lib/if-notifier.c

   1 /*
   2  * Copyright (c) 2015 Red Hat, Inc.
   3  *
   4  * Licensed under the Apache License, Version 2.0 (the "License");
   5  * you may not use this file except in compliance with the License.
   6  * You may obtain a copy of the License at:
   7  *
   8  *     http://www.apache.org/licenses/LICENSE-2.0
   9  *
  10  * Unless required by applicable law or agreed to in writing, software
  11  * distributed under the License is distributed on an "AS IS" BASIS,
  12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13  * See the License for the specific language governing permissions and
  14  * limitations under the License.
  15  */
  16
  17 #include <config.h>
  18 #include "if-notifier.h"
  19 #include "rtnetlink.h"
  20 #include "util.h"
  21
  22 struct if_notifier {
  23     struct nln_notifier *notifier;
  24     if_notify_func *cb;
  25     void *aux;
  26 };
  27
  28 static void
  29 if_notifier_cb(const struct rtnetlink_change *change OVS_UNUSED, void *aux)
  30 {
  31     struct if_notifier *notifier;
  32     notifier = aux;
  33     notifier->cb(notifier->aux);
  34 }
  35
  36 struct if_notifier *
  37 if_notifier_create(if_notify_func *cb, void *aux)
  38 {
  39     struct if_notifier *notifier;
  40     notifier = xmalloc(sizeof *notifier);
  41     notifier->cb = cb;
  42     notifier->aux = aux;
  43     notifier->notifier = rtnetlink_notifier_create(if_notifier_cb, notifier);
  44     return notifier;
  45 }
  46
  47 void
  48 if_notifier_destroy(struct if_notifier *notifier)
  49 {
  50     if (notifier) {
  51         rtnetlink_notifier_destroy(notifier->notifier);
  52         free(notifier);
  53     }
  54 }
  55
  56 void
  57 if_notifier_run(void)
  58 {
  59     rtnetlink_run();
  60 }
  61
  62 void
  63 if_notifier_wait(void)
  64 {
  65     rtnetlink_wait();
  66 }