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 #ifndef _LINUXKPI_NET_NETEVENT_H_
30 #define _LINUXKPI_NET_NETEVENT_H_
31
32 #include <sys/types.h>
33 #include <sys/eventhandler.h>
34
35 #include <linux/notifier.h>
36
37 enum netevent_notif_type {
38 NETEVENT_NEIGH_UPDATE = 0,
39 #if 0 /* Unsupported events. */
40 NETEVENT_PMTU_UPDATE,
41 NETEVENT_REDIRECT,
42 #endif
43 };
44
45 struct llentry;
46
47 static inline void
_handle_arp_update_event(void * arg,struct llentry * lle,int evt __unused)48 _handle_arp_update_event(void *arg, struct llentry *lle, int evt __unused)
49 {
50 struct notifier_block *nb;
51
52 nb = arg;
53 nb->notifier_call(nb, NETEVENT_NEIGH_UPDATE, lle);
54 }
55
56 static inline int
register_netevent_notifier(struct notifier_block * nb)57 register_netevent_notifier(struct notifier_block *nb)
58 {
59 nb->tags[NETEVENT_NEIGH_UPDATE] = EVENTHANDLER_REGISTER(
60 lle_event, _handle_arp_update_event, nb, 0);
61 return (0);
62 }
63
64 static inline int
unregister_netevent_notifier(struct notifier_block * nb)65 unregister_netevent_notifier(struct notifier_block *nb)
66 {
67
68 EVENTHANDLER_DEREGISTER(lle_event, nb->tags[NETEVENT_NEIGH_UPDATE]);
69
70 return (0);
71 }
72
73 #endif /* _LINUXKPI_NET_NETEVENT_H_ */
74