usr.bin/netstat/mroute.c

   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 }