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 | |
49 | union 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 | |
66 | struct 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 | |