[NETNS]: Tcp-v6 sockets per-net lookup.

Add a net argument to inet6_lookup and propagate it further.
Actually, this is tcp-v6 implementation of what was done for
tcp-v4 sockets in a previous patch.

Signed-off-by: Pavel Emelyanov <xemul@openvz.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/ipv4/inet_diag.c b/net/ipv4/inet_diag.c
index 95c9f14..da97695 100644
--- a/net/ipv4/inet_diag.c
+++ b/net/ipv4/inet_diag.c
@@ -274,7 +274,7 @@
 	}
 #if defined(CONFIG_IPV6) || defined (CONFIG_IPV6_MODULE)
 	else if (req->idiag_family == AF_INET6) {
-		sk = inet6_lookup(hashinfo,
+		sk = inet6_lookup(&init_net, hashinfo,
 				  (struct in6_addr *)req->id.idiag_dst,
 				  req->id.idiag_dport,
 				  (struct in6_addr *)req->id.idiag_src,