net/mlx5e: Support tagged tunnel over bond

Stacked devices like bond interface may have a VLAN device on top of
them. Detect lag state correctly under this condition, and return the
correct routed net device, according to it the encap header is built.

Fixes: e32ee6c78efa ("net/mlx5e: Support tunnel encap over tagged Ethernet")
Signed-off-by: Eli Britstein <elibr@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 fe5d4d7..231e7cd 100644 (file)
--- a/drivers/net/ethernet/mellanox/mlx5/core/en/tc_tun.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en/tc_tun.c
@@ -11,24 +11,25 @@ static int get_route_and_out_devs(struct mlx5e_priv *priv,
                                  struct net_device **route_dev,
                                  struct net_device **out_dev)
 {
+       struct net_device *uplink_dev, *uplink_upper, *real_dev;
        struct mlx5_eswitch *esw = priv->mdev->priv.eswitch;
-       struct net_device *uplink_dev, *uplink_upper;
        bool dst_is_lag_dev;
 
+       real_dev = is_vlan_dev(dev) ? vlan_dev_real_dev(dev) : dev;
        uplink_dev = mlx5_eswitch_uplink_get_proto_dev(esw, REP_ETH);
        uplink_upper = netdev_master_upper_dev_get(uplink_dev);
        dst_is_lag_dev = (uplink_upper &&
                          netif_is_lag_master(uplink_upper) &&
-                         dev == uplink_upper &&
+                         real_dev == uplink_upper &&
                          mlx5_lag_is_sriov(priv->mdev));
 
        /* if the egress device isn't on the same HW e-switch or
         * it's a LAG device, use the uplink
         */
-       if (!netdev_port_same_parent_id(priv->netdev, dev) ||
+       if (!netdev_port_same_parent_id(priv->netdev, real_dev) ||
            dst_is_lag_dev) {
-               *route_dev = uplink_dev;
-               *out_dev = *route_dev;
+               *route_dev = dev;
+               *out_dev = uplink_dev;
        } else {
                *route_dev = dev;
                if (is_vlan_dev(*route_dev))