[PATCH net-next 4/4] VXLAN: Use UDP Tunnel segmention.
From: Pravin B Shelar <hidden>
Date: 2013-02-16 01:04:38
Subsystem:
networking drivers, the rest · Maintainers:
Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds
Enable TSO for VXLAN devices and use UDP_TUNNEL offload support. Signed-off-by: Pravin B Shelar <redacted> --- drivers/net/vxlan.c | 23 +++++++++++++++++++---- 1 files changed, 19 insertions(+), 4 deletions(-)
diff --git a/drivers/net/vxlan.c b/drivers/net/vxlan.c
index 9d70421..61b7cd0 100644
--- a/drivers/net/vxlan.c
+++ b/drivers/net/vxlan.c@@ -823,6 +823,20 @@ 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.
@@ -962,13 +976,12 @@ static netdev_tx_t vxlan_xmit(struct sk_buff *skb, struct net_device *dev) iph->daddr = dst; iph->saddr = fl4.saddr; iph->ttl = ttl ? : ip4_dst_hoplimit(&rt->dst); + ip_select_ident(iph, &rt->dst, NULL); vxlan_set_owner(dev, skb); - /* See iptunnel_xmit() */ - if (skb->ip_summed != CHECKSUM_PARTIAL) - skb->ip_summed = CHECKSUM_NONE; - ip_select_ident(iph, &rt->dst, NULL); + if (handle_offloads(skb)) + goto drop; err = ip_local_out(skb); if (likely(net_xmit_eval(err) == 0)) {
@@ -1190,8 +1203,10 @@ 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;
--
1.7.1