sys/netmpls/mpls.h

   1 /*      $NetBSD: mpls.h,v 1.1 2010/06/26 14:24:28 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 _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 } __packed;
  72
  73
  74 #endif /* !_NETMPLS_MPLS_H_ */