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