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f6eb6b20 GL |
1 | /* |
2 | * Copyright (c) 2011 Gaetano Catalli. | |
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 RTBSD_H | |
18 | #define RTBSD_H 1 | |
19 | ||
20 | #include "list.h" | |
21 | ||
22 | /* | |
23 | * A digested version of a message received from a PF_ROUTE socket which | |
24 | * indicates that a network device has been created or destroyed or changed. | |
25 | */ | |
26 | struct rtbsd_change { | |
27 | /* Copied from struct if_msghdr. */ | |
28 | int msg_type; /* e.g. XXX. */ | |
29 | ||
30 | /* Copied from struct if_msghdr. */ | |
31 | int if_index; /* Index of network device. */ | |
32 | ||
33 | char if_name[IF_NAMESIZE]; /* Name of network device. */ | |
34 | int master_ifindex; /* Ifindex of datapath master (0 if none). */ | |
35 | }; | |
36 | ||
37 | /* | |
38 | * Function called to report that a netdev has changed. 'change' describes the | |
39 | * specific change. It may be null if the buffer of change information | |
40 | * overflowed, in which case the function must assume that every device may | |
41 | * have changed. 'aux' is as specified in the call to | |
42 | * rtbsd_notifier_register(). | |
43 | */ | |
44 | typedef void rtbsd_notify_func(const struct rtbsd_change *, void *aux); | |
45 | ||
46 | struct rtbsd_notifier { | |
47 | struct list node; | |
48 | rtbsd_notify_func *cb; | |
49 | void *aux; | |
50 | }; | |
51 | ||
52 | int rtbsd_notifier_register(struct rtbsd_notifier *, | |
53 | rtbsd_notify_func *, void *aux); | |
54 | void rtbsd_notifier_unregister(struct rtbsd_notifier *); | |
55 | void rtbsd_notifier_run(void); | |
56 | void rtbsd_notifier_wait(void); | |
57 | ||
58 | #endif /* rtbsd.h */ |