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   1 /* -*- Mode: c; tab-width: 8; indent-tabs-mode: 1; c-basic-offset: 8; -*- */
   2 /*
   3  * Copyright (c) 2003  -        The tcpdump group.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
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   7  * are met:
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   9  *    notice, this list of conditions and the following disclaimer.
  10  * 2. Redistributions in binary form must reproduce the above copyright
  11  *    notice, this list of conditions and the following disclaimer in the
  12  *    documentation and/or other materials provided with the distribution.
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  14  *    to endorse or promote products derived from this software without
  15  *    specific prior written permission.
  16  *
  17  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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  25  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  26  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  27  * SUCH DAMAGE.
  28  *
  29  * @(#) $Header: /tcpdump/master/libpcap/Attic/rawss7.h,v 1.1 2003-09-10 19:55:36 mcr Exp $ (LBL)
  30  */
  31
  32 /*
  33  * This file is never used in libpcap or tcpdump. It is provided as
  34  * documentation linktypes 139 through 142 only.
  35  */
  36
  37 /*
  38  * Date: Tue, 09 Sep 2003 09:41:04 -0400
  39  * From: Jeff Morriss <jeff.morriss[AT]ulticom.com>
  40  * To: tcpdump-workers@tcpdump.org
  41  * Subject: [tcpdump-workers] request for LINKTYPE_
  42  *
  43  * We've had some discussion over on ethereal-dev about a "fake link" or
  44  * "raw SS7" dissector that allows dumping an arbitrary protocol into a
  45  * file without any (otherwise necessary) lower level protocols.  The
  46  * common example has been dumping MTP3 into a file without, well, MTP2 or
  47  * M2PA.
  48  *
  49  * We want to store these protocols directly in PCAP file format because
  50  * it's well defined and there isn't another (popular) file format for
  51  * capturing SS7 messages that we can reverse engineer (and we want to read
  52  * these files into Ethereal).  Rather than creating a new file format, it's
  53  * a lot easier to just allocate a LINKTYPE_.
  54  *
  55  * Here is the original post thread:
  56  *
  57  * http://ethereal.com/lists/ethereal-dev/200306/threads.html#00200
  58  *
  59  * July's thread on the subject:
  60  *
  61  * http://ethereal.com/lists/ethereal-dev/200307/threads.html#00124
  62  *
  63  * August's thread:
  64  *
  65  * http://ethereal.com/lists/ethereal-dev/200308/threads.html#00193
  66  *
  67  *
  68  * and one of the last messages--which is why I'm mailing you today:
  69  *
  70  * http://ethereal.com/lists/ethereal-dev/200308/msg00193.html
  71  *
  72  *
  73  * Based on the message in the last URL, I'd like to request a new
  74  * LINKTYPE_:  LINKTYPE_RAWSS7.
  75  *
  76  * This packets in this file type will contain a header:
  77  */
  78
  79 typedef struct _rawss7_hdr {
  80          /* NOTE: These are in network-byte order. */
  81          guint32 type;
  82          guint16 length;
  83          guint16 spare;
  84 } rawss7_hdr;
  85
  86 /*
  87  *
  88  * followed by protocol data for whatever protocol 'type' indicates.
  89  *
  90  * There was some discussion about these protocol 'type's being allocated by
  91  * tcpdump-workers as well.  In fact it would be handy to have one place to
  92  * allocate such numbers, so what do you think about allocating 3 more (for
  93  * now) LINKTYPE_'s:
  94  */
  95
  96 #define LINKTYPE_RAWSS7_MTP2    140
  97 #define LINKTYPE_RAWSS7_MTP3    141
  98 #define LINKTYPE_RAWSS7_SCCP    142
  99
 100 /*
 101  *
 102  *  There is no reason this can't be used to store non-SS7 protocols, but
 103  *  it's what we need to use it for now...
 104  *
 105  */