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net/mlx5e: Allow to match on MPLS parameters only for MPLS over UDP

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Currently, we support hardware offload only for MPLS over UDP.
However, rules matching on MPLS parameters are now wrongly offloaded
for regular MPLS, without actually taking the parameters into
consideration when doing the offload.
Fix it by rejecting such unsupported rules.

Fixes: 72046a91d134 ("net/mlx5e: Allow to match on mpls parameters")
Signed-off-by: Alaa Hleihel <alaa@nvidia.com>
Reviewed-by: Roi Dayan <roid@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
This commit is contained in:
Alaa Hleihel 2021-03-10 17:01:46 +02:00 committed by Saeed Mahameed
parent a07231084d
commit 7d6c86e3cc
1 changed files with 10 additions and 0 deletions
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10
drivers/net/ethernet/mellanox/mlx5/core/en_tc.c
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@ -2296,6 +2296,16 @@ static int __parse_cls_flower(struct mlx5e_priv *priv,
*match_level = MLX5_MATCH_L4;
}
/* Currenlty supported only for MPLS over UDP */
if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_MPLS) &&
!netif_is_bareudp(filter_dev)) {
NL_SET_ERR_MSG_MOD(extack,
"Matching on MPLS is supported only for MPLS over UDP");
netdev_err(priv->netdev,
"Matching on MPLS is supported only for MPLS over UDP\n");
return -EOPNOTSUPP;
}
return 0;
}