Merge tag 'mlx5-updates-2023-08-07' of git://git.kernel.org/pub/scm/linux/kernel/git/saeed/linux

Saeed Mahameed says:

====================
mlx5-updates-2023-08-07

1) Few cleanups

2) Dynamic completion EQs

The driver creates completion EQs for all vectors directly on driver
load, even if those EQs will not be utilized later on.

To allow more flexibility in managing completion EQs and to reduce the
memory overhead of driver load, this series will adjust completion EQs
creation to be dynamic. Meaning, completion EQs will be created only
when needed.

Patch #1 introduces a counter for tracking the current number of
completion EQs.
Patches #2-6 refactor the existing infrastructure of managing completion
EQs and completion IRQs to be compatible with per-vector
allocation/release requests.
Patches #7-8 modify the CPU-to-IRQ affinity calculation to be resilient
in case the affinity is requested but completion IRQ is not allocated yet.
Patch #9 function rename.
Patch #10 handles the corner case of SF performing an IRQ request when no
SF IRQ pool is found, and no PF IRQ exists for the same vector.
Patch #11 modify driver to use dynamically allocate completion EQs.

* tag 'mlx5-updates-2023-08-07' of git://git.kernel.org/pub/scm/linux/kernel/git/saeed/linux:
  net/mlx5: Bridge, Only handle registered netdev bridge events
  net/mlx5: E-Switch, Remove redundant arg ignore_flow_lvl
  net/mlx5: Fix typo reminder -> remainder
  net/mlx5: remove many unnecessary NULL values
  net/mlx5: Allocate completion EQs dynamically
  net/mlx5: Handle SF IRQ request in the absence of SF IRQ pool
  net/mlx5: Rename mlx5_comp_vectors_count() to mlx5_comp_vectors_max()
  net/mlx5: Add IRQ vector to CPU lookup function
  net/mlx5: Introduce mlx5_cpumask_default_spread
  net/mlx5: Implement single completion EQ create/destroy methods
  net/mlx5: Use xarray to store and manage completion EQs
  net/mlx5: Refactor completion IRQ request/release handlers in EQ layer
  net/mlx5: Use xarray to store and manage completion IRQs
  net/mlx5: Refactor completion IRQ request/release API
  net/mlx5: Track the current number of completion EQs
====================

Link: https://lore.kernel.org/r/20230807175642.20834-1-saeed@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

1 files changed, 5 insertions, 5 deletions

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_main.c b/drivers/net/ethernet/mellanox/mlx5/core/en_main.c
index ca80c220e4b0..61a5ddd6e585 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_main.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_main.c
@@ -1989,7 +1989,7 @@ static int mlx5e_create_cq(struct mlx5e_cq *cq, struct mlx5e_cq_param *param)
 	int eqn;
 	int err;
 
-	err = mlx5_vector2eqn(mdev, param->eq_ix, &eqn);
+	err = mlx5_comp_eqn_get(mdev, param->eq_ix, &eqn);
 	if (err)
 		return err;
 
@@ -2445,14 +2445,14 @@ static int mlx5e_open_channel(struct mlx5e_priv *priv, int ix,
 			      struct xsk_buff_pool *xsk_pool,
 			      struct mlx5e_channel **cp)
 {
-	int cpu = cpumask_first(mlx5_comp_irq_get_affinity_mask(priv->mdev, ix));
+	int cpu = mlx5_comp_vector_get_cpu(priv->mdev, ix);
 	struct net_device *netdev = priv->netdev;
 	struct mlx5e_xsk_param xsk;
 	struct mlx5e_channel *c;
 	unsigned int irq;
 	int err;
 
-	err = mlx5_vector2irqn(priv->mdev, ix, &irq);
+	err = mlx5_comp_irqn_get(priv->mdev, ix, &irq);
 	if (err)
 		return err;
 
@@ -2856,13 +2856,13 @@ static void mlx5e_set_default_xps_cpumasks(struct mlx5e_priv *priv,
 	struct mlx5_core_dev *mdev = priv->mdev;
 	int num_comp_vectors, ix, irq;
 
-	num_comp_vectors = mlx5_comp_vectors_count(mdev);
+	num_comp_vectors = mlx5_comp_vectors_max(mdev);
 
 	for (ix = 0; ix < params->num_channels; ix++) {
 		cpumask_clear(priv->scratchpad.cpumask);
 
 		for (irq = ix; irq < num_comp_vectors; irq += params->num_channels) {
-			int cpu = cpumask_first(mlx5_comp_irq_get_affinity_mask(mdev, irq));
+			int cpu = mlx5_comp_vector_get_cpu(mdev, irq);
 
 			cpumask_set_cpu(cpu, priv->scratchpad.cpumask);
 		}