net: add fib_rules_ops to flush_cache method

This is required to pass namespace context into rt_cache_flush called from
->flush_cache.

Signed-off-by: Denis V. Lunev <den@openvz.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/include/net/fib_rules.h b/include/net/fib_rules.h
index a5c6ccc..c2bb5ca 100644
--- a/include/net/fib_rules.h
+++ b/include/net/fib_rules.h
@@ -62,7 +62,7 @@
 
 	/* Called after modifications to the rules set, must flush
 	 * the route cache if one exists. */
-	void			(*flush_cache)(void);
+	void			(*flush_cache)(struct fib_rules_ops *ops);
 
 	int			nlgroup;
 	const struct nla_policy	*policy;