print-igrp.c revision 98524
1164190Sjkoshy/* 2164190Sjkoshy * Copyright (c) 1996, 1997 3164190Sjkoshy * The Regents of the University of California. All rights reserved. 4164190Sjkoshy * 5164190Sjkoshy * Redistribution and use in source and binary forms, with or without 6164190Sjkoshy * modification, are permitted provided that: (1) source code distributions 7164190Sjkoshy * retain the above copyright notice and this paragraph in its entirety, (2) 8164190Sjkoshy * distributions including binary code include the above copyright notice and 9164190Sjkoshy * this paragraph in its entirety in the documentation or other materials 10164190Sjkoshy * provided with the distribution, and (3) all advertising materials mentioning 11164190Sjkoshy * features or use of this software display the following acknowledgement: 12164190Sjkoshy * ``This product includes software developed by the University of California, 13164190Sjkoshy * Lawrence Berkeley Laboratory and its contributors.'' Neither the name of 14164190Sjkoshy * the University nor the names of its contributors may be used to endorse 15164190Sjkoshy * or promote products derived from this software without specific prior 16164190Sjkoshy * written permission. 17164190Sjkoshy * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED 18164190Sjkoshy * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF 19164190Sjkoshy * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. 20164190Sjkoshy * 21164190Sjkoshy * Initial contribution from Francis Dupont (francis.dupont@inria.fr) 22164190Sjkoshy */ 23164190Sjkoshy 24164190Sjkoshy#ifndef lint 25164190Sjkoshystatic const char rcsid[] = 26164190Sjkoshy "@(#) $Header: /tcpdump/master/tcpdump/print-igrp.c,v 1.16 2001/06/15 22:17:32 fenner Exp $ (LBL)"; 27164190Sjkoshy#endif 28164190Sjkoshy 29164190Sjkoshy#ifdef HAVE_CONFIG_H 30164190Sjkoshy#include "config.h" 31164190Sjkoshy#endif 32164190Sjkoshy 33164190Sjkoshy#include <sys/param.h> 34164190Sjkoshy#include <sys/types.h> /* concession to AIX */ 35164190Sjkoshy#include <sys/socket.h> 36164190Sjkoshy 37164190Sjkoshy#include <netinet/in.h> 38164190Sjkoshy 39164190Sjkoshy#include <errno.h> 40164190Sjkoshy#include <stdio.h> 41164190Sjkoshy 42164190Sjkoshy#include "interface.h" 43164190Sjkoshy#include "addrtoname.h" 44164190Sjkoshy#include "igrp.h" 45164190Sjkoshy#include "ip.h" 46164190Sjkoshy#include "extract.h" /* must come after interface.h */ 47164190Sjkoshy 48164190Sjkoshystatic void 49164190Sjkoshyigrp_entry_print(register struct igrprte *igr, register int is_interior, 50164190Sjkoshy register int is_exterior) 51164190Sjkoshy{ 52164190Sjkoshy register u_int delay, bandwidth; 53164190Sjkoshy u_int metric, mtu; 54164190Sjkoshy 55164190Sjkoshy if (is_interior) 56164190Sjkoshy printf(" *.%d.%d.%d", igr->igr_net[0], 57164190Sjkoshy igr->igr_net[1], igr->igr_net[2]); 58164190Sjkoshy else if (is_exterior) 59 printf(" X%d.%d.%d.0", igr->igr_net[0], 60 igr->igr_net[1], igr->igr_net[2]); 61 else 62 printf(" %d.%d.%d.0", igr->igr_net[0], 63 igr->igr_net[1], igr->igr_net[2]); 64 65 delay = EXTRACT_24BITS(igr->igr_dly); 66 bandwidth = EXTRACT_24BITS(igr->igr_bw); 67 metric = bandwidth + delay; 68 if (metric > 0xffffff) 69 metric = 0xffffff; 70 mtu = EXTRACT_16BITS(igr->igr_mtu); 71 72 printf(" d=%d b=%d r=%d l=%d M=%d mtu=%d in %d hops", 73 10 * delay, bandwidth == 0 ? 0 : 10000000 / bandwidth, 74 igr->igr_rel, igr->igr_ld, metric, 75 mtu, igr->igr_hct); 76} 77 78static struct tok op2str[] = { 79 { IGRP_UPDATE, "update" }, 80 { IGRP_REQUEST, "request" }, 81 { 0, NULL } 82}; 83 84void 85igrp_print(register const u_char *bp, u_int length, register const u_char *bp2) 86{ 87 register struct igrphdr *hdr; 88 register struct ip *ip; 89 register u_char *cp; 90 u_int nint, nsys, next; 91 92 hdr = (struct igrphdr *)bp; 93 ip = (struct ip *)bp2; 94 cp = (u_char *)(hdr + 1); 95 (void)printf("igrp:"); 96 97 /* Header */ 98 TCHECK(*hdr); 99 nint = EXTRACT_16BITS(&hdr->ig_ni); 100 nsys = EXTRACT_16BITS(&hdr->ig_ns); 101 next = EXTRACT_16BITS(&hdr->ig_nx); 102 103 (void)printf(" %s V%d edit=%d AS=%d (%d/%d/%d)", 104 tok2str(op2str, "op-#%d", IGRP_OP(hdr->ig_vop)), 105 IGRP_V(hdr->ig_vop), 106 hdr->ig_ed, 107 EXTRACT_16BITS(&hdr->ig_as), 108 nint, 109 nsys, 110 next); 111 112 length -= sizeof(*hdr); 113 while (length >= IGRP_RTE_SIZE) { 114 if (nint > 0) { 115 TCHECK2(*cp, IGRP_RTE_SIZE); 116 igrp_entry_print((struct igrprte *)cp, 1, 0); 117 --nint; 118 } else if (nsys > 0) { 119 TCHECK2(*cp, IGRP_RTE_SIZE); 120 igrp_entry_print((struct igrprte *)cp, 0, 0); 121 --nsys; 122 } else if (next > 0) { 123 TCHECK2(*cp, IGRP_RTE_SIZE); 124 igrp_entry_print((struct igrprte *)cp, 0, 1); 125 --next; 126 } else { 127 (void)printf(" [extra bytes %d]", length); 128 break; 129 } 130 cp += IGRP_RTE_SIZE; 131 length -= IGRP_RTE_SIZE; 132 } 133 if (nint == 0 && nsys == 0 && next == 0) 134 return; 135trunc: 136 fputs(" [|igrp]", stdout); 137} 138