[PATCH net-next 02/15] net: enetc: move msg_task and msg_int_name to struct enetc_si

[wei . fang]

From: Wei Fang <wei.fang@xxxxxxx>

The ENETC PF currently uses msg_task and msg_int_name in struct enetc_pf
to handle VSI-to-PSI mailbox messages via a workqueue and a dedicated
interrupt.

PSI-to-VSI message support will be added to the VF driver, which will
require the same mechanism: a message interrupt and a workqueue handler.
Since struct enetc_si is the common structure shared between PF and VF,
move msg_task and msg_int_name from struct enetc_pf to struct enetc_si
to allow both drivers to use them without duplication.

Also relocate the ENETC_INT_NAME_MAX macro definition ahead of struct
enetc_si so it can be used for the msg_int_name array declaration.

Signed-off-by: Wei Fang <wei.fang@xxxxxxx>
---
 drivers/net/ethernet/freescale/enetc/enetc.h  |  5 ++++-
 .../net/ethernet/freescale/enetc/enetc_msg.c  | 19 ++++++++++---------
 .../net/ethernet/freescale/enetc/enetc_pf.h   |  3 ---
 3 files changed, 14 insertions(+), 13 deletions(-)

diff --git a/drivers/net/ethernet/freescale/enetc/enetc.h b/drivers/net/ethernet/freescale/enetc/enetc.h
index 04a5dd5ea6c7..2cd035773aca 100644
--- a/drivers/net/ethernet/freescale/enetc/enetc.h
+++ b/drivers/net/ethernet/freescale/enetc/enetc.h
@@ -25,6 +25,7 @@
 #define ENETC_CBD_DATA_MEM_ALIGN 64
 
 #define ENETC_MADDR_HASH_TBL_SZ	64
+#define ENETC_INT_NAME_MAX	(IFNAMSIZ + 8)
 
 enum enetc_mac_addr_type {UC, MC, MADDR_TYPE};
 
@@ -328,6 +329,9 @@ struct enetc_si {
 	struct work_struct rx_mode_task;
 	struct dentry *debugfs_root;
 	struct enetc_msg_swbd msg; /* Only valid for VSI */
+
+	struct work_struct msg_task;
+	char msg_int_name[ENETC_INT_NAME_MAX];
 };
 
 #define ENETC_SI_ALIGN	32
@@ -369,7 +373,6 @@ static inline bool enetc_is_pseudo_mac(struct enetc_si *si)
 }
 
 #define ENETC_MAX_NUM_TXQS	8
-#define ENETC_INT_NAME_MAX	(IFNAMSIZ + 8)
 
 struct enetc_int_vector {
 	void __iomem *rbier;
diff --git a/drivers/net/ethernet/freescale/enetc/enetc_msg.c b/drivers/net/ethernet/freescale/enetc/enetc_msg.c
index 156333ef26bf..8d4d0689807d 100644
--- a/drivers/net/ethernet/freescale/enetc/enetc_msg.c
+++ b/drivers/net/ethernet/freescale/enetc/enetc_msg.c
@@ -37,7 +37,7 @@ static irqreturn_t enetc_msg_psi_msix(int irq, void *data)
 	struct enetc_pf *pf = enetc_si_priv(si);
 
 	enetc_msg_disable_mr_int(pf);
-	schedule_work(&pf->msg_task);
+	schedule_work(&si->msg_task);
 
 	return IRQ_HANDLED;
 }
@@ -215,12 +215,13 @@ static void enetc_msg_handle_rxmsg(struct enetc_pf *pf, int vf_id,
 
 static void enetc_msg_task(struct work_struct *work)
 {
-	struct enetc_pf *pf = container_of(work, struct enetc_pf, msg_task);
-	u32 mr_mask = ENETC_PSIMR_MASK(pf->num_vfs);
-	struct enetc_hw *hw = &pf->si->hw;
-	u32 mr_status;
+	struct enetc_si *si = container_of(work, struct enetc_si, msg_task);
+	struct enetc_pf *pf = enetc_si_priv(si);
+	struct enetc_hw *hw = &si->hw;
+	u32 mr_status, mr_mask;
 	int i;
 
+	mr_mask = ENETC_PSIMR_MASK(pf->num_vfs);
 	mr_status = (enetc_rd(hw, ENETC_PSIMSGRR) & mr_mask) |
 		    (enetc_rd(hw, ENETC_PSIIDR) & mr_mask);
 	if (!mr_status)
@@ -303,13 +304,13 @@ static int enetc_msg_psi_init(struct enetc_pf *pf)
 	}
 
 	/* initialize PSI mailbox */
-	INIT_WORK(&pf->msg_task, enetc_msg_task);
+	INIT_WORK(&si->msg_task, enetc_msg_task);
 
 	/* register message passing interrupt handler */
-	snprintf(pf->msg_int_name, sizeof(pf->msg_int_name), "%s-vfmsg",
+	snprintf(si->msg_int_name, sizeof(si->msg_int_name), "%s-vfmsg",
 		 si->ndev->name);
 	vector = pci_irq_vector(si->pdev, ENETC_SI_INT_IDX);
-	err = request_irq(vector, enetc_msg_psi_msix, 0, pf->msg_int_name, si);
+	err = request_irq(vector, enetc_msg_psi_msix, 0, si->msg_int_name, si);
 	if (err) {
 		dev_err(&si->pdev->dev,
 			"PSI messaging: request_irq() failed!\n");
@@ -342,7 +343,7 @@ static void enetc_msg_psi_free(struct enetc_pf *pf)
 	/* de-register message passing interrupt handler */
 	free_irq(pci_irq_vector(si->pdev, ENETC_SI_INT_IDX), si);
 
-	cancel_work_sync(&pf->msg_task);
+	cancel_work_sync(&si->msg_task);
 
 	/* MR interrupts may be re-enabled by workqueue */
 	enetc_msg_disable_mr_int(pf);
diff --git a/drivers/net/ethernet/freescale/enetc/enetc_pf.h b/drivers/net/ethernet/freescale/enetc/enetc_pf.h
index eb977da2be71..07bb9aab89aa 100644
--- a/drivers/net/ethernet/freescale/enetc/enetc_pf.h
+++ b/drivers/net/ethernet/freescale/enetc/enetc_pf.h
@@ -43,10 +43,7 @@ struct enetc_pf {
 	struct enetc_vf_state *vf_state;
 
 	struct enetc_mac_filter mac_filter[MADDR_TYPE];
-
 	struct enetc_msg_swbd *rxmsg;
-	struct work_struct msg_task;
-	char msg_int_name[ENETC_INT_NAME_MAX];
 
 	char vlan_promisc_simap; /* bitmap of SIs in VLAN promisc mode */
 	DECLARE_BITMAP(vlan_ht_filter, ENETC_VLAN_HT_SIZE);
-- 
2.34.1