2 * Copyright (c) 2019 Ilya Maximets <i.maximets@ovn.org>.
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:
8 * http://www.apache.org/licenses/LICENSE-2.0
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.
18 #include "openvswitch/compiler.h"
19 #include "openvswitch/thread.h"
20 #include "openvswitch/util.h"
21 #include "if-notifier.h"
23 /* Implementation of a manual interface notifier.
25 * Intended for catching interface events that could not be tracked by
26 * OS specific interface notifiers, e.g. iface updates in netdev-dpdk.
27 * For that purpose 'if_notifier_manual_report()' should be called directly
28 * by the code that aware of interface changes.
32 * This notifier is thread-safe in terms of calling its functions from
33 * different thread contexts, however if the callback passed to
34 * 'if_notifier_manual_set_cb' is used by some other code (i.e. by OS
35 * specific notifiers) it must be thread-safe itself.
38 static struct ovs_mutex manual_notifier_mutex
= OVS_MUTEX_INITIALIZER
;
39 static if_notify_func
*notify
OVS_GUARDED_BY(manual_notifier_mutex
) = NULL
;
42 if_notifier_manual_set_cb(if_notify_func
*cb
)
44 ovs_mutex_lock(&manual_notifier_mutex
);
46 ovs_mutex_unlock(&manual_notifier_mutex
);
50 if_notifier_manual_report(void)
52 ovs_mutex_lock(&manual_notifier_mutex
);
56 ovs_mutex_unlock(&manual_notifier_mutex
);