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 #ifndef lint 41 static const char rcsid[] = 42 "$FreeBSD$"; 43 #endif /* not lint */ 44 45 /* 46 * Print multicast routing structures and statistics. 47 * 48 * MROUTING 1.0 49 */ 50 51 #include <sys/param.h> 52 #include <sys/queue.h> 53 #include <sys/socket.h> 54 #include <sys/socketvar.h> 55 #include <sys/sysctl.h> 56 #include <sys/protosw.h> 57 #include <sys/mbuf.h> 58 #include <sys/time.h> 59 60 #include <net/if.h> 61 #include <netinet/in.h> 62 #include <netinet/igmp.h> 63 #include <net/route.h> 64 #include <netinet/ip_mroute.h> 65 66 #include <err.h> 67 #include <stdio.h> 68 #include <stdlib.h> 69 #include "netstat.h" 70 71 static void print_bw_meter(struct bw_meter *bw_meter, int *banner_printed); 72 73 void 74 mroutepr(u_long mfcaddr, u_long vifaddr) 75 { 76 struct mfc *mfctable[MFCTBLSIZ]; 77 struct vif viftable[MAXVIFS]; 78 struct mfc mfc, *m; 79 struct vif *v; 80 vifi_t vifi; 81 int i; 82 int banner_printed; 83 int saved_numeric_addr; 84 vifi_t maxvif = 0; 85 size_t len; 86 87 len = sizeof(mfctable); 88 if (sysctlbyname("net.inet.ip.mfctable", mfctable, &len, NULL, 0) < 0) { 89 warn("sysctl: net.inet.ip.mfctable"); 90 /* Compatability with older kernels - candidate for removal */ 91 if (mfcaddr == 0) { 92 printf("No IPv4 multicast routing compiled into this system.\n"); 93 return; 94 } 95 96 kread(mfcaddr, (char *)mfctable, sizeof(mfctable)); 97 } 98 99 len = sizeof(viftable); 100 if (sysctlbyname("net.inet.ip.viftable", viftable, &len, NULL, 0) < 0) { 101 warn("sysctl: net.inet.ip.viftable"); 102 /* Compatability with older kernels - candidate for removal */ 103 if (vifaddr == 0) { 104 printf("No IPv4 multicast routing compiled into this system.\n"); 105 return; 106 } 107 108 kread(vifaddr, (char *)viftable, sizeof(viftable)); 109 } 110 111 saved_numeric_addr = numeric_addr; 112 numeric_addr = 1; 113 114 banner_printed = 0; 115 for (vifi = 0, v = viftable; vifi < MAXVIFS; ++vifi, ++v) { 116 if (v->v_lcl_addr.s_addr == 0) 117 continue; 118 119 maxvif = vifi; 120 if (!banner_printed) { 121 printf("\nVirtual Interface Table\n" 122 " Vif Thresh Rate Local-Address " 123 "Remote-Address Pkts-In Pkts-Out\n"); 124 banner_printed = 1; 125 } 126 127 printf(" %2u %6u %4d %-15.15s", 128 /* opposite math of add_vif() */ 129 vifi, v->v_threshold, v->v_rate_limit * 1000 / 1024, 130 routename(v->v_lcl_addr.s_addr)); 131 printf(" %-15.15s", (v->v_flags & VIFF_TUNNEL) ? 132 routename(v->v_rmt_addr.s_addr) : ""); 133 134 printf(" %9lu %9lu\n", v->v_pkt_in, v->v_pkt_out); 135 } 136 if (!banner_printed) 137 printf("\nVirtual Interface Table is empty\n"); 138 139 banner_printed = 0; 140 for (i = 0; i < MFCTBLSIZ; ++i) { 141 m = mfctable[i]; 142 while(m) { 143 kread((u_long)m, (char *)&mfc, sizeof mfc); 144 145 if (!banner_printed) { 146 printf("\nIPv4 Multicast Forwarding Cache\n" 147 " Origin Group " 148 " Packets In-Vif Out-Vifs:Ttls\n"); 149 banner_printed = 1; 150 } 151 152 printf(" %-15.15s", routename(mfc.mfc_origin.s_addr)); 153 printf(" %-15.15s", routename(mfc.mfc_mcastgrp.s_addr)); 154 printf(" %9lu", mfc.mfc_pkt_cnt); 155 printf(" %3d ", mfc.mfc_parent); 156 for (vifi = 0; vifi <= maxvif; vifi++) { 157 if (mfc.mfc_ttls[vifi] > 0) 158 printf(" %u:%u", vifi, 159 mfc.mfc_ttls[vifi]); 160 } 161 printf("\n"); 162 163 /* Print the bw meter information */ 164 { 165 struct bw_meter bw_meter, *bwm; 166 int banner_printed2 = 0; 167 168 bwm = mfc.mfc_bw_meter; 169 while (bwm) { 170 kread((u_long)bwm, (char *)&bw_meter, 171 sizeof bw_meter); 172 print_bw_meter(&bw_meter, 173 &banner_printed2); 174 bwm = bw_meter.bm_mfc_next; 175 } 176 #if 0 /* Don't ever print it? */ 177 if (! banner_printed2) 178 printf("\n No Bandwidth Meters\n"); 179 #endif 180 } 181 182 m = mfc.mfc_next; 183 } 184 } 185 if (!banner_printed) 186 