1 /* 2 * Copyright (c) 1989 Stephen Deering 3 * Copyright (c) 1992, 1993 4 * The Regents of the University of California. All rights reserved. 5 * 6 * This code is derived from software contributed to Berkeley by 7 * Stephen Deering of Stanford University. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 3. All advertising materials mentioning features or use of this software 18 * must display the following acknowledgement: 19 * This product includes software developed by the University of 20 * California, Berkeley and its contributors. 21 * 4. Neither the name of the University nor the names of its contributors 22 * may be used to endorse or promote products derived from this software 23 * without specific prior written permission. 24 * 25 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 26 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 27 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 28 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 29 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 30 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 31 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 32 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 33 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 34 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 35 * SUCH DAMAGE. 36 * 37 * @(#)mroute.c 8.2 (Berkeley) 4/28/95 38 */ 39 40 #include <sys/cdefs.h> 41 __FBSDID("$FreeBSD$"); 42 43 /* 44 * Print multicast routing structures and statistics. 45 * 46 * MROUTING 1.0 47 */ 48 49 #include <sys/param.h> 50 #include <sys/queue.h> 51 #include <sys/socket.h> 52 #include <sys/socketvar.h> 53 #include <sys/sysctl.h> 54 #include <sys/protosw.h> 55 #include <sys/mbuf.h> 56 #include <sys/time.h> 57 58 #include <net/if.h> 59 #include <netinet/in.h> 60 #include <netinet/igmp.h> 61 #include <net/route.h> 62 #include <netinet/ip_mroute.h> 63 64 #include <err.h> 65 #include <stdio.h> 66 #include <stdlib.h> 67 #include "netstat.h" 68 69 static void print_bw_meter(struct bw_meter *bw_meter, int *banner_printed); 70 71 void 72 mroutepr(u_long mfcaddr, u_long vifaddr) 73 { 74 struct mfc *mfctable[MFCTBLSIZ]; 75 struct vif viftable[MAXVIFS]; 76 struct mfc mfc, *m; 77 struct vif *v; 78 vifi_t vifi; 79 int i; 80 int banner_printed; 81 int saved_numeric_addr; 82 vifi_t maxvif = 0; 83 size_t len; 84 85 len = sizeof(mfctable); 86 if (sysctlbyname("net.inet.ip.mfctable", mfctable, &len, NULL, 0) < 0) { 87 warn("sysctl: net.inet.ip.mfctable"); 88 /* Compatability with older kernels - candidate for removal */ 89 if (mfcaddr == 0) { 90 printf("No IPv4 multicast routing compiled into this system.\n"); 91 return; 92 } 93 94 kread(mfcaddr, (char *)mfctable, sizeof(mfctable)); 95 } 96 97 len = sizeof(viftable); 98 if (sysctlbyname("net.inet.ip.viftable", viftable, &len, NULL, 0) < 0) { 99 warn("sysctl: net.inet.ip.viftable"); 100 /* Compatability with older kernels - candidate for removal */ 101 if (vifaddr == 0) { 102 printf("No IPv4 multicast routing compiled into this system.