[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, 7 insertions, 0 deletions

diff --git a/net/ipv6/ipv6_sockglue.c b/net/ipv6/ipv6_sockglue.c
index 4195ac92345e..99624109c010 100644
--- a/net/ipv6/ipv6_sockglue.c
+++ b/net/ipv6/ipv6_sockglue.c
@@ -33,6 +33,7 @@
 #include <linux/sockios.h>
 #include <linux/net.h>
 #include <linux/in6.h>
+#include <linux/mroute6.h>
 #include <linux/netdevice.h>
 #include <linux/if_arp.h>
 #include <linux/init.h>
@@ -118,6 +119,9 @@ static int do_ipv6_setsockopt(struct sock *sk, int level, int optname,
 
         valbool = (val!=0);
 
+        if (ip6_mroute_opt(optname))
+                return ip6_mroute_setsockopt(sk, optname, optval, optlen);
+
         lock_sock(sk);
 
         switch (optname) {
@@ -790,6 +794,9 @@ static int do_ipv6_getsockopt(struct sock *sk, int level, int optname,
         int len;
         int val;
 
+        if (ip6_mroute_opt(optname))
+                return ip6_mroute_getsockopt(sk, optname, optval, optlen);
+
         if (get_user(len, optlen))
                 return -EFAULT;
         switch (optname) {