[PATCH v2] vmbus: Switch to use new generic UUID API

From: Andy Shevchenko
Date: Thu Jan 10 2019 - 09:25:41 EST

There are new types and helpers that are supposed to be used in new code.

As a preparation to get rid of legacy types and API functions do
the conversion here.

Cc: "K. Y. Srinivasan" <kys@xxxxxxxxxxxxx>
Cc: Haiyang Zhang <haiyangz@xxxxxxxxxxxxx>
Cc: Stephen Hemminger <sthemmin@xxxxxxxxxxxxx>
Cc: devel@xxxxxxxxxxxxxxxxxxxxxx
Signed-off-by: Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx>
---

v2:
- leave uapi untouched (Christoph, Haiyang)
- rebase on top of latest linux-next

drivers/hv/channel.c | 4 +-
drivers/hv/channel_mgmt.c | 18 +++----
drivers/hv/hyperv_vmbus.h | 4 +-
drivers/hv/vmbus_drv.c | 48 +++++++------------
include/linux/hyperv.h | 98 +++++++++++++++++++--------------------
5 files changed, 79 insertions(+), 93 deletions(-)

diff --git a/drivers/hv/channel.c b/drivers/hv/channel.c
index ce0ba2062723..7f3f9994e55e 100644
--- a/drivers/hv/channel.c
+++ b/drivers/hv/channel.c
@@ -282,8 +282,8 @@ int vmbus_open(struct vmbus_channel *newchannel,
EXPORT_SYMBOL_GPL(vmbus_open);

/* Used for Hyper-V Socket: a guest client's connect() to the host */
-int vmbus_send_tl_connect_request(const uuid_le *shv_guest_servie_id,
- const uuid_le *shv_host_servie_id)
+int vmbus_send_tl_connect_request(const guid_t *shv_guest_servie_id,
+ const guid_t *shv_host_servie_id)
{
struct vmbus_channel_tl_connect_request conn_msg;
int ret;
diff --git a/drivers/hv/channel_mgmt.c b/drivers/hv/channel_mgmt.c
index d01689079e9b..62703b354d6d 100644
--- a/drivers/hv/channel_mgmt.c
+++ b/drivers/hv/channel_mgmt.c
@@ -141,7 +141,7 @@ static const struct vmbus_device vmbus_devs[] = {
};

static const struct {
- uuid_le guid;
+ guid_t guid;
} vmbus_unsupported_devs[] = {
{ HV_AVMA1_GUID },
{ HV_AVMA2_GUID },
@@ -171,26 +171,26 @@ static void vmbus_rescind_cleanup(struct vmbus_channel *channel)
spin_unlock_irqrestore(&vmbus_connection.channelmsg_lock, flags);
}

-static bool is_unsupported_vmbus_devs(const uuid_le *guid)
+static bool is_unsupported_vmbus_devs(const guid_t *guid)
{
int i;

for (i = 0; i < ARRAY_SIZE(vmbus_unsupported_devs); i++)
- if (!uuid_le_cmp(*guid, vmbus_unsupported_devs[i].guid))
+ if (guid_equal(guid, &vmbus_unsupported_devs[i].guid))
return true;
return false;
}

static u16 hv_get_dev_type(const struct vmbus_channel *channel)
{
- const uuid_le *guid = &channel->offermsg.offer.if_type;
+ const guid_t *guid = &channel->offermsg.offer.if_type;
u16 i;

if (is_hvsock_channel(channel) || is_unsupported_vmbus_devs(guid))
return HV_UNKNOWN;

for (i = HV_IDE; i < HV_UNKNOWN; i++) {
- if (!uuid_le_cmp(*guid, vmbus_devs[i].guid))
+ if (guid_equal(guid, &vmbus_devs[i].guid))
return i;
}
pr_info("Unknown GUID: %pUl\n", guid);
@@ -561,10 +561,10 @@ static void vmbus_process_offer(struct vmbus_channel *newchannel)
atomic_dec(&vmbus_connection.offer_in_progress);