\n"); 103 return; 104 } 105 106 kread(vifaddr, (char *)viftable, sizeof(viftable)); 107 } 108 109 saved_numeric_addr = numeric_addr; 110 numeric_addr = 1; 111 112 banner_printed = 0; 113 for (vifi = 0, v = viftable; vifi < MAXVIFS; ++vifi, ++v) { 114 if (v->v_lcl_addr.s_addr == 0) 115 continue; 116 117 maxvif = vifi; 118 if (!banner_printed) { 119 printf("\nVirtual Interface Table\n" 120 " Vif Thresh Rate Local-Address " 121 "Remote-Address Pkts-In Pkts-Out\n"); 122 banner_printed = 1; 123 } 124 125 printf(" %2u %6u %4d %-15.15s", 126 /* opposite math of add_vif() */ 127 vifi, v->v_threshold, v->v_rate_limit * 1000 / 1024, 128 routename(v->v_lcl_addr.s_addr)); 129 printf(" %-15.15s", (v->v_flags & VIFF_TUNNEL) ? 130 routename(v->v_rmt_addr.s_addr) : ""); 131 132 printf(" %9lu %9lu\n", v->v_pkt_in, v->v_pkt_out); 133 } 134 if (!banner_printed) 135 printf("\nVirtual Interface Table is empty\n"); 136 137 banner_printed = 0; 138 for (i = 0; i < MFCTBLSIZ; ++i) { 139 m = mfctable[i]; 140 while(m) { 141 kread((u_long)m, (char *)&mfc, sizeof mfc); 142 143 if (!banner_printed) { 144 printf("\nIPv4 Multicast Forwarding Cache\n" 145 " Origin Group " 146 " Packets In-Vif Out-Vifs:Ttls\n"); 147 banner_printed = 1; 148 } 149 150 printf(" %-15.15s", routename(mfc.mfc_origin.s_addr)); 151 printf(" %-15.15s", routename(mfc.mfc_mcastgrp.s_addr)); 152 printf(" %9lu", mfc.mfc_pkt_cnt); 153 printf(" %3d ", mfc.mfc_parent); 154 for (vifi = 0; vifi <= maxvif; vifi++) { 155 if (mfc.mfc_ttls[vifi] > 0) 156 printf(" %u:%u", vifi, 157 mfc.mfc_ttls[vifi]); 158 } 159 printf("\n"); 160 161 /* Print the bw meter information */ 162 { 163 struct bw_meter bw_meter, *bwm; 164 int banner_printed2 = 0; 165 166 bwm = mfc.mfc_bw_meter; 167 while (bwm) { 168 kread((u_long)bwm, (char *)&bw_meter, 169 sizeof bw_meter); 170 print_bw_meter(&bw_meter, 171 &banner_printed2); 172 bwm = bw_meter.bm_mfc_next; 173 } 174 #if 0 /* Don't ever print it? */ 175 if (! banner_printed2) 176 printf("\n No Bandwidth Meters\n"); 177 #endif 178 } 179 180 m = mfc.mfc_next; 181 } 182 } 183 if (!banner_printed) 184 printf("\nMulticast Routing Table is empty\n"); 185 186 printf("\n"); 187 numeric_addr = saved_numeric_addr; 188 } 189 190 static void 191 print_bw_meter(struct bw_meter *bw_meter, int *banner_printed) 192 { 193 char s0[256], s1[256], s2[256], s3[256]; 194 struct timeval now, end, delta; 195 196 gettimeofday(&now, NULL); 197 198 if (! *banner_printed) { 199 printf(" Bandwidth Meters\n"); 200 printf(" %-30s", "Measured(Start|Packets|Bytes)"); 201 printf(" %s", "Type"); 202 printf(" %-30s", "Thresh(Interval|Packets|Bytes)"); 203 printf(" Remain"); 204 printf("\n"); 205 *banner_printed = 1; 206 } 207 208 /* The measured values */ 209 if (bw_meter->bm_flags & BW_METER_UNIT_PACKETS) 210 sprintf(s1, "%llu", bw_meter->bm_measured.b_packets); 211 else 212 sprintf(s1, "?"); 213 if (bw_meter->bm_flags & BW_METER_UNIT_BYTES) 214 sprintf(s2, "%llu", bw_meter->bm_measured.b_bytes); 215 else 216 sprintf(s2, "?"); 217 sprintf(s0, "%lu.