diff options
| author | Cong Wang <amwang@redhat.com> | 2013-08-31 13:44:34 +0800 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2013-08-31 22:30:00 -0400 |
| commit | e15a00aafa4b7953ad717d3cb1ad7acf4ff76945 (patch) | |
| tree | 7acce1d228f31755cac9b9d10d8574b48eb89123 /drivers/net/vxlan.c | |
| parent | e4c7ed415387cf718ffbec305396c30cee092987 (diff) | |
| download | lwn-e15a00aafa4b7953ad717d3cb1ad7acf4ff76945.tar.gz lwn-e15a00aafa4b7953ad717d3cb1ad7acf4ff76945.zip | |
vxlan: add ipv6 route short circuit support
route short circuit only has IPv4 part, this patch adds
the IPv6 part. nd_tbl will be needed.
Cc: David S. Miller <davem@davemloft.net>
Cc: David Stevens <dlstevens@us.ibm.com>
Signed-off-by: Cong Wang <amwang@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/vxlan.c')
| -rw-r--r-- | drivers/net/vxlan.c | 30 |
1 files changed, 28 insertions, 2 deletions
diff --git a/drivers/net/vxlan.c b/drivers/net/vxlan.c index faf131e02a72..c833763fe5c4 100644 --- a/drivers/net/vxlan.c +++ b/drivers/net/vxlan.c @@ -1200,7 +1200,6 @@ static bool route_shortcircuit(struct net_device *dev, struct sk_buff *skb) { struct vxlan_dev *vxlan = netdev_priv(dev); struct neighbour *n; - struct iphdr *pip; if (is_multicast_ether_addr(eth_hdr(skb)->h_dest)) return false; @@ -1208,6 +1207,9 @@ static bool route_shortcircuit(struct net_device *dev, struct sk_buff *skb) n = NULL; switch (ntohs(eth_hdr(skb)->h_proto)) { case ETH_P_IP: + { + struct iphdr *pip; + if (!pskb_may_pull(skb, sizeof(struct iphdr))) return false; pip = ip_hdr(skb); @@ -1223,6 +1225,29 @@ static bool route_shortcircuit(struct net_device *dev, struct sk_buff *skb) } break; + } +#if IS_ENABLED(CONFIG_IPV6) + case ETH_P_IPV6: + { + struct ipv6hdr *pip6; + + if (!pskb_may_pull(skb, sizeof(struct ipv6hdr))) + return false; + pip6 = ipv6_hdr(skb); + n = neigh_lookup(ipv6_stub->nd_tbl, &pip6->daddr, dev); + if (!n && (vxlan->flags & VXLAN_F_L3MISS)) { + union vxlan_addr ipa = { + .sin6.sin6_addr = pip6->daddr, + .sa.sa_family = AF_INET6, + }; + + vxlan_ip_miss(dev, &ipa); + return false; + } + + break; + } +#endif default: return false; } @@ -1659,7 +1684,8 @@ static netdev_tx_t vxlan_xmit(struct sk_buff *skb, struct net_device *dev) did_rsc = false; if (f && (f->flags & NTF_ROUTER) && (vxlan->flags & VXLAN_F_RSC) && - ntohs(eth->h_proto) == ETH_P_IP) { + (ntohs(eth->h_proto) == ETH_P_IP || + ntohs(eth->h_proto) == ETH_P_IPV6)) { did_rsc = route_shortcircuit(dev, skb); if (did_rsc) f = vxlan_find_mac(vxlan, eth->h_dest); |