[NETFILTER]: ip6table_mangle: reroute when nfmark changes in NF_IP6_LOCAL_OUT

Now that IPv6 supports policy routing we need to reroute in NF_IP6_LOCAL_OUT
when the mark value changes.

Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>

3 files changed, 3 insertions, 8 deletions

diff --git a/include/linux/netfilter_ipv6.h b/include/linux/netfilter_ipv6.h
index 52a7b9e76428..d97e268cdfe5 100644
--- a/include/linux/netfilter_ipv6.h
+++ b/include/linux/netfilter_ipv6.h
@@ -73,6 +73,7 @@ enum nf_ip6_hook_priorities {
 };
 
 #ifdef CONFIG_NETFILTER
+extern int ip6_route_me_harder(struct sk_buff *skb);
 extern unsigned int nf_ip6_checksum(struct sk_buff *skb, unsigned int hook,
                                     unsigned int dataoff, u_int8_t protocol);
 
diff --git a/include/net/ip6_route.h b/include/net/ip6_route.h
index 297909570041..6ca6b71dfe0f 100644
--- a/include/net/ip6_route.h
+++ b/include/net/ip6_route.h
@@ -57,8 +57,6 @@ extern void			ip6_route_input(struct sk_buff *skb);
 extern struct dst_entry *       ip6_route_output(struct sock *sk,
                                                  struct flowi *fl);
 
-extern int                      ip6_route_me_harder(struct sk_buff *skb);
-
 extern void                     ip6_route_init(void);
 extern void                     ip6_route_cleanup(void);
 
diff --git a/net/ipv6/netfilter/ip6table_mangle.c b/net/ipv6/netfilter/ip6table_mangle.c
index 32db04fd8310..386ea260e767 100644
--- a/net/ipv6/netfilter/ip6table_mangle.c
+++ b/net/ipv6/netfilter/ip6table_mangle.c
@@ -180,12 +180,8 @@ ip6t_local_hook(unsigned int hook,
                 && (memcmp(&(*pskb)->nh.ipv6h->saddr, &saddr, sizeof(saddr))
                     || memcmp(&(*pskb)->nh.ipv6h->daddr, &daddr, sizeof(daddr))
                     || (*pskb)->nfmark != nfmark
-                    || (*pskb)->nh.ipv6h->hop_limit != hop_limit)) {
-
-                /* something which could affect routing has changed */
-
-                DEBUGP("ip6table_mangle: we'd need to re-route a packet\n");
-        }
+                    || (*pskb)->nh.ipv6h->hop_limit != hop_limit))
+                return ip6_route_me_harder(*pskb) == 0 ? ret : NF_DROP;
 
         return ret;
 }