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 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 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 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