1/* $OpenBSD: mroute6.c,v 1.25 2021/12/05 22:36:19 deraadt Exp $ */ 2 3/* 4 * Copyright (C) 1998 WIDE Project. 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. Neither the name of the project nor the names of its contributors 16 * may be used to endorse or promote products derived from this software 17 * without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE 23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 */ 31 32/* 33 * Copyright (c) 1989 Stephen Deering 34 * Copyright (c) 1992, 1993 35 * The Regents of the University of California. All rights reserved. 36 * 37 * This code is derived from software contributed to Berkeley by 38 * Stephen Deering of Stanford University. 39 * 40 * Redistribution and use in source and binary forms, with or without 41 * modification, are permitted provided that the following conditions 42 * are met: 43 * 1. Redistributions of source code must retain the above copyright 44 * notice, this list of conditions and the following disclaimer. 45 * 2. Redistributions in binary form must reproduce the above copyright 46 * notice, this list of conditions and the following disclaimer in the 47 * documentation and/or other materials provided with the distribution. 48 * 3. Neither the name of the University nor the names of its contributors 49 * may be used to endorse or promote products derived from this software 50 * without specific prior written permission. 51 * 52 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 53 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 54 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 55 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 56 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 57 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 58 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 59 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 60 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 61 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 62 * SUCH DAMAGE. 63 * 64 * @(#)mroute.c 8.2 (Berkeley) 4/28/95 65 */ 66 67#include <sys/types.h> 68#include <sys/socket.h> 69#include <sys/sysctl.h> 70 71#include <net/if.h> 72#include <netinet/in.h> 73#include <netinet6/ip6_mroute.h> 74 75#include <err.h> 76#include <errno.h> 77#include <stdio.h> 78#include <stdlib.h> 79#include <util.h> 80#include "netstat.h" 81 82#define WID_ORG (lflag ? 39 : (nflag ? 29 : 18)) /* width of origin column */ 83#define WID_GRP (lflag ? 18 : (nflag ? 16 : 18)) /* width of group column */ 84 85void 86mroute6pr(void) 87{ 88 char *buf = NULL; 89 char fmtbuf[FMT_SCALED_STRSIZE]; 90 struct mf6cinfo *mfc; 91 struct mif6info *mif; 92 size_t needed, mifi, nummifs, mfci, nummfcs; 93 int banner_printed, saved_nflag; 94 u_int mrtproto; 95 int mib[] = { CTL_NET, PF_INET6, IPPROTO_IPV6, IPV6CTL_MRTPROTO }; 96 size_t len = sizeof(int); 97 98 if (sysctl(mib, sizeof(mib) / sizeof(mib[0]), 99 &mrtproto, &len, NULL, 0) == -1) { 100 if (errno != ENOPROTOOPT) 101 warn("mroute"); 102 return; 103 } 104 switch (mrtproto) { 105 case 0: 106 break; 107 default: 108 printf("IPv6 multicast routing protocol %u, unknown\n", 109 mrtproto); 110 return; 111 } 112 113 saved_nflag = nflag; 114 nflag = 1; 115 116 mib[3] = IPV6CTL_MRTMIF; 117 needed = get_sysctl(mib, sizeof(mib) / sizeof(mib[0]), &buf); 118 nummifs = needed / sizeof(*mif); 119 mif = (struct mif6info *)buf; 120 121 banner_printed = 0; 122 for (mifi = 0; mifi < nummifs; ++mifi, ++mif) { 123 char ifname[IFNAMSIZ]; 124 125 if (mif->m6_ifindex == 0) 126 continue; 127 128 if (!banner_printed) { 129 printf("\nIPv6 Multicast Interface Table\n" 130 " Mif Rate PhyIF " 131 "Pkts-In Pkts-Out\n"); 132 banner_printed = 1; 133 } 134 135 printf(" %2u %4d", 136 mif->m6_mifi, mif->m6_rate_limit); 137 printf(" %5s", (mif->m6_flags & MIFF_REGISTER) ? 