[NETNS]: Add namespace parameter to __ip_route_output_key.

This is only required to propagate it down to the
ip_route_output_slow.

Signed-off-by: Denis V. Lunev <den@openvz.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/include/net/route.h b/include/net/route.h
index 5847e6f..3e3b14e 100644
--- a/include/net/route.h
+++ b/include/net/route.h
@@ -110,7 +110,7 @@
 extern void		ip_rt_redirect(__be32 old_gw, __be32 dst, __be32 new_gw,
 				       __be32 src, struct net_device *dev);
 extern void		rt_cache_flush(int how);
-extern int		__ip_route_output_key(struct rtable **, const struct flowi *flp);
+extern int		__ip_route_output_key(struct net *, struct rtable **, const struct flowi *flp);
 extern int		ip_route_output_key(struct rtable **, struct flowi *flp);
 extern int		ip_route_output_flow(struct rtable **rp, struct flowi *flp, struct sock *sk, int flags);
 extern int		ip_route_input(struct sk_buff*, __be32 dst, __be32 src, u8 tos, struct net_device *devin);
@@ -158,7 +158,7 @@
 
 	int err;
 	if (!dst || !src) {
-		err = __ip_route_output_key(rp, &fl);
+		err = __ip_route_output_key(&init_net, rp, &fl);
 		if (err)
 			return err;
 		fl.fl4_dst = (*rp)->rt_dst;