net/mlx5e: Use the inner headers to determine tc/pedit offload limitation on decap...

In packets that need to be decaped the internal headers
have to be checked, not the external ones.

Fixes: bdd66ac0aeed ("net/mlx5e: Disallow TC offloading of unsupported match/action combinations")
Signed-off-by: Guy Shattah <sguy@mellanox.com>
Reviewed-by: Or Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_tc.c b/drivers/net/ethernet/mellanox/mlx5/core/en_tc.c
index 043896e..1c3c9fa 100644 (file)
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_tc.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_tc.c
@@ -2181,6 +2181,7 @@ static bool csum_offload_supported(struct mlx5e_priv *priv,
 
 static bool modify_header_match_supported(struct mlx5_flow_spec *spec,
                                          struct tcf_exts *exts,
+                                         u32 actions,
                                          struct netlink_ext_ack *extack)
 {
        const struct tc_action *a;
@@ -2190,7 +2191,11 @@ static bool modify_header_match_supported(struct mlx5_flow_spec *spec,
        u16 ethertype;
        int nkeys, i;
 
-       headers_v = MLX5_ADDR_OF(fte_match_param, spec->match_value, outer_headers);
+       if (actions & MLX5_FLOW_CONTEXT_ACTION_DECAP)
+               headers_v = MLX5_ADDR_OF(fte_match_param, spec->match_value, inner_headers);
+       else
+               headers_v = MLX5_ADDR_OF(fte_match_param, spec->match_value, outer_headers);
+
        ethertype = MLX5_GET(fte_match_set_lyr_2_4, headers_v, ethertype);
 
        /* for non-IP we only re-write MACs, so we're okay */
@@ -2247,7 +2252,7 @@ static bool actions_match_supported(struct mlx5e_priv *priv,
 
        if (actions & MLX5_FLOW_CONTEXT_ACTION_MOD_HDR)
                return modify_header_match_supported(&parse_attr->spec, exts,
-                                                    extack);
+                                                    actions, extack);
 
        return true;
 }