] = {
+ {
+ .cmd = DEVLINK_CMD_GET,
+ .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
+ .doit = devlink_nl_cmd_get_doit,
+ .dumpit = devlink_nl_cmd_get_dumpit,
+ /* can be retrieved by unprivileged users */
+ },
+ {
+ .cmd = DEVLINK_CMD_PORT_GET,
+ .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
+ .doit = devlink_nl_cmd_port_get_doit,
+ .dumpit = devlink_nl_cmd_port_get_dumpit,
+ .internal_flags = DEVLINK_NL_FLAG_NEED_PORT,
+ /* can be retrieved by unprivileged users */
+ },
+ {
+ .cmd = DEVLINK_CMD_PORT_SET,
+ .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
+ .doit = devlink_nl_cmd_port_set_doit,
+ .flags = GENL_ADMIN_PERM,
+ .internal_flags = DEVLINK_NL_FLAG_NEED_PORT,
+ },
+ {
+ .cmd = DEVLINK_CMD_RATE_GET,
+ .doit = devlink_nl_cmd_rate_get_doit,
+ .dumpit = devlink_nl_cmd_rate_get_dumpit,
+ .internal_flags = DEVLINK_NL_FLAG_NEED_RATE,
+ /* can be retrieved by unprivileged users */
+ },
+ {
+ .cmd = DEVLINK_CMD_RATE_SET,
+ .doit = devlink_nl_cmd_rate_set_doit,
+ .flags = GENL_ADMIN_PERM,
+ .internal_flags = DEVLINK_NL_FLAG_NEED_RATE,
+ },
+ {
+ .cmd = DEVLINK_CMD_RATE_NEW,
+ .doit = devlink_nl_cmd_rate_new_doit,
+ .flags = GENL_ADMIN_PERM,
+ },
+ {
+ .cmd = DEVLINK_CMD_RATE_DEL,
+ .doit = devlink_nl_cmd_rate_del_doit,
+ .flags = GENL_ADMIN_PERM,
+ .internal_flags = DEVLINK_NL_FLAG_NEED_RATE_NODE,
+ },
+ {
+ .cmd = DEVLINK_CMD_PORT_SPLIT,
+ .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
+ .doit = devlink_nl_cmd_port_split_doit,
+ .flags = GENL_ADMIN_PERM,
+ .internal_flags = DEVLINK_NL_FLAG_NEED_PORT,
+ },
+ {
+ .cmd = DEVLINK_CMD_PORT_UNSPLIT,
+ .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
+ .doit = devlink_nl_cmd_port_unsplit_doit,
+ .flags = GENL_ADMIN_PERM,
+ .internal_flags = DEVLINK_NL_FLAG_NEED_PORT,
+ },
+ {
+ .cmd = DEVLINK_CMD_PORT_NEW,
+ .doit = devlink_nl_cmd_port_new_doit,
+ .flags = GENL_ADMIN_PERM,
+ },
+ {
+ .cmd = DEVLINK_CMD_PORT_DEL,
+ .doit = devlink_nl_cmd_port_del_doit,
+ .flags = GENL_ADMIN_PERM,
+ },
+ {
+ .cmd = DEVLINK_CMD_LINECARD_GET,
+ .doit = devlink_nl_cmd_linecard_get_doit,
+ .dumpit = devlink_nl_cmd_linecard_get_dumpit,
+ .internal_flags = DEVLINK_NL_FLAG_NEED_LINECARD,
+ /* can be retrieved by unprivileged users */
+ },
+ {
+ .cmd = DEVLINK_CMD_LINECARD_SET,
+ .doit = devlink_nl_cmd_linecard_set_doit,
+ .flags = GENL_ADMIN_PERM,
+ .internal_flags = DEVLINK_NL_FLAG_NEED_LINECARD,
+ },
+ {
+ .cmd = DEVLINK_CMD_SB_GET,
+ .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
+ .doit = devlink_nl_cmd_sb_get_doit,
+ .dumpit = devlink_nl_cmd_sb_get_dumpit,
+ /* can be retrieved by unprivileged users */
+ },
+ {
+ .cmd = DEVLINK_CMD_SB_POOL_GET,
+ .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
+ .doit = devlink_nl_cmd_sb_pool_get_doit,
+ .dumpit = devlink_nl_cmd_sb_pool_get_dumpit,
+ /* can be retrieved by unprivileged users */
+ },
+ {
+ .cmd = DEVLINK_CMD_SB_POOL_SET,
+ .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
+ .doit = devlink_nl_cmd_sb_pool_set_doit,
+ .flags = GENL_ADMIN_PERM,
+ },
+ {
+ .cmd = DEVLINK_CMD_SB_PORT_POOL_GET,
+ .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
+ .doit = devlink_nl_cmd_sb_port_pool_get_doit,
+ .dumpit = devlink_nl_cmd_sb_port_pool_get_dumpit,
+ .internal_flags = DEVLINK_NL_FLAG_NEED_PORT,
+ /* can be retrieved by unprivileged users */
+ },
+ {
+ .cmd = DEVLINK_CMD_SB_PORT_POOL_SET,
+ .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
+ .doit = devlink_nl_cmd_sb_port_pool_set_doit,
+ .flags = GENL_ADMIN_PERM,
+ .internal_flags = DEVLINK_NL_FLAG_NEED_PORT,
+ },
+ {
+ .cmd = DEVLINK_CMD_SB_TC_POOL_BIND_GET,
+ .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
+ .doit = devlink_nl_cmd_sb_tc_pool_bind_get_doit,
+ .dumpit = devlink_nl_cmd_sb_tc_pool_bind_get_dumpit,
+ .internal_flags = DEVLINK_NL_FLAG_NEED_PORT,
+ /* can be retrieved by unprivileged users */
+ },
+ {
+ .cmd = DEVLINK_CMD_SB_TC_POOL_BIND_SET,
+ .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
+ .doit = devlink_nl_cmd_sb_tc_pool_bind_set_doit,
+ .flags = GENL_ADMIN_PERM,
+ .internal_flags = DEVLINK_NL_FLAG_NEED_PORT,
+ },
+ {
+ .cmd = DEVLINK_CMD_SB_OCC_SNAPSHOT,
+ .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
+ .doit = devlink_nl_cmd_sb_occ_snapshot_doit,
+ .flags = GENL_ADMIN_PERM,
+ },
+ {
+ .cmd = DEVLINK_CMD_SB_OCC_MAX_CLEAR,
+ .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
+ .doit = devlink_nl_cmd_sb_occ_max_clear_doit,
+ .flags = GENL_ADMIN_PERM,
+ },
+ {
+ .cmd = DEVLINK_CMD_ESWITCH_GET,
+ .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
+ .doit = devlink_nl_cmd_eswitch_get_doit,
+ .flags = GENL_ADMIN_PERM,
+ },
+ {
+ .cmd = DEVLINK_CMD_ESWITCH_SET,
+ .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
+ .doit = devlink_nl_cmd_eswitch_set_doit,
+ .flags = GENL_ADMIN_PERM,
+ },
+ {
+ .cmd = DEVLINK_CMD_DPIPE_TABLE_GET,
+ .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
+ .doit = devlink_nl_cmd_dpipe_table_get,
+ /* can be retrieved by unprivileged users */
+ },
+ {
+ .cmd = DEVLINK_CMD_DPIPE_ENTRIES_GET,
+ .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
+ .doit = devlink_nl_cmd_dpipe_entries_get,
+ /* can be retrieved by unprivileged users */
+ },
+ {
+ .cmd = DEVLINK_CMD_DPIPE_HEADERS_GET,
+ .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
+ .doit = devlink_nl_cmd_dpipe_headers_get,
+ /* can be retrieved by unprivileged users */
+ },
+ {
+ .cmd = DEVLINK_CMD_DPIPE_TABLE_COUNTERS_SET,
+ .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
+ .doit = devlink_nl_cmd_dpipe_table_counters_set,
+ .flags = GENL_ADMIN_PERM,
+ },
+ {
+ .cmd = DEVLINK_CMD_RESOURCE_SET,
+ .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
+ .doit = devlink_nl_cmd_resource_set,
+ .flags = GENL_ADMIN_PERM,
+ },
+ {
+ .cmd = DEVLINK_CMD_RESOURCE_DUMP,
+ .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
+ .doit = devlink_nl_cmd_resource_dump,
+ /* can be retrieved by unprivileged users */
+ },
+ {
+ .cmd = DEVLINK_CMD_RELOAD,
+ .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
+ .doit = devlink_nl_cmd_reload,
+ .flags = GENL_ADMIN_PERM,
+ },
+ {
+ .cmd = DEVLINK_CMD_PARAM_GET,
+ .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
+ .doit = devlink_nl_cmd_param_get_doit,
+ .dumpit = devlink_nl_cmd_param_get_dumpit,
+ /* can be retrieved by unprivileged users */
+ },
+ {
+ .cmd = DEVLINK_CMD_PARAM_SET,
+ .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
+ .doit = devlink_nl_cmd_param_set_doit,
+ .flags = GENL_ADMIN_PERM,
+ },
+ {
+ .cmd = DEVLINK_CMD_PORT_PARAM_GET,
+ .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
+ .doit = devlink_nl_cmd_port_param_get_doit,
+ .dumpit = devlink_nl_cmd_port_param_get_dumpit,
+ .internal_flags = DEVLINK_NL_FLAG_NEED_PORT,
+ /* can be retrieved by unprivileged users */
+ },
+ {
+ .cmd = DEVLINK_CMD_PORT_PARAM_SET,
+ .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
+ .doit = devlink_nl_cmd_port_param_set_doit,
+ .flags = GENL_ADMIN_PERM,
+ .internal_flags = DEVLINK_NL_FLAG_NEED_PORT,
+ },
+ {
+ .cmd = DEVLINK_CMD_REGION_GET,
+ .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
+ .doit = devlink_nl_cmd_region_get_doit,
+ .dumpit = devlink_nl_cmd_region_get_dumpit,
+ .flags = GENL_ADMIN_PERM,
+ },
+ {
+ .cmd = DEVLINK_CMD_REGION_NEW,
+ .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
+ .doit = devlink_nl_cmd_region_new,
+ .flags = GENL_ADMIN_PERM,
+ },
+ {
+ .cmd = DEVLINK_CMD_REGION_DEL,
+ .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
+ .doit = devlink_nl_cmd_region_del,
+ .flags = GENL_ADMIN_PERM,
+ },
+ {
+ .cmd = DEVLINK_CMD_REGION_READ,
+ .validate = GENL_DONT_VALIDATE_STRICT |
+ GENL_DONT_VALIDATE_DUMP_STRICT,
+ .dumpit = devlink_nl_cmd_region_read_dumpit,
+ .flags = GENL_ADMIN_PERM,
+ },
+ {
+ .cmd = DEVLINK_CMD_INFO_GET,
+ .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
+ .doit = devlink_nl_cmd_info_get_doit,
+ .dumpit = devlink_nl_cmd_info_get_dumpit,
+ /* can be retrieved by unprivileged users */
+ },
+ {
+ .cmd = DEVLINK_CMD_HEALTH_REPORTER_GET,
+ .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
+ .doit = devlink_nl_cmd_health_reporter_get_doit,
+ .dumpit = devlink_nl_cmd_health_reporter_get_dumpit,
+ .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK_OR_PORT,
+ /* can be retrieved by unprivileged users */
+ },
+ {
+ .cmd = DEVLINK_CMD_HEALTH_REPORTER_SET,
+ .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
+ .doit = devlink_nl_cmd_health_reporter_set_doit,
+ .flags = GENL_ADMIN_PERM,
+ .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK_OR_PORT,
+ },
+ {
+ .cmd = DEVLINK_CMD_HEALTH_REPORTER_RECOVER,
+ .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
+ .doit = devlink_nl_cmd_health_reporter_recover_doit,
+ .flags = GENL_ADMIN_PERM,
+ .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK_OR_PORT,
+ },
+ {
+ .cmd = DEVLINK_CMD_HEALTH_REPORTER_DIAGNOSE,
+ .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
+ .doit = devlink_nl_cmd_health_reporter_diagnose_doit,
+ .flags = GENL_ADMIN_PERM,
+ .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK_OR_PORT,
+ },
+ {
+ .cmd = DEVLINK_CMD_HEALTH_REPORTER_DUMP_GET,
+ .validate = GENL_DONT_VALIDATE_STRICT |
+ GENL_DONT_VALIDATE_DUMP_STRICT,
+ .dumpit = devlink_nl_cmd_health_reporter_dump_get_dumpit,
+ .flags = GENL_ADMIN_PERM,
+ },
+ {
+ .cmd = DEVLINK_CMD_HEALTH_REPORTER_DUMP_CLEAR,
+ .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
+ .doit = devlink_nl_cmd_health_reporter_dump_clear_doit,
+ .flags = GENL_ADMIN_PERM,
+ .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK_OR_PORT,
+ },
+ {
+ .cmd = DEVLINK_CMD_HEALTH_REPORTER_TEST,
+ .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
+ .doit = devlink_nl_cmd_health_reporter_test_doit,
+ .flags = GENL_ADMIN_PERM,
+ .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK_OR_PORT,
+ },
+ {
+ .cmd = DEVLINK_CMD_FLASH_UPDATE,
+ .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
+ .doit = devlink_nl_cmd_flash_update,
+ .flags = GENL_ADMIN_PERM,
+ },
+ {
+ .cmd = DEVLINK_CMD_TRAP_GET,
+ .doit = devlink_nl_cmd_trap_get_doit,
+ .dumpit = devlink_nl_cmd_trap_get_dumpit,
+ /* can be retrieved by unprivileged users */
+ },
+ {
+ .cmd = DEVLINK_CMD_TRAP_SET,
+ .doit = devlink_nl_cmd_trap_set_doit,
+ .flags = GENL_ADMIN_PERM,
+ },
+ {
+ .cmd = DEVLINK_CMD_TRAP_GROUP_GET,
+ .doit = devlink_nl_cmd_trap_group_get_doit,
+ .dumpit = devlink_nl_cmd_trap_group_get_dumpit,
+ /* can be retrieved by unprivileged users */
+ },
+ {
+ .cmd = DEVLINK_CMD_TRAP_GROUP_SET,
+ .doit = devlink_nl_cmd_trap_group_set_doit,
+ .flags = GENL_ADMIN_PERM,
+ },
+ {
+ .cmd = DEVLINK_CMD_TRAP_POLICER_GET,
+ .doit = devlink_nl_cmd_trap_policer_get_doit,
+ .dumpit = devlink_nl_cmd_trap_policer_get_dumpit,
+ /* can be retrieved by unprivileged users */
+ },
+ {
+ .cmd = DEVLINK_CMD_TRAP_POLICER_SET,
+ .doit = devlink_nl_cmd_trap_policer_set_doit,
+ .flags = GENL_ADMIN_PERM,
+ },
+ {
+ .cmd = DEVLINK_CMD_SELFTESTS_GET,
+ .doit = devlink_nl_cmd_selftests_get_doit,
+ .dumpit = devlink_nl_cmd_selftests_get_dumpit
+ /* can be retrieved by unprivileged users */
+ },
+ {
+ .cmd = DEVLINK_CMD_SELFTESTS_RUN,
+ .doit = devlink_nl_cmd_selftests_run,
+ .flags = GENL_ADMIN_PERM,
+ },
+};
+
+static struct genl_family devlink_nl_family __ro_after_init = {
+ .name = DEVLINK_GENL_NAME,
+ .version = DEVLINK_GENL_VERSION,
+ .maxattr = DEVLINK_ATTR_MAX,
+ .policy = devlink_nl_policy,
+ .netnsok = true,
+ .parallel_ops = true,
+ .pre_doit = devlink_nl_pre_doit,
+ .post_doit = devlink_nl_post_doit,
+ .module = THIS_MODULE,
+ .small_ops = devlink_nl_ops,
+ .n_small_ops = ARRAY_SIZE(devlink_nl_ops),
+ .resv_start_op = DEVLINK_CMD_SELFTESTS_RUN + 1,
+ .mcgrps = devlink_nl_mcgrps,
+ .n_mcgrps = ARRAY_SIZE(devlink_nl_mcgrps),
+};
+
+static bool devlink_reload_actions_valid(const struct devlink_ops *ops)
+{
+ const struct devlink_reload_combination *comb;
+ int i;
+
+ if (!devlink_reload_supported(ops)) {
+ if (WARN_ON(ops->reload_actions))
+ return false;
+ return true;
+ }
+
+ if (WARN_ON(!ops->reload_actions ||
+ ops->reload_actions & BIT(DEVLINK_RELOAD_ACTION_UNSPEC) ||
+ ops->reload_actions >= BIT(__DEVLINK_RELOAD_ACTION_MAX)))
+ return false;
+
+ if (WARN_ON(ops->reload_limits & BIT(DEVLINK_RELOAD_LIMIT_UNSPEC) ||
+ ops->reload_limits >= BIT(__DEVLINK_RELOAD_LIMIT_MAX)))
+ return false;
+
+ for (i = 0; i < ARRAY_SIZE(devlink_reload_invalid_combinations); i++) {
+ comb = &devlink_reload_invalid_combinations[i];
+ if (ops->reload_actions == BIT(comb->action) &&
+ ops->reload_limits == BIT(comb->limit))
+ return false;
+ }
+ return true;
+}
+
+/**
+ * devlink_set_features - Set devlink supported features
+ *
+ * @devlink: devlink
+ * @features: devlink support features
+ *
+ * This interface allows us to set reload ops separatelly from
+ * the devlink_alloc.
+ */
+void devlink_set_features(struct devlink *devlink, u64 features)
+{
+ ASSERT_DEVLINK_NOT_REGISTERED(devlink);
+
+ WARN_ON(features & DEVLINK_F_RELOAD &&
+ !devlink_reload_supported(devlink->ops));
+ devlink->features = features;
+}
+EXPORT_SYMBOL_GPL(devlink_set_features);
+
+/**
+ * devlink_alloc_ns - Allocate new devlink instance resources
+ * in specific namespace
+ *
+ * @ops: ops
+ * @priv_size: size of user private data
+ * @net: net namespace
+ * @dev: parent device
+ *
+ * Allocate new devlink instance resources, including devlink index
+ * and name.
+ */
+struct devlink *devlink_alloc_ns(const struct devlink_ops *ops,
+ size_t priv_size, struct net *net,
+ struct device *dev)
+{
+ struct devlink *devlink;
+ static u32 last_id;
+ int ret;
+
+ WARN_ON(!ops || !dev);
+ if (!devlink_reload_actions_valid(ops))
+ return NULL;
+
+ devlink = kzalloc(sizeof(*devlink) + priv_size, GFP_KERNEL);
+ if (!devlink)
+ return NULL;
+
+ ret = xa_alloc_cyclic(&devlinks, &devlink->index, devlink, xa_limit_31b,
+ &last_id, GFP_KERNEL);
+ if (ret < 0) {
+ kfree(devlink);
+ return NULL;
+ }
+
+ devlink->dev = dev;
+ devlink->ops = ops;
+ xa_init_flags(&devlink->snapshot_ids, XA_FLAGS_ALLOC);
+ write_pnet(&devlink->_net, net);
+ INIT_LIST_HEAD(&devlink->port_list);
+ INIT_LIST_HEAD(&devlink->rate_list);
+ INIT_LIST_HEAD(&devlink->linecard_list);
+ INIT_LIST_HEAD(&devlink->sb_list);
+ INIT_LIST_HEAD_RCU(&devlink->dpipe_table_list);
+ INIT_LIST_HEAD(&devlink->resource_list);
+ INIT_LIST_HEAD(&devlink->param_list);
+ INIT_LIST_HEAD(&devlink->region_list);
+ INIT_LIST_HEAD(&devlink->reporter_list);
+ INIT_LIST_HEAD(&devlink->trap_list);
+ INIT_LIST_HEAD(&devlink->trap_group_list);
+ INIT_LIST_HEAD(&devlink->trap_policer_list);
+ lockdep_register_key(&devlink->lock_key);
+ mutex_init(&devlink->lock);
+ lockdep_set_class(&devlink->lock, &devlink->lock_key);
+ mutex_init(&devlink->reporters_lock);
+ mutex_init(&devlink->linecards_lock);
+ refcount_set(&devlink->refcount, 1);
+ init_completion(&devlink->comp);
+
+ return devlink;
+}
+EXPORT_SYMBOL_GPL(devlink_alloc_ns);
+
+static void
+devlink_trap_policer_notify(struct devlink *devlink,
+ const struct devlink_trap_policer_item *policer_item,
+ enum devlink_command cmd);
+static void
+devlink_trap_group_notify(struct devlink *devlink,
+ const struct devlink_trap_group_item *group_item,
+ enum devlink_command cmd);
+static void devlink_trap_notify(struct devlink *devlink,
+ const struct devlink_trap_item *trap_item,
+ enum devlink_command cmd);
+
+static void devlink_notify_register(struct devlink *devlink)
+{
+ struct devlink_trap_policer_item *policer_item;
+ struct devlink_trap_group_item *group_item;
+ struct devlink_param_item *param_item;
+ struct devlink_trap_item *trap_item;
+ struct devlink_port *devlink_port;
+ struct devlink_linecard *linecard;
+ struct devlink_rate *rate_node;
+ struct devlink_region *region;
+
+ devlink_notify(devlink, DEVLINK_CMD_NEW);
+ list_for_each_entry(linecard, &devlink->linecard_list, list)
+ devlink_linecard_notify(linecard, DEVLINK_CMD_LINECARD_NEW);
+
+ list_for_each_entry(devlink_port, &devlink->port_list, list)
+ devlink_port_notify(devlink_port, DEVLINK_CMD_PORT_NEW);
+
+ list_for_each_entry(policer_item, &devlink->trap_policer_list, list)
+ devlink_trap_policer_notify(devlink, policer_item,
+ DEVLINK_CMD_TRAP_POLICER_NEW);
+
+ list_for_each_entry(group_item, &devlink->trap_group_list, list)
+ devlink_trap_group_notify(devlink, group_item,
+ DEVLINK_CMD_TRAP_GROUP_NEW);
+
+ list_for_each_entry(trap_item, &devlink->trap_list, list)
+ devlink_trap_notify(devlink, trap_item, DEVLINK_CMD_TRAP_NEW);
+
+ list_for_each_entry(rate_node, &devlink->rate_list, list)
+ devlink_rate_notify(rate_node, DEVLINK_CMD_RATE_NEW);
+
+ list_for_each_entry(region, &devlink->region_list, list)
+ devlink_nl_region_notify(region, NULL, DEVLINK_CMD_REGION_NEW);
+
+ list_for_each_entry(param_item, &devlink->param_list, list)
+ devlink_param_notify(devlink, 0, param_item,
+ DEVLINK_CMD_PARAM_NEW);
+}
+
+static void devlink_notify_unregister(struct devlink *devlink)
+{
+ struct devlink_trap_policer_item *policer_item;
+ struct devlink_trap_group_item *group_item;
+ struct devlink_param_item *param_item;
+ struct devlink_trap_item *trap_item;
+ struct devlink_port *devlink_port;
+ struct devlink_linecard *linecard;
+ struct devlink_rate *rate_node;
+ struct devlink_region *region;
+
+ list_for_each_entry_reverse(param_item, &devlink->param_list, list)
+ devlink_param_notify(devlink, 0, param_item,
+ DEVLINK_CMD_PARAM_DEL);
+
+ list_for_each_entry_reverse(region, &devlink->region_list, list)
+ devlink_nl_region_notify(region, NULL, DEVLINK_CMD_REGION_DEL);
+
+ list_for_each_entry_reverse(rate_node, &devlink->rate_list, list)
+ devlink_rate_notify(rate_node, DEVLINK_CMD_RATE_DEL);
+
+ list_for_each_entry_reverse(trap_item, &devlink->trap_list, list)
+ devlink_trap_notify(devlink, trap_item, DEVLINK_CMD_TRAP_DEL);
+
+ list_for_each_entry_reverse(group_item, &devlink->trap_group_list, list)
+ devlink_trap_group_notify(devlink, group_item,
+ DEVLINK_CMD_TRAP_GROUP_DEL);
+ list_for_each_entry_reverse(policer_item, &devlink->trap_policer_list,
+ list)
+ devlink_trap_policer_notify(devlink, policer_item,
+ DEVLINK_CMD_TRAP_POLICER_DEL);
+
+ list_for_each_entry_reverse(devlink_port, &devlink->port_list, list)
+ devlink_port_notify(devlink_port, DEVLINK_CMD_PORT_DEL);
+ list_for_each_entry_reverse(linecard, &devlink->linecard_list, list)
+ devlink_linecard_notify(linecard, DEVLINK_CMD_LINECARD_DEL);
+ devlink_notify(devlink, DEVLINK_CMD_DEL);
+}
+
+/**
+ * devlink_register - Register devlink instance
+ *
+ * @devlink: devlink
+ */
+void devlink_register(struct devlink *devlink)
+{
+ ASSERT_DEVLINK_NOT_REGISTERED(devlink);
+ /* Make sure that we are in .probe() routine */
+
+ xa_set_mark(&devlinks, devlink->index, DEVLINK_REGISTERED);
+ devlink_notify_register(devlink);
+}
+EXPORT_SYMBOL_GPL(devlink_register);
+
+/**
+ * devlink_unregister - Unregister devlink instance
+ *
+ * @devlink: devlink
+ */
+void devlink_unregister(struct devlink *devlink)
+{
+ ASSERT_DEVLINK_REGISTERED(devlink);
+ /* Make sure that we are in .remove() routine */
+
+ xa_set_mark(&devlinks, devlink->index, DEVLINK_UNREGISTERING);
+ devlink_put(devlink);
+ wait_for_completion(&devlink->comp);
+
+ devlink_notify_unregister(devlink);
+ xa_clear_mark(&devlinks, devlink->index, DEVLINK_REGISTERED);
+ xa_clear_mark(&devlinks, devlink->index, DEVLINK_UNREGISTERING);
+}
+EXPORT_SYMBOL_GPL(devlink_unregister);
