2 * Copyright (c) 2009, 2015 Nicira, Inc.
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_LINK_H
18 #define RTNETLINK_LINK_H 1
22 #include <linux/if_ether.h>
25 #include "openvswitch/types.h"
30 /* These functions are Linux specific, so they should be used directly only by
31 * Linux-specific code. */
33 /* A digested version of an rtnetlink_link message sent down by the kernel to
34 * indicate that a network device's status (link or address) has been changed.
36 struct rtnetlink_change {
37 /* Copied from struct nlmsghdr. */
38 int nlmsg_type; /* e.g. RTM_NEWLINK, RTM_DELLINK. */
40 /* Common attributes. */
41 int if_index; /* Index of network device. */
42 char ifname[IFNAMSIZ]; /* Name of network device. */
44 /* Network device link status. */
45 int master_ifindex; /* Ifindex of datapath master (0 if none). */
46 int mtu; /* Current MTU. */
48 unsigned int ifi_flags; /* Flags of network device. */
50 /* Network device address status. */
51 /* xxx To be added when needed. */
54 /* Function called to report that a netdev has changed. 'change' describes the
55 * specific change. It may be null if the buffer of change information
56 * overflowed, in which case the function must assume that every device may
57 * have changed. 'aux' is as specified in the call to
58 * rtnetlink_notifier_register(). */
60 void rtnetlink_notify_func(const struct rtnetlink_change *change,
63 bool rtnetlink_type_is_rtnlgrp_link(uint16_t type);
64 bool rtnetlink_type_is_rtnlgrp_addr(uint16_t type);
65 bool rtnetlink_parse(struct ofpbuf *buf, struct rtnetlink_change *change);
67 rtnetlink_notifier_create(rtnetlink_notify_func *, void *aux);
68 void rtnetlink_notifier_destroy(struct nln_notifier *);
69 void rtnetlink_run(void);
70 void rtnetlink_wait(void);
71 #endif /* rtnetlink.h */