1 /* $OpenBSD: mroute6.c,v 1.21 2016/08/27 04:13:43 guenther 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/select.h> 69 #include <sys/socket.h> 70 #include <sys/sysctl.h> 71 72 #include <net/if.h> 73 #include <netinet/in.h> 74 #include <netinet6/ip6_mroute.h> 75 76 #include <err.h> 77 #include <errno.h> 78 #include <stdio.h> 79 #include <stdlib.h> 80 #include <util.h> 81 #include "netstat.h" 82 83 #define WID_ORG (lflag ? 39 : (nflag ? 29 : 18)) /* width of origin column */ 84 #define WID_GRP (lflag ? 18 : (nflag ? 16 : 18)) /* width of group column */ 85 86 void 87 mroute6pr(void) 88 { 89 char *buf = NULL; 90 char fmtbuf[FMT_SCALED_STRSIZE]; 91 struct mf6cinfo *mfc; 92 struct mif6info *mif; 93 size_t needed, mifi, nummifs, mfci, nummfcs; 94 int banner_printed, saved_nflag; 95 mifi_t maxmif = 0; 96 u_int mrtproto; 97 int mib[] = { CTL_NET, PF_INET6, IPPROTO_IPV6, IPV6CTL_MRTPROTO }; 98 size_t len = sizeof(int); 99 100 if (sysctl(mib, sizeof(mib) / sizeof(mib[0]), 101 &mrtproto, &len, NULL, 0) == -1) { 102 if (errno != ENOPROTOOPT) 103 warn("mroute"); 104 return; 105 } 106 switch (mrtproto) { 107 case 0: 108 printf("no IPv6 multicast routing compiled into this system\n"); 109 return; 110 case IPPROTO_PIM: 111 break; 112 default: 113 printf("IPv6 multicast routing protocol %u, unknown\n", 114 mrtproto); 115 return; 116 } 117 118 saved_nflag = nflag; 119 nflag = 1; 120 121 mib[3] = IPV6CTL_MRTMIF; 122 needed = get_sysctl(mib, sizeof(mib) / sizeof(mib[0]), &buf); 123 nummifs = needed / sizeof(*mif); 124 mif = (struct mif6info *)buf; 125 if (nummifs) 126 maxmif = mif[nummifs - 1].m6_mifi; 127 128 banner_printed = 0; 129 for (mifi = 0; mifi < nummifs; ++mifi, ++mif) { 130 char ifname[IFNAMSIZ]; 131 132 if (mif->m6_ifindex == 0) 133 continue; 134 135 if (!banner_printed) { 136 printf("\nIPv6 Multicast Interface Table\n" 137 " Mif Rate PhyIF " 138 "Pkts-In Pkts-Out\n"); 139 banner_printed = 1; 140 } 141 142 printf(" %2u %4d", 143 mif->m6_mifi, mif->m6_rate_limit); 144 printf(" %5s", (mif->m6_flags & MIFF_REGISTER) ? 145 "reg0" : if_indextoname(mif->m6_ifindex, ifname)); 146 147 printf(" %9llu %9llu\n", mif->m6_pkt_in, mif->m6_pkt_out); 148 } 149 if (!banner_printed) 150 printf("IPv6 Multicast Interface Table is empty\n"); 151 152 mib[3] = IPV6CTL_MRTMFC; 153 needed = get_sysctl(mib, sizeof(mib) / sizeof(mib[0]), &buf); 154 nummfcs = needed / sizeof(*mfc); 155 mfc = (struct mf6cinfo *)buf; 156 157 banner_printed = 0; 158 for (mfci = 0; mfci < nummfcs; ++mfci, ++mfc) { 159 if (!banner_printed) { 160 printf("\nIPv6 Multicast Forwarding Cache\n"); 161 printf(" %-*.*s %-*.*s %s", 162 WID_ORG, WID_ORG, "Origin", 163 WID_GRP, WID_GRP, "Group", 164 " Packets Waits In-Mif Out-Mifs\n"); 165 banner_printed = 1; 166 } 167 168 printf(" %-*.*s", WID_ORG, WID_ORG, 169 routename6(&mfc->mf6c_origin)); 170 printf(" %-*.