+
+/**
+ * devlink_free - Free devlink instance resources
+ *
+ * @devlink: devlink
+ */
+void devlink_free(struct devlink *devlink)
+{
+ ASSERT_DEVLINK_NOT_REGISTERED(devlink);
+
+ mutex_destroy(&devlink->linecards_lock);
+ mutex_destroy(&devlink->reporters_lock);
+ mutex_destroy(&devlink->lock);
+ lockdep_unregister_key(&devlink->lock_key);
+ WARN_ON(!list_empty(&devlink->trap_policer_list));
+ WARN_ON(!list_empty(&devlink->trap_group_list));
+ WARN_ON(!list_empty(&devlink->trap_list));
+ WARN_ON(!list_empty(&devlink->reporter_list));
+ WARN_ON(!list_empty(&devlink->region_list));
+ WARN_ON(!list_empty(&devlink->param_list));
+ WARN_ON(!list_empty(&devlink->resource_list));
+ WARN_ON(!list_empty(&devlink->dpipe_table_list));
+ WARN_ON(!list_empty(&devlink->sb_list));
+ WARN_ON(!list_empty(&devlink->rate_list));
+ WARN_ON(!list_empty(&devlink->linecard_list));
+ WARN_ON(!list_empty(&devlink->port_list));
+
+ xa_destroy(&devlink->snapshot_ids);
+ xa_erase(&devlinks, devlink->index);
+
+ kfree(devlink);
+}
+EXPORT_SYMBOL_GPL(devlink_free);
+
+static void devlink_port_type_warn(struct work_struct *work)
+{
+ struct devlink_port *port = container_of(to_delayed_work(work),
+ struct devlink_port,
+ type_warn_dw);
+ dev_warn(port->devlink->dev, "Type was not set for devlink port.");
+}
+
+static bool devlink_port_type_should_warn(struct devlink_port *devlink_port)
+{
+ /* Ignore CPU and DSA flavours. */
+ return devlink_port->attrs.flavour != DEVLINK_PORT_FLAVOUR_CPU &&
+ devlink_port->attrs.flavour != DEVLINK_PORT_FLAVOUR_DSA &&
+ devlink_port->attrs.flavour != DEVLINK_PORT_FLAVOUR_UNUSED;
+}
+
+#define DEVLINK_PORT_TYPE_WARN_TIMEOUT (HZ * 3600)
+
+static void devlink_port_type_warn_schedule(struct devlink_port *devlink_port)
+{
+ if (!devlink_port_type_should_warn(devlink_port))
+ return;
+ /* Schedule a work to WARN in case driver does not set port
+ * type within timeout.
+ */
+ schedule_delayed_work(&devlink_port->type_warn_dw,
+ DEVLINK_PORT_TYPE_WARN_TIMEOUT);
+}
+
+static void devlink_port_type_warn_cancel(struct devlink_port *devlink_port)
+{
+ if (!devlink_port_type_should_warn(devlink_port))
+ return;
+ cancel_delayed_work_sync(&devlink_port->type_warn_dw);
+}
+
+/**
+ * devlink_port_init() - Init devlink port
+ *
+ * @devlink: devlink
+ * @devlink_port: devlink port
+ *
+ * Initialize essencial stuff that is needed for functions
+ * that may be called before devlink port registration.
+ * Call to this function is optional and not needed
+ * in case the driver does not use such functions.
+ */
+void devlink_port_init(struct devlink *devlink,
+ struct devlink_port *devlink_port)
+{
+ if (devlink_port->initialized)
+ return;
+ devlink_port->devlink = devlink;
+ INIT_LIST_HEAD(&devlink_port->region_list);
+ devlink_port->initialized = true;
+}
+EXPORT_SYMBOL_GPL(devlink_port_init);
+
+/**
+ * devlink_port_fini() - Deinitialize devlink port
+ *
+ * @devlink_port: devlink port
+ *
+ * Deinitialize essencial stuff that is in use for functions
+ * that may be called after devlink port unregistration.
+ * Call to this function is optional and not needed
+ * in case the driver does not use such functions.
+ */
+void devlink_port_fini(struct devlink_port *devlink_port)
+{
+ WARN_ON(!list_empty(&devlink_port->region_list));
+}
+EXPORT_SYMBOL_GPL(devlink_port_fini);
+
+/**
+ * devl_port_register() - Register devlink port
+ *
+ * @devlink: devlink
+ * @devlink_port: devlink port
+ * @port_index: driver-specific numerical identifier of the port
+ *
+ * Register devlink port with provided port index. User can use
+ * any indexing, even hw-related one. devlink_port structure
+ * is convenient to be embedded inside user driver private structure.
+ * Note that the caller should take care of zeroing the devlink_port
+ * structure.
+ */
+int devl_port_register(struct devlink *devlink,
+ struct devlink_port *devlink_port,
+ unsigned int port_index)
+{
+ devl_assert_locked(devlink);
+
+ if (devlink_port_index_exists(devlink, port_index))
+ return -EEXIST;
+
+ ASSERT_DEVLINK_PORT_NOT_REGISTERED(devlink_port);
+
+ devlink_port_init(devlink, devlink_port);
+ devlink_port->registered = true;
+ devlink_port->index = port_index;
+ spin_lock_init(&devlink_port->type_lock);
+ INIT_LIST_HEAD(&devlink_port->reporter_list);
+ mutex_init(&devlink_port->reporters_lock);
+ list_add_tail(&devlink_port->list, &devlink->port_list);
+
+ INIT_DELAYED_WORK(&devlink_port->type_warn_dw, &devlink_port_type_warn);
+ devlink_port_type_warn_schedule(devlink_port);
+ devlink_port_notify(devlink_port, DEVLINK_CMD_PORT_NEW);
+ return 0;
+}
+EXPORT_SYMBOL_GPL(devl_port_register);
+
+/**
+ * devlink_port_register - Register devlink port
+ *
+ * @devlink: devlink
+ * @devlink_port: devlink port
+ * @port_index: driver-specific numerical identifier of the port
+ *
+ * Register devlink port with provided port index. User can use
+ * any indexing, even hw-related one. devlink_port structure
+ * is convenient to be embedded inside user driver private structure.
+ * Note that the caller should take care of zeroing the devlink_port
+ * structure.
+ *
+ * Context: Takes and release devlink->lock <mutex>.
+ */
+int devlink_port_register(struct devlink *devlink,
+ struct devlink_port *devlink_port,
+ unsigned int port_index)
+{
+ int err;
+
+ devl_lock(devlink);
+ err = devl_port_register(devlink, devlink_port, port_index);
+ devl_unlock(devlink);
+ return err;
+}
+EXPORT_SYMBOL_GPL(devlink_port_register);
+
+/**
+ * devl_port_unregister() - Unregister devlink port
+ *
+ * @devlink_port: devlink port
+ */
+void devl_port_unregister(struct devlink_port *devlink_port)
+{
+ lockdep_assert_held(&devlink_port->devlink->lock);
+
+ devlink_port_type_warn_cancel(devlink_port);
+ devlink_port_notify(devlink_port, DEVLINK_CMD_PORT_DEL);
+ list_del(&devlink_port->list);
+ WARN_ON(!list_empty(&devlink_port->reporter_list));
+ mutex_destroy(&devlink_port->reporters_lock);
+ devlink_port->registered = false;
+}
+EXPORT_SYMBOL_GPL(devl_port_unregister);
+
+/**
+ * devlink_port_unregister - Unregister devlink port
+ *
+ * @devlink_port: devlink port
+ *
+ * Context: Takes and release devlink->lock <mutex>.
+ */
+void devlink_port_unregister(struct devlink_port *devlink_port)
+{
+ struct devlink *devlink = devlink_port->devlink;
+
+ devl_lock(devlink);
+ devl_port_unregister(devlink_port);
+ devl_unlock(devlink);
+}
+EXPORT_SYMBOL_GPL(devlink_port_unregister);
+
+static void __devlink_port_type_set(struct devlink_port *devlink_port,
+ enum devlink_port_type type,
+ void *type_dev)
+{
+ ASSERT_DEVLINK_PORT_REGISTERED(devlink_port);
+
+ devlink_port_type_warn_cancel(devlink_port);
+ spin_lock_bh(&devlink_port->type_lock);
+ devlink_port->type = type;
+ devlink_port->type_dev = type_dev;
+ spin_unlock_bh(&devlink_port->type_lock);
+ devlink_port_notify(devlink_port, DEVLINK_CMD_PORT_NEW);
+}
+
+static void devlink_port_type_netdev_checks(struct devlink_port *devlink_port,
+ struct net_device *netdev)
+{
+ const struct net_device_ops *ops = netdev->netdev_ops;
+
+ /* If driver registers devlink port, it should set devlink port
+ * attributes accordingly so the compat functions are called
+ * and the original ops are not used.
+ */
+ if (ops->ndo_get_phys_port_name) {
+ /* Some drivers use the same set of ndos for netdevs
+ * that have devlink_port registered and also for
+ * those who don't. Make sure that ndo_get_phys_port_name
+ * returns -EOPNOTSUPP here in case it is defined.
+ * Warn if not.
+ */
+ char name[IFNAMSIZ];
+ int err;
+
+ err = ops->ndo_get_phys_port_name(netdev, name, sizeof(name));
+ WARN_ON(err != -EOPNOTSUPP);
+ }
+ if (ops->ndo_get_port_parent_id) {
+ /* Some drivers use the same set of ndos for netdevs
+ * that have devlink_port registered and also for
+ * those who don't. Make sure that ndo_get_port_parent_id
+ * returns -EOPNOTSUPP here in case it is defined.
+ * Warn if not.
+ */
+ struct netdev_phys_item_id ppid;
+ int err;
+
+ err = ops->ndo_get_port_parent_id(netdev, &ppid);
+ WARN_ON(err != -EOPNOTSUPP);
+ }
+}
+
+/**
+ * devlink_port_type_eth_set - Set port type to Ethernet
+ *
+ * @devlink_port: devlink port
+ * @netdev: related netdevice
+ */
+void devlink_port_type_eth_set(struct devlink_port *devlink_port,
+ struct net_device *netdev)
+{
+ if (netdev)
+ devlink_port_type_netdev_checks(devlink_port, netdev);
+ else
+ dev_warn(devlink_port->devlink->dev,
+ "devlink port type for port %d set to Ethernet without a software interface reference, device type not supported by the kernel?\n",
+ devlink_port->index);
+
+ __devlink_port_type_set(devlink_port, DEVLINK_PORT_TYPE_ETH, netdev);
+}
+EXPORT_SYMBOL_GPL(devlink_port_type_eth_set);
+
+/**
+ * devlink_port_type_ib_set - Set port type to InfiniBand
+ *
+ * @devlink_port: devlink port
+ * @ibdev: related IB device
+ */
+void devlink_port_type_ib_set(struct devlink_port *devlink_port,
+ struct ib_device *ibdev)
+{
+ __devlink_port_type_set(devlink_port, DEVLINK_PORT_TYPE_IB, ibdev);
+}
+EXPORT_SYMBOL_GPL(devlink_port_type_ib_set);
+
+/**
+ * devlink_port_type_clear - Clear port type
+ *
+ * @devlink_port: devlink port
+ */
+void devlink_port_type_clear(struct devlink_port *devlink_port)
+{
+ __devlink_port_type_set(devlink_port, DEVLINK_PORT_TYPE_NOTSET, NULL);
+ devlink_port_type_warn_schedule(devlink_port);
+}
+EXPORT_SYMBOL_GPL(devlink_port_type_clear);
+
+static int __devlink_port_attrs_set(struct devlink_port *devlink_port,
+ enum devlink_port_flavour flavour)
+{
+ struct devlink_port_attrs *attrs = &devlink_port->attrs;
+
+ devlink_port->attrs_set = true;
+ attrs->flavour = flavour;
+ if (attrs->switch_id.id_len) {
+ devlink_port->switch_port = true;
+ if (WARN_ON(attrs->switch_id.id_len > MAX_PHYS_ITEM_ID_LEN))
+ attrs->switch_id.id_len = MAX_PHYS_ITEM_ID_LEN;
+ } else {
+ devlink_port->switch_port = false;
+ }
+ return 0;
+}
+
+/**
+ * devlink_port_attrs_set - Set port attributes
+ *
+ * @devlink_port: devlink port
+ * @attrs: devlink port attrs
+ */
+void devlink_port_attrs_set(struct devlink_port *devlink_port,
+ struct devlink_port_attrs *attrs)
+{
+ int ret;
+
+ ASSERT_DEVLINK_PORT_NOT_REGISTERED(devlink_port);
+
+ devlink_port->attrs = *attrs;
+ ret = __devlink_port_attrs_set(devlink_port, attrs->flavour);
+ if (ret)
+ return;
+ WARN_ON(attrs->splittable && attrs->split);
+}
+EXPORT_SYMBOL_GPL(devlink_port_attrs_set);
+
+/**
+ * devlink_port_attrs_pci_pf_set - Set PCI PF port attributes
+ *
+ * @devlink_port: devlink port
+ * @controller: associated controller number for the devlink port instance
+ * @pf: associated PF for the devlink port instance
+ * @external: indicates if the port is for an external controller
+ */
+void devlink_port_attrs_pci_pf_set(struct devlink_port *devlink_port, u32 controller,
+ u16 pf, bool external)
+{
+ struct devlink_port_attrs *attrs = &devlink_port->attrs;
+ int ret;
+
+ ASSERT_DEVLINK_PORT_NOT_REGISTERED(devlink_port);
+
+ ret = __devlink_port_attrs_set(devlink_port,
+ DEVLINK_PORT_FLAVOUR_PCI_PF);
+ if (ret)
+ return;
+ attrs->pci_pf.controller = controller;
+ attrs->pci_pf.pf = pf;
+ attrs->pci_pf.external = external;
+}
+EXPORT_SYMBOL_GPL(devlink_port_attrs_pci_pf_set);
+
+/**
+ * devlink_port_attrs_pci_vf_set - Set PCI VF port attributes
+ *
+ * @devlink_port: devlink port
+ * @controller: associated controller number for the devlink port instance
+ * @pf: associated PF for the devlink port instance
+ * @vf: associated VF of a PF for the devlink port instance
+ * @external: indicates if the port is for an external controller
+ */
+void devlink_port_attrs_pci_vf_set(struct devlink_port *devlink_port, u32 controller,
+ u16 pf, u16 vf, bool external)
+{
+ struct devlink_port_attrs *attrs = &devlink_port->attrs;
+ int ret;
+
+ ASSERT_DEVLINK_PORT_NOT_REGISTERED(devlink_port);
+
+ ret = __devlink_port_attrs_set(devlink_port,
+ DEVLINK_PORT_FLAVOUR_PCI_VF);
+ if (ret)
+ return;
+ attrs->pci_vf.controller = controller;
+ attrs->pci_vf.pf = pf;
+ attrs->pci_vf.vf = vf;
+ attrs->pci_vf.external = external;
+}
+EXPORT_SYMBOL_GPL(devlink_port_attrs_pci_vf_set);
+
+/**
+ * devlink_port_attrs_pci_sf_set - Set PCI SF port attributes
+ *
+ * @devlink_port: devlink port
+ * @controller: associated controller number for the devlink port instance
+ * @pf: associated PF for the devlink port instance
+ * @sf: associated SF of a PF for the devlink port instance
+ * @external: indicates if the port is for an external controller
+ */
+void devlink_port_attrs_pci_sf_set(struct devlink_port *devlink_port, u32 controller,
+ u16 pf, u32 sf, bool external)
+{
+ struct devlink_port_attrs *attrs = &devlink_port->attrs;
+ int ret;
+
+ ASSERT_DEVLINK_PORT_NOT_REGISTERED(devlink_port);
+
+ ret = __devlink_port_attrs_set(devlink_port,
+ DEVLINK_PORT_FLAVOUR_PCI_SF);
+ if (ret)
+ return;
+ attrs->pci_sf.controller = controller;
+ attrs->pci_sf.pf = pf;
+ attrs->pci_sf.sf = sf;
+ attrs->pci_sf.external = external;
+}
+EXPORT_SYMBOL_GPL(devlink_port_attrs_pci_sf_set);
+
+/**
+ * devl_rate_leaf_create - create devlink rate leaf
+ * @devlink_port: devlink port object to create rate object on
+ * @priv: driver private data
+ *
+ * Create devlink rate object of type leaf on provided @devlink_port.
+ */
+int devl_rate_leaf_create(struct devlink_port *devlink_port, void *priv)
+{
+ struct devlink *devlink = devlink_port->devlink;
+ struct devlink_rate *devlink_rate;
+
+ devl_assert_locked(devlink_port->devlink);
+
+ if (WARN_ON(devlink_port->devlink_rate))
+ return -EBUSY;
+
+ devlink_rate = kzalloc(sizeof(*devlink_rate), GFP_KERNEL);
+ if (!devlink_rate)
+ return -ENOMEM;
+
+ devlink_rate->type = DEVLINK_RATE_TYPE_LEAF;
+ devlink_rate->devlink = devlink;
+ devlink_rate->devlink_port = devlink_port;
+ devlink_rate->priv = priv;
+ list_add_tail(&devlink_rate->list, &devlink->rate_list);
+ devlink_port->devlink_rate = devlink_rate;
+ devlink_rate_notify(devlink_rate, DEVLINK_CMD_RATE_NEW);
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(devl_rate_leaf_create);
+
+/**
+ * devl_rate_leaf_destroy - destroy devlink rate leaf
+ *
+ * @devlink_port: devlink port linked to the rate object
+ *
+ * Destroy the devlink rate object of type leaf on provided @devlink_port.
+ */
+void devl_rate_leaf_destroy(struct devlink_port *devlink_port)
+{
+ struct devlink_rate *devlink_rate = devlink_port->devlink_rate;
+
+ devl_assert_locked(devlink_port->devlink);
+ if (!devlink_rate)
+ return;
+
+ devlink_rate_notify(devlink_rate, DEVLINK_CMD_RATE_DEL);
+ if (devlink_rate->parent)
+ refcount_dec(&devlink_rate->parent->refcnt);
+ list_del(&devlink_rate->list);
+ devlink_port->devlink_rate = NULL;
+ kfree(devlink_rate);
+}
+EXPORT_SYMBOL_GPL(devl_rate_leaf_destroy);
+
+/**
+ * devl_rate_nodes_destroy - destroy all devlink rate nodes on device
+ * @devlink: devlink instance
+ *
+ * Unset parent for all rate objects and destroy all rate nodes
+ * on specified device.
+ */
+void devl_rate_nodes_destroy(struct devlink *devlink)
+{
+ static struct devlink_rate *devlink_rate, *tmp;
+ const struct devlink_ops *ops = devlink->ops;
+
+ devl_assert_locked(devlink);
+
+ list_for_each_entry(devlink_rate, &devlink->rate_list, list) {
+ if (!devlink_rate->parent)
+ continue;
+
+ refcount_dec(&devlink_rate->parent->refcnt);
+ if (devlink_rate_is_leaf(devlink_rate))
+ ops->rate_leaf_parent_set(devlink_rate, NULL, devlink_rate->priv,
+ NULL, NULL);
+ else if (devlink_rate_is_node(devlink_rate))
+ ops->rate_node_parent_set(devlink_rate, NULL, devlink_rate->priv,
+ NULL, NULL);
+ }
+ list_for_each_entry_safe(devlink_rate, tmp, &devlink->rate_list, list) {
+ if (devlink_rate_is_node(devlink_rate)) {
+ ops->rate_node_del(devlink_rate, devlink_rate->priv, NULL);
+ list_del(&devlink_rate->list);
+ kfree(devlink_rate->name);
+ kfree(devlink_rate);
+ }
+ }
+}
+EXPORT_SYMBOL_GPL(devl_rate_nodes_destroy);
+
+/**
+ * devlink_port_linecard_set - Link port with a linecard
+ *
+ * @devlink_port: devlink port
+ * @linecard: devlink linecard
+ */
+void devlink_port_linecard_set(struct devlink_port *devlink_port,
+ struct devlink_linecard *linecard)
+{
+ ASSERT_DEVLINK_PORT_NOT_REGISTERED(devlink_port);
+
+ devlink_port->linecard = linecard;
+}
+EXPORT_SYMBOL_GPL(devlink_port_linecard_set);
+
+static int __devlink_port_phys_port_name_get(struct devlink_port *devlink_port,
+ char *name, size_t len)
+{
+ struct devlink_port_attrs *attrs = &devlink_port->attrs;
+ int n = 0;
+
+ if (!devlink_port->attrs_set)
+ return -EOPNOTSUPP;
+
+ switch (attrs->flavour) {
+ case DEVLINK_PORT_FLAVOUR_PHYSICAL:
+ if (devlink_port->linecard)
+ n = snprintf(name, len, "l%u",
+ devlink_port->linecard->index);
+ if (n < len)
+ n += snprintf(name + n, len - n, "p%u",
+ attrs->phys.port_number);
+ if (n < len && attrs->split)
+ n += snprintf(name + n, len - n, "s%u",
+ attrs->phys.split_subport_number);
+ break;
+ case DEVLINK_PORT_FLAVOUR_CPU:
+ case DEVLINK_PORT_FLAVOUR_DSA:
+ case DEVLINK_PORT_FLAVOUR_UNUSED:
+ /* As CPU and DSA ports do not have a netdevice associated
+ * case should not ever happen.
+ */
+ WARN_ON(1);
+ return -EINVAL;
+ case DEVLINK_PORT_FLAVOUR_PCI_PF:
+ if (attrs->pci_pf.external) {
+ n = snprintf(name, len, "c%u", attrs->pci_pf.controller);
+ if (n >= len)
+ return -EINVAL;
+ len -= n;
+ name += n;
+ }
+ n = snprintf(name, len, "pf%u", attrs->pci_pf.pf);
+ break;
+ case DEVLINK_PORT_FLAVOUR_PCI_VF:
+ if (attrs->pci_vf.external) {
+ n = snprintf(name, len, "c%u", attrs->pci_vf.controller);
+ if (n >= len)
+ return -EINVAL;
+ len -= n;
+ name += n;
+ }
+ n = snprintf(name, len, "pf%uvf%u",
+ attrs->pci_vf.pf, attrs->pci_vf.vf);
+ break;
+ case DEVLINK_PORT_FLAVOUR_PCI_SF:
+ if (attrs->pci_sf.external) {
+ n = snprintf(name, len, "c%u", attrs->pci_sf.controller);
+ if (n >= len)
+ return -EINVAL;
+ len -= n;
+ name += n;
+ }
+ n = snprintf(name, len, "pf%usf%u", attrs->pci_sf.pf,
+ attrs->pci_sf.sf);
+ break;
+ case DEVLINK_PORT_FLAVOUR_VIRTUAL:
+ return -EOPNOTSUPP;
+ }
+
+ if (n >= len)
+ return -EINVAL;
+
+ return 0;
+}
+
+static int devlink_linecard_types_init(struct devlink_linecard *linecard)
+{
+ struct devlink_linecard_type *linecard_type;
+ unsigned int count;
+ int i;
+
+ count = linecard->ops->types_count(linecard, linecard->priv);
+ linecard->types = kmalloc_array(count, sizeof(*linecard_type),
+ GFP_KERNEL);
+ if (!linecard->types)
+ return -ENOMEM;
+ linecard->types_count = count;
+
+ for (i = 0; i < count; i++) {
+ linecard_type = &linecard->types[i];
+ linecard->ops->types_get(linecard, linecard->priv, i,
+ &linecard_type->type,
+ &linecard_type->priv);
+ }
+ return 0;
+}
+
+static void devlink_linecard_types_fini(struct devlink_linecard *linecard)
+{
+ kfree(linecard->types);
+}
+
+/**
+ * devlink_linecard_create - Create devlink linecard
+ *
+ * @devlink: devlink
+ * @linecard_index: driver-specific numerical identifier of the linecard
+ * @ops: linecards ops
+ * @priv: user priv pointer
+ *
+ * Create devlink linecard instance with provided linecard index.
+ * Caller can use any indexing, even hw-related one.
+ *
+ * Return: Line card structure or an ERR_PTR() encoded error code.
+ */
+struct devlink_linecard *
+devlink_linecard_create(struct devlink *devlink, unsigned int linecard_index,
+ const struct devlink_linecard_ops *ops, void *priv)
+{
+ struct devlink_linecard *linecard;
+ int err;
+
+ if (WARN_ON(!ops || !ops->provision || !ops->unprovision ||
+ !ops->types_count || !ops->types_get))
