net/dcb/dcbevent.c

   1 /*
   2  * Copyright (c) 2010, Intel Corporation.
   3  *
   4  * This program is free software; you can redistribute it and/or modify it
   5  * under the terms and conditions of the GNU General Public License,
   6  * version 2, as published by the Free Software Foundation.
   7  *
   8  * This program is distributed in the hope it will be useful, but WITHOUT
   9  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  10  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  11  * more details.
  12  *
  13  * You should have received a copy of the GNU General Public License along with
  14  * this program; if not, write to the Free Software Foundation, Inc., 59 Temple
  15  * Place - Suite 330, Boston, MA 02111-1307 USA.
  16  *
  17  * Author: John Fastabend <john.r.fastabend@intel.com>
  18  */
  19
  20 #include <linux/rtnetlink.h>
  21 #include <linux/notifier.h>
  22 #include <linux/export.h>
  23
  24 static ATOMIC_NOTIFIER_HEAD(dcbevent_notif_chain);
  25
  26 int register_dcbevent_notifier(struct notifier_block *nb)
  27 {
  28         return atomic_notifier_chain_register(&dcbevent_notif_chain, nb);
  29 }
  30 EXPORT_SYMBOL(register_dcbevent_notifier);
  31
  32 int unregister_dcbevent_notifier(struct notifier_block *nb)
  33 {
  34         return atomic_notifier_chain_unregister(&dcbevent_notif_chain, nb);
  35 }
  36 EXPORT_SYMBOL(unregister_dcbevent_notifier);
  37
  38 int call_dcbevent_notifiers(unsigned long val, void *v)
  39 {
  40         return atomic_notifier_call_chain(&dcbevent_notif_chain, val, v);
  41 }