From mboxrd@z Thu Jan 1 00:00:00 1970 From: Cong Wang Subject: [PATCH net-next v10 07/11] vxlan: add ipv6 route short circuit support Date: Wed, 28 Aug 2013 13:22:55 +0800 Message-ID: <1377667379-2315-8-git-send-email-amwang@redhat.com> References: <1377667379-2315-1-git-send-email-amwang@redhat.com> Cc: "David S. Miller" , Cong Wang , David Stevens To: netdev@vger.kernel.org Return-path: Received: from mx1.redhat.com ([209.132.183.28]:39960 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752669Ab3H1FZA (ORCPT ); Wed, 28 Aug 2013 01:25:00 -0400 In-Reply-To: <1377667379-2315-1-git-send-email-amwang@redhat.com> Sender: netdev-owner@vger.kernel.org List-ID: From: Cong Wang route short circuit only has IPv4 part, this patch adds the IPv6 part. nd_tbl will be needed. Cc: David S. Miller Cc: David Stevens Signed-off-by: Cong Wang --- drivers/net/vxlan.c | 28 ++++++++++++++++++++++++++-- include/net/addrconf.h | 1 + net/ipv6/af_inet6.c | 1 + 3 files changed, 28 insertions(+), 2 deletions(-) diff --git a/drivers/net/vxlan.c b/drivers/net/vxlan.c index 717c6e3..79eb09c 100644 --- a/drivers/net/vxlan.c +++ b/drivers/net/vxlan.c @@ -1198,7 +1198,6 @@ 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; @@ -1206,6 +1205,9 @@ 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); @@ -1219,6 +1221,27 @@ 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; + ipa.sin6.sin6_addr = pip6->daddr; + ipa.sa.sa_family = AF_INET6; + vxlan_ip_miss(dev, &ipa); + return false; + } + + break; + } +#endif default: return false; } @@ -1655,7 +1678,8 @@ 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); diff --git a/include/net/addrconf.h b/include/net/addrconf.h index 5339cab..bcf9573 100644 --- a/include/net/addrconf.h +++ b/include/net/addrconf.h @@ -153,6 +153,7 @@ struct ipv6_stub { int (*ipv6_dst_lookup)(struct sock *sk, struct dst_entry **dst, struct flowi6 *fl6); void (*udpv6_encap_enable)(void); + struct neigh_table *nd_tbl; }; extern const struct ipv6_stub *ipv6_stub __read_mostly; diff --git a/net/ipv6/af_inet6.c b/net/ipv6/af_inet6.c index 0c9c22f..1996a7c 100644 --- a/net/ipv6/af_inet6.c +++ b/net/ipv6/af_inet6.c @@ -815,6 +815,7 @@ static const struct ipv6_stub ipv6_stub_impl = { .ipv6_sock_mc_drop = ipv6_sock_mc_drop, .ipv6_dst_lookup = ip6_dst_lookup, .udpv6_encap_enable = udpv6_encap_enable, + .nd_tbl = &nd_tbl, }; static int __init inet6_init(void) -- 1.7.7.6