rtnetlink: make rtnl_register accept a flags parameter

This change allows us to later indicate to rtnetlink core that certain
doit functions should be called without acquiring rtnl_mutex.

This change should have no effect, we simply replace the last (now
unused) calcit argument with the new flag.

Signed-off-by: Florian Westphal <fw@strlen.de>
Reviewed-by: Hannes Frederic Sowa <hannes@stressinduktion.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/include/net/rtnetlink.h b/include/net/rtnetlink.h
index abe6b73..ac32460 100644
--- a/include/net/rtnetlink.h
+++ b/include/net/rtnetlink.h
@@ -7,12 +7,11 @@
 typedef int (*rtnl_doit_func)(struct sk_buff *, struct nlmsghdr *,
 			      struct netlink_ext_ack *);
 typedef int (*rtnl_dumpit_func)(struct sk_buff *, struct netlink_callback *);
-typedef u16 (*rtnl_calcit_func)(struct sk_buff *, struct nlmsghdr *);
 
 int __rtnl_register(int protocol, int msgtype,
-		    rtnl_doit_func, rtnl_dumpit_func, rtnl_calcit_func);
+		    rtnl_doit_func, rtnl_dumpit_func, unsigned int flags);
 void rtnl_register(int protocol, int msgtype,
-		   rtnl_doit_func, rtnl_dumpit_func, rtnl_calcit_func);
+		   rtnl_doit_func, rtnl_dumpit_func, unsigned int flags);
 int rtnl_unregister(int protocol, int msgtype);
 void rtnl_unregister_all(int protocol);