1/* $NetBSD: mpls.h,v 1.2 2016/10/08 20:19:37 joerg 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 _NETMPLS_MPLS_H_
33#define _NETMPLS_MPLS_H_
34
35#include <sys/param.h>
36#include <sys/time.h>
37#include <sys/proc.h>
38#include <sys/queue.h>
39
40#include <net/if.h>
41#include <net/if_dl.h>
42
43#define MPLS_LABEL_IPV4NULL 0 /* IPv4 Explicit NULL Label */
44#define MPLS_LABEL_RTALERT 1 /* Router Alert Label */
45#define MPLS_LABEL_IPV6NULL 2 /* IPv6 Explicit NULL Label */
46#define MPLS_LABEL_IMPLNULL 3 /* Implicit NULL Label */
47#define MPLS_LABEL_RESMAX 15 /* Maximum reserved Label */
48
49union mpls_shim {
50 uint32_t s_addr; /* the whole shim */
51 struct {
52#if BYTE_ORDER == LITTLE_ENDIAN
53 uint32_t ttl:8;
54 uint32_t bos:1;
55 uint32_t exp:3;
56 uint32_t label:20;
57#else
58 uint32_t label:20;
59 uint32_t exp:3;
60 uint32_t bos:1;
61 uint32_t ttl:8;
62#endif
63 } shim;
64};
65
66struct sockaddr_mpls {
67 uint8_t smpls_len;
68 uint8_t smpls_family;
69 uint8_t smpls_pad[2];
70 union mpls_shim smpls_addr;
71};
72__CTASSERT(sizeof(struct sockaddr_mpls) == 8);
73
74#endif /* !_NETMPLS_MPLS_H_ */
75