--- zzzz-none-000/linux-4.4.60/net/l2tp/l2tp_core.h	2017-04-08 07:53:53.000000000 +0000
+++ honeybee-1240e-714/linux-4.4.60/net/l2tp/l2tp_core.h	2019-07-03 09:21:34.000000000 +0000
@@ -247,6 +247,8 @@
 struct l2tp_session *l2tp_session_find_by_ifname(struct net *net, char *ifname);
 struct l2tp_tunnel *l2tp_tunnel_find(struct net *net, u32 tunnel_id);
 struct l2tp_tunnel *l2tp_tunnel_find_nth(struct net *net, int nth);
+void l2tp_stats_update(struct l2tp_tunnel *tunnel, struct l2tp_session *session,
+		       struct l2tp_stats *stats);
 
 int l2tp_tunnel_create(struct net *net, int fd, int version, u32 tunnel_id,
 		       u32 peer_tunnel_id, struct l2tp_tunnel_cfg *cfg,