1 /* 2 * Copyright (c) 1996, 1997 3 * The Regents of the University of California. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that: (1) source code distributions 7 * retain the above copyright notice and this paragraph in its entirety, (2) 8 * distributions including binary code include the above copyright notice and 9 * this paragraph in its entirety in the documentation or other materials 10 * provided with the distribution, and (3) all advertising materials mentioning 11 * features or use of this software display the following acknowledgement: 12 * ``This product includes software developed by the University of California, 13 * Lawrence Berkeley Laboratory and its contributors.'' Neither the name of 14 * the University nor the names of its contributors may be used to endorse 15 * or promote products derived from this software without specific prior 16 * written permission. 17 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED 18 * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF 19 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. 20 * 21 * Initial contribution from Francis Dupont (francis.dupont@inria.fr) 22 */ 23 24 #include <sys/cdefs.h> 25 #ifndef lint 26 #if 0 27 static const char rcsid[] _U_ = 28 "@(#) Header: /tcpdump/master/tcpdump/print-igrp.c,v 1.21 2005-04-20 21:01:56 guy Exp (LBL)"; 29 #else 30 __RCSID("$NetBSD: print-igrp.c,v 1.2 2010/12/05 05:11:30 christos Exp $"); 31 #endif 32 #endif 33 34 #ifdef HAVE_CONFIG_H 35 #include "config.h" 36 #endif 37 38 #include <tcpdump-stdinc.h> 39 40 #include <stdio.h> 41 42 #include "interface.h" 43 #include "addrtoname.h" 44 #include "igrp.h" 45 #include "ip.h" 46 #include "extract.h" /* must come after interface.h */ 47 48 static void 49 igrp_entry_print(register struct igrprte *igr, register int is_interior, 50 register int is_exterior) 51 { 52 register u_int delay, bandwidth; 53 u_int metric, mtu; 54 55 if (is_interior) 56 printf(" *.%d.%d.%d", igr->igr_net[0], 57 igr->igr_net[1], igr->igr_net[2]); 58 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 78 static struct tok op2str[] = { 79 { IGRP_UPDATE, "update" }, 80 { IGRP_REQUEST, "request" }, 81 { 0, NULL } 82 }; 83 84 void 85 igrp_print(register const u_char *bp, u_int length, const u_char *bp2 _U_) 86 { 87 register struct igrphdr *hdr; 88 register u_char *cp; 89 u_int nint, nsys, next; 90 91 hdr = (struct igrphdr *)bp; 92 cp = (u_char *)(hdr + 1); 93 (void)printf("igrp:"); 94 95 /* Header */ 96 TCHECK(*hdr); 97 nint = EXTRACT_16BITS(&hdr->ig_ni); 98 nsys = EXTRACT_16BITS(&hdr->ig_ns); 99 next = EXTRACT_16BITS(&hdr->ig_nx); 100 101 (void)printf(" %s V%d edit=%d AS=%d (%d/%d/%d)", 102 tok2str(op2str, "op-#%d", IGRP_OP(hdr->ig_vop)), 103 IGRP_V(hdr->ig_vop), 104 hdr->ig_ed, 105 EXTRACT_16BITS(&hdr->ig_as), 106 nint, 107 nsys, 108 next); 109 110 length -= sizeof(*hdr); 111 while (length >= IGRP_RTE_SIZE) { 112 if (nint > 0) { 113 TCHECK2(*cp, IGRP_RTE_SIZE); 114 igrp_entry_print((struct igrprte *)cp, 1, 0); 115 --nint; 116 } else if (nsys > 0) { 117 TCHECK2(*cp, IGRP_RTE_SIZE); 118 igrp_entry_print((struct igrprte *)cp, 0, 0); 119 --nsys; 120 } else if (next > 0) { 121 TCHECK2(*cp, IGRP_RTE_SIZE); 122 igrp_entry_print((struct igrprte *)cp, 0, 1); 123 --next; 124 } else { 125 (void)printf(" [extra bytes %d]", length); 126 break; 127 } 128 cp += IGRP_RTE_SIZE; 129 length -= IGRP_RTE_SIZE; 130 } 131 if (nint == 0 && nsys == 0 && next == 0) 132 return; 133 trunc: 134 fputs(" [|igrp]", stdout); 135 } 136