list_for_each_entry(channel, &vmbus_connection.chn_list, listentry) {
- if (!uuid_le_cmp(channel->offermsg.offer.if_type,
- newchannel->offermsg.offer.if_type) &&
- !uuid_le_cmp(channel->offermsg.offer.if_instance,
- newchannel->offermsg.offer.if_instance)) {
+ if (guid_equal(&channel->offermsg.offer.if_type,
+ &newchannel->offermsg.offer.if_type) &&
+ guid_equal(&channel->offermsg.offer.if_instance,
+ &newchannel->offermsg.offer.if_instance)) {
fnew = false;
break;
}
diff --git a/drivers/hv/hyperv_vmbus.h b/drivers/hv/hyperv_vmbus.h
index a1f6ce6e5974..cb86b133eb4d 100644
--- a/drivers/hv/hyperv_vmbus.h
+++ b/drivers/hv/hyperv_vmbus.h
@@ -312,8 +312,8 @@ extern const struct vmbus_channel_message_table_entry

/* General vmbus interface */

-struct hv_device *vmbus_device_create(const uuid_le *type,
- const uuid_le *instance,
+struct hv_device *vmbus_device_create(const guid_t *type,
+ const guid_t *instance,
struct vmbus_channel *channel);

int vmbus_device_register(struct hv_device *child_device_obj);
diff --git a/drivers/hv/vmbus_drv.c b/drivers/hv/vmbus_drv.c
index 403fee01572c..126c2de39e35 100644
--- a/drivers/hv/vmbus_drv.c
+++ b/drivers/hv/vmbus_drv.c
@@ -654,38 +654,28 @@ static int vmbus_uevent(struct device *device, struct kobj_uevent_env *env)
return ret;
}

-static const uuid_le null_guid;
-
-static inline bool is_null_guid(const uuid_le *guid)
-{
- if (uuid_le_cmp(*guid, null_guid))
- return false;
- return true;
-}
-
static const struct hv_vmbus_device_id *
-hv_vmbus_dev_match(const struct hv_vmbus_device_id *id, const uuid_le *guid)
-
+hv_vmbus_dev_match(const struct hv_vmbus_device_id *id, const guid_t *guid)
{
if (id == NULL)
return NULL; /* empty device table */

- for (; !is_null_guid(&id->guid); id++)
- if (!uuid_le_cmp(id->guid, *guid))
+ for (; !guid_is_null(&id->guid); id++)
+ if (guid_equal(&id->guid, guid))
return id;

return NULL;
}

static const struct hv_vmbus_device_id *
-hv_vmbus_dynid_match(struct hv_driver *drv, const uuid_le *guid)
+hv_vmbus_dynid_match(struct hv_driver *drv, const guid_t *guid)
{
const struct hv_vmbus_device_id *id = NULL;
struct vmbus_dynid *dynid;

spin_lock(&drv->dynids.lock);
list_for_each_entry(dynid, &drv->dynids.list, node) {
- if (!uuid_le_cmp(dynid->id.guid, *guid)) {
+ if (guid_equal(&dynid->id.guid, guid)) {
id = &dynid->id;
break;
}
@@ -695,9 +685,7 @@ hv_vmbus_dynid_match(struct hv_driver *drv, const uuid_le *guid)
return id;
}

-static const struct hv_vmbus_device_id vmbus_device_null = {
- .guid = NULL_UUID_LE,
-};
+static const struct hv_vmbus_device_id vmbus_device_null;

/*
* Return a matching hv_vmbus_device_id pointer.
@@ -706,7 +694,7 @@ static const struct hv_vmbus_device_id vmbus_device_null = {
static const struct hv_vmbus_device_id *hv_vmbus_get_id(struct hv_driver *drv,
struct hv_device *dev)
{
- const uuid_le *guid = &dev->dev_type;
+ const guid_t *guid = &dev->dev_type;
const struct hv_vmbus_device_id *id;

/* When driver_override is set, only bind to the matching driver */
@@ -726,7 +714,7 @@ static const struct hv_vmbus_device_id *hv_vmbus_get_id(struct hv_driver *drv,
}