*s", WID_GRP, WID_GRP, 171 routename6(&mfc->mf6c_mcastgrp)); 172 fmt_scaled(mfc->mf6c_pkt_cnt, fmtbuf); 173 printf(" %9s", fmtbuf); 174 175 printf(" %3llu", mfc->mf6c_stall_cnt); 176 177 if (mfc->mf6c_parent == MF6C_INCOMPLETE_PARENT) 178 printf(" --- "); 179 else 180 printf(" %3d ", mfc->mf6c_parent); 181 for (mifi = 0; mifi <= MAXMIFS; mifi++) { 182 if (IF_ISSET(mifi, &mfc->mf6c_ifset)) 183 printf(" %zu", mifi); 184 } 185 printf("\n"); 186 } 187 if (!banner_printed) 188 printf("IPv6 Multicast Routing Table is empty"); 189 190 printf("\n"); 191 nflag = saved_nflag; 192 193 free(buf); 194 } 195 196 void 197 mrt6_stats(void) 198 { 199 struct mrt6stat mrt6stat; 200 u_int mrt6proto; 201 int mib[] = { CTL_NET, PF_INET6, IPPROTO_IPV6, IPV6CTL_MRTPROTO }; 202 int mib2[] = { CTL_NET, PF_INET6, IPPROTO_IPV6, IPV6CTL_MRTSTATS }; 203 size_t len = sizeof(int); 204 205 if (sysctl(mib, sizeof(mib) / sizeof(mib[0]), 206 &mrt6proto, &len, NULL, 0) == -1) { 207 if (errno != ENOPROTOOPT) 208 warn("mroute"); 209 return; 210 } 211 switch (mrt6proto) { 212 case 0: 213 printf("no IPv6 multicast routing compiled into this system\n"); 214 return; 215 case IPPROTO_PIM: 216 break; 217 default: 218 printf("IPv6 multicast routing protocol %u, unknown\n", 219 mrt6proto); 220 return; 221 } 222 223 len = sizeof(mrt6stat); 224 if (sysctl(mib2, sizeof(mib2) / sizeof(mib2[0]), 225 &mrt6stat, &len, NULL, 0) == -1) { 226 if (errno != ENOPROTOOPT) 227 warn("mroute"); 228 return; 229 } 230 231 printf("multicast forwarding:\n"); 232 printf("\t%llu multicast forwarding cache lookup%s\n", 233 mrt6stat.mrt6s_mfc_lookups, plural(mrt6stat.mrt6s_mfc_lookups)); 234 printf("\t%llu multicast forwarding cache miss%s\n", 235 mrt6stat.mrt6s_mfc_misses, plurales(mrt6stat.mrt6s_mfc_misses)); 236 printf("\t%llu upcall%s to mrouted\n", 237 mrt6stat.mrt6s_upcalls, plural(mrt6stat.mrt6s_upcalls)); 238 printf("\t%llu upcall queue overflow%s\n", 239 mrt6stat.mrt6s_upq_ovflw, plural(mrt6stat.mrt6s_upq_ovflw)); 240 printf("\t%llu upcall%s dropped due to full socket buffer\n", 241 mrt6stat.mrt6s_upq_sockfull, plural(mrt6stat.mrt6s_upq_sockfull)); 242 printf("\t%llu cache cleanup%s\n", 243 mrt6stat.mrt6s_cache_cleanups, plural(mrt6stat.mrt6s_cache_cleanups)); 244 printf("\t%llu datagram%s with no route for origin\n", 245 mrt6stat.mrt6s_no_route, plural(mrt6stat.mrt6s_no_route)); 246 printf("\t%llu datagram%s arrived with bad tunneling\n", 247 mrt6stat.mrt6s_bad_tunnel, plural(mrt6stat.mrt6s_bad_tunnel)); 248 printf("\t%llu datagram%s could not be tunneled\n", 249 mrt6stat.mrt6s_cant_tunnel, plural(mrt6stat.mrt6s_cant_tunnel)); 250 printf("\t%llu datagram%s arrived on wrong interface\n", 251 mrt6stat.mrt6s_wrong_if, plural(mrt6stat.mrt6s_wrong_if)); 252 printf("\t%llu datagram%s selectively dropped\n", 253 mrt6stat.mrt6s_drop_sel, plural(mrt6stat.mrt6s_drop_sel)); 254 printf("\t%llu datagram%s dropped due to queue overflow\n", 255 mrt6stat.mrt6s_q_overflow, plural(mrt6stat.mrt6s_q_overflow)); 256 printf("\t%llu datagram%s dropped for being too large\n", 257 mrt6stat.mrt6s_pkt2large, plural(mrt6stat.mrt6s_pkt2large)); 258 } 259