%lu|%s|%s", 218 bw_meter->bm_start_time.tv_sec, 219 bw_meter->bm_start_time.tv_usec, 220 s1, s2); 221 printf(" %-30s", s0); 222 223 /* The type of entry */ 224 sprintf(s0, "%s", "?"); 225 if (bw_meter->bm_flags & BW_METER_GEQ) 226 sprintf(s0, "%s", ">="); 227 else if (bw_meter->bm_flags & BW_METER_LEQ) 228 sprintf(s0, "%s", "<="); 229 printf(" %-3s", s0); 230 231 /* The threshold values */ 232 if (bw_meter->bm_flags & BW_METER_UNIT_PACKETS) 233 sprintf(s1, "%llu", bw_meter->bm_threshold.b_packets); 234 else 235 sprintf(s1, "?"); 236 if (bw_meter->bm_flags & BW_METER_UNIT_BYTES) 237 sprintf(s2, "%llu", bw_meter->bm_threshold.b_bytes); 238 else 239 sprintf(s2, "?"); 240 sprintf(s0, "%lu.%lu|%s|%s", 241 bw_meter->bm_threshold.b_time.tv_sec, 242 bw_meter->bm_threshold.b_time.tv_usec, 243 s1, s2); 244 printf(" %-30s", s0); 245 246 /* Remaining time */ 247 timeradd(&bw_meter->bm_start_time, 248 &bw_meter->bm_threshold.b_time, &end); 249 if (timercmp(&now, &end, <=)) { 250 timersub(&end, &now, &delta); 251 sprintf(s3, "%lu.%lu", delta.tv_sec, delta.tv_usec); 252 } else { 253 /* Negative time */ 254 timersub(&now, &end, &delta); 255 sprintf(s3, "-%lu.%lu", delta.tv_sec, delta.tv_usec); 256 } 257 printf(" %s", s3); 258 259 printf("\n"); 260 } 261 262 void 263 mrt_stats(u_long mstaddr) 264 { 265 struct mrtstat mrtstat; 266 size_t len = sizeof mrtstat; 267 268 if (sysctlbyname("net.inet.ip.mrtstat", &mrtstat, &len, 269 NULL, 0) < 0) { 270 warn("sysctl: net.inet.ip.mrtstat"); 271 /* Compatability with older kernels - candidate for removal */ 272 if (mstaddr == 0) { 273 printf("No IPv4 multicast routing compiled into this system.\n"); 274 return; 275 } 276 277 kread(mstaddr, (char *)&mrtstat, sizeof(mrtstat)); 278 } 279 printf("IPv4 multicast forwarding:\n"); 280 281 #define p(f, m) if (mrtstat.f || sflag <= 1) \ 282 printf(m, mrtstat.f, plural(mrtstat.f)) 283 #define p2(f, m) if (mrtstat.f || sflag <= 1) \ 284 printf(m, mrtstat.f, plurales(mrtstat.f)) 285 286 p(mrts_mfc_lookups, "\t%lu multicast forwarding cache lookup%s\n"); 287 p2(mrts_mfc_misses, "\t%lu multicast forwarding cache miss%s\n"); 288 p(mrts_upcalls, "\t%lu upcall%s to mrouted\n"); 289 p(mrts_upq_ovflw, "\t%lu upcall queue overflow%s\n"); 290 p(mrts_upq_sockfull, 291 "\t%lu upcall%s dropped due to full socket buffer\n"); 292 p(mrts_cache_cleanups, "\t%lu cache cleanup%s\n"); 293 p(mrts_no_route, "\t%lu datagram%s with no route for origin\n"); 294 p(mrts_bad_tunnel, "\t%lu datagram%s arrived with bad tunneling\n"); 295 p(mrts_cant_tunnel, "\t%lu datagram%s could not be tunneled\n"); 296 p(mrts_wrong_if, "\t%lu datagram%s arrived on wrong interface\n"); 297 p(mrts_drop_sel, "\t%lu datagram%s selectively dropped\n"); 298 p(mrts_q_overflow, "\t%lu datagram%s dropped due to queue overflow\n"); 299 p(mrts_pkt2large, "\t%lu datagram%s dropped for being too large\n"); 300 301 #undef p2 302 #undef p 303 } 304