[PATCH net-next] net/mlx5e: flower: check for unsupported control flags
From: Asbjørn Sloth Tønnesen
Date: Wed Apr 17 2024 - 09:53:12 EST
Use flow_rule_is_supp_control_flags() to reject filters with
unsupported control flags.
In case any unsupported control flags are masked,
flow_rule_is_supp_control_flags() sets a NL extended
error message, and we return -EOPNOTSUPP.
Only compile-tested.
Signed-off-by: Asbjørn Sloth Tønnesen <ast@xxxxxxxxxxx>
---
drivers/net/ethernet/mellanox/mlx5/core/en_tc.c | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_tc.c b/drivers/net/ethernet/mellanox/mlx5/core/en_tc.c
index aeb32cb27182..5019280cfcdd 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_tc.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_tc.c
@@ -2819,6 +2819,11 @@ static int __parse_cls_flower(struct mlx5e_priv *priv,
else
*match_level = MLX5_MATCH_L3;
}
+
+ if (!flow_rule_is_supp_control_flags(FLOW_DIS_IS_FRAGMENT |
+ FLOW_DIS_FIRST_FRAG,
+ match.mask->flags, extack))
+ return -EOPNOTSUPP;
}
if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_BASIC)) {
--
2.43.0