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21d6e22e EJ |
1 | /* |
2 | * Copyright (c) 2009 Nicira Networks. | |
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 | #ifndef RTNETLINK_LINK_H | |
18 | #define RTNETLINK_LINK_H 1 | |
19 | ||
ea83a2fc EJ |
20 | #include <stdbool.h> |
21 | ||
22 | struct ofpbuf; | |
0a811051 | 23 | struct nln_notifier; |
21d6e22e EJ |
24 | |
25 | /* These functions are Linux specific, so they should be used directly only by | |
26 | * Linux-specific code. */ | |
27 | ||
28 | /* A digested version of an rtnetlink_link message sent down by the kernel to | |
29 | * indicate that a network device has been created, destroyed or changed. */ | |
30 | struct rtnetlink_link_change { | |
31 | /* Copied from struct nlmsghdr. */ | |
32 | int nlmsg_type; /* e.g. RTM_NEWLINK, RTM_DELLINK. */ | |
33 | ||
34 | /* Copied from struct ifinfomsg. */ | |
35 | int ifi_index; /* Index of network device. */ | |
36 | ||
37 | /* Extracted from Netlink attributes. */ | |
38 | const char *ifname; /* Name of network device. */ | |
39 | int master_ifindex; /* Ifindex of datapath master (0 if none). */ | |
40 | }; | |
41 | ||
42 | /* Function called to report that a netdev has changed. 'change' describes the | |
43 | * specific change. It may be null if the buffer of change information | |
44 | * overflowed, in which case the function must assume that every device may | |
45 | * have changed. 'aux' is as specified in the call to | |
46 | * rtnetlink_link_notifier_register(). */ | |
47 | typedef | |
48 | void rtnetlink_link_notify_func(const struct rtnetlink_link_change *change, | |
49 | void *aux); | |
50 | ||
ea83a2fc EJ |
51 | bool rtnetlink_link_parse(struct ofpbuf *buf, |
52 | struct rtnetlink_link_change *change); | |
0a811051 | 53 | int rtnetlink_link_notifier_register(struct nln_notifier*, |
21d6e22e | 54 | rtnetlink_link_notify_func *, void *aux); |
0a811051 | 55 | void rtnetlink_link_notifier_unregister(struct nln_notifier *); |
18a23781 EJ |
56 | void rtnetlink_link_run(void); |
57 | void rtnetlink_link_wait(void); | |
21d6e22e | 58 | #endif /* rtnetlink-link.h */ |