138 "reg0" : if_indextoname(mif->m6_ifindex, ifname)); 139 140 printf(" %9llu %9llu\n", mif->m6_pkt_in, mif->m6_pkt_out); 141 } 142 if (!banner_printed) 143 printf("IPv6 Multicast Interface Table is empty\n"); 144 145 mib[3] = IPV6CTL_MRTMFC; 146 needed = get_sysctl(mib, sizeof(mib) / sizeof(mib[0]), &buf); 147 nummfcs = needed / sizeof(*mfc); 148 mfc = (struct mf6cinfo *)buf; 149 150 banner_printed = 0; 151 for (mfci = 0; mfci < nummfcs; ++mfci, ++mfc) { 152 if (!banner_printed) { 153 printf("\nIPv6 Multicast Forwarding Cache\n"); 154 printf(" %-*.*s %-*.*s %s", 155 WID_ORG, WID_ORG, "Origin", 156 WID_GRP, WID_GRP, "Group", 157 " Packets Waits In-Mif Out-Mifs\n"); 158 banner_printed = 1; 159 } 160 161 printf(" %-*.*s", WID_ORG, WID_ORG, 162 routename6(&mfc->mf6c_origin)); 163 printf(" %-*.*s", WID_GRP, WID_GRP, 164 routename6(&mfc->mf6c_mcastgrp)); 165 fmt_scaled(mfc->mf6c_pkt_cnt, fmtbuf); 166 printf(" %9s", fmtbuf); 167 168 printf(" %3llu", mfc->mf6c_stall_cnt); 169 170 if (mfc->mf6c_parent == MF6C_INCOMPLETE_PARENT) 171 printf(" --- "); 172 else 173 printf(" %3d ", mfc->mf6c_parent); 174 for (mifi = 0; mifi <= MAXMIFS; mifi++) { 175 if (IF_ISSET(mifi, &mfc->mf6c_ifset)) 176 printf(" %zu", mifi); 177 } 178 printf("\n"); 179 } 180 if (!banner_printed) 181 printf("IPv6 Multicast Routing Table is empty"); 182 183 printf("\n"); 184 nflag = saved_nflag; 185 186 free(buf); 187} 188 189void 190mrt6_stats(void) 191{ 192 struct mrt6stat mrt6stat; 193 u_int mrt6proto; 194 int mib[] = { CTL_NET, PF_INET6, IPPROTO_IPV6, IPV6CTL_MRTPROTO }; 195 int mib2[] = { CTL_NET, PF_INET6, IPPROTO_IPV6, IPV6CTL_MRTSTATS }; 196 size_t len = sizeof(int); 197 198 if (sysctl(mib, sizeof(mib) / sizeof(mib[0]), 199 &mrt6proto, &len, NULL, 0) == -1) { 200 if (errno != ENOPROTOOPT) 201 warn("mroute"); 202 return; 203 } 204 switch (mrt6proto) { 205 case 0: 206 printf("no IPv6 multicast routing compiled into this system\n"); 207 return; 208 default: 209 printf("IPv6 multicast routing protocol %u, unknown\n", 210 mrt6proto); 211 return; 212 } 213 214 len = sizeof(mrt6stat); 215 if (sysctl(mib2, sizeof(mib2) / sizeof(mib2[0]), 216 &mrt6stat, &len, NULL, 0) == -1) { 217 if (errno != ENOPROTOOPT) 218 warn("mroute"); 219 return; 220 } 221 222 printf("multicast forwarding:\n"); 223 printf("\t%llu multicast forwarding cache lookup%s\n", 224 mrt6stat.mrt6s_mfc_lookups, plural(mrt6stat.mrt6s_mfc_lookups)); 225 printf("\t%llu multicast forwarding cache miss%s\n", 226 mrt6stat.mrt6s_mfc_misses, plurales(mrt6stat.mrt6s_mfc_misses)); 227 printf("\t%llu upcall%s to mrouted\n", 228 mrt6stat.mrt6s_upcalls, plural(mrt6stat.mrt6s_upcalls)); 229 printf("\t%llu upcall queue overflow%s\n", 230 mrt6stat.mrt6s_upq_ovflw, plural(mrt6stat.mrt6s_upq_ovflw)); 231 printf("\t%llu upcall%s dropped due to full socket buffer\n", 232 mrt6stat.mrt6s_upq_sockfull, plural(mrt6stat.mrt6s_upq_sockfull)); 233 printf("\t%llu cache cleanup%s\n", 234 mrt6stat.mrt6s_cache_cleanups, plural(mrt6stat.mrt6s_cache_cleanups)); 235 printf("\t%llu datagram%s with no route for origin\n", 236 mrt6stat.mrt6s_no_route, plural(mrt6stat.mrt6s_no_route)); 237 printf("\t%llu datagram%s arrived with bad tunneling\n", 238 mrt6stat.mrt6s_bad_tunnel, plural(mrt6stat.mrt6s_bad_tunnel)); 239 printf("\t%llu datagram%s could not be tunneled\n", 240 mrt6stat.mrt6s_cant_tunnel, plural(mrt6stat.mrt6s_cant_tunnel)); 241 printf("\t%llu datagram%s arrived on wrong interface\n", 242 mrt6stat.mrt6s_wrong_if, plural(mrt6stat.mrt6s_wrong_if)); 243 printf("\t%llu datagram%s selectively dropped\n", 244 mrt6stat.mrt6s_drop_sel, plural(mrt6stat.mrt6s_drop_sel)); 245 printf("\t%llu datagram%s dropped due to queue overflow\n", 246 mrt6stat.mrt6s_q_overflow, plural(mrt6stat.mrt6s_q_overflow)); 247 printf("\t%llu datagram%s dropped for being too large\n", 248 mrt6stat.mrt6s_pkt2large, plural(mrt6stat.mrt6s_pkt2large)); 249} 250