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. Neither the name of the University nor the names of its contributors
  18  *    may be used to endorse or promote products derived from this software
  19  *    without specific prior written permission.
  20  *
  21  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  22  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  23  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  24  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  25  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  26  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  27  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  28  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  29  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  30  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  31  * SUCH DAMAGE.
  32  *
  33  *      @(#)mroute.c    8.2 (Berkeley) 4/28/95
  34  *
  35  * $FreeBSD: src/usr.bin/netstat/mroute.c,v 1.11.2.4 2001/09/17 14:53:17 ru Exp $
  36  */
  37
  38 /*
  39  * Print multicast routing structures and statistics.
  40  *
  41  * MROUTING 1.0
  42  */
  43
  44 #include <sys/param.h>
  45 #include <sys/queue.h>
  46 #include <sys/socket.h>
  47 #include <sys/socketvar.h>
  48 #include <sys/protosw.h>
  49 #include <sys/mbuf.h>
  50 #include <sys/time.h>
  51
  52 #include <net/if.h>
  53 #include <netinet/in.h>
  54 #include <netinet/igmp.h>
  55 #include <net/route.h>
  56 #include <net/ip_mroute/ip_mroute.h>
  57
  58 #include <stdio.h>
  59 #include <stdlib.h>
  60 #include "netstat.h"
  61
  62 static void print_bw_meter(struct bw_meter *bw_meter, int *banner_printed);
  63
  64 void
  65 mroutepr(u_long mfcaddr, u_long vifaddr)
  66 {
  67         struct mfc *mfctable[MFCTBLSIZ];
  68         struct vif viftable[MAXVIFS];
  69         struct mfc mfc, *m;
  70         struct vif *v;
  71         vifi_t vifi;
  72         int i;
  73         int banner_printed;
  74         int saved_numeric_addr;
  75         vifi_t maxvif = 0;
  76
  77         if (mfcaddr == 0 || vifaddr == 0) {
  78                 printf("No IPv4 multicast routing compiled into this system.\n");
  79                 return;
  80         }
  81
  82         saved_numeric_addr = numeric_addr;
  83         numeric_addr = 1;
  84
  85         kread(vifaddr, (char *)&viftable, sizeof(viftable));
  86         banner_printed = 0;
  87         for (vifi = 0, v = viftable; vifi < MAXVIFS; ++vifi, ++v) {
  88                 if (v->v_lcl_addr.s_addr == 0)
  89                         continue;
  90
  91                 maxvif = vifi;
  92                 if (!banner_printed) {
  93                         printf("\nVirtual Interface Table\n"
  94                                " Vif   Thresh   Rate   Local-Address   "
  95                                "Remote-Address    Pkts-In   Pkts-Out\n");
  96                         banner_printed = 1;
  97                 }
  98
  99                 printf(" %2u    %6u   %4d   %-15.15s",
 100                                         /* opposite math of add_vif() */
 101                     vifi, v->v_threshold, v->v_rate_limit * 1000 / 1024,
 102                     routename(v->v_lcl_addr.s_addr));
 103                 printf(" %-15.15s", (v->v_flags & VIFF_TUNNEL) ?
 104                     routename(v->v_rmt_addr.s_addr) : "");
 105
 106                 printf(" %9lu  %9lu\n", v->v_pkt_in, v->v_pkt_out);
 107         }
 108         if (!banner_printed)
 109                 printf("\nVirtual Interface Table is empty\n");
 110
 111         kread(mfcaddr, (char *)&mfctable, sizeof(mfctable));
 112         banner_printed = 0;
 113         for (i = 0; i < MFCTBLSIZ; ++i) {
 114                 m = mfctable[i];
 115                 while(m) {
 116                         kread((u_long)m, (char *)&mfc, sizeof mfc);
 117
 118                         if (!banner_printed) {
 119                                 printf("\nIPv4 Multicast Forwarding Cache\n"
 120                                        " Origin          Group            "
 121                                        " Packets In-Vif  Out-Vifs:Ttls\n");
 122                                 banner_printed = 1;
 123                         }
 124
 125                         printf(" %-15.15s", routename(mfc.mfc_origin.s_addr));
 126                         printf(" %-15.15s", routename(mfc.mfc_mcastgrp.s_addr));
 127                         printf(" %9lu", mfc.mfc_pkt_cnt);
 128                         printf("  %3d   ", mfc.mfc_parent);
 129                         for (vifi = 0; vifi <= maxvif; vifi++) {
 130                                 if (mfc.mfc_ttls[vifi] > 0)
 131                                         printf(" %u:%u", vifi,
 132                                                mfc.mfc_ttls[vifi]);
 133                         }
 134                         printf("\n");
 135
 136                         /* Print the bw meter information */
