/* $NetBSD: print-igrp.c,v 1.3 2004/09/27 23:04:24 dyoung Exp $ */ /* * Copyright (c) 1996, 1997 * The Regents of the University of California. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that: (1) source code distributions * retain the above copyright notice and this paragraph in its entirety, (2) * distributions including binary code include the above copyright notice and * this paragraph in its entirety in the documentation or other materials * provided with the distribution, and (3) all advertising materials mentioning * features or use of this software display the following acknowledgement: * ``This product includes software developed by the University of California, * Lawrence Berkeley Laboratory and its contributors.'' Neither the name of * the University nor the names of its contributors may be used to endorse * or promote products derived from this software without specific prior * written permission. * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. * * Initial contribution from Francis Dupont (francis.dupont@inria.fr) */ #include #ifndef lint #if 0 static const char rcsid[] _U_ = "@(#) Header: /tcpdump/master/tcpdump/print-igrp.c,v 1.18.2.2 2003/11/16 08:51:26 guy Exp (LBL)"; #else __RCSID("$NetBSD: print-igrp.c,v 1.3 2004/09/27 23:04:24 dyoung Exp $"); #endif #endif #ifdef HAVE_CONFIG_H #include "config.h" #endif #include #include #include "interface.h" #include "addrtoname.h" #include "igrp.h" #include "ip.h" #include "extract.h" /* must come after interface.h */ static void igrp_entry_print(register struct igrprte *igr, register int is_interior, register int is_exterior) { register u_int delay, bandwidth; u_int metric, mtu; if (is_interior) printf(" *.%d.%d.%d", igr->igr_net[0], igr->igr_net[1], igr->igr_net[2]); else if (is_exterior) printf(" X%d.%d.%d.0", igr->igr_net[0], igr->igr_net[1], igr->igr_net[2]); else printf(" %d.%d.%d.0", igr->igr_net[0], igr->igr_net[1], igr->igr_net[2]); delay = EXTRACT_24BITS(igr->igr_dly); bandwidth = EXTRACT_24BITS(igr->igr_bw); metric = bandwidth + delay; if (metric > 0xffffff) metric = 0xffffff; mtu = EXTRACT_16BITS(igr->igr_mtu); printf(" d=%d b=%d r=%d l=%d M=%d mtu=%d in %d hops", 10 * delay, bandwidth == 0 ? 0 : 10000000 / bandwidth, igr->igr_rel, igr->igr_ld, metric, mtu, igr->igr_hct); } static struct tok op2str[] = { { IGRP_UPDATE, "update" }, { IGRP_REQUEST, "request" }, { 0, NULL } }; void igrp_print(register const u_char *bp, u_int length, register const u_char *bp2) { register struct igrphdr *hdr; register struct ip *ip; register u_char *cp; u_int nint, nsys, next; hdr = (struct igrphdr *)bp; ip = (struct ip *)bp2; cp = (u_char *)(hdr + 1); (void)printf("igrp:"); /* Header */ TCHECK(*hdr); nint = EXTRACT_16BITS(&hdr->ig_ni); nsys = EXTRACT_16BITS(&hdr->ig_ns); next = EXTRACT_16BITS(&hdr->ig_nx); (void)printf(" %s V%d edit=%d AS=%d (%d/%d/%d)", tok2str(op2str, "op-#%d", IGRP_OP(hdr->ig_vop)), IGRP_V(hdr->ig_vop), hdr->ig_ed, EXTRACT_16BITS(&hdr->ig_as), nint, nsys, next); length -= sizeof(*hdr); while (length >= IGRP_RTE_SIZE) { if (nint > 0) { TCHECK2(*cp, IGRP_RTE_SIZE); igrp_entry_print((struct igrprte *)cp, 1, 0); --nint; } else if (nsys > 0) { TCHECK2(*cp, IGRP_RTE_SIZE); igrp_entry_print((struct igrprte *)cp, 0, 0); --nsys; } else if (next > 0) { TCHECK2(*cp, IGRP_RTE_SIZE); igrp_entry_print((struct igrprte *)cp, 0, 1); --next; } else { (void)printf(" [extra bytes %d]", length); break; } cp += IGRP_RTE_SIZE; length -= IGRP_RTE_SIZE; } if (nint == 0 && nsys == 0 && next == 0) return; trunc: fputs(" [|igrp]", stdout); }