/* vmbus_add_dynid - add a new device ID to this driver and re-probe devices */
-static int vmbus_add_dynid(struct hv_driver *drv, uuid_le *guid)
+static int vmbus_add_dynid(struct hv_driver *drv, guid_t *guid)
{
struct vmbus_dynid *dynid;

@@ -764,10 +752,10 @@ static ssize_t new_id_store(struct device_driver *driver, const char *buf,
size_t count)
{
struct hv_driver *drv = drv_to_hv_drv(driver);
- uuid_le guid;
+ guid_t guid;
ssize_t retval;

- retval = uuid_le_to_bin(buf, &guid);
+ retval = guid_parse(buf, &guid);
if (retval)
return retval;

@@ -791,10 +779,10 @@ static ssize_t remove_id_store(struct device_driver *driver, const char *buf,
{
struct hv_driver *drv = drv_to_hv_drv(driver);
struct vmbus_dynid *dynid, *n;
- uuid_le guid;
+ guid_t guid;
ssize_t retval;

- retval = uuid_le_to_bin(buf, &guid);
+ retval = guid_parse(buf, &guid);
if (retval)
return retval;

@@ -803,7 +791,7 @@ static ssize_t remove_id_store(struct device_driver *driver, const char *buf,
list_for_each_entry_safe(dynid, n, &drv->dynids.list, node) {
struct hv_vmbus_device_id *id = &dynid->id;

- if (!uuid_le_cmp(id->guid, guid)) {
+ if (guid_equal(&id->guid, &guid)) {
list_del(&dynid->node);
kfree(dynid);
retval = count;
@@ -1556,8 +1544,8 @@ int vmbus_add_channel_kobj(struct hv_device *dev, struct vmbus_channel *channel)
* vmbus_device_create - Creates and registers a new child device
* on the vmbus.
*/
-struct hv_device *vmbus_device_create(const uuid_le *type,
- const uuid_le *instance,
+struct hv_device *vmbus_device_create(const guid_t *type,
+ const guid_t *instance,
struct vmbus_channel *channel)
{
struct hv_device *child_device_obj;
@@ -1569,12 +1557,10 @@ struct hv_device *vmbus_device_create(const uuid_le *type,
}

child_device_obj->channel = channel;
- memcpy(&child_device_obj->dev_type, type, sizeof(uuid_le));
- memcpy(&child_device_obj->dev_instance, instance,
- sizeof(uuid_le));
+ guid_copy(&child_device_obj->dev_type, type);
+ guid_copy(&child_device_obj->dev_instance, instance);
child_device_obj->vendor_id = 0x1414; /* MSFT vendor ID */

-
return child_device_obj;
}

diff --git a/include/linux/hyperv.h b/include/linux/hyperv.h
index dcb6977afce9..d5678a0fe598 100644
--- a/include/linux/hyperv.h
+++ b/include/linux/hyperv.h
@@ -222,8 +222,8 @@ static inline u32 hv_get_avail_to_write_percent(
* struct contains the fundamental information about an offer.
*/
struct vmbus_channel_offer {
- uuid_le if_type;
- uuid_le if_instance;
+ guid_t if_type;
+ guid_t if_instance;

/*
* These two fields are not currently used.
@@ -614,8 +614,8 @@ struct vmbus_channel_initiate_contact {
/* Hyper-V socket: guest's connect()-ing to host */
struct vmbus_channel_tl_connect_request {
struct vmbus_channel_message_header header;
- uuid_le guest_endpoint_id;
- uuid_le host_service_id;
+ guid_t guest_endpoint_id;
+ guid_t host_service_id;
} __packed;

struct vmbus_channel_version_response {
@@ -714,7 +714,7 @@ enum vmbus_device_type {

struct vmbus_device {
u16 dev_type;
- uuid_le guid;
+ guid_t guid;
bool perf_device;
};

@@ -1096,7 +1096,7 @@ struct hv_driver {
bool hvsock;