+ return ERR_PTR(-EINVAL);
+
+ mutex_lock(&devlink->linecards_lock);
+ if (devlink_linecard_index_exists(devlink, linecard_index)) {
+ mutex_unlock(&devlink->linecards_lock);
+ return ERR_PTR(-EEXIST);
+ }
+
+ linecard = kzalloc(sizeof(*linecard), GFP_KERNEL);
+ if (!linecard) {
+ mutex_unlock(&devlink->linecards_lock);
+ return ERR_PTR(-ENOMEM);
+ }
+
+ linecard->devlink = devlink;
+ linecard->index = linecard_index;
+ linecard->ops = ops;
+ linecard->priv = priv;
+ linecard->state = DEVLINK_LINECARD_STATE_UNPROVISIONED;
+ mutex_init(&linecard->state_lock);
+
+ err = devlink_linecard_types_init(linecard);
+ if (err) {
+ mutex_destroy(&linecard->state_lock);
+ kfree(linecard);
+ mutex_unlock(&devlink->linecards_lock);
+ return ERR_PTR(err);
+ }
+
+ list_add_tail(&linecard->list, &devlink->linecard_list);
+ refcount_set(&linecard->refcount, 1);
+ mutex_unlock(&devlink->linecards_lock);
+ devlink_linecard_notify(linecard, DEVLINK_CMD_LINECARD_NEW);
+ return linecard;
+}
+EXPORT_SYMBOL_GPL(devlink_linecard_create);
+
+/**
+ * devlink_linecard_destroy - Destroy devlink linecard
+ *
+ * @linecard: devlink linecard
+ */
+void devlink_linecard_destroy(struct devlink_linecard *linecard)
+{
+ struct devlink *devlink = linecard->devlink;
+
+ devlink_linecard_notify(linecard, DEVLINK_CMD_LINECARD_DEL);
+ mutex_lock(&devlink->linecards_lock);
+ list_del(&linecard->list);
+ devlink_linecard_types_fini(linecard);
+ mutex_unlock(&devlink->linecards_lock);
+ devlink_linecard_put(linecard);
+}
+EXPORT_SYMBOL_GPL(devlink_linecard_destroy);
+
+/**
+ * devlink_linecard_provision_set - Set provisioning on linecard
+ *
+ * @linecard: devlink linecard
+ * @type: linecard type
+ *
+ * This is either called directly from the provision() op call or
+ * as a result of the provision() op call asynchronously.
+ */
+void devlink_linecard_provision_set(struct devlink_linecard *linecard,
+ const char *type)
+{
+ mutex_lock(&linecard->state_lock);
+ WARN_ON(linecard->type && strcmp(linecard->type, type));
+ linecard->state = DEVLINK_LINECARD_STATE_PROVISIONED;
+ linecard->type = type;
+ devlink_linecard_notify(linecard, DEVLINK_CMD_LINECARD_NEW);
+ mutex_unlock(&linecard->state_lock);
+}
+EXPORT_SYMBOL_GPL(devlink_linecard_provision_set);
+
+/**
+ * devlink_linecard_provision_clear - Clear provisioning on linecard
+ *
+ * @linecard: devlink linecard
+ *
+ * This is either called directly from the unprovision() op call or
+ * as a result of the unprovision() op call asynchronously.
+ */
+void devlink_linecard_provision_clear(struct devlink_linecard *linecard)
+{
+ mutex_lock(&linecard->state_lock);
+ WARN_ON(linecard->nested_devlink);
+ linecard->state = DEVLINK_LINECARD_STATE_UNPROVISIONED;
+ linecard->type = NULL;
+ devlink_linecard_notify(linecard, DEVLINK_CMD_LINECARD_NEW);
+ mutex_unlock(&linecard->state_lock);
+}
+EXPORT_SYMBOL_GPL(devlink_linecard_provision_clear);
+
+/**
+ * devlink_linecard_provision_fail - Fail provisioning on linecard
+ *
+ * @linecard: devlink linecard
+ *
+ * This is either called directly from the provision() op call or
+ * as a result of the provision() op call asynchronously.
+ */
+void devlink_linecard_provision_fail(struct devlink_linecard *linecard)
+{
+ mutex_lock(&linecard->state_lock);
+ WARN_ON(linecard->nested_devlink);
+ linecard->state = DEVLINK_LINECARD_STATE_PROVISIONING_FAILED;
+ devlink_linecard_notify(linecard, DEVLINK_CMD_LINECARD_NEW);
+ mutex_unlock(&linecard->state_lock);
+}
+EXPORT_SYMBOL_GPL(devlink_linecard_provision_fail);
+
+/**
+ * devlink_linecard_activate - Set linecard active
+ *
+ * @linecard: devlink linecard
+ */
+void devlink_linecard_activate(struct devlink_linecard *linecard)
+{
+ mutex_lock(&linecard->state_lock);
+ WARN_ON(linecard->state != DEVLINK_LINECARD_STATE_PROVISIONED);
+ linecard->state = DEVLINK_LINECARD_STATE_ACTIVE;
+ devlink_linecard_notify(linecard, DEVLINK_CMD_LINECARD_NEW);
+ mutex_unlock(&linecard->state_lock);
+}
+EXPORT_SYMBOL_GPL(devlink_linecard_activate);
+
+/**
+ * devlink_linecard_deactivate - Set linecard inactive
+ *
+ * @linecard: devlink linecard
+ */
+void devlink_linecard_deactivate(struct devlink_linecard *linecard)
+{
+ mutex_lock(&linecard->state_lock);
+ switch (linecard->state) {
+ case DEVLINK_LINECARD_STATE_ACTIVE:
+ linecard->state = DEVLINK_LINECARD_STATE_PROVISIONED;
+ devlink_linecard_notify(linecard, DEVLINK_CMD_LINECARD_NEW);
+ break;
+ case DEVLINK_LINECARD_STATE_UNPROVISIONING:
+ /* Line card is being deactivated as part
+ * of unprovisioning flow.
+ */
+ break;
+ default:
+ WARN_ON(1);
+ break;
+ }
+ mutex_unlock(&linecard->state_lock);
+}
+EXPORT_SYMBOL_GPL(devlink_linecard_deactivate);
+
+/**
+ * devlink_linecard_nested_dl_set - Attach/detach nested devlink
+ * instance to linecard.
+ *
+ * @linecard: devlink linecard
+ * @nested_devlink: devlink instance to attach or NULL to detach
+ */
+void devlink_linecard_nested_dl_set(struct devlink_linecard *linecard,
+ struct devlink *nested_devlink)
+{
+ mutex_lock(&linecard->state_lock);
+ linecard->nested_devlink = nested_devlink;
+ devlink_linecard_notify(linecard, DEVLINK_CMD_LINECARD_NEW);
+ mutex_unlock(&linecard->state_lock);
+}
+EXPORT_SYMBOL_GPL(devlink_linecard_nested_dl_set);
+
+int devl_sb_register(struct devlink *devlink, unsigned int sb_index,
+ u32 size, u16 ingress_pools_count,
+ u16 egress_pools_count, u16 ingress_tc_count,
+ u16 egress_tc_count)
+{
+ struct devlink_sb *devlink_sb;
+
+ lockdep_assert_held(&devlink->lock);
+
+ if (devlink_sb_index_exists(devlink, sb_index))
+ return -EEXIST;
+
+ devlink_sb = kzalloc(sizeof(*devlink_sb), GFP_KERNEL);
+ if (!devlink_sb)
+ return -ENOMEM;
+ devlink_sb->index = sb_index;
+ devlink_sb->size = size;
+ devlink_sb->ingress_pools_count = ingress_pools_count;
+ devlink_sb->egress_pools_count = egress_pools_count;
+ devlink_sb->ingress_tc_count = ingress_tc_count;
+ devlink_sb->egress_tc_count = egress_tc_count;
+ list_add_tail(&devlink_sb->list, &devlink->sb_list);
+ return 0;
+}
+EXPORT_SYMBOL_GPL(devl_sb_register);
+
+int devlink_sb_register(struct devlink *devlink, unsigned int sb_index,
+ u32 size, u16 ingress_pools_count,
+ u16 egress_pools_count, u16 ingress_tc_count,
+ u16 egress_tc_count)
+{
+ int err;
+
+ devl_lock(devlink);
+ err = devl_sb_register(devlink, sb_index, size, ingress_pools_count,
+ egress_pools_count, ingress_tc_count,
+ egress_tc_count);
+ devl_unlock(devlink);
+ return err;
+}
+EXPORT_SYMBOL_GPL(devlink_sb_register);
+
+void devl_sb_unregister(struct devlink *devlink, unsigned int sb_index)
+{
+ struct devlink_sb *devlink_sb;
+
+ lockdep_assert_held(&devlink->lock);
+
+ devlink_sb = devlink_sb_get_by_index(devlink, sb_index);
+ WARN_ON(!devlink_sb);
+ list_del(&devlink_sb->list);
+ kfree(devlink_sb);
+}
+EXPORT_SYMBOL_GPL(devl_sb_unregister);
+
+void devlink_sb_unregister(struct devlink *devlink, unsigned int sb_index)
+{
+ devl_lock(devlink);
+ devl_sb_unregister(devlink, sb_index);
+ devl_unlock(devlink);
+}
+EXPORT_SYMBOL_GPL(devlink_sb_unregister);
+
+/**
+ * devl_dpipe_headers_register - register dpipe headers
+ *
+ * @devlink: devlink
+ * @dpipe_headers: dpipe header array
+ *
+ * Register the headers supported by hardware.
+ */
+void devl_dpipe_headers_register(struct devlink *devlink,
+ struct devlink_dpipe_headers *dpipe_headers)
+{
+ lockdep_assert_held(&devlink->lock);
+
+ devlink->dpipe_headers = dpipe_headers;
+}
+EXPORT_SYMBOL_GPL(devl_dpipe_headers_register);
+
+/**
+ * devl_dpipe_headers_unregister - unregister dpipe headers
+ *
+ * @devlink: devlink
+ *
+ * Unregister the headers supported by hardware.
+ */
+void devl_dpipe_headers_unregister(struct devlink *devlink)
+{
+ lockdep_assert_held(&devlink->lock);
+
+ devlink->dpipe_headers = NULL;
+}
+EXPORT_SYMBOL_GPL(devl_dpipe_headers_unregister);
+
+/**
+ * devlink_dpipe_table_counter_enabled - check if counter allocation
+ * required
+ * @devlink: devlink
+ * @table_name: tables name
+ *
+ * Used by driver to check if counter allocation is required.
+ * After counter allocation is turned on the table entries
+ * are updated to include counter statistics.
+ *
+ * After that point on the driver must respect the counter
+ * state so that each entry added to the table is added
+ * with a counter.
+ */
+bool devlink_dpipe_table_counter_enabled(struct devlink *devlink,
+ const char *table_name)
+{
+ struct devlink_dpipe_table *table;
+ bool enabled;
+
+ rcu_read_lock();
+ table = devlink_dpipe_table_find(&devlink->dpipe_table_list,
+ table_name, devlink);
+ enabled = false;
+ if (table)
+ enabled = table->counters_enabled;
+ rcu_read_unlock();
+ return enabled;
+}
+EXPORT_SYMBOL_GPL(devlink_dpipe_table_counter_enabled);
+
+/**
+ * devl_dpipe_table_register - register dpipe table
+ *
+ * @devlink: devlink
+ * @table_name: table name
+ * @table_ops: table ops
+ * @priv: priv
+ * @counter_control_extern: external control for counters
+ */
+int devl_dpipe_table_register(struct devlink *devlink,
+ const char *table_name,
+ struct devlink_dpipe_table_ops *table_ops,
+ void *priv, bool counter_control_extern)
+{
+ struct devlink_dpipe_table *table;
+
+ lockdep_assert_held(&devlink->lock);
+
+ if (WARN_ON(!table_ops->size_get))
+ return -EINVAL;
+
+ if (devlink_dpipe_table_find(&devlink->dpipe_table_list, table_name,
+ devlink))
+ return -EEXIST;
+
+ table = kzalloc(sizeof(*table), GFP_KERNEL);
+ if (!table)
+ return -ENOMEM;
+
+ table->name = table_name;
+ table->table_ops = table_ops;
+ table->priv = priv;
+ table->counter_control_extern = counter_control_extern;
+
+ list_add_tail_rcu(&table->list, &devlink->dpipe_table_list);
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(devl_dpipe_table_register);
+
+/**
+ * devl_dpipe_table_unregister - unregister dpipe table
+ *
+ * @devlink: devlink
+ * @table_name: table name
+ */
+void devl_dpipe_table_unregister(struct devlink *devlink,
+ const char *table_name)
+{
+ struct devlink_dpipe_table *table;
+
+ lockdep_assert_held(&devlink->lock);
+
+ table = devlink_dpipe_table_find(&devlink->dpipe_table_list,
+ table_name, devlink);
+ if (!table)
+ return;
+ list_del_rcu(&table->list);
+ kfree_rcu(table, rcu);
+}
+EXPORT_SYMBOL_GPL(devl_dpipe_table_unregister);
+
+/**
+ * devl_resource_register - devlink resource register
+ *
+ * @devlink: devlink
+ * @resource_name: resource's name
+ * @resource_size: resource's size
+ * @resource_id: resource's id
+ * @parent_resource_id: resource's parent id
+ * @size_params: size parameters
+ *
+ * Generic resources should reuse the same names across drivers.
+ * Please see the generic resources list at:
+ * Documentation/networking/devlink/devlink-resource.rst
+ */
+int devl_resource_register(struct devlink *devlink,
+ const char *resource_name,
+ u64 resource_size,
+ u64 resource_id,
+ u64 parent_resource_id,
+ const struct devlink_resource_size_params *size_params)
+{
+ struct devlink_resource *resource;
+ struct list_head *resource_list;
+ bool top_hierarchy;
+
+ lockdep_assert_held(&devlink->lock);
+
+ top_hierarchy = parent_resource_id == DEVLINK_RESOURCE_ID_PARENT_TOP;
+
+ resource = devlink_resource_find(devlink, NULL, resource_id);
+ if (resource)
+ return -EINVAL;
+
+ resource = kzalloc(sizeof(*resource), GFP_KERNEL);
+ if (!resource)
+ return -ENOMEM;
+
+ if (top_hierarchy) {
+ resource_list = &devlink->resource_list;
+ } else {
+ struct devlink_resource *parent_resource;
+
+ parent_resource = devlink_resource_find(devlink, NULL,
+ parent_resource_id);
+ if (parent_resource) {
+ resource_list = &parent_resource->resource_list;
+ resource->parent = parent_resource;
+ } else {
+ kfree(resource);
+ return -EINVAL;
+ }
+ }
+
+ resource->name = resource_name;
+ resource->size = resource_size;
+ resource->size_new = resource_size;
+ resource->id = resource_id;
+ resource->size_valid = true;
+ memcpy(&resource->size_params, size_params,
+ sizeof(resource->size_params));
+ INIT_LIST_HEAD(&resource->resource_list);
+ list_add_tail(&resource->list, resource_list);
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(devl_resource_register);
+
+/**
+ * devlink_resource_register - devlink resource register
+ *
+ * @devlink: devlink
+ * @resource_name: resource's name
+ * @resource_size: resource's size
+ * @resource_id: resource's id
+ * @parent_resource_id: resource's parent id
+ * @size_params: size parameters
+ *
+ * Generic resources should reuse the same names across drivers.
+ * Please see the generic resources list at:
+ * Documentation/networking/devlink/devlink-resource.rst
+ *
+ * Context: Takes and release devlink->lock <mutex>.
+ */
+int devlink_resource_register(struct devlink *devlink,
+ const char *resource_name,
+ u64 resource_size,
+ u64 resource_id,
+ u64 parent_resource_id,
+ const struct devlink_resource_size_params *size_params)
+{
+ int err;
+
+ devl_lock(devlink);
+ err = devl_resource_register(devlink, resource_name, resource_size,
+ resource_id, parent_resource_id, size_params);
+ devl_unlock(devlink);
+ return err;
+}
+EXPORT_SYMBOL_GPL(devlink_resource_register);
+
+static void devlink_resource_unregister(struct devlink *devlink,
+ struct devlink_resource *resource)
+{
+ struct devlink_resource *tmp, *child_resource;
+
+ list_for_each_entry_safe(child_resource, tmp, &resource->resource_list,
+ list) {
+ devlink_resource_unregister(devlink, child_resource);
+ list_del(&child_resource->list);
+ kfree(child_resource);
+ }
+}
+
+/**
+ * devl_resources_unregister - free all resources
+ *
+ * @devlink: devlink
+ */
+void devl_resources_unregister(struct devlink *devlink)
+{
+ struct devlink_resource *tmp, *child_resource;
+
+ lockdep_assert_held(&devlink->lock);
+
+ list_for_each_entry_safe(child_resource, tmp, &devlink->resource_list,
+ list) {
+ devlink_resource_unregister(devlink, child_resource);
+ list_del(&child_resource->list);
+ kfree(child_resource);
+ }
+}
+EXPORT_SYMBOL_GPL(devl_resources_unregister);
+
+/**
+ * devlink_resources_unregister - free all resources
+ *
+ * @devlink: devlink
+ *
+ * Context: Takes and release devlink->lock <mutex>.
+ */
+void devlink_resources_unregister(struct devlink *devlink)
+{
+ devl_lock(devlink);
+ devl_resources_unregister(devlink);
+ devl_unlock(devlink);
+}
+EXPORT_SYMBOL_GPL(devlink_resources_unregister);
+
+/**
+ * devl_resource_size_get - get and update size
+ *
+ * @devlink: devlink
+ * @resource_id: the requested resource id
+ * @p_resource_size: ptr to update
+ */
+int devl_resource_size_get(struct devlink *devlink,
+ u64 resource_id,
+ u64 *p_resource_size)
+{
+ struct devlink_resource *resource;
+
+ lockdep_assert_held(&devlink->lock);
+
+ resource = devlink_resource_find(devlink, NULL, resource_id);
+ if (!resource)
+ return -EINVAL;
+ *p_resource_size = resource->size_new;
+ resource->size = resource->size_new;
+ return 0;
+}
+EXPORT_SYMBOL_GPL(devl_resource_size_get);
+
+/**
+ * devl_dpipe_table_resource_set - set the resource id
+ *
+ * @devlink: devlink
+ * @table_name: table name
+ * @resource_id: resource id
+ * @resource_units: number of resource's units consumed per table's entry
+ */
+int devl_dpipe_table_resource_set(struct devlink *devlink,
+ const char *table_name, u64 resource_id,
+ u64 resource_units)
+{
+ struct devlink_dpipe_table *table;
+
+ table = devlink_dpipe_table_find(&devlink->dpipe_table_list,
+ table_name, devlink);
+ if (!table)
+ return -EINVAL;
+
+ table->resource_id = resource_id;
+ table->resource_units = resource_units;
+ table->resource_valid = true;
+ return 0;
+}
+EXPORT_SYMBOL_GPL(devl_dpipe_table_resource_set);
+
+/**
+ * devl_resource_occ_get_register - register occupancy getter
+ *
+ * @devlink: devlink
+ * @resource_id: resource id
+ * @occ_get: occupancy getter callback
+ * @occ_get_priv: occupancy getter callback priv
+ */
+void devl_resource_occ_get_register(struct devlink *devlink,
+ u64 resource_id,
+ devlink_resource_occ_get_t *occ_get,
+ void *occ_get_priv)
+{
+ struct devlink_resource *resource;
+
+ lockdep_assert_held(&devlink->lock);
+
+ resource = devlink_resource_find(devlink, NULL, resource_id);
+ if (WARN_ON(!resource))
+ return;
+ WARN_ON(resource->occ_get);
+
+ resource->occ_get = occ_get;
+ resource->occ_get_priv = occ_get_priv;
+}
+EXPORT_SYMBOL_GPL(devl_resource_occ_get_register);
+
+/**
+ * devlink_resource_occ_get_register - register occupancy getter
+ *
+ * @devlink: devlink
+ * @resource_id: resource id
+ * @occ_get: occupancy getter callback
+ * @occ_get_priv: occupancy getter callback priv
+ *
+ * Context: Takes and release devlink->lock <mutex>.
+ */
+void devlink_resource_occ_get_register(struct devlink *devlink,
+ u64 resource_id,
+ devlink_resource_occ_get_t *occ_get,
+ void *occ_get_priv)
+{
+ devl_lock(devlink);
+ devl_resource_occ_get_register(devlink, resource_id,
+ occ_get, occ_get_priv);
+ devl_unlock(devlink);
+}
+EXPORT_SYMBOL_GPL(devlink_resource_occ_get_register);
+
+/**
+ * devl_resource_occ_get_unregister - unregister occupancy getter
+ *
+ * @devlink: devlink
+ * @resource_id: resource id
+ */
+void devl_resource_occ_get_unregister(struct devlink *devlink,
+ u64 resource_id)
+{
+ struct devlink_resource *resource;
+
+ lockdep_assert_held(&devlink->lock);
+
+ resource = devlink_resource_find(devlink, NULL, resource_id);
+ if (WARN_ON(!resource))
+ return;
+ WARN_ON(!resource->occ_get);
+
+ resource->occ_get = NULL;
+ resource->occ_get_priv = NULL;
+}
+EXPORT_SYMBOL_GPL(devl_resource_occ_get_unregister);
+
+/**
+ * devlink_resource_occ_get_unregister - unregister occupancy getter
+ *
+ * @devlink: devlink
+ * @resource_id: resource id
+ *
+ * Context: Takes and release devlink->lock <mutex>.
+ */
+void devlink_resource_occ_get_unregister(struct devlink *devlink,
+ u64 resource_id)
+{
+ devl_lock(devlink);
+ devl_resource_occ_get_unregister(devlink, resource_id);
+ devl_unlock(devlink);
+}
+EXPORT_SYMBOL_GPL(devlink_resource_occ_get_unregister);
+
+static int devlink_param_verify(const struct devlink_param *param)
+{
+ if (!param || !param->name || !param->supported_cmodes)
+ return -EINVAL;
+ if (param->generic)
+ return devlink_param_generic_verify(param);
+ else
+ return devlink_param_driver_verify(param);
+}
+
+/**
+ * devlink_params_register - register configuration parameters
+ *
+ * @devlink: devlink
+ * @params: configuration parameters array
+ * @params_count: number of parameters provided
+ *
+ * Register the configuration parameters supported by the driver.
+ */
+int devlink_params_register(struct devlink *devlink,
+ const struct devlink_param *params,
+ size_t params_count)
+{
+ const struct devlink_param *param = params;
+ int i, err;
+
+ ASSERT_DEVLINK_NOT_REGISTERED(devlink);
+
+ for (i = 0; i < params_count; i++, param++) {
+ err = devlink_param_register(devlink, param);
+ if (err)
+ goto rollback;
+ }
+ return 0;
+
+rollback:
+ if (!i)
+ return err;
+
+ for (param--; i > 0; i--, param--)
+ devlink_param_unregister(devlink, param);
+ return err;
+}
+EXPORT_SYMBOL_GPL(devlink_params_register);
+
+/**
+ * devlink_params_unregister - unregister configuration parameters
+ * @devlink: devlink
+ * @params: configuration parameters to unregister
+ * @params_count: number of parameters provided
+ */
+void devlink_params_unregister(struct devlink *devlink,
+ const struct devlink_param *params,
+ size_t params_count)
+{
+ const struct devlink_param *param = params;
+ int i;
+
+ ASSERT_DEVLINK_NOT_REGISTERED(devlink);
+
