tcpdump.tproj/igrp.h

   1 /*
   2  * Copyright (c) 1999 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * "Portions Copyright (c) 1999 Apple Computer, Inc.  All Rights
   7  * Reserved.  This file contains Original Code and/or Modifications of
   8  * Original Code as defined in and that are subject to the Apple Public
   9  * Source License Version 1.0 (the 'License').  You may not use this file
  10  * except in compliance with the License.  Please obtain a copy of the
  11  * License at http://www.apple.com/publicsource and read it before using
  12  * this file.
  13  *
  14  * The Original Code and all software distributed under the License are
  15  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  16  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  17  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  18  * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
  19  * License for the specific language governing rights and limitations
  20  * under the License."
  21  *
  22  * @APPLE_LICENSE_HEADER_END@
  23  */
  24 /* Cisco IGRP definitions */
  25
  26 /* IGRP Header */
  27
  28 struct igrphdr {
  29 #ifdef WORDS_BIGENDIAN
  30         u_char ig_v:4;          /* protocol version number */
  31         u_char ig_op:4;         /* opcode */
  32 #else
  33         u_char ig_op:4;         /* opcode */
  34         u_char ig_v:4;          /* protocol version number */
  35 #endif
  36         u_char ig_ed;           /* edition number */
  37         u_short ig_as;          /* autonomous system number */
  38         u_short ig_ni;          /* number of subnet in local net */
  39         u_short ig_ns;          /* number of networks in AS */
  40         u_short ig_nx;          /* number of networks ouside AS */
  41         u_short ig_sum;         /* checksum of IGRP header & data */
  42 };
  43
  44 #define IGRP_UPDATE     1
  45 #define IGRP_REQUEST    2
  46
  47 /* IGRP routing entry */
  48
  49 struct igrprte {
  50         u_char igr_net[3];      /* 3 significant octets of IP address */
  51         u_char igr_dly[3];      /* delay in tens of microseconds */
  52         u_char igr_bw[3];       /* bandwidth in units of 1 kb/s */
  53         u_char igr_mtu[2];      /* MTU in octets */
  54         u_char igr_rel;         /* percent packets successfully tx/rx */
  55         u_char igr_ld;          /* percent of channel occupied */
  56         u_char igr_hct;         /* hop count */
  57 };
  58
  59 #define IGRP_RTE_SIZE   14      /* don't believe sizeof ! */