[IPV6] MROUTE: Support multicast forwarding.

Based on ancient patch by Mickael Hoerdt
<hoerdt@clarinet.u-strasbg.fr>, which is available at
<http://www-r2.u-strasbg.fr/~hoerdt/dev/linux_ipv6_mforwarding/patch-linux-ipv6-mforwarding-0.1a>.

Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>

1 files changed, 5 insertions, 0 deletions

diff --git a/include/linux/ipv6.h b/include/linux/ipv6.h
index b90d3d461d4e..f53e4764fc05 100644
--- a/include/linux/ipv6.h
+++ b/include/linux/ipv6.h
@@ -160,6 +160,9 @@ struct ipv6_devconf {
 #ifdef CONFIG_IPV6_OPTIMISTIC_DAD
         __s32           optimistic_dad;
 #endif
+#ifdef CONFIG_IPV6_MROUTE
+        __s32           mc_forwarding;
+#endif
         void            *sysctl;
 };
 
@@ -190,6 +193,7 @@ enum {
         DEVCONF_PROXY_NDP,
         DEVCONF_OPTIMISTIC_DAD,
         DEVCONF_ACCEPT_SOURCE_ROUTE,
+        DEVCONF_MC_FORWARDING,
         DEVCONF_MAX
 };
 
@@ -230,6 +234,7 @@ struct inet6_skb_parm {
 #endif
 
 #define IP6SKB_XFRM_TRANSFORMED 1
+#define IP6SKB_FORWARDED        2
 };
 
 #define IP6CB(skb)      ((struct inet6_skb_parm*)((skb)->cb))