/* $OpenBSD: mroute.c,v 1.25 2015/02/12 23:31:12 claudio Exp $ */ /* $NetBSD: mroute.c,v 1.10 1996/05/11 13:51:27 mycroft Exp $ */ /* * Copyright (c) 1989 Stephen Deering * Copyright (c) 1992, 1993 * The Regents of the University of California. All rights reserved. * * This code is derived from software contributed to Berkeley by * Stephen Deering of Stanford University. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. 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 BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * * from: @(#)mroute.c 8.1 (Berkeley) 6/6/93 */ /* * Print multicast routing structures and statistics. * * MROUTING 1.0 */ #include <sys/types.h> #include <sys/socket.h> #include <sys/sysctl.h> #include <netinet/in.h> #include <netinet/igmp.h> #include <netinet/ip_mroute.h> #include <err.h> #include <errno.h> #include <limits.h> #include <stdio.h> #include <stdlib.h> #include <util.h> #include "netstat.h" void mroutepr(void) { u_int mrtproto; struct vifinfo *v; struct mfcinfo *m; size_t needed, numvifs, nummfcs, vifi, mfci; char *buf = NULL; char fmtbuf[FMT_SCALED_STRSIZE]; vifi_t maxvif = 0; int mib[] = { CTL_NET, PF_INET, IPPROTO_IP, IPCTL_MRTPROTO }; size_t len = sizeof(int); int banner_printed = 0, saved_nflag; if (sysctl(mib, sizeof(mib) / sizeof(mib[0]), &mrtproto, &len, NULL, 0) == -1) { if (errno != ENOPROTOOPT) warn("mroute"); return; } switch (mrtproto) { case 0: printf("no multicast routing compiled into this system\n"); return; case IGMP_DVMRP: break; default: printf("multicast routing protocol %u, unknown\n", mrtproto); return; } saved_nflag = nflag; nflag = 1; mib[3] = IPCTL_MRTVIF; needed = get_sysctl(mib, sizeof(mib) / sizeof(mib[0]), &buf); numvifs = needed / sizeof(*v); v = (struct vifinfo *)buf; if (numvifs) maxvif = v[numvifs - 1].v_vifi; for (vifi = 0; vifi < numvifs; ++vifi, ++v) { if (!banner_printed) { printf("\nVirtual Interface Table\n %s%s", "Vif Thresh Limit Local-Address ", "Remote-Address Pkt_in Pkt_out\n"); banner_printed = 1; } printf(" %3u %3u %-15.15s", v->v_vifi, v->v_threshold, routename4(v->v_lcl_addr.s_addr)); printf(" %-15.15s %6lu %7lu\n", (v->v_flags & VIFF_TUNNEL) ? routename4(v->v_rmt_addr.s_addr) : "", v->v_pkt_in, v->v_pkt_out); } if (!banner_printed) printf("Virtual Interface Table is empty\n"); banner_printed = 0; mib[3] = IPCTL_MRTMFC; needed = get_sysctl(mib, sizeof(mib) / sizeof(mib[0]), &buf); nummfcs = needed / sizeof(*m); m = (struct mfcinfo *)buf; for (mfci = 0; mfci < nummfcs; ++mfci, ++m) { if (!banner_printed) { printf("\nMulticast Forwarding Cache\n %s%s", "Hash Origin Mcastgroup ", "Traffic In-Vif Out-Vifs/Forw-ttl\n"); banner_printed = 1; } printf(" %3zu %-15.15s", mfci, routename4(m->mfc_origin.s_addr)); fmt_scaled(m->mfc_pkt_cnt, fmtbuf); printf(" %-15.15s %7s %3u ", routename4(m->mfc_mcastgrp.s_addr), buf, m->mfc_parent); for (vifi = 0; vifi <= maxvif; ++vifi) if (m->mfc_ttls[vifi]) printf(" %zu/%u", vifi, m->mfc_ttls[vifi]); printf("\n"); } if (!banner_printed) printf("Multicast Forwarding Cache is empty\n"); else printf("\nTotal no. of entries in cache: %zu\n", nummfcs); printf("\n"); nflag = saved_nflag; free(buf); } void mrt_stats(void) { u_int mrtproto; struct mrtstat mrtstat; int mib[] = { CTL_NET, PF_INET, IPPROTO_IP, IPCTL_MRTPROTO }; int mib2[] = { CTL_NET, PF_INET, IPPROTO_IP, IPCTL_MRTSTATS }; size_t len = sizeof(int); if (sysctl(mib, sizeof(mib) / sizeof(mib[0]), &mrtproto, &len, NULL, 0) == -1) { if (errno != ENOPROTOOPT) warn("mroute"); return; } switch (mrtproto) { case 0: printf("no multicast routing compiled into this system\n"); return; case IGMP_DVMRP: break; default: printf("multicast routing protocol %u, unknown\n", mrtproto); return; } len = sizeof(mrtstat); if (sysctl(mib2, sizeof(mib2) / sizeof(mib2[0]), &mrtstat, &len, NULL, 0) == -1) { if (errno != ENOPROTOOPT) warn("mroute"); return; } printf("multicast routing:\n"); printf("\t%lu datagram%s with no route for origin\n", mrtstat.mrts_no_route, plural(mrtstat.mrts_no_route)); printf("\t%lu upcall%s made to mrouted\n", mrtstat.mrts_upcalls, plural(mrtstat.mrts_upcalls)); printf("\t%lu datagram%s with malformed tunnel options\n", mrtstat.mrts_bad_tunnel, plural(mrtstat.mrts_bad_tunnel)); printf("\t%lu datagram%s with no room for tunnel options\n", mrtstat.mrts_cant_tunnel, plural(mrtstat.mrts_cant_tunnel)); printf("\t%lu datagram%s arrived on wrong interface\n", mrtstat.mrts_wrong_if, plural(mrtstat.mrts_wrong_if)); printf("\t%lu datagram%s dropped due to upcall Q overflow\n", mrtstat.mrts_upq_ovflw, plural(mrtstat.mrts_upq_ovflw)); printf("\t%lu datagram%s dropped due to upcall socket overflow\n", mrtstat.mrts_upq_sockfull, plural(mrtstat.mrts_upq_sockfull)); printf("\t%lu datagram%s cleaned up by the cache\n", mrtstat.mrts_cache_cleanups, plural(mrtstat.mrts_cache_cleanups)); printf("\t%lu datagram%s dropped selectively by ratelimiter\n", mrtstat.mrts_drop_sel, plural(mrtstat.mrts_drop_sel)); printf("\t%lu datagram%s dropped - bucket Q overflow\n", mrtstat.mrts_q_overflow, plural(mrtstat.mrts_q_overflow)); printf("\t%lu datagram%s dropped - larger than bkt size\n", mrtstat.mrts_pkt2large, plural(mrtstat.mrts_pkt2large)); }