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-rw-r--r--drivers/net/ethernet/mellanox/mlx5/core/fs_core.c16
1 files changed, 10 insertions, 6 deletions
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/fs_core.c b/drivers/net/ethernet/mellanox/mlx5/core/fs_core.c
index 44ed42e0e1c7..62ce2b9417ab 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/fs_core.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/fs_core.c
@@ -1680,7 +1680,7 @@ try_add_to_existing_fg(struct mlx5_flow_table *ft,
struct match_list *iter;
bool take_write = false;
struct fs_fte *fte;
- u64 version;
+ u64 version = 0;
int err;
fte = alloc_fte(ft, spec, flow_act);
@@ -1688,10 +1688,12 @@ try_add_to_existing_fg(struct mlx5_flow_table *ft,
return ERR_PTR(-ENOMEM);
search_again_locked:
- version = matched_fgs_get_version(match_head);
if (flow_act->flags & FLOW_ACT_NO_APPEND)
goto skip_search;
- /* Try to find a fg that already contains a matching fte */
+ version = matched_fgs_get_version(match_head);
+ /* Try to find an fte with identical match value and attempt update its
+ * action.
+ */
list_for_each_entry(iter, match_head, list) {
struct fs_fte *fte_tmp;
@@ -1719,10 +1721,12 @@ skip_search:
goto out;
}
- /* Check the fgs version, for case the new FTE with the
- * same values was added while the fgs weren't locked
+ /* Check the fgs version. If version have changed it could be that an
+ * FTE with the same match value was added while the fgs weren't
+ * locked.
*/
- if (version != matched_fgs_get_version(match_head)) {
+ if (!(flow_act->flags & FLOW_ACT_NO_APPEND) &&
+ version != matched_fgs_get_version(match_head)) {
take_write = true;
goto search_again_locked;
}