2 * Copyright (c) 2009 Nicira Networks.
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.
17 #ifndef RTNETLINK_ROUTE_H
18 #define RTNETLINK_ROUTE_H 1
24 struct rtnetlink_notifier;
26 /* A digested version of a route message sent down by the kernel to indicate
27 * that a route has changed. */
28 struct rtnetlink_route_change {
29 /* Copied from struct nlmsghdr. */
30 int nlmsg_type; /* e.g. RTM_NEWROUTE, RTM_DELROUTE. */
32 /* Copied from struct rtmsg. */
33 unsigned char rtm_dst_len;
35 /* Extracted from Netlink attributes. */
36 uint32_t rta_dst; /* Destination in host byte order. 0 if missing. */
37 int rta_oif; /* Output interface index. */
40 /* Function called to report that a route has changed. 'change' describes
41 * the specific change. It may be null, in which case the function must assume
42 * everything has changed. 'aux' is as specified in the call to
43 * rtnetlink_route_notifier_register(). */
45 void rtnetlink_route_notify_func(const struct rtnetlink_route_change *change,
48 bool rtnetlink_route_parse(struct ofpbuf *, struct rtnetlink_route_change *);
49 int rtnetlink_route_notifier_register(struct rtnetlink_notifier *,
50 rtnetlink_route_notify_func *, void *aux);
51 void rtnetlink_route_notifier_unregister(struct rtnetlink_notifier *);
52 void rtnetlink_route_notifier_run(void);
53 void rtnetlink_route_notifier_wait(void);
55 #endif /* rtnetlink-route.h */