/* the device type supported by this driver */
- uuid_le dev_type;
+ guid_t dev_type;
const struct hv_vmbus_device_id *id_table;

struct device_driver driver;
@@ -1116,10 +1116,10 @@ struct hv_driver {
/* Base device object */
struct hv_device {
/* the device type id of this device */
- uuid_le dev_type;
+ guid_t dev_type;

/* the device instance id of this device */
- uuid_le dev_instance;
+ guid_t dev_instance;
u16 vendor_id;
u16 device_id;

@@ -1188,102 +1188,102 @@ void vmbus_free_mmio(resource_size_t start, resource_size_t size);
* {f8615163-df3e-46c5-913f-f2d2f965ed0e}
*/
#define HV_NIC_GUID \
- .guid = UUID_LE(0xf8615163, 0xdf3e, 0x46c5, 0x91, 0x3f, \
- 0xf2, 0xd2, 0xf9, 0x65, 0xed, 0x0e)
+ .guid = GUID_INIT(0xf8615163, 0xdf3e, 0x46c5, 0x91, 0x3f, \
+ 0xf2, 0xd2, 0xf9, 0x65, 0xed, 0x0e)

/*
* IDE GUID
* {32412632-86cb-44a2-9b5c-50d1417354f5}
*/
#define HV_IDE_GUID \
- .guid = UUID_LE(0x32412632, 0x86cb, 0x44a2, 0x9b, 0x5c, \
- 0x50, 0xd1, 0x41, 0x73, 0x54, 0xf5)
+ .guid = GUID_INIT(0x32412632, 0x86cb, 0x44a2, 0x9b, 0x5c, \
+ 0x50, 0xd1, 0x41, 0x73, 0x54, 0xf5)

/*
* SCSI GUID
* {ba6163d9-04a1-4d29-b605-72e2ffb1dc7f}
*/
#define HV_SCSI_GUID \
- .guid = UUID_LE(0xba6163d9, 0x04a1, 0x4d29, 0xb6, 0x05, \
- 0x72, 0xe2, 0xff, 0xb1, 0xdc, 0x7f)
+ .guid = GUID_INIT(0xba6163d9, 0x04a1, 0x4d29, 0xb6, 0x05, \
+ 0x72, 0xe2, 0xff, 0xb1, 0xdc, 0x7f)

/*
* Shutdown GUID
* {0e0b6031-5213-4934-818b-38d90ced39db}
*/
#define HV_SHUTDOWN_GUID \
- .guid = UUID_LE(0x0e0b6031, 0x5213, 0x4934, 0x81, 0x8b, \
- 0x38, 0xd9, 0x0c, 0xed, 0x39, 0xdb)
+ .guid = GUID_INIT(0x0e0b6031, 0x5213, 0x4934, 0x81, 0x8b, \
+ 0x38, 0xd9, 0x0c, 0xed, 0x39, 0xdb)

/*
* Time Synch GUID
* {9527E630-D0AE-497b-ADCE-E80AB0175CAF}
*/
#define HV_TS_GUID \
- .guid = UUID_LE(0x9527e630, 0xd0ae, 0x497b, 0xad, 0xce, \
- 0xe8, 0x0a, 0xb0, 0x17, 0x5c, 0xaf)
+ .guid = GUID_INIT(0x9527e630, 0xd0ae, 0x497b, 0xad, 0xce, \
+ 0xe8, 0x0a, 0xb0, 0x17, 0x5c, 0xaf)

/*
* Heartbeat GUID
* {57164f39-9115-4e78-ab55-382f3bd5422d}
*/
#define HV_HEART_BEAT_GUID \
- .guid = UUID_LE(0x57164f39, 0x9115, 0x4e78, 0xab, 0x55, \
- 0x38, 0x2f, 0x3b, 0xd5, 0x42, 0x2d)
+ .guid = GUID_INIT(0x57164f39, 0x9115, 0x4e78, 0xab, 0x55, \
+ 0x38, 0x2f, 0x3b, 0xd5, 0x42, 0x2d)

