ndo_gso_check() was recently introduced to allow NICs to report the offloading support that they have on a per-skb basis. Add an implementation for this driver which checks for something that looks like VXLAN.
Implementation shamelessly stolen from Tom Herbert: http://thread.gmane.org/gmane.linux.network/332428/focus=333111 Signed-off-by: Joe Stringer <joestrin...@nicira.com> --- drivers/net/ethernet/mellanox/mlx4/en_netdev.c | 12 ++++++++++++ 1 file changed, 12 insertions(+) diff --git a/drivers/net/ethernet/mellanox/mlx4/en_netdev.c b/drivers/net/ethernet/mellanox/mlx4/en_netdev.c index f3032fe..aca9908 100644 --- a/drivers/net/ethernet/mellanox/mlx4/en_netdev.c +++ b/drivers/net/ethernet/mellanox/mlx4/en_netdev.c @@ -2344,6 +2344,17 @@ static void mlx4_en_del_vxlan_port(struct net_device *dev, } #endif +static bool mlx4_en_gso_check(struct sk_buff *skb, struct net_device *dev) +{ + if ((skb_shinfo(skb)->gso_type & SKB_GSO_UDP_TUNNEL) && + (skb->inner_protocol_type != ENCAP_TYPE_ETHER || + skb->inner_protocol != htons(ETH_P_TEB) || + skb_inner_mac_header(skb) - skb_transport_header(skb) != 16)) + return false; + + return true; +} + static const struct net_device_ops mlx4_netdev_ops = { .ndo_open = mlx4_en_open, .ndo_stop = mlx4_en_close, @@ -2374,6 +2385,7 @@ static const struct net_device_ops mlx4_netdev_ops = { .ndo_add_vxlan_port = mlx4_en_add_vxlan_port, .ndo_del_vxlan_port = mlx4_en_del_vxlan_port, #endif + .ndo_gso_check = mlx4_en_gso_check, }; static const struct net_device_ops mlx4_netdev_ops_master = { -- 1.7.10.4 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
