net/mlx4_en: Notify TX Vlan offload change

Notify users when TX vlan offload feature changed with ethtool.
Relevant command - ethtool -K <eth> txvlan on/off.

Signed-off-by: Ido Shamay <idos@mellanox.com>
Signed-off-by: Amir Vadai <amirv@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 4 insertions, 0 deletions

diff --git a/drivers/net/ethernet/mellanox/mlx4/en_netdev.c b/drivers/net/ethernet/mellanox/mlx4/en_netdev.c
index 028937b2a199..2a210c4efb89 100644
--- a/drivers/net/ethernet/mellanox/mlx4/en_netdev.c
+++ b/drivers/net/ethernet/mellanox/mlx4/en_netdev.c
@@ -2202,6 +2202,10 @@ static int mlx4_en_set_features(struct net_device *netdev,
                         return ret;
         }
 
+        if (DEV_FEATURE_CHANGED(netdev, features, NETIF_F_HW_VLAN_CTAG_TX))
+                en_info(priv, "Turn %s TX vlan strip offload\n",
+                        (features & NETIF_F_HW_VLAN_CTAG_TX) ? "ON" : "OFF");
+
         if (features & NETIF_F_LOOPBACK)
                 priv->ctrl_flags |= cpu_to_be32(MLX4_WQE_CTRL_FORCE_LOOPBACK);
         else