netevent.h revision 271127 
1/*-
2 * Copyright (c) 2010 Isilon Systems, Inc.
3 * Copyright (c) 2010 iX Systems, Inc.
4 * Copyright (c) 2010 Panasas, Inc.
5 * Copyright (c) 2013, 2014 Mellanox Technologies, Ltd.
6 * All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 *    notice unmodified, this list of conditions, and the following
13 *    disclaimer.
14 * 2. Redistributions in binary form must reproduce the above copyright
15 *    notice, this list of conditions and the following disclaimer in the
16 *    documentation and/or other materials provided with the distribution.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
19 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
20 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
21 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
22 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
23 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
24 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
25 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
26 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
27 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28 */
29
30#ifndef	_LINUX_NET_NETEVENT_H_
31#define	_LINUX_NET_NETEVENT_H_
32
33#include <netinet/if_ether.h>
34
35enum netevent_notif_type {
36	NETEVENT_NEIGH_UPDATE = 0,
37#if 0 /* Unsupported events. */
38        NETEVENT_PMTU_UPDATE,
39        NETEVENT_REDIRECT,
40#endif
41};
42
43struct llentry;
44
45static inline void
46_handle_arp_update_event(void *arg, struct llentry *lle, int evt __unused)
47{
48	struct notifier_block *nb;
49
50	nb = arg;
51	nb->notifier_call(nb, NETEVENT_NEIGH_UPDATE, lle);
52}
53
54static inline int
55register_netevent_notifier(struct notifier_block *nb)
56{
57	nb->tags[NETEVENT_NEIGH_UPDATE] = EVENTHANDLER_REGISTER(
58	    lle_event, _handle_arp_update_event, nb, 0);
59	return (0);
60}
61
62static inline int
63unregister_netevent_notifier(struct notifier_block *nb)
64{
65
66	EVENTHANDLER_DEREGISTER(lle_event, nb->tags[NETEVENT_NEIGH_UPDATE]);
67
68	return (0);
69}
70
71#endif /* _LINUX_NET_NETEVENT_H_ */
72