printf("\nMulticast Routing Table is empty\n"); 187 188 printf("\n"); 189 numeric_addr = saved_numeric_addr; 190 } 191 192 static void 193 print_bw_meter(struct bw_meter *bw_meter, int *banner_printed) 194 { 195 char s0[256], s1[256], s2[256], s3[256]; 196 struct timeval now, end, delta; 197 198 gettimeofday(&now, NULL); 199 200 if (! *banner_printed) { 201 printf(" Bandwidth Meters\n"); 202 printf(" %-30s", "Measured(Start|Packets|Bytes)"); 203 printf(" %s", "Type"); 204 printf(" %-30s", "Thresh(Interval|Packets|Bytes)"); 205 printf(" Remain"); 206 printf("\n"); 207 *banner_printed = 1; 208 } 209 210 /* The measured values */ 211 if (bw_meter->bm_flags & BW_METER_UNIT_PACKETS) 212 sprintf(s1, "%llu", bw_meter->bm_measured.b_packets); 213 else 214 sprintf(s1, "?"); 215 if (bw_meter->bm_flags & BW_METER_UNIT_BYTES) 216 sprintf(s2, "%llu", bw_meter->bm_measured.b_bytes); 217 else 218 sprintf(s2, "?"); 219 sprintf(s0, "%lu.%lu|%s|%s", 220 bw_meter->bm_start_time.tv_sec, 221 bw_meter->bm_start_time.tv_usec, 222 s1, s2); 223 printf(" %-30s", s0); 224 225 /* The type of entry */ 226 sprintf(s0, "%s", "?"); 227 if (bw_meter->bm_flags & BW_METER_GEQ) 228 sprintf(s0, "%s", ">="); 229 else if (bw_meter->bm_flags & BW_METER_LEQ) 230 sprintf(s0, "%s", "<="); 231 printf(" %-3s", s0); 232 233 /* The threshold values */ 234 if (bw_meter->bm_flags & BW_METER_UNIT_PACKETS) 235 sprintf(s1, "%llu", bw_meter->bm_threshold.b_packets); 236 else 237 sprintf(s1, "?"); 238 if (bw_meter->bm_flags & BW_METER_UNIT_BYTES) 239 sprintf(s2, "%llu", bw_meter->bm_threshold.b_bytes); 240 else 241 sprintf(s2, "?"); 242 sprintf(s0, "%lu.%lu|%s|%s", 243 bw_meter->bm_threshold.b_time.tv_sec, 244 bw_meter->bm_threshold.b_time.tv_usec, 245 s1, s2); 246 printf(" %-30s", s0); 247 248 /* Remaining time */ 249 timeradd(&bw_meter->bm_start_time, 250 &bw_meter->bm_threshold.b_time, &end); 251 if (timercmp(&now, &end, <=)) { 252 timersub(&end, &now, &delta); 253 sprintf(s3, "%lu.%lu", delta.tv_sec, delta.tv_usec); 254 } else { 255 /* Negative time */ 256 timersub(&now, &end, &delta); 257 sprintf(s3, "-%lu.%lu", delta.tv_sec, delta.tv_usec); 258 } 259 printf(" %s", s3); 260 261 printf("\n"); 262 } 263 264 void 265 mrt_stats(u_long mstaddr) 266 { 267 struct mrtstat mrtstat; 268 size_t len = sizeof mrtstat; 269 270 if (sysctlbyname("net.inet.ip.mrtstat", &mrtstat, &len, 271 NULL, 0) < 0) { 272 warn("sysctl: net.inet.ip.mrtstat"); 273 /* Compatability with older kernels - candidate for removal */ 274 if (mstaddr == 0) { 275 printf("No IPv4 multicast routing compiled into this system.\n"); 276 return; 277 } 278 279 kread(mstaddr, (char *)&mrtstat, sizeof(mrtstat)); 280 } 281 printf("IPv4 multicast forwarding:\n"); 282 283 #define p(f, m) if (mrtstat.f || sflag <= 1) \ 284 printf(m, mrtstat.f, plural(mrtstat.f)) 285 #define p2(f, m) if (mrtstat.f || sflag <= 1) \ 286 printf(m, mrtstat.f, plurales(mrtstat.f)) 287 288 p(mrts_mfc_lookups, "\t%lu multicast forwarding cache lookup%s\n"); 289 p2(mrts_mfc_misses, "\t%lu multicast forwarding cache miss%s\n"); 290 p(mrts_upcalls, "\t%lu upcall%s to mrouted\n"); 291 p(mrts_upq_ovflw, "\t%lu upcall queue overflow%s\n"); 292 p(mrts_upq_sockfull, 293 "\t%lu upcall%s dropped due to full socket buffer\n"); 294 p(mrts_cache_cleanups, "\t%lu cache cleanup%s\n"); 295 p(mrts_no_route, "\t%lu datagram%s with no route for origin\n"); 296 p(mrts_bad_tunnel, "\t%lu datagram%s arrived with bad tunneling\n"); 297 p(mrts_cant_tunnel, "\t%lu datagram%s could not be tunneled\n"); 298 p(mrts_wrong_if, "\t%lu datagram%s arrived on wrong interface\n"); 299 p(mrts_drop_sel, "\t%lu datagram%s selectively dropped\n"); 300 p(mrts_q_overflow, "\t%lu datagram%s dropped due to queue overflow\n"); 301 p(mrts_pkt2large, "\t%lu datagram%s dropped for being too large\n"); 302 303 #undef p2 304 #undef p 305 } 306