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git.proxmox.com Git - ovs.git/blob - lib/netlink-notifier.h
2 * Copyright (c) 2009 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 NETLINK_NOTIFIER_H
18 #define NETLINK_NOTIFIER_H 1
20 /* These functions are Linux specific, so they should be used directly only by
21 * Linux-specific code. */
23 #include "openvswitch/list.h"
31 /* Function called to report netlink notifications. 'change' describes the
32 * specific change filled out by an nln_parse_func. It may be null if the
33 * buffer of change information overflowed, in which case the function must
34 * assume that everything may have changed. 'aux' is as specified in
35 * nln_notifier_register(). */
36 typedef void nln_notify_func(const void *change
, void *aux
);
38 /* Function called to parse incoming nln notifications. The 'buf' message
39 * should be parsed into 'change' as specified in nln_create().
40 * Returns the multicast_group the change belongs to, or 0 for a parse error.
42 typedef int nln_parse_func(struct ofpbuf
*buf
, void *change
);
44 struct nln
*nln_create(int protocol
, nln_parse_func
*, void *change
);
45 void nln_destroy(struct nln
*);
46 struct nln_notifier
*nln_notifier_create(struct nln
*, int multicast_group
,
47 nln_notify_func
*, void *aux
);
48 void nln_notifier_destroy(struct nln_notifier
*);
49 void nln_run(struct nln
*);
50 void nln_wait(struct nln
*);
51 void nln_report(const struct nln
*nln
, void *change
, int group
);
52 #endif /* netlink-notifier.h */