/*
* KVP GUID
* {a9a0f4e7-5a45-4d96-b827-8a841e8c03e6}
*/
#define HV_KVP_GUID \
- .guid = UUID_LE(0xa9a0f4e7, 0x5a45, 0x4d96, 0xb8, 0x27, \
- 0x8a, 0x84, 0x1e, 0x8c, 0x03, 0xe6)
+ .guid = GUID_INIT(0xa9a0f4e7, 0x5a45, 0x4d96, 0xb8, 0x27, \
+ 0x8a, 0x84, 0x1e, 0x8c, 0x03, 0xe6)

/*
* Dynamic memory GUID
* {525074dc-8985-46e2-8057-a307dc18a502}
*/
#define HV_DM_GUID \
- .guid = UUID_LE(0x525074dc, 0x8985, 0x46e2, 0x80, 0x57, \
- 0xa3, 0x07, 0xdc, 0x18, 0xa5, 0x02)
+ .guid = GUID_INIT(0x525074dc, 0x8985, 0x46e2, 0x80, 0x57, \
+ 0xa3, 0x07, 0xdc, 0x18, 0xa5, 0x02)

/*
* Mouse GUID
* {cfa8b69e-5b4a-4cc0-b98b-8ba1a1f3f95a}
*/
#define HV_MOUSE_GUID \
- .guid = UUID_LE(0xcfa8b69e, 0x5b4a, 0x4cc0, 0xb9, 0x8b, \
- 0x8b, 0xa1, 0xa1, 0xf3, 0xf9, 0x5a)
+ .guid = GUID_INIT(0xcfa8b69e, 0x5b4a, 0x4cc0, 0xb9, 0x8b, \
+ 0x8b, 0xa1, 0xa1, 0xf3, 0xf9, 0x5a)

/*
* Keyboard GUID
* {f912ad6d-2b17-48ea-bd65-f927a61c7684}
*/
#define HV_KBD_GUID \
- .guid = UUID_LE(0xf912ad6d, 0x2b17, 0x48ea, 0xbd, 0x65, \
- 0xf9, 0x27, 0xa6, 0x1c, 0x76, 0x84)
+ .guid = GUID_INIT(0xf912ad6d, 0x2b17, 0x48ea, 0xbd, 0x65, \
+ 0xf9, 0x27, 0xa6, 0x1c, 0x76, 0x84)

/*
* VSS (Backup/Restore) GUID
*/
#define HV_VSS_GUID \
- .guid = UUID_LE(0x35fa2e29, 0xea23, 0x4236, 0x96, 0xae, \
- 0x3a, 0x6e, 0xba, 0xcb, 0xa4, 0x40)
+ .guid = GUID_INIT(0x35fa2e29, 0xea23, 0x4236, 0x96, 0xae, \
+ 0x3a, 0x6e, 0xba, 0xcb, 0xa4, 0x40)
/*
* Synthetic Video GUID
* {DA0A7802-E377-4aac-8E77-0558EB1073F8}
*/
#define HV_SYNTHVID_GUID \
- .guid = UUID_LE(0xda0a7802, 0xe377, 0x4aac, 0x8e, 0x77, \
- 0x05, 0x58, 0xeb, 0x10, 0x73, 0xf8)
+ .guid = GUID_INIT(0xda0a7802, 0xe377, 0x4aac, 0x8e, 0x77, \
+ 0x05, 0x58, 0xeb, 0x10, 0x73, 0xf8)

/*
* Synthetic FC GUID
* {2f9bcc4a-0069-4af3-b76b-6fd0be528cda}
*/
#define HV_SYNTHFC_GUID \
- .guid = UUID_LE(0x2f9bcc4a, 0x0069, 0x4af3, 0xb7, 0x6b, \
- 0x6f, 0xd0, 0xbe, 0x52, 0x8c, 0xda)
+ .guid = GUID_INIT(0x2f9bcc4a, 0x0069, 0x4af3, 0xb7, 0x6b, \
+ 0x6f, 0xd0, 0xbe, 0x52, 0x8c, 0xda)

/*
* Guest File Copy Service
@@ -1291,16 +1291,16 @@ void vmbus_free_mmio(resource_size_t start, resource_size_t size);
*/

