net: Add compat support for getsockopt (MCAST_MSFILTER)

This patch adds support for getsockopt for MCAST_MSFILTER for
both IPv4 and IPv6. It depends on the previous setsockopt patch,
and uses the same method.

Signed-off-by: David L Stevens <dlstevens@us.ibm.com>
Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 4 insertions, 0 deletions

diff --git a/net/ipv6/ipv6_sockglue.c b/net/ipv6/ipv6_sockglue.c
index db6fdc1498aa..b4a26f2505f8 100644
--- a/net/ipv6/ipv6_sockglue.c
+++ b/net/ipv6/ipv6_sockglue.c
@@ -1089,6 +1089,10 @@ int ipv6_getsockopt(struct sock *sk, int level, int optname,
         if(level != SOL_IPV6)
                 return -ENOPROTOOPT;
 
+        if (optname == MCAST_MSFILTER)
+                return compat_mc_getsockopt(sk, level, optname, optval, optlen,
+                        ipv6_getsockopt);
+
         err = do_ipv6_getsockopt(sk, level, optname, optval, optlen);
 #ifdef CONFIG_NETFILTER
         /* we need to exclude all possible ENOPROTOOPTs except default case */