+ for (i = 0; i < params_count; i++, param++)
+ devlink_param_unregister(devlink, param);
+}
+EXPORT_SYMBOL_GPL(devlink_params_unregister);
+
+/**
+ * devlink_param_register - register one configuration parameter
+ *
+ * @devlink: devlink
+ * @param: one configuration parameter
+ *
+ * Register the configuration parameter supported by the driver.
+ * Return: returns 0 on successful registration or error code otherwise.
+ */
+int devlink_param_register(struct devlink *devlink,
+ const struct devlink_param *param)
+{
+ struct devlink_param_item *param_item;
+
+ ASSERT_DEVLINK_NOT_REGISTERED(devlink);
+
+ WARN_ON(devlink_param_verify(param));
+ WARN_ON(devlink_param_find_by_name(&devlink->param_list, param->name));
+
+ if (param->supported_cmodes == BIT(DEVLINK_PARAM_CMODE_DRIVERINIT))
+ WARN_ON(param->get || param->set);
+ else
+ WARN_ON(!param->get || !param->set);
+
+ param_item = kzalloc(sizeof(*param_item), GFP_KERNEL);
+ if (!param_item)
+ return -ENOMEM;
+
+ param_item->param = param;
+
+ list_add_tail(&param_item->list, &devlink->param_list);
+ return 0;
+}
+EXPORT_SYMBOL_GPL(devlink_param_register);
+
+/**
+ * devlink_param_unregister - unregister one configuration parameter
+ * @devlink: devlink
+ * @param: configuration parameter to unregister
+ */
+void devlink_param_unregister(struct devlink *devlink,
+ const struct devlink_param *param)
+{
+ struct devlink_param_item *param_item;
+
+ ASSERT_DEVLINK_NOT_REGISTERED(devlink);
+
+ param_item =
+ devlink_param_find_by_name(&devlink->param_list, param->name);
+ WARN_ON(!param_item);
+ list_del(&param_item->list);
+ kfree(param_item);
+}
+EXPORT_SYMBOL_GPL(devlink_param_unregister);
+
+/**
+ * devlink_param_driverinit_value_get - get configuration parameter
+ * value for driver initializing
+ *
+ * @devlink: devlink
+ * @param_id: parameter ID
+ * @init_val: value of parameter in driverinit configuration mode
+ *
+ * This function should be used by the driver to get driverinit
+ * configuration for initialization after reload command.
+ */
+int devlink_param_driverinit_value_get(struct devlink *devlink, u32 param_id,
+ union devlink_param_value *init_val)
+{
+ struct devlink_param_item *param_item;
+
+ if (!devlink_reload_supported(devlink->ops))
+ return -EOPNOTSUPP;
+
+ param_item = devlink_param_find_by_id(&devlink->param_list, param_id);
+ if (!param_item)
+ return -EINVAL;
+
+ if (!param_item->driverinit_value_valid ||
+ !devlink_param_cmode_is_supported(param_item->param,
+ DEVLINK_PARAM_CMODE_DRIVERINIT))
+ return -EOPNOTSUPP;
+
+ if (param_item->param->type == DEVLINK_PARAM_TYPE_STRING)
+ strcpy(init_val->vstr, param_item->driverinit_value.vstr);
+ else
+ *init_val = param_item->driverinit_value;
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(devlink_param_driverinit_value_get);
+
+/**
+ * devlink_param_driverinit_value_set - set value of configuration
+ * parameter for driverinit
+ * configuration mode
+ *
+ * @devlink: devlink
+ * @param_id: parameter ID
+ * @init_val: value of parameter to set for driverinit configuration mode
+ *
+ * This function should be used by the driver to set driverinit
+ * configuration mode default value.
+ */
+int devlink_param_driverinit_value_set(struct devlink *devlink, u32 param_id,
+ union devlink_param_value init_val)
+{
+ struct devlink_param_item *param_item;
+
+ ASSERT_DEVLINK_NOT_REGISTERED(devlink);
+
+ param_item = devlink_param_find_by_id(&devlink->param_list, param_id);
+ if (!param_item)
+ return -EINVAL;
+
+ if (!devlink_param_cmode_is_supported(param_item->param,
+ DEVLINK_PARAM_CMODE_DRIVERINIT))
+ return -EOPNOTSUPP;
+
+ if (param_item->param->type == DEVLINK_PARAM_TYPE_STRING)
+ strcpy(param_item->driverinit_value.vstr, init_val.vstr);
+ else
+ param_item->driverinit_value = init_val;
+ param_item->driverinit_value_valid = true;
+ return 0;
+}
+EXPORT_SYMBOL_GPL(devlink_param_driverinit_value_set);
+
+/**
+ * devlink_param_value_changed - notify devlink on a parameter's value
+ * change. Should be called by the driver
+ * right after the change.
+ *
+ * @devlink: devlink
+ * @param_id: parameter ID
+ *
+ * This function should be used by the driver to notify devlink on value
+ * change, excluding driverinit configuration mode.
+ * For driverinit configuration mode driver should use the function
+ */
+void devlink_param_value_changed(struct devlink *devlink, u32 param_id)
+{
+ struct devlink_param_item *param_item;
+
+ param_item = devlink_param_find_by_id(&devlink->param_list, param_id);
+ WARN_ON(!param_item);
+
+ devlink_param_notify(devlink, 0, param_item, DEVLINK_CMD_PARAM_NEW);
+}
+EXPORT_SYMBOL_GPL(devlink_param_value_changed);
+
+/**
+ * devl_region_create - create a new address region
+ *
+ * @devlink: devlink
+ * @ops: region operations and name
+ * @region_max_snapshots: Maximum supported number of snapshots for region
+ * @region_size: size of region
+ */
+struct devlink_region *devl_region_create(struct devlink *devlink,
+ const struct devlink_region_ops *ops,
+ u32 region_max_snapshots,
+ u64 region_size)
+{
+ struct devlink_region *region;
+
+ devl_assert_locked(devlink);
+
+ if (WARN_ON(!ops) || WARN_ON(!ops->destructor))
+ return ERR_PTR(-EINVAL);
+
+ if (devlink_region_get_by_name(devlink, ops->name))
+ return ERR_PTR(-EEXIST);
+
+ region = kzalloc(sizeof(*region), GFP_KERNEL);
+ if (!region)
+ return ERR_PTR(-ENOMEM);
+
+ region->devlink = devlink;
+ region->max_snapshots = region_max_snapshots;
+ region->ops = ops;
+ region->size = region_size;
+ INIT_LIST_HEAD(&region->snapshot_list);
+ mutex_init(&region->snapshot_lock);
+ list_add_tail(&region->list, &devlink->region_list);
+ devlink_nl_region_notify(region, NULL, DEVLINK_CMD_REGION_NEW);
+
+ return region;
+}
+EXPORT_SYMBOL_GPL(devl_region_create);
+
+/**
+ * devlink_region_create - create a new address region
+ *
+ * @devlink: devlink
+ * @ops: region operations and name
+ * @region_max_snapshots: Maximum supported number of snapshots for region
+ * @region_size: size of region
+ *
+ * Context: Takes and release devlink->lock <mutex>.
+ */
+struct devlink_region *
+devlink_region_create(struct devlink *devlink,
+ const struct devlink_region_ops *ops,
+ u32 region_max_snapshots, u64 region_size)
+{
+ struct devlink_region *region;
+
+ devl_lock(devlink);
+ region = devl_region_create(devlink, ops, region_max_snapshots,
+ region_size);
+ devl_unlock(devlink);
+ return region;
+}
+EXPORT_SYMBOL_GPL(devlink_region_create);
+
+/**
+ * devlink_port_region_create - create a new address region for a port
+ *
+ * @port: devlink port
+ * @ops: region operations and name
+ * @region_max_snapshots: Maximum supported number of snapshots for region
+ * @region_size: size of region
+ *
+ * Context: Takes and release devlink->lock <mutex>.
+ */
+struct devlink_region *
+devlink_port_region_create(struct devlink_port *port,
+ const struct devlink_port_region_ops *ops,
+ u32 region_max_snapshots, u64 region_size)
+{
+ struct devlink *devlink = port->devlink;
+ struct devlink_region *region;
+ int err = 0;
+
+ ASSERT_DEVLINK_PORT_INITIALIZED(port);
+
+ if (WARN_ON(!ops) || WARN_ON(!ops->destructor))
+ return ERR_PTR(-EINVAL);
+
+ devl_lock(devlink);
+
+ if (devlink_port_region_get_by_name(port, ops->name)) {
+ err = -EEXIST;
+ goto unlock;
+ }
+
+ region = kzalloc(sizeof(*region), GFP_KERNEL);
+ if (!region) {
+ err = -ENOMEM;
+ goto unlock;
+ }
+
+ region->devlink = devlink;
+ region->port = port;
+ region->max_snapshots = region_max_snapshots;
+ region->port_ops = ops;
+ region->size = region_size;
+ INIT_LIST_HEAD(&region->snapshot_list);
+ mutex_init(&region->snapshot_lock);
+ list_add_tail(&region->list, &port->region_list);
+ devlink_nl_region_notify(region, NULL, DEVLINK_CMD_REGION_NEW);
+
+ devl_unlock(devlink);
+ return region;
+
+unlock:
+ devl_unlock(devlink);
+ return ERR_PTR(err);
+}
+EXPORT_SYMBOL_GPL(devlink_port_region_create);
+
+/**
+ * devl_region_destroy - destroy address region
+ *
+ * @region: devlink region to destroy
+ */
+void devl_region_destroy(struct devlink_region *region)
+{
+ struct devlink *devlink = region->devlink;
+ struct devlink_snapshot *snapshot, *ts;
+
+ devl_assert_locked(devlink);
+
+ /* Free all snapshots of region */
+ mutex_lock(&region->snapshot_lock);
+ list_for_each_entry_safe(snapshot, ts, &region->snapshot_list, list)
+ devlink_region_snapshot_del(region, snapshot);
+ mutex_unlock(&region->snapshot_lock);
+
+ list_del(&region->list);
+ mutex_destroy(&region->snapshot_lock);
+
+ devlink_nl_region_notify(region, NULL, DEVLINK_CMD_REGION_DEL);
+ kfree(region);
+}
+EXPORT_SYMBOL_GPL(devl_region_destroy);
+
+/**
+ * devlink_region_destroy - destroy address region
+ *
+ * @region: devlink region to destroy
+ *
+ * Context: Takes and release devlink->lock <mutex>.
+ */
+void devlink_region_destroy(struct devlink_region *region)
+{
+ struct devlink *devlink = region->devlink;
+
+ devl_lock(devlink);
+ devl_region_destroy(region);
+ devl_unlock(devlink);
+}
+EXPORT_SYMBOL_GPL(devlink_region_destroy);
+
+/**
+ * devlink_region_snapshot_id_get - get snapshot ID
+ *
+ * This callback should be called when adding a new snapshot,
+ * Driver should use the same id for multiple snapshots taken
+ * on multiple regions at the same time/by the same trigger.
+ *
+ * The caller of this function must use devlink_region_snapshot_id_put
+ * when finished creating regions using this id.
+ *
+ * Returns zero on success, or a negative error code on failure.
+ *
+ * @devlink: devlink
+ * @id: storage to return id
+ */
+int devlink_region_snapshot_id_get(struct devlink *devlink, u32 *id)
+{
+ return __devlink_region_snapshot_id_get(devlink, id);
+}
+EXPORT_SYMBOL_GPL(devlink_region_snapshot_id_get);
+
+/**
+ * devlink_region_snapshot_id_put - put snapshot ID reference
+ *
+ * This should be called by a driver after finishing creating snapshots
+ * with an id. Doing so ensures that the ID can later be released in the
+ * event that all snapshots using it have been destroyed.
+ *
+ * @devlink: devlink
+ * @id: id to release reference on
+ */
+void devlink_region_snapshot_id_put(struct devlink *devlink, u32 id)
+{
+ __devlink_snapshot_id_decrement(devlink, id);
+}
+EXPORT_SYMBOL_GPL(devlink_region_snapshot_id_put);
+
+/**
+ * devlink_region_snapshot_create - create a new snapshot
+ * This will add a new snapshot of a region. The snapshot
+ * will be stored on the region struct and can be accessed
+ * from devlink. This is useful for future analyses of snapshots.
+ * Multiple snapshots can be created on a region.
+ * The @snapshot_id should be obtained using the getter function.
+ *
+ * @region: devlink region of the snapshot
+ * @data: snapshot data
+ * @snapshot_id: snapshot id to be created
+ */
+int devlink_region_snapshot_create(struct devlink_region *region,
+ u8 *data, u32 snapshot_id)
+{
+ int err;
+
+ mutex_lock(&region->snapshot_lock);
+ err = __devlink_region_snapshot_create(region, data, snapshot_id);
+ mutex_unlock(&region->snapshot_lock);
+ return err;
+}
+EXPORT_SYMBOL_GPL(devlink_region_snapshot_create);
+
+#define DEVLINK_TRAP(_id, _type) \
+ { \
+ .type = DEVLINK_TRAP_TYPE_##_type, \
+ .id = DEVLINK_TRAP_GENERIC_ID_##_id, \
+ .name = DEVLINK_TRAP_GENERIC_NAME_##_id, \
+ }
+
+static const struct devlink_trap devlink_trap_generic[] = {
+ DEVLINK_TRAP(SMAC_MC, DROP),
+ DEVLINK_TRAP(VLAN_TAG_MISMATCH, DROP),
+ DEVLINK_TRAP(INGRESS_VLAN_FILTER, DROP),
+ DEVLINK_TRAP(INGRESS_STP_FILTER, DROP),
+ DEVLINK_TRAP(EMPTY_TX_LIST, DROP),
+ DEVLINK_TRAP(PORT_LOOPBACK_FILTER, DROP),
+ DEVLINK_TRAP(BLACKHOLE_ROUTE, DROP),
+ DEVLINK_TRAP(TTL_ERROR, EXCEPTION),
+ DEVLINK_TRAP(TAIL_DROP, DROP),
+ DEVLINK_TRAP(NON_IP_PACKET, DROP),
+ DEVLINK_TRAP(UC_DIP_MC_DMAC, DROP),
+ DEVLINK_TRAP(DIP_LB, DROP),
+ DEVLINK_TRAP(SIP_MC, DROP),
+ DEVLINK_TRAP(SIP_LB, DROP),
+ DEVLINK_TRAP(CORRUPTED_IP_HDR, DROP),
+ DEVLINK_TRAP(IPV4_SIP_BC, DROP),
+ DEVLINK_TRAP(IPV6_MC_DIP_RESERVED_SCOPE, DROP),
+ DEVLINK_TRAP(IPV6_MC_DIP_INTERFACE_LOCAL_SCOPE, DROP),
+ DEVLINK_TRAP(MTU_ERROR, EXCEPTION),
+ DEVLINK_TRAP(UNRESOLVED_NEIGH, EXCEPTION),
+ DEVLINK_TRAP(RPF, EXCEPTION),
+ DEVLINK_TRAP(REJECT_ROUTE, EXCEPTION),
+ DEVLINK_TRAP(IPV4_LPM_UNICAST_MISS, EXCEPTION),
+ DEVLINK_TRAP(IPV6_LPM_UNICAST_MISS, EXCEPTION),
+ DEVLINK_TRAP(NON_ROUTABLE, DROP),
+ DEVLINK_TRAP(DECAP_ERROR, EXCEPTION),
+ DEVLINK_TRAP(OVERLAY_SMAC_MC, DROP),
+ DEVLINK_TRAP(INGRESS_FLOW_ACTION_DROP, DROP),
+ DEVLINK_TRAP(EGRESS_FLOW_ACTION_DROP, DROP),
+ DEVLINK_TRAP(STP, CONTROL),
+ DEVLINK_TRAP(LACP, CONTROL),
+ DEVLINK_TRAP(LLDP, CONTROL),
+ DEVLINK_TRAP(IGMP_QUERY, CONTROL),
+ DEVLINK_TRAP(IGMP_V1_REPORT, CONTROL),
+ DEVLINK_TRAP(IGMP_V2_REPORT, CONTROL),
+ DEVLINK_TRAP(IGMP_V3_REPORT, CONTROL),
+ DEVLINK_TRAP(IGMP_V2_LEAVE, CONTROL),
+ DEVLINK_TRAP(MLD_QUERY, CONTROL),
+ DEVLINK_TRAP(MLD_V1_REPORT, CONTROL),
+ DEVLINK_TRAP(MLD_V2_REPORT, CONTROL),
+ DEVLINK_TRAP(MLD_V1_DONE, CONTROL),
+ DEVLINK_TRAP(IPV4_DHCP, CONTROL),
+ DEVLINK_TRAP(IPV6_DHCP, CONTROL),
+ DEVLINK_TRAP(ARP_REQUEST, CONTROL),
+ DEVLINK_TRAP(ARP_RESPONSE, CONTROL),
+ DEVLINK_TRAP(ARP_OVERLAY, CONTROL),
+ DEVLINK_TRAP(IPV6_NEIGH_SOLICIT, CONTROL),
+ DEVLINK_TRAP(IPV6_NEIGH_ADVERT, CONTROL),
+ DEVLINK_TRAP(IPV4_BFD, CONTROL),
+ DEVLINK_TRAP(IPV6_BFD, CONTROL),
+ DEVLINK_TRAP(IPV4_OSPF, CONTROL),
+ DEVLINK_TRAP(IPV6_OSPF, CONTROL),
+ DEVLINK_TRAP(IPV4_BGP, CONTROL),
+ DEVLINK_TRAP(IPV6_BGP, CONTROL),
+ DEVLINK_TRAP(IPV4_VRRP, CONTROL),
+ DEVLINK_TRAP(IPV6_VRRP, CONTROL),
+ DEVLINK_TRAP(IPV4_PIM, CONTROL),
+ DEVLINK_TRAP(IPV6_PIM, CONTROL),
+ DEVLINK_TRAP(UC_LB, CONTROL),
+ DEVLINK_TRAP(LOCAL_ROUTE, CONTROL),
+ DEVLINK_TRAP(EXTERNAL_ROUTE, CONTROL),
+ DEVLINK_TRAP(IPV6_UC_DIP_LINK_LOCAL_SCOPE, CONTROL),
+ DEVLINK_TRAP(IPV6_DIP_ALL_NODES, CONTROL),
+ DEVLINK_TRAP(IPV6_DIP_ALL_ROUTERS, CONTROL),
+ DEVLINK_TRAP(IPV6_ROUTER_SOLICIT, CONTROL),
+ DEVLINK_TRAP(IPV6_ROUTER_ADVERT, CONTROL),
+ DEVLINK_TRAP(IPV6_REDIRECT, CONTROL),
+ DEVLINK_TRAP(IPV4_ROUTER_ALERT, CONTROL),
+ DEVLINK_TRAP(IPV6_ROUTER_ALERT, CONTROL),
+ DEVLINK_TRAP(PTP_EVENT, CONTROL),
+ DEVLINK_TRAP(PTP_GENERAL, CONTROL),
+ DEVLINK_TRAP(FLOW_ACTION_SAMPLE, CONTROL),
+ DEVLINK_TRAP(FLOW_ACTION_TRAP, CONTROL),
+ DEVLINK_TRAP(EARLY_DROP, DROP),
+ DEVLINK_TRAP(VXLAN_PARSING, DROP),
+ DEVLINK_TRAP(LLC_SNAP_PARSING, DROP),
+ DEVLINK_TRAP(VLAN_PARSING, DROP),
+ DEVLINK_TRAP(PPPOE_PPP_PARSING, DROP),
+ DEVLINK_TRAP(MPLS_PARSING, DROP),
+ DEVLINK_TRAP(ARP_PARSING, DROP),
+ DEVLINK_TRAP(IP_1_PARSING, DROP),
+ DEVLINK_TRAP(IP_N_PARSING, DROP),
+ DEVLINK_TRAP(GRE_PARSING, DROP),
+ DEVLINK_TRAP(UDP_PARSING, DROP),
+ DEVLINK_TRAP(TCP_PARSING, DROP),
+ DEVLINK_TRAP(IPSEC_PARSING, DROP),
+ DEVLINK_TRAP(SCTP_PARSING, DROP),
+ DEVLINK_TRAP(DCCP_PARSING, DROP),
+ DEVLINK_TRAP(GTP_PARSING, DROP),
+ DEVLINK_TRAP(ESP_PARSING, DROP),
+ DEVLINK_TRAP(BLACKHOLE_NEXTHOP, DROP),
+ DEVLINK_TRAP(DMAC_FILTER, DROP),
+};
+
+#define DEVLINK_TRAP_GROUP(_id) \
+ { \
+ .id = DEVLINK_TRAP_GROUP_GENERIC_ID_##_id, \
+ .name = DEVLINK_TRAP_GROUP_GENERIC_NAME_##_id, \
+ }
+
+static const struct devlink_trap_group devlink_trap_group_generic[] = {
+ DEVLINK_TRAP_GROUP(L2_DROPS),
+ DEVLINK_TRAP_GROUP(L3_DROPS),
+ DEVLINK_TRAP_GROUP(L3_EXCEPTIONS),
+ DEVLINK_TRAP_GROUP(BUFFER_DROPS),
+ DEVLINK_TRAP_GROUP(TUNNEL_DROPS),
+ DEVLINK_TRAP_GROUP(ACL_DROPS),
+ DEVLINK_TRAP_GROUP(STP),
+ DEVLINK_TRAP_GROUP(LACP),
+ DEVLINK_TRAP_GROUP(LLDP),
+ DEVLINK_TRAP_GROUP(MC_SNOOPING),
+ DEVLINK_TRAP_GROUP(DHCP),
+ DEVLINK_TRAP_GROUP(NEIGH_DISCOVERY),
+ DEVLINK_TRAP_GROUP(BFD),
+ DEVLINK_TRAP_GROUP(OSPF),
+ DEVLINK_TRAP_GROUP(BGP),
+ DEVLINK_TRAP_GROUP(VRRP),
+ DEVLINK_TRAP_GROUP(PIM),
+ DEVLINK_TRAP_GROUP(UC_LB),
+ DEVLINK_TRAP_GROUP(LOCAL_DELIVERY),
+ DEVLINK_TRAP_GROUP(EXTERNAL_DELIVERY),
+ DEVLINK_TRAP_GROUP(IPV6),
+ DEVLINK_TRAP_GROUP(PTP_EVENT),
+ DEVLINK_TRAP_GROUP(PTP_GENERAL),
+ DEVLINK_TRAP_GROUP(ACL_SAMPLE),
+ DEVLINK_TRAP_GROUP(ACL_TRAP),
+ DEVLINK_TRAP_GROUP(PARSER_ERROR_DROPS),
+};
+
+static int devlink_trap_generic_verify(const struct devlink_trap *trap)
+{
+ if (trap->id > DEVLINK_TRAP_GENERIC_ID_MAX)
+ return -EINVAL;
+
+ if (strcmp(trap->name, devlink_trap_generic[trap->id].name))
+ return -EINVAL;
+
+ if (trap->type != devlink_trap_generic[trap->id].type)
+ return -EINVAL;
+
+ return 0;
+}
+
+static int devlink_trap_driver_verify(const struct devlink_trap *trap)
+{
+ int i;
+
+ if (trap->id <= DEVLINK_TRAP_GENERIC_ID_MAX)
+ return -EINVAL;
+
+ for (i = 0; i < ARRAY_SIZE(devlink_trap_generic); i++) {
+ if (!strcmp(trap->name, devlink_trap_generic[i].name))
+ return -EEXIST;
+ }
+
+ return 0;
+}
+
+static int devlink_trap_verify(const struct devlink_trap *trap)
+{
+ if (!trap || !trap->name)
+ return -EINVAL;
+
+ if (trap->generic)
+ return devlink_trap_generic_verify(trap);
+ else
+ return devlink_trap_driver_verify(trap);
+}
+
+static int
+devlink_trap_group_generic_verify(const struct devlink_trap_group *group)
+{
+ if (group->id > DEVLINK_TRAP_GROUP_GENERIC_ID_MAX)
+ return -EINVAL;
+
+ if (strcmp(group->name, devlink_trap_group_generic[group->id].name))
+ return -EINVAL;
+
+ return 0;
+}
+
+static int
+devlink_trap_group_driver_verify(const struct devlink_trap_group *group)
+{
+ int i;
+
+ if (group->id <= DEVLINK_TRAP_GROUP_GENERIC_ID_MAX)
+ return -EINVAL;
+
+ for (i = 0; i < ARRAY_SIZE(devlink_trap_group_generic); i++) {
+ if (!strcmp(group->name, devlink_trap_group_generic[i].name))
+ return -EEXIST;
+ }
+
+ return 0;
+}
+
+static int devlink_trap_group_verify(const struct devlink_trap_group *group)
+{
+ if (group->generic)
+ return devlink_trap_group_generic_verify(group);
+ else
+ return devlink_trap_group_driver_verify(group);
+}
+
+static void
+devlink_trap_group_notify(struct devlink *devlink,
+ const struct devlink_trap_group_item *group_item,
+ enum devlink_command cmd)
+{
+ struct sk_buff *msg;
+ int err;
+
+ WARN_ON_ONCE(cmd != DEVLINK_CMD_TRAP_GROUP_NEW &&
+ cmd != DEVLINK_CMD_TRAP_GROUP_DEL);
+ if (!xa_get_mark(&devlinks, devlink->index, DEVLINK_REGISTERED))
+ return;
+
+ msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
+ if (!msg)
+ return;
+
+ err = devlink_nl_trap_group_fill(msg, devlink, group_item, cmd, 0, 0,
+ 0);
+ if (err) {
+ nlmsg_free(msg);
+ return;
+ }
+
+ genlmsg_multicast_netns(&devlink_nl_family, devlink_net(devlink),
+ msg, 0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL);
+}
+
+static int
+devlink_trap_item_group_link(struct devlink *devlink,
+ struct devlink_trap_item *trap_item)
+{
+ u16 group_id = trap_item->trap->init_group_id;
+ struct devlink_trap_group_item *group_item;
+
+ group_item = devlink_trap_group_item_lookup_by_id(devlink, group_id);
+ if (WARN_ON_ONCE(!group_item))
+ return -EINVAL;
+
+ trap_item->group_item = group_item;
+
+ return 0;
+}
+
+static void devlink_trap_notify(struct devlink *devlink,
+ const struct devlink_trap_item *trap_item,
+ enum devlink_command cmd)
+{
+ struct sk_buff *msg;
+ int err;
+
+ WARN_ON_ONCE(cmd != DEVLINK_CMD_TRAP_NEW &&
+ cmd != DEVLINK_CMD_TRAP_DEL);
+ if (!xa_get_mark(&devlinks, devlink->index, DEVLINK_REGISTERED))
+ return;
+
+ msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
+ if (!msg)
+ return;
+
+ err = devlink_nl_trap_fill(msg, devlink, trap_item, cmd, 0, 0, 0);
+ if (err) {
+ nlmsg_free(msg);
+ return;
+ }
+
+ genlmsg_multicast_netns(&devlink_nl_family, devlink_net(devlink),
+ msg, 0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL);
+}
