#ifndef _NET_EVENT_H#define _NET_EVENT_H /* *	Generic netevent notifiers * *	Authors: *      Tom Tucker              <tom@opengridcomputing.com> *      Steve Wise              <swise@opengridcomputing.com> * * 	Changes: */#ifdef __KERNEL__ #include <net/dst.h> struct netevent_redirect {	struct dst_entry *old;	struct dst_entry *new;}; enum netevent_notif_type {	NETEVENT_NEIGH_UPDATE = 1, /* arg is struct neighbour ptr */	NETEVENT_PMTU_UPDATE,	   /* arg is struct dst_entry ptr */	NETEVENT_REDIRECT,	   /* arg is struct netevent_redirect ptr */}; extern int register_netevent_notifier(struct notifier_block *nb);extern int unregister_netevent_notifier(struct notifier_block *nb);extern int call_netevent_notifiers(unsigned long val, void *v); #endif#endif