mlx4e: Do not attempt to offload VXLAN ports that are unrecognized

The mlx4e driver does not support more than one port for VXLAN offload.  As
such expecting the hardware to offload other ports is invalid since it
appears the parsing logic is used to perform Tx checksum and segmentation
offloads.  Use the vxlan_port number to determine in which cases we can
apply the offload and in which cases we can not.

Signed-off-by: Alexander Duyck <aduyck@mirantis.com>
Reviewed-by: Tariq Toukan <tariqt@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/ethernet/mellanox/mlx4/en_netdev.c b/drivers/net/ethernet/mellanox/mlx4/en_netdev.c
index 19ceced6736c600798b8ce50f70bb3c9072b05bd..a2c25365a8a305a028c899b8652fc6173a9a6d6e 100644 (file)
--- a/drivers/net/ethernet/mellanox/mlx4/en_netdev.c
+++ b/drivers/net/ethernet/mellanox/mlx4/en_netdev.c
@@ -2447,9 +2447,14 @@ static netdev_features_t mlx4_en_features_check(struct sk_buff *skb,
         * strip that feature if this is an IPv6 encapsulated frame.
         */
        if (skb->encapsulation &&
-           (skb->ip_summed == CHECKSUM_PARTIAL) &&
-           (ip_hdr(skb)->version != 4))
-               features &= ~(NETIF_F_CSUM_MASK | NETIF_F_GSO_MASK);
+           (skb->ip_summed == CHECKSUM_PARTIAL)) {
+               struct mlx4_en_priv *priv = netdev_priv(dev);
+
+               if (!priv->vxlan_port ||
+                   (ip_hdr(skb)->version != 4) ||
+                   (udp_hdr(skb)->dest != priv->vxlan_port))
+                       features &= ~(NETIF_F_CSUM_MASK | NETIF_F_GSO_MASK);
+       }
 
        return features;
 }