net/mlx5e: Protect against non-uplink representor for encap

TC encap offload is supported only for the physical uplink
representor. Fail for non uplink representor.

Fixes: 76b1afdd4274 ("net/mlx5e: Support TC encapsulation offloads with upper devices")
Signed-off-by: Dmytro Linkin <dmitrolin@mellanox.com>
Reviewed-by: Eli Britstein <elibr@mellanox.com>
Reviewed-by: Vlad Buslov <vladbu@mellanox.com>
Reviewed-by: Roi Dayan <roid@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en/tc_tun.c b/drivers/net/ethernet/mellanox/mlx5/core/en/tc_tun.c
index fa2a3c444cdc604c308999f140a3125becd9c8d3..eec07b34b4ad07c627eebf36f87557296cc1701a 100644 (file)
--- a/drivers/net/ethernet/mellanox/mlx5/core/en/tc_tun.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en/tc_tun.c
@@ -39,6 +39,10 @@ static int get_route_and_out_devs(struct mlx5e_priv *priv,
                        return -EOPNOTSUPP;
        }
 
+       if (!(mlx5e_eswitch_rep(*out_dev) &&
+             mlx5e_is_uplink_rep(netdev_priv(*out_dev))))
+               return -EOPNOTSUPP;
+
        return 0;
 }