diff mbox series

[net-next,V2,09/15] net/mlx5: Refactor completion irq request/release code

Message ID 20230324231341.29808-10-saeed@kernel.org (mailing list archive)
State Accepted
Commit b48a0f72bc3e5b10f55b3d40f051135fc9afd0e5
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 warning WARNING: line length of 83 exceeds 80 columns WARNING: line length of 85 exceeds 80 columns
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>

Break the request and release functions into pci and sub-functions
devices handling for better readability, eventually making the code
symmetric in terms of request/release.

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>
---
 drivers/net/ethernet/mellanox/mlx5/core/eq.c | 70 +++++++++++++-------
 1 file changed, 46 insertions(+), 24 deletions(-)
diff mbox series

Patch

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/eq.c b/drivers/net/ethernet/mellanox/mlx5/core/eq.c
index b43121f64a80..ed75b527280e 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/eq.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/eq.c
@@ -804,44 +804,28 @@  void mlx5_eq_update_ci(struct mlx5_eq *eq, u32 cc, bool arm)
 }
 EXPORT_SYMBOL(mlx5_eq_update_ci);
 
-static void comp_irqs_release(struct mlx5_core_dev *dev)
+static void comp_irqs_release_pci(struct mlx5_core_dev *dev)
 {
 	struct mlx5_eq_table *table = dev->priv.eq_table;
 
-	if (mlx5_core_is_sf(dev))
-		mlx5_irq_affinity_irqs_release(dev, table->comp_irqs, table->num_comp_eqs);
-	else
-		mlx5_irqs_release_vectors(table->comp_irqs, table->num_comp_eqs);
-	kfree(table->comp_irqs);
+	mlx5_irqs_release_vectors(table->comp_irqs, table->num_comp_eqs);
 }
 
-static int comp_irqs_request(struct mlx5_core_dev *dev)
+static int comp_irqs_request_pci(struct mlx5_core_dev *dev)
 {
 	struct mlx5_eq_table *table = dev->priv.eq_table;
 	const struct cpumask *prev = cpu_none_mask;
 	const struct cpumask *mask;
-	int ncomp_eqs = table->num_comp_eqs;
+	int ncomp_eqs;
 	u16 *cpus;
 	int ret;
 	int cpu;
 	int i;
 
 	ncomp_eqs = table->num_comp_eqs;
-	table->comp_irqs = kcalloc(ncomp_eqs, sizeof(*table->comp_irqs), GFP_KERNEL);
-	if (!table->comp_irqs)
-		return -ENOMEM;
-	if (mlx5_core_is_sf(dev)) {
-		ret = mlx5_irq_affinity_irqs_request_auto(dev, ncomp_eqs, table->comp_irqs);
-		if (ret < 0)
-			goto free_irqs;
-		return ret;
-	}
-
 	cpus = kcalloc(ncomp_eqs, sizeof(*cpus), GFP_KERNEL);
-	if (!cpus) {
+	if (!cpus)
 		ret = -ENOMEM;
-		goto free_irqs;
-	}
 
 	i = 0;
 	rcu_read_lock();
@@ -857,12 +841,50 @@  static int comp_irqs_request(struct mlx5_core_dev *dev)
 	rcu_read_unlock();
 	ret = mlx5_irqs_request_vectors(dev, cpus, ncomp_eqs, table->comp_irqs);
 	kfree(cpus);
-	if (ret < 0)
-		goto free_irqs;
 	return ret;
+}
+
+static void comp_irqs_release_sf(struct mlx5_core_dev *dev)
+{
+	struct mlx5_eq_table *table = dev->priv.eq_table;
+
+	mlx5_irq_affinity_irqs_release(dev, table->comp_irqs, table->num_comp_eqs);
+}
+
+static int comp_irqs_request_sf(struct mlx5_core_dev *dev)
+{
+	struct mlx5_eq_table *table = dev->priv.eq_table;
+	int ncomp_eqs = table->num_comp_eqs;
+
+	return mlx5_irq_affinity_irqs_request_auto(dev, ncomp_eqs, table->comp_irqs);
+}
+
+static void comp_irqs_release(struct mlx5_core_dev *dev)
+{
+	struct mlx5_eq_table *table = dev->priv.eq_table;
+
+	mlx5_core_is_sf(dev) ? comp_irqs_release_sf(dev) :
+			       comp_irqs_release_pci(dev);
 
-free_irqs:
 	kfree(table->comp_irqs);
+}
+
+static int comp_irqs_request(struct mlx5_core_dev *dev)
+{
+	struct mlx5_eq_table *table = dev->priv.eq_table;
+	int ncomp_eqs;
+	int ret;
+
+	ncomp_eqs = table->num_comp_eqs;
+	table->comp_irqs = kcalloc(ncomp_eqs, sizeof(*table->comp_irqs), GFP_KERNEL);
+	if (!table->comp_irqs)
+		return -ENOMEM;
+
+	ret = mlx5_core_is_sf(dev) ? comp_irqs_request_sf(dev) :
+				     comp_irqs_request_pci(dev);
+	if (ret < 0)
+		kfree(table->comp_irqs);
+
 	return ret;
 }