diff options
| author |   Parav Pandit <parav@mellanox.com> | 2019-09-19 17:22:19 -0500 |
|---|---|---|
| committer |   Saeed Mahameed <saeedm@mellanox.com> | 2019-11-01 14:55:15 -0700 |
| commit | 84c7af637512be9c3254189bd5910dae0d2a8602 (patch) | |
| tree | 03d2f314cef1134aef11286f9c6b75b74345f335 /drivers/net/ethernet/mellanox | |
| parent | net/mlx5e: Verify that rule has at least one fwd/drop action (diff) | |
| download | linux-dev-84c7af637512be9c3254189bd5910dae0d2a8602.tar.xz linux-dev-84c7af637512be9c3254189bd5910dae0d2a8602.zip | |
net/mlx5: Do not hold group lock while allocating FTE in software
FTE memory allocation using alloc_fte() doesn't have any dependency
on the flow group.
Hence, do not hold flow group lock while performing alloc_fte().
This helps to reduce contention of flow group lock.
Signed-off-by: Parav Pandit <parav@mellanox.com>
Reviewed-by: Daniel Jurgens <danielj@mellanox.com>
Reviewed-by: Mark Bloch <markb@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Diffstat (limited to 'drivers/net/ethernet/mellanox')
| -rw-r--r-- | drivers/net/ethernet/mellanox/mlx5/core/fs_core.c | 19 |
1 files changed, 10 insertions, 9 deletions
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/fs_core.c b/drivers/net/ethernet/mellanox/mlx5/core/fs_core.c index 3bbb49354829..e5591f4f19b7 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/fs_core.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/fs_core.c @@ -1814,6 +1814,13 @@ search_again_locked: return rule; } + fte = alloc_fte(ft, spec, flow_act); + if (IS_ERR(fte)) { + up_write_ref_node(&ft->node, false); + err = PTR_ERR(fte); + goto err_alloc_fte; + } + nested_down_write_ref_node(&g->node, FS_LOCK_PARENT); up_write_ref_node(&ft->node, false); @@ -1821,17 +1828,9 @@ search_again_locked: if (err) goto err_release_fg; - fte = alloc_fte(ft, spec, flow_act); - if (IS_ERR(fte)) { - err = PTR_ERR(fte); - goto err_release_fg; - } - err = insert_fte(g, fte); - if (err) { - kmem_cache_free(steering->ftes_cache, fte); + if (err) goto err_release_fg; - } nested_down_write_ref_node(&fte->node, FS_LOCK_CHILD); up_write_ref_node(&g->node, false); @@ -1843,6 +1842,8 @@ search_again_locked: err_release_fg: up_write_ref_node(&g->node, false); + kmem_cache_free(steering->ftes_cache, fte); +err_alloc_fte: tree_put_node(&g->node, false); return ERR_PTR(err); } |