dist/tcpdump/igrp.h

   1 /*      $NetBSD$        */
   2
   3 /* @(#) Header: /tcpdump/master/tcpdump/igrp.h,v 1.6 2002/12/11 07:13:52 guy Exp (LBL) */
   4 /* Cisco IGRP definitions */
   5
   6 /* IGRP Header */
   7
   8 struct igrphdr {
   9         u_int8_t ig_vop;        /* protocol version number / opcode */
  10 #define IGRP_V(x)       (((x) & 0xf0) >> 4)
  11 #define IGRP_OP(x)      ((x) & 0x0f)
  12         u_int8_t ig_ed;         /* edition number */
  13         u_int16_t ig_as;        /* autonomous system number */
  14         u_int16_t ig_ni;        /* number of subnet in local net */
  15         u_int16_t ig_ns;        /* number of networks in AS */
  16         u_int16_t ig_nx;        /* number of networks ouside AS */
  17         u_int16_t ig_sum;       /* checksum of IGRP header & data */
  18 };
  19
  20 #define IGRP_UPDATE     1
  21 #define IGRP_REQUEST    2
  22
  23 /* IGRP routing entry */
  24
  25 struct igrprte {
  26         u_int8_t igr_net[3];    /* 3 significant octets of IP address */
  27         u_int8_t igr_dly[3];    /* delay in tens of microseconds */
  28         u_int8_t igr_bw[3];     /* bandwidth in units of 1 kb/s */
  29         u_int8_t igr_mtu[2];    /* MTU in octets */
  30         u_int8_t igr_rel;       /* percent packets successfully tx/rx */
  31         u_int8_t igr_ld;        /* percent of channel occupied */
  32         u_int8_t igr_hct;       /* hop count */
  33 };
  34
  35 #define IGRP_RTE_SIZE   14      /* don't believe sizeof ! */