[PATCH 5.0 028/115] net/mlx5e: Protect against non-uplink representor for encap

[Greg Kroah-Hartman]

From: Dmytro Linkin <dmitro...@mellanox.com>

[ Upstream commit 5e0060b1491b299b1706414e61ede0b02265680e ]

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

Fixes: 3e621b19b0bb ("net/mlx5e: Support TC encapsulation offloads with upper 
devices")
Signed-off-by: Dmytro Linkin <dmitro...@mellanox.com>
Reviewed-by: Eli Britstein <el...@mellanox.com>
Reviewed-by: Vlad Buslov <vla...@mellanox.com>
Reviewed-by: Roi Dayan <r...@mellanox.com>
Signed-off-by: Saeed Mahameed <sae...@mellanox.com>
Signed-off-by: Greg Kroah-Hartman <gre...@linuxfoundation.org>
---
 drivers/net/ethernet/mellanox/mlx5/core/en/tc_tun.c |    4 ++++
 1 file changed, 4 insertions(+)

--- 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
                        return -EOPNOTSUPP;
        }
 
+       if (!(mlx5e_eswitch_rep(*out_dev) &&
+             mlx5e_is_uplink_rep(netdev_priv(*out_dev))))
+               return -EOPNOTSUPP;
+
        return 0;
 }