+
+static int
+devlink_trap_register(struct devlink *devlink,
+ const struct devlink_trap *trap, void *priv)
+{
+ struct devlink_trap_item *trap_item;
+ int err;
+
+ if (devlink_trap_item_lookup(devlink, trap->name))
+ return -EEXIST;
+
+ trap_item = kzalloc(sizeof(*trap_item), GFP_KERNEL);
+ if (!trap_item)
+ return -ENOMEM;
+
+ trap_item->stats = netdev_alloc_pcpu_stats(struct devlink_stats);
+ if (!trap_item->stats) {
+ err = -ENOMEM;
+ goto err_stats_alloc;
+ }
+
+ trap_item->trap = trap;
+ trap_item->action = trap->init_action;
+ trap_item->priv = priv;
+
+ err = devlink_trap_item_group_link(devlink, trap_item);
+ if (err)
+ goto err_group_link;
+
+ err = devlink->ops->trap_init(devlink, trap, trap_item);
+ if (err)
+ goto err_trap_init;
+
+ list_add_tail(&trap_item->list, &devlink->trap_list);
+ devlink_trap_notify(devlink, trap_item, DEVLINK_CMD_TRAP_NEW);
+
+ return 0;
+
+err_trap_init:
+err_group_link:
+ free_percpu(trap_item->stats);
+err_stats_alloc:
+ kfree(trap_item);
+ return err;
+}
+
+static void devlink_trap_unregister(struct devlink *devlink,
+ const struct devlink_trap *trap)
+{
+ struct devlink_trap_item *trap_item;
+
+ trap_item = devlink_trap_item_lookup(devlink, trap->name);
+ if (WARN_ON_ONCE(!trap_item))
+ return;
+
+ devlink_trap_notify(devlink, trap_item, DEVLINK_CMD_TRAP_DEL);
+ list_del(&trap_item->list);
+ if (devlink->ops->trap_fini)
+ devlink->ops->trap_fini(devlink, trap, trap_item);
+ free_percpu(trap_item->stats);
+ kfree(trap_item);
+}
+
+static void devlink_trap_disable(struct devlink *devlink,
+ const struct devlink_trap *trap)
+{
+ struct devlink_trap_item *trap_item;
+
+ trap_item = devlink_trap_item_lookup(devlink, trap->name);
+ if (WARN_ON_ONCE(!trap_item))
+ return;
+
+ devlink->ops->trap_action_set(devlink, trap, DEVLINK_TRAP_ACTION_DROP,
+ NULL);
+ trap_item->action = DEVLINK_TRAP_ACTION_DROP;
+}
+
+/**
+ * devl_traps_register - Register packet traps with devlink.
+ * @devlink: devlink.
+ * @traps: Packet traps.
+ * @traps_count: Count of provided packet traps.
+ * @priv: Driver private information.
+ *
+ * Return: Non-zero value on failure.
+ */
+int devl_traps_register(struct devlink *devlink,
+ const struct devlink_trap *traps,
+ size_t traps_count, void *priv)
+{
+ int i, err;
+
+ if (!devlink->ops->trap_init || !devlink->ops->trap_action_set)
+ return -EINVAL;
+
+ devl_assert_locked(devlink);
+ for (i = 0; i < traps_count; i++) {
+ const struct devlink_trap *trap = &traps[i];
+
+ err = devlink_trap_verify(trap);
+ if (err)
+ goto err_trap_verify;
+
+ err = devlink_trap_register(devlink, trap, priv);
+ if (err)
+ goto err_trap_register;
+ }
+
+ return 0;
+
+err_trap_register:
+err_trap_verify:
+ for (i--; i >= 0; i--)
+ devlink_trap_unregister(devlink, &traps[i]);
+ return err;
+}
+EXPORT_SYMBOL_GPL(devl_traps_register);
+
+/**
+ * devlink_traps_register - Register packet traps with devlink.
+ * @devlink: devlink.
+ * @traps: Packet traps.
+ * @traps_count: Count of provided packet traps.
+ * @priv: Driver private information.
+ *
+ * Context: Takes and release devlink->lock <mutex>.
+ *
+ * Return: Non-zero value on failure.
+ */
+int devlink_traps_register(struct devlink *devlink,
+ const struct devlink_trap *traps,
+ size_t traps_count, void *priv)
+{
+ int err;
+
+ devl_lock(devlink);
+ err = devl_traps_register(devlink, traps, traps_count, priv);
+ devl_unlock(devlink);
+ return err;
+}
+EXPORT_SYMBOL_GPL(devlink_traps_register);
+
+/**
+ * devl_traps_unregister - Unregister packet traps from devlink.
+ * @devlink: devlink.
+ * @traps: Packet traps.
+ * @traps_count: Count of provided packet traps.
+ */
+void devl_traps_unregister(struct devlink *devlink,
+ const struct devlink_trap *traps,
+ size_t traps_count)
+{
+ int i;
+
+ devl_assert_locked(devlink);
+ /* Make sure we do not have any packets in-flight while unregistering
+ * traps by disabling all of them and waiting for a grace period.
+ */
+ for (i = traps_count - 1; i >= 0; i--)
+ devlink_trap_disable(devlink, &traps[i]);
+ synchronize_rcu();
+ for (i = traps_count - 1; i >= 0; i--)
+ devlink_trap_unregister(devlink, &traps[i]);
+}
+EXPORT_SYMBOL_GPL(devl_traps_unregister);
+
+/**
+ * devlink_traps_unregister - Unregister packet traps from devlink.
+ * @devlink: devlink.
+ * @traps: Packet traps.
+ * @traps_count: Count of provided packet traps.
+ *
+ * Context: Takes and release devlink->lock <mutex>.
+ */
+void devlink_traps_unregister(struct devlink *devlink,
+ const struct devlink_trap *traps,
+ size_t traps_count)
+{
+ devl_lock(devlink);
+ devl_traps_unregister(devlink, traps, traps_count);
+ devl_unlock(devlink);
+}
+EXPORT_SYMBOL_GPL(devlink_traps_unregister);
+
+static void
+devlink_trap_stats_update(struct devlink_stats __percpu *trap_stats,
+ size_t skb_len)
+{
+ struct devlink_stats *stats;
+
+ stats = this_cpu_ptr(trap_stats);
+ u64_stats_update_begin(&stats->syncp);
+ u64_stats_add(&stats->rx_bytes, skb_len);
+ u64_stats_inc(&stats->rx_packets);
+ u64_stats_update_end(&stats->syncp);
+}
+
+static void
+devlink_trap_report_metadata_set(struct devlink_trap_metadata *metadata,
+ const struct devlink_trap_item *trap_item,
+ struct devlink_port *in_devlink_port,
+ const struct flow_action_cookie *fa_cookie)
+{
+ metadata->trap_name = trap_item->trap->name;
+ metadata->trap_group_name = trap_item->group_item->group->name;
+ metadata->fa_cookie = fa_cookie;
+ metadata->trap_type = trap_item->trap->type;
+
+ spin_lock(&in_devlink_port->type_lock);
+ if (in_devlink_port->type == DEVLINK_PORT_TYPE_ETH)
+ metadata->input_dev = in_devlink_port->type_dev;
+ spin_unlock(&in_devlink_port->type_lock);
+}
+
+/**
+ * devlink_trap_report - Report trapped packet to drop monitor.
+ * @devlink: devlink.
+ * @skb: Trapped packet.
+ * @trap_ctx: Trap context.
+ * @in_devlink_port: Input devlink port.
+ * @fa_cookie: Flow action cookie. Could be NULL.
+ */
+void devlink_trap_report(struct devlink *devlink, struct sk_buff *skb,
+ void *trap_ctx, struct devlink_port *in_devlink_port,
+ const struct flow_action_cookie *fa_cookie)
+
+{
+ struct devlink_trap_item *trap_item = trap_ctx;
+
+ devlink_trap_stats_update(trap_item->stats, skb->len);
+ devlink_trap_stats_update(trap_item->group_item->stats, skb->len);
+
+ if (trace_devlink_trap_report_enabled()) {
+ struct devlink_trap_metadata metadata = {};
+
+ devlink_trap_report_metadata_set(&metadata, trap_item,
+ in_devlink_port, fa_cookie);
+ trace_devlink_trap_report(devlink, skb, &metadata);
+ }
+}
+EXPORT_SYMBOL_GPL(devlink_trap_report);
+
+/**
+ * devlink_trap_ctx_priv - Trap context to driver private information.
+ * @trap_ctx: Trap context.
+ *
+ * Return: Driver private information passed during registration.
+ */
+void *devlink_trap_ctx_priv(void *trap_ctx)
+{
+ struct devlink_trap_item *trap_item = trap_ctx;
+
+ return trap_item->priv;
+}
+EXPORT_SYMBOL_GPL(devlink_trap_ctx_priv);
+
+static int
+devlink_trap_group_item_policer_link(struct devlink *devlink,
+ struct devlink_trap_group_item *group_item)
+{
+ u32 policer_id = group_item->group->init_policer_id;
+ struct devlink_trap_policer_item *policer_item;
+
+ if (policer_id == 0)
+ return 0;
+
+ policer_item = devlink_trap_policer_item_lookup(devlink, policer_id);
+ if (WARN_ON_ONCE(!policer_item))
+ return -EINVAL;
+
+ group_item->policer_item = policer_item;
+
+ return 0;
+}
+
+static int
+devlink_trap_group_register(struct devlink *devlink,
+ const struct devlink_trap_group *group)
+{
+ struct devlink_trap_group_item *group_item;
+ int err;
+
+ if (devlink_trap_group_item_lookup(devlink, group->name))
+ return -EEXIST;
+
+ group_item = kzalloc(sizeof(*group_item), GFP_KERNEL);
+ if (!group_item)
+ return -ENOMEM;
+
+ group_item->stats = netdev_alloc_pcpu_stats(struct devlink_stats);
+ if (!group_item->stats) {
+ err = -ENOMEM;
+ goto err_stats_alloc;
+ }
+
+ group_item->group = group;
+
+ err = devlink_trap_group_item_policer_link(devlink, group_item);
+ if (err)
+ goto err_policer_link;
+
+ if (devlink->ops->trap_group_init) {
+ err = devlink->ops->trap_group_init(devlink, group);
+ if (err)
+ goto err_group_init;
+ }
+
+ list_add_tail(&group_item->list, &devlink->trap_group_list);
+ devlink_trap_group_notify(devlink, group_item,
+ DEVLINK_CMD_TRAP_GROUP_NEW);
+
+ return 0;
+
+err_group_init:
+err_policer_link:
+ free_percpu(group_item->stats);
+err_stats_alloc:
+ kfree(group_item);
+ return err;
+}
+
+static void
+devlink_trap_group_unregister(struct devlink *devlink,
+ const struct devlink_trap_group *group)
+{
+ struct devlink_trap_group_item *group_item;
+
+ group_item = devlink_trap_group_item_lookup(devlink, group->name);
+ if (WARN_ON_ONCE(!group_item))
+ return;
+
+ devlink_trap_group_notify(devlink, group_item,
+ DEVLINK_CMD_TRAP_GROUP_DEL);
+ list_del(&group_item->list);
+ free_percpu(group_item->stats);
+ kfree(group_item);
+}
+
+/**
+ * devl_trap_groups_register - Register packet trap groups with devlink.
+ * @devlink: devlink.
+ * @groups: Packet trap groups.
+ * @groups_count: Count of provided packet trap groups.
+ *
+ * Return: Non-zero value on failure.
+ */
+int devl_trap_groups_register(struct devlink *devlink,
+ const struct devlink_trap_group *groups,
+ size_t groups_count)
+{
+ int i, err;
+
+ devl_assert_locked(devlink);
+ for (i = 0; i < groups_count; i++) {
+ const struct devlink_trap_group *group = &groups[i];
+
+ err = devlink_trap_group_verify(group);
+ if (err)
+ goto err_trap_group_verify;
+
+ err = devlink_trap_group_register(devlink, group);
+ if (err)
+ goto err_trap_group_register;
+ }
+
+ return 0;
+
+err_trap_group_register:
+err_trap_group_verify:
+ for (i--; i >= 0; i--)
+ devlink_trap_group_unregister(devlink, &groups[i]);
+ return err;
+}
+EXPORT_SYMBOL_GPL(devl_trap_groups_register);
+
+/**
+ * devlink_trap_groups_register - Register packet trap groups with devlink.
+ * @devlink: devlink.
+ * @groups: Packet trap groups.
+ * @groups_count: Count of provided packet trap groups.
+ *
+ * Context: Takes and release devlink->lock <mutex>.
+ *
+ * Return: Non-zero value on failure.
+ */
+int devlink_trap_groups_register(struct devlink *devlink,
+ const struct devlink_trap_group *groups,
+ size_t groups_count)
+{
+ int err;
+
+ devl_lock(devlink);
+ err = devl_trap_groups_register(devlink, groups, groups_count);
+ devl_unlock(devlink);
+ return err;
+}
+EXPORT_SYMBOL_GPL(devlink_trap_groups_register);
+
+/**
+ * devl_trap_groups_unregister - Unregister packet trap groups from devlink.
+ * @devlink: devlink.
+ * @groups: Packet trap groups.
+ * @groups_count: Count of provided packet trap groups.
+ */
+void devl_trap_groups_unregister(struct devlink *devlink,
+ const struct devlink_trap_group *groups,
+ size_t groups_count)
+{
+ int i;
+
+ devl_assert_locked(devlink);
+ for (i = groups_count - 1; i >= 0; i--)
+ devlink_trap_group_unregister(devlink, &groups[i]);
+}
+EXPORT_SYMBOL_GPL(devl_trap_groups_unregister);
+
+/**
+ * devlink_trap_groups_unregister - Unregister packet trap groups from devlink.
+ * @devlink: devlink.
+ * @groups: Packet trap groups.
+ * @groups_count: Count of provided packet trap groups.
+ *
+ * Context: Takes and release devlink->lock <mutex>.
+ */
+void devlink_trap_groups_unregister(struct devlink *devlink,
+ const struct devlink_trap_group *groups,
+ size_t groups_count)
+{
+ devl_lock(devlink);
+ devl_trap_groups_unregister(devlink, groups, groups_count);
+ devl_unlock(devlink);
+}
+EXPORT_SYMBOL_GPL(devlink_trap_groups_unregister);
+
+static void
+devlink_trap_policer_notify(struct devlink *devlink,
+ const struct devlink_trap_policer_item *policer_item,
+ enum devlink_command cmd)
+{
+ struct sk_buff *msg;
+ int err;
+
+ WARN_ON_ONCE(cmd != DEVLINK_CMD_TRAP_POLICER_NEW &&
+ cmd != DEVLINK_CMD_TRAP_POLICER_DEL);
+ if (!xa_get_mark(&devlinks, devlink->index, DEVLINK_REGISTERED))
+ return;
+
+ msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
+ if (!msg)
+ return;
+
+ err = devlink_nl_trap_policer_fill(msg, devlink, policer_item, cmd, 0,
+ 0, 0);
+ if (err) {
+ nlmsg_free(msg);
+ return;
+ }
+
+ genlmsg_multicast_netns(&devlink_nl_family, devlink_net(devlink),
+ msg, 0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL);
+}
+
+static int
+devlink_trap_policer_register(struct devlink *devlink,
+ const struct devlink_trap_policer *policer)
+{
+ struct devlink_trap_policer_item *policer_item;
+ int err;
+
+ if (devlink_trap_policer_item_lookup(devlink, policer->id))
+ return -EEXIST;
+
+ policer_item = kzalloc(sizeof(*policer_item), GFP_KERNEL);
+ if (!policer_item)
+ return -ENOMEM;
+
+ policer_item->policer = policer;
+ policer_item->rate = policer->init_rate;
+ policer_item->burst = policer->init_burst;
+
+ if (devlink->ops->trap_policer_init) {
+ err = devlink->ops->trap_policer_init(devlink, policer);
+ if (err)
+ goto err_policer_init;
+ }
+
+ list_add_tail(&policer_item->list, &devlink->trap_policer_list);
+ devlink_trap_policer_notify(devlink, policer_item,
+ DEVLINK_CMD_TRAP_POLICER_NEW);
+
+ return 0;
+
+err_policer_init:
+ kfree(policer_item);
+ return err;
+}
+
+static void
+devlink_trap_policer_unregister(struct devlink *devlink,
+ const struct devlink_trap_policer *policer)
+{
+ struct devlink_trap_policer_item *policer_item;
+
+ policer_item = devlink_trap_policer_item_lookup(devlink, policer->id);
+ if (WARN_ON_ONCE(!policer_item))
+ return;
+
+ devlink_trap_policer_notify(devlink, policer_item,
+ DEVLINK_CMD_TRAP_POLICER_DEL);
+ list_del(&policer_item->list);
+ if (devlink->ops->trap_policer_fini)
+ devlink->ops->trap_policer_fini(devlink, policer);
+ kfree(policer_item);
+}
+
+/**
+ * devl_trap_policers_register - Register packet trap policers with devlink.
+ * @devlink: devlink.
+ * @policers: Packet trap policers.
+ * @policers_count: Count of provided packet trap policers.
+ *
+ * Return: Non-zero value on failure.
+ */
+int
+devl_trap_policers_register(struct devlink *devlink,
+ const struct devlink_trap_policer *policers,
+ size_t policers_count)
+{
+ int i, err;
+
+ devl_assert_locked(devlink);
+ for (i = 0; i < policers_count; i++) {
+ const struct devlink_trap_policer *policer = &policers[i];
+
+ if (WARN_ON(policer->id == 0 ||
+ policer->max_rate < policer->min_rate ||
+ policer->max_burst < policer->min_burst)) {
+ err = -EINVAL;
+ goto err_trap_policer_verify;
+ }
+
+ err = devlink_trap_policer_register(devlink, policer);
+ if (err)
+ goto err_trap_policer_register;
+ }
+ return 0;
+
+err_trap_policer_register:
+err_trap_policer_verify:
+ for (i--; i >= 0; i--)
+ devlink_trap_policer_unregister(devlink, &policers[i]);
+ return err;
+}
+EXPORT_SYMBOL_GPL(devl_trap_policers_register);
+
+/**
+ * devl_trap_policers_unregister - Unregister packet trap policers from devlink.
+ * @devlink: devlink.
+ * @policers: Packet trap policers.
+ * @policers_count: Count of provided packet trap policers.
+ */
+void
+devl_trap_policers_unregister(struct devlink *devlink,
+ const struct devlink_trap_policer *policers,
+ size_t policers_count)
+{
+ int i;
+
+ devl_assert_locked(devlink);
+ for (i = policers_count - 1; i >= 0; i--)
+ devlink_trap_policer_unregister(devlink, &policers[i]);
+}
+EXPORT_SYMBOL_GPL(devl_trap_policers_unregister);
+
+static void __devlink_compat_running_version(struct devlink *devlink,
+ char *buf, size_t len)
+{
+ struct devlink_info_req req = {};
+ const struct nlattr *nlattr;
+ struct sk_buff *msg;
+ int rem, err;
+
+ msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
+ if (!msg)
+ return;
+
+ req.msg = msg;
+ err = devlink->ops->info_get(devlink, &req, NULL);
+ if (err)
+ goto free_msg;
+
+ nla_for_each_attr(nlattr, (void *)msg->data, msg->len, rem) {
+ const struct nlattr *kv;
+ int rem_kv;
+
+ if (nla_type(nlattr) != DEVLINK_ATTR_INFO_VERSION_RUNNING)
+ continue;
+
+ nla_for_each_nested(kv, nlattr, rem_kv) {
+ if (nla_type(kv) != DEVLINK_ATTR_INFO_VERSION_VALUE)
+ continue;
+
+ strlcat(buf, nla_data(kv), len);
+ strlcat(buf, " ", len);
+ }
+ }
+free_msg:
+ nlmsg_free(msg);
+}
+
+static struct devlink_port *netdev_to_devlink_port(struct net_device *dev)
+{
+ if (!dev->netdev_ops->ndo_get_devlink_port)
+ return NULL;
+
+ return dev->netdev_ops->ndo_get_devlink_port(dev);
+}
+
+void devlink_compat_running_version(struct devlink *devlink,
+ char *buf, size_t len)
+{
+ if (!devlink->ops->info_get)
+ return;
+
+ devl_lock(devlink);
+ __devlink_compat_running_version(devlink, buf, len);
+ devl_unlock(devlink);
+}
+
+int devlink_compat_flash_update(struct devlink *devlink, const char *file_name)
+{
+ struct devlink_flash_update_params params = {};
+ int ret;
+
+ if (!devlink->ops->flash_update)
+ return -EOPNOTSUPP;
+
+ ret = request_firmware(&params.fw, file_name, devlink->dev);
+ if (ret)
+ return ret;
+
+ devl_lock(devlink);
+ devlink_flash_update_begin_notify(devlink);
+ ret = devlink->ops->flash_update(devlink, &params, NULL);
+ devlink_flash_update_end_notify(devlink);
+ devl_unlock(devlink);
+
+ release_firmware(params.fw);
+
+ return ret;
+}
+
+int devlink_compat_phys_port_name_get(struct net_device *dev,
+ char *name, size_t len)
+{
+ struct devlink_port *devlink_port;
+
+ /* RTNL mutex is held here which ensures that devlink_port
+ * instance cannot disappear in the middle. No need to take
+ * any devlink lock as only permanent values are accessed.
+ */
+ ASSERT_RTNL();
+
+ devlink_port = netdev_to_devlink_port(dev);
+ if (!devlink_port)
+ return -EOPNOTSUPP;
+
+ return __devlink_port_phys_port_name_get(devlink_port, name, len);
+}
+
+int devlink_compat_switch_id_get(struct net_device *dev,
+ struct netdev_phys_item_id *ppid)
+{
+ struct devlink_port *devlink_port;
+
+ /* Caller must hold RTNL mutex or reference to dev, which ensures that
+ * devlink_port instance cannot disappear in the middle. No need to take
+ * any devlink lock as only permanent values are accessed.
+ */
+ devlink_port = netdev_to_devlink_port(dev);
+ if (!devlink_port || !devlink_port->switch_port)
+ return -EOPNOTSUPP;
+
+ memcpy(ppid, &devlink_port->attrs.switch_id, sizeof(*ppid));
+
+ return 0;
+}
+
+static void __net_exit devlink_pernet_pre_exit(struct net *net)
+{
+ struct devlink *devlink;
+ u32 actions_performed;
+ unsigned long index;
+ int err;
+
+ /* In case network namespace is getting destroyed, reload
+ * all devlink instances from this namespace into init_net.
+ */
+ devlinks_xa_for_each_registered_get(net, index, devlink) {
+ WARN_ON(!(devlink->features & DEVLINK_F_RELOAD));
+ mutex_lock(&devlink->lock);
+ err = devlink_reload(devlink, &init_net,
+ DEVLINK_RELOAD_ACTION_DRIVER_REINIT,
+ DEVLINK_RELOAD_LIMIT_UNSPEC,
+ &actions_performed, NULL);
+ mutex_unlock(&devlink->lock);
+ if (err && err != -EOPNOTSUPP)
+ pr_warn("Failed to reload devlink instance into init_net\n");
+ devlink_put(devlink);
+ }
+}
+
+static struct pernet_operations devlink_pernet_ops __net_initdata = {
+ .pre_exit = devlink_pernet_pre_exit,
+};
+
+static int __init devlink_init(void)
+{
+ int err;
+
+ err = genl_register_family(&devlink_nl_family);
+ if (err)
+ goto out;
+ err = register_pernet_subsys(&devlink_pernet_ops);
+
+out:
+ WARN_ON(err);
+ return err;
+}
+
+subsys_initcall(devlink_init);
diff --git a/net/ipv4/af_inet.c b/net/ipv4/af_inet.c
index ebb737ac9e89..04853c83c85c 100644
--- a/net/ipv4/af_inet.c
+++ b/net/ipv4/af_inet.c
@@ -340,7 +340,7 @@ static int inet_create(struct net *net, struct socket *sock, int protocol,
else
inet->pmtudisc = IP_PMTUDISC_WANT;

