From 05c0db08abb82a11e50c1a66392b21bb15aee9cd Mon Sep 17 00:00:00 2001 From: Pravin B Shelar Date: Thu, 7 Mar 2013 13:22:36 +0000 Subject: [PATCH] VXLAN: Use UDP Tunnel segmention. Enable TSO for VXLAN devices and use UDP_TUNNEL to offload vxlan segmentation. Signed-off-by: Pravin B Shelar Acked-by: Stephen Hemminger Signed-off-by: David S. Miller --- drivers/net/vxlan.c | 21 ++++++++++++++++++--- 1 file changed, 18 insertions(+), 3 deletions(-) diff --git a/drivers/net/vxlan.c b/drivers/net/vxlan.c index f10e58ac9c1..f057ec00bba 100644 --- a/drivers/net/vxlan.c +++ b/drivers/net/vxlan.c @@ -820,6 +820,20 @@ static u16 vxlan_src_port(const struct vxlan_dev *vxlan, struct sk_buff *skb) return (((u64) hash * range) >> 32) + vxlan->port_min; } +static int handle_offloads(struct sk_buff *skb) +{ + if (skb_is_gso(skb)) { + int err = skb_unclone(skb, GFP_ATOMIC); + if (unlikely(err)) + return err; + + skb_shinfo(skb)->gso_type |= (SKB_GSO_UDP_TUNNEL | SKB_GSO_UDP); + } else if (skb->ip_summed != CHECKSUM_PARTIAL) + skb->ip_summed = CHECKSUM_NONE; + + return 0; +} + /* Transmit local packets over Vxlan * * Outer IP header inherits ECN and DF from inner header. @@ -963,9 +977,8 @@ static netdev_tx_t vxlan_xmit(struct sk_buff *skb, struct net_device *dev) vxlan_set_owner(dev, skb); - /* See iptunnel_xmit() */ - if (skb->ip_summed != CHECKSUM_PARTIAL) - skb->ip_summed = CHECKSUM_NONE; + if (handle_offloads(skb)) + goto drop; err = ip_local_out(skb); if (likely(net_xmit_eval(err) == 0)) { @@ -1187,8 +1200,10 @@ static void vxlan_setup(struct net_device *dev) dev->features |= NETIF_F_NETNS_LOCAL; dev->features |= NETIF_F_SG | NETIF_F_HW_CSUM; dev->features |= NETIF_F_RXCSUM; + dev->features |= NETIF_F_GSO_SOFTWARE; dev->hw_features |= NETIF_F_SG | NETIF_F_HW_CSUM | NETIF_F_RXCSUM; + dev->hw_features |= NETIF_F_GSO_SOFTWARE; dev->priv_flags &= ~IFF_XMIT_DST_RELEASE; dev->priv_flags |= IFF_LIVE_ADDR_CHANGE; -- 2.43.2