#define HV_FCOPY_GUID \
- .guid = UUID_LE(0x34d14be3, 0xdee4, 0x41c8, 0x9a, 0xe7, \
- 0x6b, 0x17, 0x49, 0x77, 0xc1, 0x92)
+ .guid = GUID_INIT(0x34d14be3, 0xdee4, 0x41c8, 0x9a, 0xe7, \
+ 0x6b, 0x17, 0x49, 0x77, 0xc1, 0x92)

/*
* NetworkDirect. This is the guest RDMA service.
* {8c2eaf3d-32a7-4b09-ab99-bd1f1c86b501}
*/
#define HV_ND_GUID \
- .guid = UUID_LE(0x8c2eaf3d, 0x32a7, 0x4b09, 0xab, 0x99, \
- 0xbd, 0x1f, 0x1c, 0x86, 0xb5, 0x01)
+ .guid = GUID_INIT(0x8c2eaf3d, 0x32a7, 0x4b09, 0xab, 0x99, \
+ 0xbd, 0x1f, 0x1c, 0x86, 0xb5, 0x01)

/*
* PCI Express Pass Through
@@ -1308,8 +1308,8 @@ void vmbus_free_mmio(resource_size_t start, resource_size_t size);
*/

#define HV_PCIE_GUID \
- .guid = UUID_LE(0x44c4f61d, 0x4444, 0x4400, 0x9d, 0x52, \
- 0x80, 0x2e, 0x27, 0xed, 0xe1, 0x9f)
+ .guid = GUID_INIT(0x44c4f61d, 0x4444, 0x4400, 0x9d, 0x52, \
+ 0x80, 0x2e, 0x27, 0xed, 0xe1, 0x9f)

/*
* Linux doesn't support the 3 devices: the first two are for
@@ -1321,16 +1321,16 @@ void vmbus_free_mmio(resource_size_t start, resource_size_t size);
*/

#define HV_AVMA1_GUID \
- .guid = UUID_LE(0xf8e65716, 0x3cb3, 0x4a06, 0x9a, 0x60, \
- 0x18, 0x89, 0xc5, 0xcc, 0xca, 0xb5)
+ .guid = GUID_INIT(0xf8e65716, 0x3cb3, 0x4a06, 0x9a, 0x60, \
+ 0x18, 0x89, 0xc5, 0xcc, 0xca, 0xb5)

#define HV_AVMA2_GUID \
- .guid = UUID_LE(0x3375baf4, 0x9e15, 0x4b30, 0xb7, 0x65, \
- 0x67, 0xac, 0xb1, 0x0d, 0x60, 0x7b)
+ .guid = GUID_INIT(0x3375baf4, 0x9e15, 0x4b30, 0xb7, 0x65, \
+ 0x67, 0xac, 0xb1, 0x0d, 0x60, 0x7b)

#define HV_RDV_GUID \
- .guid = UUID_LE(0x276aacf4, 0xac15, 0x426c, 0x98, 0xdd, \
- 0x75, 0x21, 0xad, 0x3f, 0x01, 0xfe)
+ .guid = GUID_INIT(0x276aacf4, 0xac15, 0x426c, 0x98, 0xdd, \
+ 0x75, 0x21, 0xad, 0x3f, 0x01, 0xfe)

/*
* Common header for Hyper-V ICs
@@ -1432,7 +1432,7 @@ struct ictimesync_ref_data {
struct hyperv_service_callback {
u8 msg_type;
char *log_msg;
- uuid_le data;
+ guid_t data;
struct vmbus_channel *channel;
void (*callback)(void *context);
};
@@ -1452,8 +1452,8 @@ void vmbus_setevent(struct vmbus_channel *channel);

extern __u32 vmbus_proto_version;

-int vmbus_send_tl_connect_request(const uuid_le *shv_guest_servie_id,
- const uuid_le *shv_host_servie_id);
+int vmbus_send_tl_connect_request(const guid_t *shv_guest_servie_id,
+ const guid_t *shv_host_servie_id);
void vmbus_set_event(struct vmbus_channel *channel);

/* Get the start of the ring buffer. */
--
2.20.1