ipv4: ip_route_output_key() is better as an inline.

This avoid a stack frame at zero cost.

Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 5 insertions, 1 deletions

diff --git a/include/net/route.h b/include/net/route.h
index 088a1867348..60daf745216 100644
--- a/include/net/route.h
+++ b/include/net/route.h
@@ -119,11 +119,15 @@ extern void		ip_rt_redirect(__be32 old_gw, __be32 dst, __be32 new_gw,
 extern void             rt_cache_flush(struct net *net, int how);
 extern void             rt_cache_flush_batch(struct net *net);
 extern struct rtable *__ip_route_output_key(struct net *, const struct flowi *flp);
-extern struct rtable *ip_route_output_key(struct net *, struct flowi *flp);
 extern struct rtable *ip_route_output_flow(struct net *, struct flowi *flp,
                                            struct sock *sk);
 extern struct dst_entry *ipv4_blackhole_route(struct net *net, struct dst_entry *dst_orig);
 
+static inline struct rtable *ip_route_output_key(struct net *net, struct flowi *flp)
+{
+        return ip_route_output_flow(net, flp, NULL);
+}
+
 extern int ip_route_input_common(struct sk_buff *skb, __be32 dst, __be32 src,
                                  u8 tos, struct net_device *devin, bool noref);