From f3147015fa0769cf1dcbfdb9040ad380cc4daeb5 Mon Sep 17 00:00:00 2001 From: Maher Sanalla Date: Mon, 12 Jun 2023 11:58:14 +0300 Subject: net/mlx5: Add IRQ vector to CPU lookup function Currently, once driver load completes, IRQ requests were performed for all vectors. However, as we move to support dynamic creation of EQs, this will not be the case as some IRQs will not exist at this stage. Thus, in such case, use the default CPU to IRQ mapping which is the serial mapping based on IRQ vector index. Meaning, the n'th vector gets mapped to the n'th CPU. Introduce an API function mlx5_comp_vector_cpu() that takes an IRQ index and provides the corresponding CPU mapping. It utilizes the existing IRQ affinity if defined, or resorts to the default serialized CPU mapping otherwise. Signed-off-by: Maher Sanalla Reviewed-by: Shay Drory Reviewed-by: Moshe Shemesh Signed-off-by: Saeed Mahameed --- drivers/net/ethernet/mellanox/mlx5/core/en_main.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'drivers/net/ethernet/mellanox/mlx5/core/en_main.c') diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_main.c b/drivers/net/ethernet/mellanox/mlx5/core/en_main.c index 1c820119e438..9ec7b975c549 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/en_main.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/en_main.c @@ -2445,7 +2445,7 @@ 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; @@ -2862,7 +2862,7 @@ static void mlx5e_set_default_xps_cpumasks(struct mlx5e_priv *priv, 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); } -- cgit