[PATCH mlx5-next 5/5] net/mlx5: Set only stag for match untagged packets

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From: Mark Bloch <markb@xxxxxxxxxxxx>

cvlan_tag enabled in match criteria and disabled in
match value means both S & C tags don't exist (untagged of both).

Signed-off-by: Mark Bloch <markb@xxxxxxxxxxxx>
Signed-off-by: Saeed Mahameed <saeedm@xxxxxxxxxxxx>
---
 drivers/net/ethernet/mellanox/mlx5/core/en_tc.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_tc.c b/drivers/net/ethernet/mellanox/mlx5/core/en_tc.c
index cc096f6011d9..9e9b41ab392b 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_tc.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_tc.c
@@ -1593,7 +1593,10 @@ static int __parse_cls_flower(struct mlx5e_priv *priv,
 			*match_level = MLX5_MATCH_L2;
 		}
 	} else if (*match_level != MLX5_MATCH_NONE) {
-		MLX5_SET(fte_match_set_lyr_2_4, headers_c, svlan_tag, 1);
+		/* cvlan_tag enabled in match criteria and
+		 * disabled in match value means both S & C tags
+		 * don't exist (untagged of both)
+		 */
 		MLX5_SET(fte_match_set_lyr_2_4, headers_c, cvlan_tag, 1);
 		*match_level = MLX5_MATCH_L2;
 	}
-- 
2.21.0





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