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net/mlx5: initialize doorbell dma pools

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Add per-node doorbell dma pool creation and cleanup to mdev lifecycle.

Signed-off-by: Nimrod Oren <noren@nvidia.com>
Reviewed-by: Dragos Tatulea <dtatulea@nvidia.com>
Signed-off-by: Tariq Toukan <tariqt@nvidia.com>
Link: https://patch.msgid.link/20260803132520.2891860-2-tariqt@nvidia.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Nimrod Oren
2026-08-03 16:25:18 +03:00
committed by Jakub Kicinski
parent 59d3b0a5f1
commit 46f636cd62
4 changed files with 48 additions and 0 deletions
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37
drivers/net/ethernet/mellanox/mlx5/core/alloc.c
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@@ -444,6 +444,43 @@ void mlx5_frag_buf_free(struct mlx5_core_dev *dev, struct mlx5_frag_buf *buf)
}
EXPORT_SYMBOL_GPL(mlx5_frag_buf_free);
void mlx5_db_pools_cleanup(struct mlx5_core_dev *dev)
{
struct mlx5_priv *priv = &dev->priv;
int node;
for_each_node_state(node, N_POSSIBLE)
if (priv->db_node_pools[node])
mlx5_dma_pool_destroy(priv->db_node_pools[node]);
kfree(priv->db_node_pools);
priv->db_node_pools = NULL;
}
int mlx5_db_pools_init(struct mlx5_core_dev *dev)
{
struct mlx5_priv *priv = &dev->priv;
int node;
priv->db_node_pools = kzalloc_objs(*priv->db_node_pools, nr_node_ids);
if (!priv->db_node_pools)
return -ENOMEM;
for_each_node_state(node, N_POSSIBLE) {
struct mlx5_dma_pool *pool;
pool = mlx5_dma_pool_create(dev, node,
order_base_2(cache_line_size()));
if (!pool) {
mlx5_db_pools_cleanup(dev);
return -ENOMEM;
}
priv->db_node_pools[node] = pool;
}
return 0;
}
static struct mlx5_db_pgdir *mlx5_alloc_db_pgdir(struct mlx5_core_dev *dev,
int node)
{

7
drivers/net/ethernet/mellanox/mlx5/core/main.c
View File

@@ -1830,6 +1830,10 @@ int mlx5_mdev_init(struct mlx5_core_dev *dev, int profile_idx)
if (err)
goto err_frag_buf_pools_init;
err = mlx5_db_pools_init(dev);
if (err)
goto err_db_pools_init;
INIT_LIST_HEAD(&priv->traps);
err = mlx5_cmd_init(dev);
@@ -1891,6 +1895,8 @@ int mlx5_mdev_init(struct mlx5_core_dev *dev, int profile_idx)
err_timeout_init:
mlx5_cmd_cleanup(dev);
err_cmd_init:
mlx5_db_pools_cleanup(dev);
err_db_pools_init:
mlx5_frag_buf_pools_cleanup(dev);
err_frag_buf_pools_init:
debugfs_remove(dev->priv.dbg.dbg_root);
@@ -1917,6 +1923,7 @@ void mlx5_mdev_uninit(struct mlx5_core_dev *dev)
mlx5_health_cleanup(dev);
mlx5_tout_cleanup(dev);
mlx5_cmd_cleanup(dev);
mlx5_db_pools_cleanup(dev);
mlx5_frag_buf_pools_cleanup(dev);
debugfs_remove_recursive(dev->priv.dbg.dbg_root);
mutex_destroy(&priv->pgdir_mutex);

2
drivers/net/ethernet/mellanox/mlx5/core/mlx5_core.h
View File

@@ -438,6 +438,8 @@ int mlx5_mdev_init(struct mlx5_core_dev *dev, int profile_idx);
void mlx5_mdev_uninit(struct mlx5_core_dev *dev);
int mlx5_frag_buf_pools_init(struct mlx5_core_dev *dev);
void mlx5_frag_buf_pools_cleanup(struct mlx5_core_dev *dev);
int mlx5_db_pools_init(struct mlx5_core_dev *dev);
void mlx5_db_pools_cleanup(struct mlx5_core_dev *dev);
int mlx5_init_one(struct mlx5_core_dev *dev);
int mlx5_init_one_devl_locked(struct mlx5_core_dev *dev);
void mlx5_uninit_one(struct mlx5_core_dev *dev);

2
include/linux/mlx5/driver.h
View File

@@ -569,6 +569,7 @@ enum mlx5_page_mgt_mode {
};
struct mlx5_frag_buf_node_pools;
struct mlx5_dma_pool;
struct mlx5_ft_pool;
struct mlx5_priv {
/* IRQ table valid only for real pci devices PF or VF */
@@ -602,6 +603,7 @@ struct mlx5_priv {
struct list_head pgdir_list;
struct mlx5_frag_buf_node_pools **frag_buf_node_pools;
struct mlx5_dma_pool **db_node_pools;
/* end: alloc stuff */
struct mlx5_adev **adev;