diff mbox series

[net-next,V2,06/15] net/mlx5: Modify struct mlx5_irq to use struct msi_map

Message ID 20230324231341.29808-7-saeed@kernel.org (mailing list archive)
State Accepted
Commit 235a25fe28deb5558a500c9f9af4ff3b4797b86c
Delegated to: Netdev Maintainers
Headers show
Series [net-next,V2,01/15] lib: cpu_rmap: Avoid use after free on rmap->obj array entries | expand

Checks

Context Check Description
netdev/series_format success Pull request is its own cover letter
netdev/tree_selection success Clearly marked for net-next
netdev/fixes_present success Fixes tag not required for -next series
netdev/header_inline success No static functions without inline keyword in header files
netdev/build_32bit success Errors and warnings before: 18 this patch: 18
netdev/cc_maintainers success CCed 5 of 5 maintainers
netdev/build_clang success Errors and warnings before: 18 this patch: 18
netdev/verify_signedoff success Signed-off-by tag matches author and committer
netdev/deprecated_api success None detected
netdev/check_selftest success No net selftest shell script
netdev/verify_fixes success No Fixes tag
netdev/build_allmodconfig_warn success Errors and warnings before: 18 this patch: 18
netdev/checkpatch success total: 0 errors, 0 warnings, 0 checks, 95 lines checked
netdev/kdoc success Errors and warnings before: 0 this patch: 0
netdev/source_inline success Was 0 now: 0

Commit Message

Saeed Mahameed March 24, 2023, 11:13 p.m. UTC 
From: Eli Cohen <elic@nvidia.com>

Use the standard struct msi_map to store the vector number and irq
number pair in struct mlx5_irq.

Signed-off-by: Eli Cohen <elic@nvidia.com>
Reviewed-by: Shay Drory <shayd@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
Reviewed-by: Jacob Keller <jacob.e.keller@intel.com>
---
 .../net/ethernet/mellanox/mlx5/core/pci_irq.c | 31 +++++++++----------
 1 file changed, 15 insertions(+), 16 deletions(-)
diff mbox series

Patch

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/pci_irq.c b/drivers/net/ethernet/mellanox/mlx5/core/pci_irq.c
index c72736f1571f..c79775d0ac24 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/pci_irq.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/pci_irq.c
@@ -29,8 +29,7 @@  struct mlx5_irq {
 	char name[MLX5_MAX_IRQ_NAME];
 	struct mlx5_irq_pool *pool;
 	int refcount;
-	u32 index;
-	int irqn;
+	struct msi_map map;
 };
 
 struct mlx5_irq_table {
@@ -128,14 +127,14 @@  static void irq_release(struct mlx5_irq *irq)
 {
 	struct mlx5_irq_pool *pool = irq->pool;
 
-	xa_erase(&pool->irqs, irq->index);
+	xa_erase(&pool->irqs, irq->map.index);
 	/* free_irq requires that affinity_hint and rmap will be cleared
 	 * before calling it. This is why there is asymmetry with set_rmap
 	 * which should be called after alloc_irq but before request_irq.
 	 */
-	irq_update_affinity_hint(irq->irqn, NULL);
+	irq_update_affinity_hint(irq->map.virq, NULL);
 	free_cpumask_var(irq->mask);
-	free_irq(irq->irqn, &irq->nh);
+	free_irq(irq->map.virq, &irq->nh);
 	kfree(irq);
 }
 
@@ -217,7 +216,7 @@  struct mlx5_irq *mlx5_irq_alloc(struct mlx5_irq_pool *pool, int i,
 	irq = kzalloc(sizeof(*irq), GFP_KERNEL);
 	if (!irq)
 		return ERR_PTR(-ENOMEM);
-	irq->irqn = pci_irq_vector(dev->pdev, i);
+	irq->map.virq = pci_irq_vector(dev->pdev, i);
 	if (!mlx5_irq_pool_is_sf_pool(pool))
 		irq_set_name(pool, name, i);
 	else
@@ -225,7 +224,7 @@  struct mlx5_irq *mlx5_irq_alloc(struct mlx5_irq_pool *pool, int i,
 	ATOMIC_INIT_NOTIFIER_HEAD(&irq->nh);
 	snprintf(irq->name, MLX5_MAX_IRQ_NAME,
 		 "%s@pci:%s", name, pci_name(dev->pdev));
-	err = request_irq(irq->irqn, irq_int_handler, 0, irq->name,
+	err = request_irq(irq->map.virq, irq_int_handler, 0, irq->name,
 			  &irq->nh);
 	if (err) {
 		mlx5_core_err(dev, "Failed to request irq. err = %d\n", err);
@@ -238,23 +237,23 @@  struct mlx5_irq *mlx5_irq_alloc(struct mlx5_irq_pool *pool, int i,
 	}
 	if (affinity) {
 		cpumask_copy(irq->mask, affinity);
-		irq_set_affinity_and_hint(irq->irqn, irq->mask);
+		irq_set_affinity_and_hint(irq->map.virq, irq->mask);
 	}
 	irq->pool = pool;
 	irq->refcount = 1;
-	irq->index = i;
-	err = xa_err(xa_store(&pool->irqs, irq->index, irq, GFP_KERNEL));
+	irq->map.index = i;
+	err = xa_err(xa_store(&pool->irqs, irq->map.index, irq, GFP_KERNEL));
 	if (err) {
 		mlx5_core_err(dev, "Failed to alloc xa entry for irq(%u). err = %d\n",
-			      irq->index, err);
+			      irq->map.index, err);
 		goto err_xa;
 	}
 	return irq;
 err_xa:
-	irq_update_affinity_hint(irq->irqn, NULL);
+	irq_update_affinity_hint(irq->map.virq, NULL);
 	free_cpumask_var(irq->mask);
 err_cpumask:
-	free_irq(irq->irqn, &irq->nh);
+	free_irq(irq->map.virq, &irq->nh);
 err_req_irq:
 	kfree(irq);
 	return ERR_PTR(err);
@@ -292,7 +291,7 @@  struct cpumask *mlx5_irq_get_affinity_mask(struct mlx5_irq *irq)
 
 int mlx5_irq_get_index(struct mlx5_irq *irq)
 {
-	return irq->index;
+	return irq->map.index;
 }
 
 /* irq_pool API */
@@ -364,7 +363,7 @@  static void mlx5_irqs_release(struct mlx5_irq **irqs, int nirqs)
 	int i;
 
 	for (i = 0; i < nirqs; i++) {
-		synchronize_irq(irqs[i]->irqn);
+		synchronize_irq(irqs[i]->map.virq);
 		mlx5_irq_put(irqs[i]);
 	}
 }
@@ -433,7 +432,7 @@  struct mlx5_irq *mlx5_irq_request(struct mlx5_core_dev *dev, u16 vecidx,
 	if (IS_ERR(irq))
 		return irq;
 	mlx5_core_dbg(dev, "irq %u mapped to cpu %*pbl, %u EQs on this irq\n",
-		      irq->irqn, cpumask_pr_args(affinity),
+		      irq->map.virq, cpumask_pr_args(affinity),
 		      irq->refcount / MLX5_EQ_REFS_PER_IRQ);
 	return irq;
 }