root / lab4 / .minix-src / include / netmpls / mpls.h @ 13
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| 1 | 13 | up20180614 | /* $NetBSD: mpls.h,v 1.1 2010/06/26 14:24:28 kefren Exp $ */
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| 2 | |||
| 3 | /*-
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| 4 | * Copyright (c) 2010 The NetBSD Foundation, Inc.
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| 5 | * All rights reserved.
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| 6 | *
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| 7 | * This code is derived from software contributed to The NetBSD Foundation
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| 8 | * by Mihai Chelaru <kefren@NetBSD.org>
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| 9 | *
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| 10 | * Redistribution and use in source and binary forms, with or without
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| 11 | * modification, are permitted provided that the following conditions
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| 12 | * are met:
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| 13 | * 1. Redistributions of source code must retain the above copyright
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| 14 | * notice, this list of conditions and the following disclaimer.
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| 15 | * 2. Redistributions in binary form must reproduce the above copyright
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| 16 | * notice, this list of conditions and the following disclaimer in the
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| 17 | * documentation and/or other materials provided with the distribution.
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| 18 | *
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| 19 | * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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| 20 | * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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| 21 | * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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| 22 | * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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| 23 | * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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| 24 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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| 25 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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| 26 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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| 27 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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| 28 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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| 29 | * POSSIBILITY OF SUCH DAMAGE.
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| 30 | */
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| 31 | |||
| 32 | #ifndef _NETMPLS_MPLS_H_
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| 33 | #define _NETMPLS_MPLS_H_
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| 34 | |||
| 35 | #include <sys/param.h> |
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| 36 | #include <sys/time.h> |
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| 37 | #include <sys/proc.h> |
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| 38 | #include <sys/queue.h> |
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| 39 | |||
| 40 | #include <net/if.h> |
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| 41 | #include <net/if_dl.h> |
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| 42 | |||
| 43 | #define MPLS_LABEL_IPV4NULL 0 /* IPv4 Explicit NULL Label */ |
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| 44 | #define MPLS_LABEL_RTALERT 1 /* Router Alert Label */ |
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| 45 | #define MPLS_LABEL_IPV6NULL 2 /* IPv6 Explicit NULL Label */ |
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| 46 | #define MPLS_LABEL_IMPLNULL 3 /* Implicit NULL Label */ |
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| 47 | #define MPLS_LABEL_RESMAX 15 /* Maximum reserved Label */ |
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| 48 | |||
| 49 | union mpls_shim {
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| 50 | uint32_t s_addr; /* the whole shim */
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| 51 | struct {
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| 52 | #if BYTE_ORDER == LITTLE_ENDIAN
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| 53 | uint32_t ttl:8;
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| 54 | uint32_t bos:1;
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| 55 | uint32_t exp:3;
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| 56 | uint32_t label:20;
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| 57 | #else
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| 58 | uint32_t label:20;
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| 59 | uint32_t exp:3;
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| 60 | uint32_t bos:1;
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| 61 | uint32_t ttl:8;
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| 62 | #endif
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| 63 | } shim; |
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| 64 | }; |
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| 65 | |||
| 66 | struct sockaddr_mpls {
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| 67 | uint8_t smpls_len; |
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| 68 | uint8_t smpls_family; |
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| 69 | uint8_t smpls_pad[2];
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| 70 | union mpls_shim smpls_addr;
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| 71 | } __packed; |
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| 72 | |||
| 73 | |||
| 74 | #endif /* !_NETMPLS_MPLS_H_ */ |