IPVS: Activate IPv6 Netfilter hooks

Register the previously defined or adapted netfilter hook functions for
IPv6 as PF_INET6 hooks.

Signed-off-by: Julius Volz <juliusv@google.com>
Signed-off-by: Simon Horman <horms@verge.net.au>

1 files changed, 37 insertions, 0 deletions

diff --git a/net/ipv4/ipvs/ip_vs_core.c b/net/ipv4/ipvs/ip_vs_core.c
index 5a7a81778b0b..7d3de9db5ac5 100644
--- a/net/ipv4/ipvs/ip_vs_core.c
+++ b/net/ipv4/ipvs/ip_vs_core.c
@@ -1413,6 +1413,43 @@ static struct nf_hook_ops ip_vs_ops[] __read_mostly = {
                 .hooknum        = NF_INET_POST_ROUTING,
                 .priority       = NF_IP_PRI_NAT_SRC-1,
         },
+#ifdef CONFIG_IP_VS_IPV6
+        /* After packet filtering, forward packet through VS/DR, VS/TUN,
+         * or VS/NAT(change destination), so that filtering rules can be
+         * applied to IPVS. */
+        {
+                .hook           = ip_vs_in,
+                .owner          = THIS_MODULE,
+                .pf             = PF_INET6,
+                .hooknum        = NF_INET_LOCAL_IN,
+                .priority       = 100,
+        },
+        /* After packet filtering, change source only for VS/NAT */
+        {
+                .hook           = ip_vs_out,
+                .owner          = THIS_MODULE,
+                .pf             = PF_INET6,
+                .hooknum        = NF_INET_FORWARD,
+                .priority       = 100,
+        },
+        /* After packet filtering (but before ip_vs_out_icmp), catch icmp
+         * destined for 0.0.0.0/0, which is for incoming IPVS connections */
+        {
+                .hook           = ip_vs_forward_icmp_v6,
+                .owner          = THIS_MODULE,
+                .pf             = PF_INET6,
+                .hooknum        = NF_INET_FORWARD,
+                .priority       = 99,
+        },
+        /* Before the netfilter connection tracking, exit from POST_ROUTING */
+        {
+                .hook           = ip_vs_post_routing,
+                .owner          = THIS_MODULE,
+                .pf             = PF_INET6,
+                .hooknum        = NF_INET_POST_ROUTING,
+                .priority       = NF_IP6_PRI_NAT_SRC-1,
+        },
+#endif
 };