- inet->inet_id = 0;
+ atomic_set(&inet->inet_id, 0);

sock_init_data(sock, sk);

diff --git a/net/ipv4/datagram.c b/net/ipv4/datagram.c
index 4d1af0cd7d99..cb5dbee9e018 100644
--- a/net/ipv4/datagram.c
+++ b/net/ipv4/datagram.c
@@ -73,7 +73,7 @@ int __ip4_datagram_connect(struct sock *sk, struct sockaddr *uaddr, int addr_len
reuseport_has_conns_set(sk);
sk->sk_state = TCP_ESTABLISHED;
sk_set_txhash(sk);
- inet->inet_id = get_random_u16();
+ atomic_set(&inet->inet_id, get_random_u16());

sk_dst_set(sk, &rt->dst);
err = 0;
diff --git a/net/ipv4/tcp_ipv4.c b/net/ipv4/tcp_ipv4.c
index 08921b96f972..f9b8a4a1d2ed 100644
--- a/net/ipv4/tcp_ipv4.c
+++ b/net/ipv4/tcp_ipv4.c
@@ -312,7 +312,7 @@ int tcp_v4_connect(struct sock *sk, struct sockaddr *uaddr, int addr_len)
inet->inet_daddr));
}

- inet->inet_id = get_random_u16();
+ atomic_set(&inet->inet_id, get_random_u16());

if (tcp_fastopen_defer_connect(sk, &err))
return err;
@@ -1539,7 +1539,7 @@ struct sock *tcp_v4_syn_recv_sock(const struct sock *sk, struct sk_buff *skb,
inet_csk(newsk)->icsk_ext_hdr_len = 0;
if (inet_opt)
inet_csk(newsk)->icsk_ext_hdr_len = inet_opt->opt.optlen;
- newinet->inet_id = get_random_u16();
+ atomic_set(&newinet->inet_id, get_random_u16());

/* Set ToS of the new socket based upon the value of incoming SYN.
* ECT bits are set later in tcp_init_transfer().
diff --git a/net/mac80211/rx.c b/net/mac80211/rx.c
index 0f81492da0b4..55dc0610e863 100644
--- a/net/mac80211/rx.c
+++ b/net/mac80211/rx.c
@@ -1102,7 +1102,8 @@ static inline bool ieee80211_rx_reorder_ready(struct tid_ampdu_rx *tid_agg_rx,
struct sk_buff *tail = skb_peek_tail(frames);
struct ieee80211_rx_status *status;

- if (tid_agg_rx->reorder_buf_filtered & BIT_ULL(index))
+ if (tid_agg_rx->reorder_buf_filtered &&
+ tid_agg_rx->reorder_buf_filtered & BIT_ULL(index))
return true;

if (!tail)
@@ -1143,7 +1144,8 @@ static void ieee80211_release_reorder_frame(struct ieee80211_sub_if_data *sdata,
}

no_frame:
- tid_agg_rx->reorder_buf_filtered &= ~BIT_ULL(index);
+ if (tid_agg_rx->reorder_buf_filtered)
+ tid_agg_rx->reorder_buf_filtered &= ~BIT_ULL(index);
tid_agg_rx->head_seq_num = ieee80211_sn_inc(tid_agg_rx->head_seq_num);
}

@@ -4162,6 +4164,7 @@ void ieee80211_mark_rx_ba_filtered_frames(struct ieee80211_sta *pubsta, u8 tid,
u16 ssn, u64 filtered,
u16 received_mpdus)
{
+ struct ieee80211_local *local;
struct sta_info *sta;
struct tid_ampdu_rx *tid_agg_rx;
struct sk_buff_head frames;
@@ -4179,6 +4182,11 @@ void ieee80211_mark_rx_ba_filtered_frames(struct ieee80211_sta *pubsta, u8 tid,

sta = container_of(pubsta, struct sta_info, sta);

+ local = sta->sdata->local;
+ WARN_ONCE(local->hw.max_rx_aggregation_subframes > 64,
+ "RX BA marker can't support max_rx_aggregation_subframes %u > 64\n",
+ local->hw.max_rx_aggregation_subframes);
+
if (!ieee80211_rx_data_set_sta(&rx, sta, -1))
return;

diff --git a/net/netfilter/nf_tables_api.c b/net/netfilter/nf_tables_api.c
index 4c2df7af73f7..3c5cac9bd9b7 100644
--- a/net/netfilter/nf_tables_api.c
+++ b/net/netfilter/nf_tables_api.c
@@ -10509,7 +10509,7 @@ static int nft_rcv_nl_event(struct notifier_block *this, unsigned long event,
deleted = 0;
mutex_lock(&nft_net->commit_mutex);
if (!list_empty(&nf_tables_destroy_list))
- rcu_barrier();
+ nf_tables_trans_destroy_flush_work();
again:
list_for_each_entry(table, &nft_net->tables, list) {
if (nft_table_has_owner(table) &&
diff --git a/net/netfilter/nft_set_pipapo.c b/net/netfilter/nft_set_pipapo.c
index 32cfd0a84b0e..8c16681884b7 100644
--- a/net/netfilter/nft_set_pipapo.c
+++ b/net/netfilter/nft_set_pipapo.c
@@ -901,12 +901,14 @@ static void pipapo_lt_bits_adjust(struct nft_pipapo_field *f)
static int pipapo_insert(struct nft_pipapo_field *f, const uint8_t *k,
int mask_bits)
{
- int rule = f->rules++, group, ret, bit_offset = 0;
+ int rule = f->rules, group, ret, bit_offset = 0;

- ret = pipapo_resize(f, f->rules - 1, f->rules);
+ ret = pipapo_resize(f, f->rules, f->rules + 1);
if (ret)
return ret;

+ f->rules++;
+
for (group = 0; group < f->groups; group++) {
int i, v;
u8 mask;
@@ -1051,7 +1053,9 @@ static int pipapo_expand(struct nft_pipapo_field *f,
step++;
if (step >= len) {
if (!masks) {
- pipapo_insert(f, base, 0);
+ err = pipapo_insert(f, base, 0);
+ if (err < 0)
+ return err;
masks = 1;
}
goto out;
@@ -1234,6 +1238,9 @@ static int nft_pipapo_insert(const struct net *net, const struct nft_set *set,
else
ret = pipapo_expand(f, start, end, f->groups * f->bb);

+ if (ret < 0)
+ return ret;
+
if (f->bsize > bsize_max)
bsize_max = f->bsize;

diff --git a/net/sched/sch_api.c b/net/sched/sch_api.c
index 01d07e6a6811..e8f988e1c7e6 100644
--- a/net/sched/sch_api.c
+++ b/net/sched/sch_api.c
@@ -1550,10 +1550,28 @@ static int tc_get_qdisc(struct sk_buff *skb, struct nlmsghdr *n,
return 0;
}

