IPVS: Add and bind IPv6 xmit functions

[net-next-2.6.git] / net / ipv4 / ipvs / ip_vs_core.c

diff --git a/net/ipv4/ipvs/ip_vs_core.c b/net/ipv4/ipvs/ip_vs_core.c
index 2d5a4331709ba6bbc2926171e6a55a34fee0b6b8..d6f5bf9049adc76066d20beb6a5b39a88fc93297 100644 (file)
--- a/net/ipv4/ipvs/ip_vs_core.c
+++ b/net/ipv4/ipvs/ip_vs_core.c
@@ -570,6 +570,49 @@ void ip_vs_nat_icmp(struct sk_buff *skb, struct ip_vs_protocol *pp,
                        "Forwarding altered incoming ICMP");
 }
 
+#ifdef CONFIG_IP_VS_IPV6
+void ip_vs_nat_icmp_v6(struct sk_buff *skb, struct ip_vs_protocol *pp,
+                   struct ip_vs_conn *cp, int inout)
+{
+       struct ipv6hdr *iph      = ipv6_hdr(skb);
+       unsigned int icmp_offset = sizeof(struct ipv6hdr);
+       struct icmp6hdr *icmph   = (struct icmp6hdr *)(skb_network_header(skb) +
+                                                     icmp_offset);
+       struct ipv6hdr *ciph     = (struct ipv6hdr *)(icmph + 1);
+
+       if (inout) {
+               iph->saddr = cp->vaddr.in6;
+               ciph->daddr = cp->vaddr.in6;
+       } else {
+               iph->daddr = cp->daddr.in6;
+               ciph->saddr = cp->daddr.in6;
+       }
+
+       /* the TCP/UDP port */
+       if (IPPROTO_TCP == ciph->nexthdr || IPPROTO_UDP == ciph->nexthdr) {
+               __be16 *ports = (void *)ciph + sizeof(struct ipv6hdr);
+
+               if (inout)
+                       ports[1] = cp->vport;
+               else
+                       ports[0] = cp->dport;
+       }
+
+       /* And finally the ICMP checksum */
+       icmph->icmp6_cksum = 0;
+       /* TODO IPv6: is this correct for ICMPv6? */
+       ip_vs_checksum_complete(skb, icmp_offset);
+       skb->ip_summed = CHECKSUM_UNNECESSARY;
+
+       if (inout)
+               IP_VS_DBG_PKT(11, pp, skb, (void *)ciph - (void *)iph,
+                       "Forwarding altered outgoing ICMPv6");
+       else
+               IP_VS_DBG_PKT(11, pp, skb, (void *)ciph - (void *)iph,
+                       "Forwarding altered incoming ICMPv6");
+}
+#endif
+
 /*
  *     Handle ICMP messages in the inside-to-outside direction (outgoing).
  *     Find any that might be relevant, check against existing connections,