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net/mlx5: fs, retry insertion to hash table on EBUSY

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When inserting into an rhashtable faster than it can grow, an -EBUSY error
may be encountered. Modify the insertion logic to retry on -EBUSY until
either a successful insertion or a genuine error is returned.

Signed-off-by: Mark Bloch <mbloch@nvidia.com>
Signed-off-by: Tariq Toukan <tariqt@nvidia.com>
Reviewed-by: Przemek Kitszel <przemyslaw.kitszel@intel.com>
Link: https://patch.msgid.link/20241219175841.1094544-6-tariqt@nvidia.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Mark Bloch
2024-12-19 19:58:35 +02:00
committed by Jakub Kicinski
parent 31d1356b8f
commit 586face881
1 changed files with 7 additions and 1 deletions
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8
drivers/net/ethernet/mellanox/mlx5/core/fs_core.c
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@@ -821,11 +821,17 @@ static int insert_fte(struct mlx5_flow_group *fg, struct fs_fte *fte)
return index;
fte->index = index + fg->start_index;
retry_insert:
ret = rhashtable_insert_fast(&fg->ftes_hash,
&fte->hash,
rhash_fte);
if (ret)
if (ret) {
if (ret == -EBUSY) {
cond_resched();
goto retry_insert;
}
goto err_ida_remove;
}
tree_add_node(&fte->node, &fg->node);
list_add_tail(&fte->node.list, &fg->node.children);