+static bool req_create_or_replace(struct nlmsghdr *n)
+{
+ return (n->nlmsg_flags & NLM_F_CREATE &&
+ n->nlmsg_flags & NLM_F_REPLACE);
+}
+
+static bool req_create_exclusive(struct nlmsghdr *n)
+{
+ return (n->nlmsg_flags & NLM_F_CREATE &&
+ n->nlmsg_flags & NLM_F_EXCL);
+}
+
+static bool req_change(struct nlmsghdr *n)
+{
+ return (!(n->nlmsg_flags & NLM_F_CREATE) &&
+ !(n->nlmsg_flags & NLM_F_REPLACE) &&
+ !(n->nlmsg_flags & NLM_F_EXCL));
+}
+
/*
* Create/change qdisc.
*/
-
static int tc_modify_qdisc(struct sk_buff *skb, struct nlmsghdr *n,
struct netlink_ext_ack *extack)
{
@@ -1647,27 +1665,35 @@ static int tc_modify_qdisc(struct sk_buff *skb, struct nlmsghdr *n,
*
* We know, that some child q is already
* attached to this parent and have choice:
- * either to change it or to create/graft new one.
+ * 1) change it or 2) create/graft new one.
+ * If the requested qdisc kind is different
+ * than the existing one, then we choose graft.
+ * If they are the same then this is "change"
+ * operation - just let it fallthrough..
*
* 1. We are allowed to create/graft only
- * if CREATE and REPLACE flags are set.
+ * if the request is explicitly stating
+ * "please create if it doesn't exist".
*
- * 2. If EXCL is set, requestor wanted to say,
- * that qdisc tcm_handle is not expected
+ * 2. If the request is to exclusive create
+ * then the qdisc tcm_handle is not expected
* to exist, so that we choose create/graft too.
*
* 3. The last case is when no flags are set.
+ * This will happen when for example tc
+ * utility issues a "change" command.
* Alas, it is sort of hole in API, we
* cannot decide what to do unambiguously.
- * For now we select create/graft, if
- * user gave KIND, which does not match existing.
+ * For now we select create/graft.
*/
- if ((n->nlmsg_flags & NLM_F_CREATE) &&
- (n->nlmsg_flags & NLM_F_REPLACE) &&
- ((n->nlmsg_flags & NLM_F_EXCL) ||
- (tca[TCA_KIND] &&
- nla_strcmp(tca[TCA_KIND], q->ops->id))))
- goto create_n_graft;
+ if (tca[TCA_KIND] &&
+ nla_strcmp(tca[TCA_KIND], q->ops->id)) {
+ if (req_create_or_replace(n) ||
+ req_create_exclusive(n))
+ goto create_n_graft;
+ else if (req_change(n))
+ goto create_n_graft2;
+ }
}
}
} else {
@@ -1701,6 +1727,7 @@ static int tc_modify_qdisc(struct sk_buff *skb, struct nlmsghdr *n,
NL_SET_ERR_MSG(extack, "Qdisc not found. To create specify NLM_F_CREATE flag");
return -ENOENT;
}
+create_n_graft2:
if (clid == TC_H_INGRESS) {
if (dev_ingress_queue(dev)) {
q = qdisc_create(dev, dev_ingress_queue(dev),
diff --git a/net/sctp/socket.c b/net/sctp/socket.c
index c806d272107a..a11b0d903514 100644
--- a/net/sctp/socket.c
+++ b/net/sctp/socket.c
@@ -98,7 +98,7 @@ struct percpu_counter sctp_sockets_allocated;

static void sctp_enter_memory_pressure(struct sock *sk)
{
- sctp_memory_pressure = 1;
+ WRITE_ONCE(sctp_memory_pressure, 1);
}

@@ -9472,7 +9472,7 @@ void sctp_copy_sock(struct sock *newsk, struct sock *sk,
newinet->inet_rcv_saddr = inet->inet_rcv_saddr;
newinet->inet_dport = htons(asoc->peer.port);
newinet->pmtudisc = inet->pmtudisc;
- newinet->inet_id = get_random_u16();
+ atomic_set(&newinet->inet_id, get_random_u16());

newinet->uc_ttl = inet->uc_ttl;
newinet->mc_loop = 1;
diff --git a/net/sunrpc/xprtrdma/verbs.c b/net/sunrpc/xprtrdma/verbs.c
index b098fde373ab..28c0771c4e8c 100644
--- a/net/sunrpc/xprtrdma/verbs.c
+++ b/net/sunrpc/xprtrdma/verbs.c
@@ -935,9 +935,6 @@ struct rpcrdma_rep *rpcrdma_rep_create(struct rpcrdma_xprt *r_xprt,
if (!rep->rr_rdmabuf)
goto out_free;

- if (!rpcrdma_regbuf_dma_map(r_xprt, rep->rr_rdmabuf))
- goto out_free_regbuf;
-
rep->rr_cid.ci_completion_id =
atomic_inc_return(&r_xprt->rx_ep->re_completion_ids);

@@ -956,8 +953,6 @@ struct rpcrdma_rep *rpcrdma_rep_create(struct rpcrdma_xprt *r_xprt,
spin_unlock(&buf->rb_lock);
return rep;

-out_free_regbuf:
- rpcrdma_regbuf_free(rep->rr_rdmabuf);
out_free:
kfree(rep);
out:
@@ -1363,6 +1358,10 @@ void rpcrdma_post_recvs(struct rpcrdma_xprt *r_xprt, int needed, bool temp)
rep = rpcrdma_rep_create(r_xprt, temp);
if (!rep)
break;
+ if (!rpcrdma_regbuf_dma_map(r_xprt, rep->rr_rdmabuf)) {
+ rpcrdma_rep_put(buf, rep);
+ break;
+ }

rep->rr_cid.ci_queue_id = ep->re_attr.recv_cq->res.id;
trace_xprtrdma_post_recv(rep);
diff --git a/security/selinux/ss/policydb.c b/security/selinux/ss/policydb.c
index adcfb63b3550..6f9ff4643dcb 100644
--- a/security/selinux/ss/policydb.c
+++ b/security/selinux/ss/policydb.c
@@ -2005,6 +2005,7 @@ static int filename_trans_read_helper(struct policydb *p, void *fp)
if (!datum)
goto out;

+ datum->next = NULL;
*dst = datum;

/* ebitmap_read() will at least init the bitmap */
@@ -2017,7 +2018,6 @@ static int filename_trans_read_helper(struct policydb *p, void *fp)
goto out;

datum->otype = le32_to_cpu(buf[0]);
- datum->next = NULL;

dst = &datum->next;
}
diff --git a/sound/pci/ymfpci/ymfpci.c b/sound/pci/ymfpci/ymfpci.c
index 82d4e0fda91b..d62a0e2ddf60 100644
--- a/sound/pci/ymfpci/ymfpci.c
+++ b/sound/pci/ymfpci/ymfpci.c
@@ -150,8 +150,8 @@ static inline int snd_ymfpci_create_gameport(struct snd_ymfpci *chip, int dev, i
void snd_ymfpci_free_gameport(struct snd_ymfpci *chip) { }
#endif /* SUPPORT_JOYSTICK */

-static int snd_card_ymfpci_probe(struct pci_dev *pci,
- const struct pci_device_id *pci_id)
+static int __snd_card_ymfpci_probe(struct pci_dev *pci,
+ const struct pci_device_id *pci_id)
{
static int dev;
struct snd_card *card;
@@ -333,6 +333,12 @@ static int snd_card_ymfpci_probe(struct pci_dev *pci,
return 0;
}

+static int snd_card_ymfpci_probe(struct pci_dev *pci,
+ const struct pci_device_id *pci_id)
+{
+ return snd_card_free_on_error(&pci->dev, __snd_card_ymfpci_probe(pci, pci_id));
+}
+
static struct pci_driver ymfpci_driver = {
.name = KBUILD_MODNAME,
.id_table = snd_ymfpci_ids,
diff --git a/sound/soc/amd/Kconfig b/sound/soc/amd/Kconfig
index 3968c478c938..44d4e6e51a35 100644
--- a/sound/soc/amd/Kconfig
+++ b/sound/soc/amd/Kconfig
@@ -71,6 +71,7 @@ config SND_SOC_AMD_RENOIR_MACH
config SND_SOC_AMD_ACP5x
tristate "AMD Audio Coprocessor-v5.x I2S support"
depends on X86 && PCI
+ select SND_AMD_ACP_CONFIG
help
This option enables ACP v5.x support on AMD platform

diff --git a/sound/soc/amd/yc/acp6x-mach.c b/sound/soc/amd/yc/acp6x-mach.c
index c1ca3ceac5f2..9a9571c3f08c 100644
--- a/sound/soc/amd/yc/acp6x-mach.c
+++ b/sound/soc/amd/yc/acp6x-mach.c
@@ -217,7 +217,7 @@ static const struct dmi_system_id yc_acp_quirk_table[] = {
.driver_data = &acp6x_card,
.matches = {
DMI_MATCH(DMI_BOARD_VENDOR, "LENOVO"),
- DMI_MATCH(DMI_PRODUCT_NAME, "82"),
+ DMI_MATCH(DMI_PRODUCT_NAME, "82V2"),
}
},
{
@@ -248,6 +248,13 @@ static const struct dmi_system_id yc_acp_quirk_table[] = {
DMI_MATCH(DMI_PRODUCT_NAME, "Redmi Book Pro 14 2022"),
}
},
+ {
+ .driver_data = &acp6x_card,
+ .matches = {
+ DMI_MATCH(DMI_BOARD_VENDOR, "ASUSTeK COMPUTER INC."),
+ DMI_MATCH(DMI_PRODUCT_NAME, "M6500RC"),
+ }
+ },
{
.driver_data = &acp6x_card,
.matches = {
diff --git a/sound/soc/codecs/cs35l41.c b/sound/soc/codecs/cs35l41.c
index f2b5032daa6a..2f4b0ee93ace 100644
--- a/sound/soc/codecs/cs35l41.c
+++ b/sound/soc/codecs/cs35l41.c
@@ -167,7 +167,7 @@ static int cs35l41_get_fs_mon_config_index(int freq)
static const DECLARE_TLV_DB_RANGE(dig_vol_tlv,
0, 0, TLV_DB_SCALE_ITEM(TLV_DB_GAIN_MUTE, 0, 1),
1, 913, TLV_DB_MINMAX_ITEM(-10200, 1200));
-static DECLARE_TLV_DB_SCALE(amp_gain_tlv, 0, 1, 1);
+static DECLARE_TLV_DB_SCALE(amp_gain_tlv, 50, 100, 0);

static const struct snd_kcontrol_new dre_ctrl =
SOC_DAPM_SINGLE("Switch", CS35L41_PWR_CTRL3, 20, 1, 0);
diff --git a/tools/testing/selftests/drivers/net/bonding/bond-break-lacpdu-tx.sh b/tools/testing/selftests/drivers/net/bonding/bond-break-lacpdu-tx.sh
index 47ab90596acb..6358df5752f9 100755
--- a/tools/testing/selftests/drivers/net/bonding/bond-break-lacpdu-tx.sh
+++ b/tools/testing/selftests/drivers/net/bonding/bond-break-lacpdu-tx.sh
@@ -57,8 +57,8 @@ ip link add name veth2-bond type veth peer name veth2-end

# add ports
ip link set fbond master fab-br0
-ip link set veth1-bond down master fbond
-ip link set veth2-bond down master fbond
+ip link set veth1-bond master fbond
+ip link set veth2-bond master fbond

# bring up
ip link set veth1-end up
diff --git a/tools/testing/selftests/drivers/net/mlxsw/sharedbuffer.sh b/tools/testing/selftests/drivers/net/mlxsw/sharedbuffer.sh
index 7d9e73a43a49..0c47faff9274 100755
--- a/tools/testing/selftests/drivers/net/mlxsw/sharedbuffer.sh
+++ b/tools/testing/selftests/drivers/net/mlxsw/sharedbuffer.sh
@@ -98,12 +98,12 @@ sb_occ_etc_check()

port_pool_test()
{
- local exp_max_occ=288
+ local exp_max_occ=$(devlink_cell_size_get)
local max_occ

devlink sb occupancy clearmax $DEVLINK_DEV

- $MZ $h1 -c 1 -p 160 -a $h1mac -b $h2mac -A 192.0.1.1 -B 192.0.1.2 \
+ $MZ $h1 -c 1 -p 10 -a $h1mac -b $h2mac -A 192.0.1.1 -B 192.0.1.2 \
-t ip -q

devlink sb occupancy snapshot $DEVLINK_DEV
@@ -126,12 +126,12 @@ port_pool_test()

port_tc_ip_test()
{
- local exp_max_occ=288
+ local exp_max_occ=$(devlink_cell_size_get)
local max_occ

devlink sb occupancy clearmax $DEVLINK_DEV

- $MZ $h1 -c 1 -p 160 -a $h1mac -b $h2mac -A 192.0.1.1 -B 192.0.1.2 \
+ $MZ $h1 -c 1 -p 10 -a $h1mac -b $h2mac -A 192.0.1.1 -B 192.0.1.2 \
-t ip -q

devlink sb occupancy snapshot $DEVLINK_DEV
@@ -154,16 +154,12 @@ port_tc_ip_test()

port_tc_arp_test()
{
- local exp_max_occ=96
+ local exp_max_occ=$(devlink_cell_size_get)
local max_occ

- if [[ $MLXSW_CHIP != "mlxsw_spectrum" ]]; then
- exp_max_occ=144
- fi
-
devlink sb occupancy clearmax $DEVLINK_DEV

- $MZ $h1 -c 1 -p 160 -a $h1mac -A 192.0.1.1 -t arp -q
+ $MZ $h1 -c 1 -p 10 -a $h1mac -A 192.0.1.1 -t arp -q

devlink sb occupancy snapshot $DEVLINK_DEV

diff --git a/tools/testing/selftests/net/Makefile b/tools/testing/selftests/net/Makefile
index 69c58362c0ed..48d1a68be1d5 100644
--- a/tools/testing/selftests/net/Makefile
+++ b/tools/testing/selftests/net/Makefile
@@ -71,14 +71,60 @@ TEST_GEN_FILES += bind_bhash
TEST_GEN_PROGS += sk_bind_sendto_listen
TEST_GEN_PROGS += sk_connect_zero_addr
TEST_PROGS += test_ingress_egress_chaining.sh
+TEST_GEN_FILES += nat6to4.o

