1/* $NetBSD: label.h,v 1.7 2013/07/24 09:05:53 kefren Exp $ */
2
3/*-
4 * Copyright (c) 2010 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * This code is derived from software contributed to The NetBSD Foundation
8 * by Mihai Chelaru <kefren@NetBSD.org>
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 *    notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 *    notice, this list of conditions and the following disclaimer in the
17 *    documentation and/or other materials provided with the distribution.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29 * POSSIBILITY OF SUCH DAMAGE.
30 */
31
32#ifndef _LABEL_H_
33#define _LABEL_H_
34
35#include <sys/rbtree.h>
36
37#include "mpls_routes.h"
38#include "ldp_peer.h"
39
40#define	REATT_INET_CHANGE	0
41#define	REATT_INET_DEL		1
42#define	REATT_INET_NODEL	2
43
44/*
45 * MPLS label descriptor
46 *
47 * so_dest, so_pref and so_gate are the prefix identification and its GW
48 * binding is the local label
49 * label is the peer associated label
50 */
51struct label {
52	union sockunion so_dest, so_pref, so_gate;
53	int binding, label;
54	bool host;	/* change routes using RTF_HOST */
55	const struct ldp_peer *p;
56	rb_node_t lbtree;
57};
58
59void            label_init(void);
60struct label *	label_add(const union sockunion *, const union sockunion *,
61	  const union sockunion *, uint32_t, const struct ldp_peer *, uint32_t,
62	  bool);
63void            label_del(struct label *);
64void            del_all_peer_labels(const struct ldp_peer*, int);
65void		label_reattach_all_peer_labels(const struct ldp_peer*, int);
66void            label_del_by_binding(uint32_t, int);
67struct label *	label_get(const union sockunion *sodest,
68	const union sockunion *sopref);
69struct label *	label_get_by_prefix(const struct sockaddr *, int);
70uint32_t	get_free_local_label(void);
71void		announce_label_change(struct label *);
72void		label_reattach_route(struct label*, int);
73void		label_check_assoc(struct ldp_peer *p);
74struct label *	label_get_right(struct label *);
75
76#endif /* !_LABEL_H_ */
77