TEST_FILES := settings

include ../lib.mk

-include bpf/Makefile
-
$(OUTPUT)/reuseport_bpf_numa: LDLIBS += -lnuma
$(OUTPUT)/tcp_mmap: LDLIBS += -lpthread
$(OUTPUT)/tcp_inq: LDLIBS += -lpthread
$(OUTPUT)/bind_bhash: LDLIBS += -lpthread
+
+# Rules to generate bpf obj nat6to4.o
+CLANG ?= clang
+SCRATCH_DIR := $(OUTPUT)/tools
+BUILD_DIR := $(SCRATCH_DIR)/build
+BPFDIR := $(abspath ../../../lib/bpf)
+APIDIR := $(abspath ../../../include/uapi)
+
+CCINCLUDE += -I../bpf
+CCINCLUDE += -I../../../../usr/include/
+CCINCLUDE += -I$(SCRATCH_DIR)/include
+
+BPFOBJ := $(BUILD_DIR)/libbpf/libbpf.a
+
+MAKE_DIRS := $(BUILD_DIR)/libbpf
+$(MAKE_DIRS):
+ mkdir -p $@
+
+# Get Clang's default includes on this system, as opposed to those seen by
+# '-target bpf'. This fixes "missing" files on some architectures/distros,
+# such as asm/byteorder.h, asm/socket.h, asm/sockios.h, sys/cdefs.h etc.
+#
+# Use '-idirafter': Don't interfere with include mechanics except where the
+# build would have failed anyways.
+define get_sys_includes
+$(shell $(1) $(2) -v -E - </dev/null 2>&1 \
+ | sed -n '/<...> search starts here:/,/End of search list./{ s| $/.*$|-idirafter \1|p }') \
+$(shell $(1) $(2) -dM -E - </dev/null | grep '__riscv_xlen ' | awk '{printf("-D__riscv_xlen=%d -D__BITS_PER_LONG=%d", $$3, $$3)}')
+endef
+
+ifneq ($(CROSS_COMPILE),)
+CLANG_TARGET_ARCH = --target=$(notdir $(CROSS_COMPILE:%-=%))
+endif
+
+CLANG_SYS_INCLUDES = $(call get_sys_includes,$(CLANG),$(CLANG_TARGET_ARCH))
+
+$(OUTPUT)/nat6to4.o: nat6to4.c $(BPFOBJ) | $(MAKE_DIRS)
+ $(CLANG) -O2 -target bpf -c $< $(CCINCLUDE) $(CLANG_SYS_INCLUDES) -o $@
+
+$(BPFOBJ): $(wildcard $(BPFDIR)/*.[ch] $(BPFDIR)/Makefile) \
+ $(APIDIR)/linux/bpf.h \
+ | $(BUILD_DIR)/libbpf
+ $(MAKE) $(submake_extras) -C $(BPFDIR) OUTPUT=$(BUILD_DIR)/libbpf/ \
+ EXTRA_CFLAGS='-g -O0' \
+ DESTDIR=$(SCRATCH_DIR) prefix= all install_headers
+
+EXTRA_CLEAN := $(SCRATCH_DIR)
diff --git a/tools/testing/selftests/net/bpf/Makefile b/tools/testing/selftests/net/bpf/Makefile
deleted file mode 100644
index 8ccaf8732eb2..000000000000
--- a/tools/testing/selftests/net/bpf/Makefile
+++ /dev/null
@@ -1,14 +0,0 @@
-# SPDX-License-Identifier: GPL-2.0
-
-CLANG ?= clang
-CCINCLUDE += -I../../bpf
-CCINCLUDE += -I../../../../lib
-CCINCLUDE += -I../../../../../usr/include/
-
-TEST_CUSTOM_PROGS = $(OUTPUT)/bpf/nat6to4.o
-all: $(TEST_CUSTOM_PROGS)
-
-$(OUTPUT)/%.o: %.c
- $(CLANG) -O2 -target bpf -c $< $(CCINCLUDE) -o $@
-
-EXTRA_CLEAN := $(TEST_CUSTOM_PROGS)
diff --git a/tools/testing/selftests/net/bpf/nat6to4.c b/tools/testing/selftests/net/bpf/nat6to4.c
deleted file mode 100644
index ac54c36b25fc..000000000000
--- a/tools/testing/selftests/net/bpf/nat6to4.c
+++ /dev/null
@@ -1,285 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-only
-/*
- * This code is taken from the Android Open Source Project and the author
- * (Maciej Żenczykowski) has gave permission to relicense it under the
- * GPLv2. Therefore this program is free software;
- * You can redistribute it and/or modify it under the terms of the GNU
- * General Public License version 2 as published by the Free Software
- * Foundation
-
- * The original headers, including the original license headers, are
- * included below for completeness.
- *
- * Copyright (C) 2019 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-#include <linux/bpf.h>
-#include <linux/if.h>
-#include <linux/if_ether.h>
-#include <linux/if_packet.h>
-#include <linux/in.h>
-#include <linux/in6.h>
-#include <linux/ip.h>
-#include <linux/ipv6.h>
-#include <linux/pkt_cls.h>
-#include <linux/swab.h>
-#include <stdbool.h>
-#include <stdint.h>
-
-
-#include <linux/udp.h>
-
-#include <bpf/bpf_helpers.h>
-#include <bpf/bpf_endian.h>
-
-#define IP_DF 0x4000 // Flag: "Don't Fragment"
-
-SEC("schedcls/ingress6/nat_6")
-int sched_cls_ingress6_nat_6_prog(struct __sk_buff *skb)
-{
- const int l2_header_size = sizeof(struct ethhdr);
- void *data = (void *)(long)skb->data;
- const void *data_end = (void *)(long)skb->data_end;
- const struct ethhdr * const eth = data; // used iff is_ethernet
- const struct ipv6hdr * const ip6 = (void *)(eth + 1);
-
- // Require ethernet dst mac address to be our unicast address.
- if (skb->pkt_type != PACKET_HOST)
- return TC_ACT_OK;
-
- // Must be meta-ethernet IPv6 frame
- if (skb->protocol != bpf_htons(ETH_P_IPV6))
- return TC_ACT_OK;
-
- // Must have (ethernet and) ipv6 header
- if (data + l2_header_size + sizeof(*ip6) > data_end)
- return TC_ACT_OK;
-
- // Ethertype - if present - must be IPv6
- if (eth->h_proto != bpf_htons(ETH_P_IPV6))
- return TC_ACT_OK;
-
- // IP version must be 6
- if (ip6->version != 6)
- return TC_ACT_OK;
- // Maximum IPv6 payload length that can be translated to IPv4
- if (bpf_ntohs(ip6->payload_len) > 0xFFFF - sizeof(struct iphdr))
- return TC_ACT_OK;
- switch (ip6->nexthdr) {
- case IPPROTO_TCP: // For TCP & UDP the checksum neutrality of the chosen IPv6
- case IPPROTO_UDP: // address means there is no need to update their checksums.
- case IPPROTO_GRE: // We do not need to bother looking at GRE/ESP headers,
- case IPPROTO_ESP: // since there is never a checksum to update.
- break;
- default: // do not know how to handle anything else
- return TC_ACT_OK;
- }
-
- struct ethhdr eth2; // used iff is_ethernet
-
- eth2 = *eth; // Copy over the ethernet header (src/dst mac)
- eth2.h_proto = bpf_htons(ETH_P_IP); // But replace the ethertype
-
- struct iphdr ip = {
- .version = 4, // u4
- .ihl = sizeof(struct iphdr) / sizeof(__u32), // u4
- .tos = (ip6->priority << 4) + (ip6->flow_lbl[0] >> 4), // u8
- .tot_len = bpf_htons(bpf_ntohs(ip6->payload_len) + sizeof(struct iphdr)), // u16
- .id = 0, // u16
- .frag_off = bpf_htons(IP_DF), // u16
- .ttl = ip6->hop_limit, // u8
- .protocol = ip6->nexthdr, // u8
- .check = 0, // u16
- .saddr = 0x0201a8c0, // u32
- .daddr = 0x0101a8c0, // u32
- };
-
- // Calculate the IPv4 one's complement checksum of the IPv4 header.
- __wsum sum4 = 0;
-
- for (int i = 0; i < sizeof(ip) / sizeof(__u16); ++i)
- sum4 += ((__u16 *)&ip)[i];
-
- // Note that sum4 is guaranteed to be non-zero by virtue of ip.version == 4
- sum4 = (sum4 & 0xFFFF) + (sum4 >> 16); // collapse u32 into range 1 .. 0x1FFFE
- sum4 = (sum4 & 0xFFFF) + (sum4 >> 16); // collapse any potential carry into u16
- ip.check = (__u16)~sum4; // sum4 cannot be zero, so this is never 0xFFFF
-
- // Calculate the *negative* IPv6 16-bit one's complement checksum of the IPv6 header.
- __wsum sum6 = 0;
- // We'll end up with a non-zero sum due to ip6->version == 6 (which has '0' bits)
- for (int i = 0; i < sizeof(*ip6) / sizeof(__u16); ++i)
- sum6 += ~((__u16 *)ip6)[i]; // note the bitwise negation
-
- // Note that there is no L4 checksum update: we are relying on the checksum neutrality
- // of the ipv6 address chosen by netd's ClatdController.
-
- // Packet mutations begin - point of no return, but if this first modification fails
- // the packet is probably still pristine, so let clatd handle it.
- if (bpf_skb_change_proto(skb, bpf_htons(ETH_P_IP), 0))
- return TC_ACT_OK;
- bpf_csum_update(skb, sum6);
-
- data = (void *)(long)skb->data;
- data_end = (void *)(long)skb->data_end;
- if (data + l2_header_size + sizeof(struct iphdr) > data_end)
- return TC_ACT_SHOT;
-
- struct ethhdr *new_eth = data;
-
- // Copy over the updated ethernet header
- *new_eth = eth2;
-
- // Copy over the new ipv4 header.
- *(struct iphdr *)(new_eth + 1) = ip;
- return bpf_redirect(skb->ifindex, BPF_F_INGRESS);
-}
-
-SEC("schedcls/egress4/snat4")
-int sched_cls_egress4_snat4_prog(struct __sk_buff *skb)
-{
- const int l2_header_size = sizeof(struct ethhdr);
- void *data = (void *)(long)skb->data;
- const void *data_end = (void *)(long)skb->data_end;
- const struct ethhdr *const eth = data; // used iff is_ethernet
- const struct iphdr *const ip4 = (void *)(eth + 1);
-
- // Must be meta-ethernet IPv4 frame
- if (skb->protocol != bpf_htons(ETH_P_IP))
- return TC_ACT_OK;
-
- // Must have ipv4 header
- if (data + l2_header_size + sizeof(struct ipv6hdr) > data_end)
- return TC_ACT_OK;
-
- // Ethertype - if present - must be IPv4
- if (eth->h_proto != bpf_htons(ETH_P_IP))
- return TC_ACT_OK;
-
- // IP version must be 4
- if (ip4->version != 4)
- return TC_ACT_OK;
-
- // We cannot handle IP options, just standard 20 byte == 5 dword minimal IPv4 header
- if (ip4->ihl != 5)
- return TC_ACT_OK;
-
- // Maximum IPv6 payload length that can be translated to IPv4
- if (bpf_htons(ip4->tot_len) > 0xFFFF - sizeof(struct ipv6hdr))
- return TC_ACT_OK;
-
- // Calculate the IPv4 one's complement checksum of the IPv4 header.
- __wsum sum4 = 0;
-
- for (int i = 0; i < sizeof(*ip4) / sizeof(__u16); ++i)
- sum4 += ((__u16 *)ip4)[i];
-
- // Note that sum4 is guaranteed to be non-zero by virtue of ip4->version == 4
- sum4 = (sum4 & 0xFFFF) + (sum4 >> 16); // collapse u32 into range 1 .. 0x1FFFE
- sum4 = (sum4 & 0xFFFF) + (sum4 >> 16); // collapse any potential carry into u16
- // for a correct checksum we should get *a* zero, but sum4 must be positive, ie 0xFFFF
- if (sum4 != 0xFFFF)
- return TC_ACT_OK;
-
- // Minimum IPv4 total length is the size of the header
- if (bpf_ntohs(ip4->tot_len) < sizeof(*ip4))
- return TC_ACT_OK;
-
- // We are incapable of dealing with IPv4 fragments
- if (ip4->frag_off & ~bpf_htons(IP_DF))
- return TC_ACT_OK;
-
- switch (ip4->protocol) {
- case IPPROTO_TCP: // For TCP & UDP the checksum neutrality of the chosen IPv6
- case IPPROTO_GRE: // address means there is no need to update their checksums.
- case IPPROTO_ESP: // We do not need to bother looking at GRE/ESP headers,
- break; // since there is never a checksum to update.
-
- case IPPROTO_UDP: // See above comment, but must also have UDP header...
- if (data + sizeof(*ip4) + sizeof(struct udphdr) > data_end)
- return TC_ACT_OK;
- const struct udphdr *uh = (const struct udphdr *)(ip4 + 1);
- // If IPv4/UDP checksum is 0 then fallback to clatd so it can calculate the
- // checksum. Otherwise the network or more likely the NAT64 gateway might
- // drop the packet because in most cases IPv6/UDP packets with a zero checksum
- // are invalid. See RFC 6935. TODO: calculate checksum via bpf_csum_diff()
- if (!uh->check)
- return TC_ACT_OK;
- break;
-
- default: // do not know how to handle anything else
- return TC_ACT_OK;
- }
- struct ethhdr eth2; // used iff is_ethernet
-
- eth2 = *eth; // Copy over the ethernet header (src/dst mac)
- eth2.h_proto = bpf_htons(ETH_P_IPV6); // But replace the ethertype
-
- struct ipv6hdr ip6 = {
- .version = 6, // __u8:4
- .priority = ip4->tos >> 4, // __u8:4
- .flow_lbl = {(ip4->tos & 0xF) << 4, 0, 0}, // __u8[3]
- .payload_len = bpf_htons(bpf_ntohs(ip4->tot_len) - 20), // __be16
- .nexthdr = ip4->protocol, // __u8
- .hop_limit = ip4->ttl, // __u8
- };
- ip6.saddr.in6_u.u6_addr32[0] = bpf_htonl(0x20010db8);
- ip6.saddr.in6_u.u6_addr32[1] = 0;
- ip6.saddr.in6_u.u6_addr32[2] = 0;
- ip6.saddr.in6_u.u6_addr32[3] = bpf_htonl(1);
- ip6.daddr.in6_u.u6_addr32[0] = bpf_htonl(0x20010db8);
- ip6.daddr.in6_u.u6_addr32[1] = 0;
- ip6.daddr.in6_u.u6_addr32[2] = 0;
- ip6.daddr.in6_u.u6_addr32[3] = bpf_htonl(2);
-
- // Calculate the IPv6 16-bit one's complement checksum of the IPv6 header.
- __wsum sum6 = 0;
- // We'll end up with a non-zero sum due to ip6.version == 6
- for (int i = 0; i < sizeof(ip6) / sizeof(__u16); ++i)
- sum6 += ((__u16 *)&ip6)[i];
-
- // Packet mutations begin - point of no return, but if this first modification fails
- // the packet is probably still pristine, so let clatd handle it.
- if (bpf_skb_change_proto(skb, bpf_htons(ETH_P_IPV6), 0))
- return TC_ACT_OK;
-
- // This takes care of updating the skb->csum field for a CHECKSUM_COMPLETE packet.
- // In such a case, skb->csum is a 16-bit one's complement sum of the entire payload,
- // thus we need to subtract out the ipv4 header's sum, and add in the ipv6 header's sum.
- // However, we've already verified the ipv4 checksum is correct and thus 0.
- // Thus we only need to add the ipv6 header's sum.
- //
- // bpf_csum_update() always succeeds if the skb is CHECKSUM_COMPLETE and returns an error
- // (-ENOTSUPP) if it isn't. So we just ignore the return code (see above for more details).
- bpf_csum_update(skb, sum6);
-
- // bpf_skb_change_proto() invalidates all pointers - reload them.
- data = (void *)(long)skb->data;
- data_end = (void *)(long)skb->data_end;
-
- // I cannot think of any valid way for this error condition to trigger, however I do
- // believe the explicit check is required to keep the in kernel ebpf verifier happy.
- if (data + l2_header_size + sizeof(ip6) > data_end)
- return TC_ACT_SHOT;
-
- struct ethhdr *new_eth = data;
-
- // Copy over the updated ethernet header
- *new_eth = eth2;
- // Copy over the new ipv4 header.
- *(struct ipv6hdr *)(new_eth + 1) = ip6;
- return TC_ACT_OK;
-}
-
-char _license[] SEC("license") = ("GPL");
diff --git a/tools/testing/selftests/net/nat6to4.c b/tools/testing/selftests/net/nat6to4.c
new file mode 100644
index 000000000000..ac54c36b25fc
--- /dev/null
+++ b/tools/testing/selftests/net/nat6to4.c
@@ -0,0 +1,285 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * This code is taken from the Android Open Source Project and the author
+ * (Maciej Żenczykowski) has gave permission to relicense it under the
+ * GPLv2. Therefore this program is free software;
+ * You can redistribute it and/or modify it under the terms of the GNU
+ * General Public License version 2 as published by the Free Software
+ * Foundation
+
+ * The original headers, including the original license headers, are
+ * included below for completeness.
+ *
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+#include <linux/bpf.h>
+#include <linux/if.h>
+#include <linux/if_ether.h>
+#include <linux/if_packet.h>
+#include <linux/in.h>
+#include <linux/in6.h>
+#include <linux/ip.h>
+#include <linux/ipv6.h>
+#include <linux/pkt_cls.h>
+#include <linux/swab.h>
+#include <stdbool.h>
+#include <stdint.h>
+
+
+#include <linux/udp.h>
+
+#include <bpf/bpf_helpers.h>
+#include <bpf/bpf_endian.h>
+
+#define IP_DF 0x4000 // Flag: "Don't Fragment"
+
+SEC("schedcls/ingress6/nat_6")
+int sched_cls_ingress6_nat_6_prog(struct __sk_buff *skb)
+{
+ const int l2_header_size = sizeof(struct ethhdr);
+ void *data = (void *)(long)skb->data;
+ const void *data_end = (void *)(long)skb->data_end;
+ const struct ethhdr * const eth = data; // used iff is_ethernet
+ const struct ipv6hdr * const ip6 = (void *)(eth + 1);
+
+ // Require ethernet dst mac address to be our unicast address.
+ if (skb->pkt_type != PACKET_HOST)
+ return TC_ACT_OK;
+
+ // Must be meta-ethernet IPv6 frame
+ if (skb->protocol != bpf_htons(ETH_P_IPV6))
+ return TC_ACT_OK;
+
+ // Must have (ethernet and) ipv6 header
+ if (data + l2_header_size + sizeof(*ip6) > data_end)
+ return TC_ACT_OK;
+
+ // Ethertype - if present - must be IPv6
+ if (eth->h_proto != bpf_htons(ETH_P_IPV6))
+ return TC_ACT_OK;
+
+ // IP version must be 6
+ if (ip6->version != 6)
+ return TC_ACT_OK;
+ // Maximum IPv6 payload length that can be translated to IPv4
+ if (bpf_ntohs(ip6->payload_len) > 0xFFFF - sizeof(struct iphdr))
+ return TC_ACT_OK;
+ switch (ip6->nexthdr) {
+ case IPPROTO_TCP: // For TCP & UDP the checksum neutrality of the chosen IPv6
+ case IPPROTO_UDP: // address means there is no need to update their checksums.
+ case IPPROTO_GRE: // We do not need to bother looking at GRE/ESP headers,
+ case IPPROTO_ESP: // since there is never a checksum to update.
+ break;
+ default: // do not know how to handle anything else
+ return TC_ACT_OK;
+ }
+
+ struct ethhdr eth2; // used iff is_ethernet
+
+ eth2 = *eth; // Copy over the ethernet header (src/dst mac)
+ eth2.h_proto = bpf_htons(ETH_P_IP); // But replace the ethertype
+
+ struct iphdr ip = {
+ .version = 4, // u4
+ .ihl = sizeof(struct iphdr) / sizeof(__u32), // u4
+ .tos = (ip6->priority << 4) + (ip6->flow_lbl[0] >> 4), // u8
+ .tot_len = bpf_htons(bpf_ntohs(ip6->payload_len) + sizeof(struct iphdr)), // u16
+ .id = 0, // u16
+ .frag_off = bpf_htons(IP_DF), // u16
+ .ttl = ip6->hop_limit, // u8
+ .protocol = ip6->nexthdr, // u8
+ .check = 0, // u16
+ .saddr = 0x0201a8c0, // u32
+ .daddr = 0x0101a8c0, // u32
+ };
+
+ // Calculate the IPv4 one's complement checksum of the IPv4 header.
+ __wsum sum4 = 0;
+
+ for (int i = 0; i < sizeof(ip) / sizeof(__u16); ++i)
+ sum4 += ((__u16 *)&ip)[i];
+
+ // Note that sum4 is guaranteed to be non-zero by virtue of ip.version == 4
+ sum4 = (sum4 & 0xFFFF) + (sum4 >> 16); // collapse u32 into range 1 .. 0x1FFFE
+ sum4 = (sum4 & 0xFFFF) + (sum4 >> 16); // collapse any potential carry into u16
+ ip.check = (__u16)~sum4; // sum4 cannot be zero, so this is never 0xFFFF
+
+ // Calculate the *negative* IPv6 16-bit one's complement checksum of the IPv6 header.
+ __wsum sum6 = 0;
+ // We'll end up with a non-zero sum due to ip6->version == 6 (which has '0' bits)
+ for (int i = 0; i < sizeof(*ip6) / sizeof(__u16); ++i)
+ sum6 += ~((__u16 *)ip6)[i]; // note the bitwise negation
+
+ // Note that there is no L4 checksum update: we are relying on the checksum neutrality
+ // of the ipv6 address chosen by netd's ClatdController.
+
+ // Packet mutations begin - point of no return, but if this first modification fails
+ // the packet is probably still pristine, so let clatd handle it.
+ if (bpf_skb_change_proto(skb, bpf_htons(ETH_P_IP), 0))
+ return TC_ACT_OK;
+ bpf_csum_update(skb, sum6);
+
+ data = (void *)(long)skb->data;
+ data_end = (void *)(long)skb->data_end;
+ if (data + l2_header_size + sizeof(struct iphdr) > data_end)
+ return TC_ACT_SHOT;
+
+ struct ethhdr *new_eth = data;
+
+ // Copy over the updated ethernet header
+ *new_eth = eth2;
+
+ // Copy over the new ipv4 header.
+ *(struct iphdr *)(new_eth + 1) = ip;
+ return bpf_redirect(skb->ifindex, BPF_F_INGRESS);
+}
+
+SEC("schedcls/egress4/snat4")
+int sched_cls_egress4_snat4_prog(struct __sk_buff *skb)
+{
+ const int l2_header_size = sizeof(struct ethhdr);
+ void *data = (void *)(long)skb->data;
+ const void *data_end = (void *)(long)skb->data_end;
+ const struct ethhdr *const eth = data; // used iff is_ethernet
+ const struct iphdr *const ip4 = (void *)(eth + 1);
+
+ // Must be meta-ethernet IPv4 frame
+ if (skb->protocol != bpf_htons(ETH_P_IP))
+ return TC_ACT_OK;
+
+ // Must have ipv4 header
+ if (data + l2_header_size + sizeof(struct ipv6hdr) > data_end)
+ return TC_ACT_OK;
+
+ // Ethertype - if present - must be IPv4
+ if (eth->h_proto != bpf_htons(ETH_P_IP))
+ return TC_ACT_OK;
+
+ // IP version must be 4
+ if (ip4->version != 4)
+ return TC_ACT_OK;
+
+ // We cannot handle IP options, just standard 20 byte == 5 dword minimal IPv4 header
+ if (ip4->ihl != 5)
+ return TC_ACT_OK;
+
+ // Maximum IPv6 payload length that can be translated to IPv4
+ if (bpf_htons(ip4->tot_len) > 0xFFFF - sizeof(struct ipv6hdr))
+ return TC_ACT_OK;
+
+ // Calculate the IPv4 one's complement checksum of the IPv4 header.
+ __wsum sum4 = 0;
+
+ for (int i = 0; i < sizeof(*ip4) / sizeof(__u16); ++i)
+ sum4 += ((__u16 *)ip4)[i];
+
+ // Note that sum4 is guaranteed to be non-zero by virtue of ip4->version == 4
+ sum4 = (sum4 & 0xFFFF) + (sum4 >> 16); // collapse u32 into range 1 .. 0x1FFFE
+ sum4 = (sum4 & 0xFFFF) + (sum4 >> 16); // collapse any potential carry into u16
+ // for a correct checksum we should get *a* zero, but sum4 must be positive, ie 0xFFFF
+ if (sum4 != 0xFFFF)
+ return TC_ACT_OK;
+
+ // Minimum IPv4 total length is the size of the header
+ if (bpf_ntohs(ip4->tot_len) < sizeof(*ip4))
+ return TC_ACT_OK;
+
+ // We are incapable of dealing with IPv4 fragments
+ if (ip4->frag_off & ~bpf_htons(IP_DF))
+ return TC_ACT_OK;
+
+ switch (ip4->protocol) {
+ case IPPROTO_TCP: // For TCP & UDP the checksum neutrality of the chosen IPv6
+ case IPPROTO_GRE: // address means there is no need to update their checksums.
+ case IPPROTO_ESP: // We do not need to bother looking at GRE/ESP headers,
+ break; // since there is never a checksum to update.
+
+ case IPPROTO_UDP: // See above comment, but must also have UDP header...
+ if (data + sizeof(*ip4) + sizeof(struct udphdr) > data_end)
+ return TC_ACT_OK;
+ const struct udphdr *uh = (const struct udphdr *)(ip4 + 1);
+ // If IPv4/UDP checksum is 0 then fallback to clatd so it can calculate the
+ // checksum. Otherwise the network or more likely the NAT64 gateway might
+ // drop the packet because in most cases IPv6/UDP packets with a zero checksum
+ // are invalid. See RFC 6935. TODO: calculate checksum via bpf_csum_diff()
+ if (!uh->check)
+ return TC_ACT_OK;
+ break;
+
+ default: // do not know how to handle anything else
+ return TC_ACT_OK;
+ }
+ struct ethhdr eth2; // used iff is_ethernet
+
+ eth2 = *eth; // Copy over the ethernet header (src/dst mac)
+ eth2.h_proto = bpf_htons(ETH_P_IPV6); // But replace the ethertype
+
+ struct ipv6hdr ip6 = {
+ .version = 6, // __u8:4
+ .priority = ip4->tos >> 4, // __u8:4
+ .flow_lbl = {(ip4->tos & 0xF) << 4, 0, 0}, // __u8[3]
+ .payload_len = bpf_htons(bpf_ntohs(ip4->tot_len) - 20), // __be16
+ .nexthdr = ip4->protocol, // __u8
+ .hop_limit = ip4->ttl, // __u8
+ };
+ ip6.saddr.in6_u.u6_addr32[0] = bpf_htonl(0x20010db8);
+ ip6.saddr.in6_u.u6_addr32[1] = 0;
+ ip6.saddr.in6_u.u6_addr32[2] = 0;
+ ip6.saddr.in6_u.u6_addr32[3] = bpf_htonl(1);
+ ip6.daddr.in6_u.u6_addr32[0] = bpf_htonl(0x20010db8);
+ ip6.daddr.in6_u.u6_addr32[1] = 0;
+ ip6.daddr.in6_u.u6_addr32[2] = 0;
+ ip6.daddr.in6_u.u6_addr32[3] = bpf_htonl(2);
+
+ // Calculate the IPv6 16-bit one's complement checksum of the IPv6 header.
+ __wsum sum6 = 0;
+ // We'll end up with a non-zero sum due to ip6.version == 6
+ for (int i = 0; i < sizeof(ip6) / sizeof(__u16); ++i)
+ sum6 += ((__u16 *)&ip6)[i];
+
+ // Packet mutations begin - point of no return, but if this first modification fails
+ // the packet is probably still pristine, so let clatd handle it.
+ if (bpf_skb_change_proto(skb, bpf_htons(ETH_P_IPV6), 0))
+ return TC_ACT_OK;
+
+ // This takes care of updating the skb->csum field for a CHECKSUM_COMPLETE packet.
+ // In such a case, skb->csum is a 16-bit one's complement sum of the entire payload,
+ // thus we need to subtract out the ipv4 header's sum, and add in the ipv6 header's sum.
+ // However, we've already verified the ipv4 checksum is correct and thus 0.
+ // Thus we only need to add the ipv6 header's sum.
+ //
+ // bpf_csum_update() always succeeds if the skb is CHECKSUM_COMPLETE and returns an error
+ // (-ENOTSUPP) if it isn't. So we just ignore the return code (see above for more details).
+ bpf_csum_update(skb, sum6);
+
+ // bpf_skb_change_proto() invalidates all pointers - reload them.
+ data = (void *)(long)skb->data;
+ data_end = (void *)(long)skb->data_end;
+
+ // I cannot think of any valid way for this error condition to trigger, however I do
+ // believe the explicit check is required to keep the in kernel ebpf verifier happy.
+ if (data + l2_header_size + sizeof(ip6) > data_end)
+ return TC_ACT_SHOT;
+
+ struct ethhdr *new_eth = data;
+
+ // Copy over the updated ethernet header
+ *new_eth = eth2;
+ // Copy over the new ipv4 header.
+ *(struct ipv6hdr *)(new_eth + 1) = ip6;
+ return TC_ACT_OK;
+}
+
+char _license[] SEC("license") = ("GPL");
diff --git a/tools/testing/selftests/net/udpgro_frglist.sh b/tools/testing/selftests/net/udpgro_frglist.sh
index c9c4b9d65839..0a6359bed0b9 100755
--- a/tools/testing/selftests/net/udpgro_frglist.sh
+++ b/tools/testing/selftests/net/udpgro_frglist.sh
@@ -40,8 +40,8 @@ run_one() {

ip -n "${PEER_NS}" link set veth1 xdp object ${BPF_FILE} section xdp
tc -n "${PEER_NS}" qdisc add dev veth1 clsact
- tc -n "${PEER_NS}" filter add dev veth1 ingress prio 4 protocol ipv6 bpf object-file ../bpf/nat6to4.o section schedcls/ingress6/nat_6 direct-action
- tc -n "${PEER_NS}" filter add dev veth1 egress prio 4 protocol ip bpf object-file ../bpf/nat6to4.o section schedcls/egress4/snat4 direct-action
+ tc -n "${PEER_NS}" filter add dev veth1 ingress prio 4 protocol ipv6 bpf object-file nat6to4.o section schedcls/ingress6/nat_6 direct-action
+ tc -n "${PEER_NS}" filter add dev veth1 egress prio 4 protocol ip bpf object-file nat6to4.o section schedcls/egress4/snat4 direct-action
echo ${rx_args}
ip netns exec "${PEER_NS}" ./udpgso_bench_rx ${rx_args} -r &

@@ -88,8 +88,8 @@ if [ ! -f ${BPF_FILE} ]; then
exit -1
fi

-if [ ! -f bpf/nat6to4.o ]; then
- echo "Missing nat6to4 helper. Build bpfnat6to4.o selftest first"
+if [ ! -f nat6to4.o ]; then
+ echo "Missing nat6to4 helper. Build bpf nat6to4.o selftest first"
exit -1
fi

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