 137                         {
 138                                 struct bw_meter bw_meter, *bwm;
 139                                 int banner_printed2 = 0;
 140
 141                                 bwm = mfc.mfc_bw_meter;
 142                                 while (bwm) {
 143                                     kread((u_long)bwm, (char *)&bw_meter,
 144                                                 sizeof bw_meter);
 145                                     print_bw_meter(&bw_meter,
 146                                                 &banner_printed2);
 147                                     bwm = bw_meter.bm_mfc_next;
 148                                 }
 149 #if 0   /* Don't ever print it? */
 150                                 if (! banner_printed2)
 151                                     printf("\n  No Bandwidth Meters\n");
 152 #endif
 153                         }
 154
 155                         m = mfc.mfc_next;
 156                 }
 157         }
 158         if (!banner_printed)
 159                 printf("\nMulticast Routing Table is empty\n");
 160
 161         printf("\n");
 162         numeric_addr = saved_numeric_addr;
 163 }
 164
 165 static void
 166 print_bw_meter(struct bw_meter *bw_meter, int *banner_printed)
 167 {
 168         char s0[256], s1[256], s2[256], s3[256];
 169         struct timeval now, end, delta;
 170
 171         gettimeofday(&now, NULL);
 172
 173         if (! *banner_printed) {
 174                 printf(" Bandwidth Meters\n");
 175                 printf("  %-30s", "Measured(Start|Packets|Bytes)");
 176                 printf(" %s", "Type");
 177                 printf("  %-30s", "Thresh(Interval|Packets|Bytes)");
 178                 printf(" Remain");
 179                 printf("\n");
 180                 *banner_printed = 1;
 181         }
 182
 183         /* The measured values */
 184         if (bw_meter->bm_flags & BW_METER_UNIT_PACKETS)
 185                 sprintf(s1, "%ju", (uintmax_t)bw_meter->bm_measured.b_packets);
 186         else
 187                 sprintf(s1, "?");
 188         if (bw_meter->bm_flags & BW_METER_UNIT_BYTES)
 189                 sprintf(s2, "%ju", (uintmax_t)bw_meter->bm_measured.b_bytes);
 190         else
 191                 sprintf(s2, "?");
 192         sprintf(s0, "%lu.%lu|%.64s|%.64s",
 193                 bw_meter->bm_start_time.tv_sec,
 194                 bw_meter->bm_start_time.tv_usec,
 195                 s1, s2);
 196         printf("  %-30s", s0);
 197
 198         /* The type of entry */
 199         sprintf(s0, "%s", "?");
 200         if (bw_meter->bm_flags & BW_METER_GEQ)
 201                 sprintf(s0, "%s", ">=");
 202         else if (bw_meter->bm_flags & BW_METER_LEQ)
 203                 sprintf(s0, "%s", "<=");
 204         printf("  %-3s", s0);
 205
 206         /* The threshold values */
 207         if (bw_meter->bm_flags & BW_METER_UNIT_PACKETS)
 208                 sprintf(s1, "%ju", (uintmax_t)bw_meter->bm_threshold.b_packets);
 209         else
 210                 sprintf(s1, "?");
 211         if (bw_meter->bm_flags & BW_METER_UNIT_BYTES)
 212                 sprintf(s2, "%ju", (uintmax_t)bw_meter->bm_threshold.b_bytes);
 213         else
 214                 sprintf(s2, "?");
 215         sprintf(s0, "%lu.%lu|%.64s|%.64s",
 216                 bw_meter->bm_threshold.b_time.tv_sec,
 217                 bw_meter->bm_threshold.b_time.tv_usec,
 218                 s1, s2);
 219         printf("  %-30s", s0);
 220
 221         /* Remaining time */
 222         timeradd(&bw_meter->bm_start_time,
 223                  &bw_meter->bm_threshold.b_time, &end);
 224         if (timercmp(&now, &end, <=)) {
 225                 timersub(&end, &now, &delta);
 226                 sprintf(s3, "%lu.%lu", delta.tv_sec, delta.tv_usec);
 227         } else {
 228                 /* Negative time */
 229                 timersub(&now, &end, &delta);
 230                 sprintf(s3, "-%lu.%lu", delta.tv_sec, delta.tv_usec);
 231         }
 232         printf(" %s", s3);
 233
 234         printf("\n");
 235 }
 236
 237 void
 238 mrt_stats(u_long mstaddr)
 239 {
 240         struct mrtstat mrtstat;
 241
 242         if (mstaddr == 0) {
 243                 printf("No IPv4 multicast routing compiled into this system.\n");
 244                 return;
 245         }
 246
 247         kread(mstaddr, (char *)&mrtstat, sizeof(mrtstat));
 248         printf("IPv4 multicast forwarding:\n");
 249
 250 #define p(f, m) if (mrtstat.f || sflag <= 1) \
 251         printf(m, mrtstat.f, plural(mrtstat.f))
 252 #define p2(f, m) if (mrtstat.f || sflag <= 1) \
 253         printf(m, mrtstat.f, plurales(mrtstat.f))
 254
 255         p(mrts_mfc_lookups, "\t%lu multicast forwarding cache lookup%s\n");
 256         p2(mrts_mfc_misses, "\t%lu multicast forwarding cache miss%s\n");
 257         p(mrts_upcalls, "\t%lu upcall%s to mrouted\n");
 258         p(mrts_upq_ovflw, "\t%lu upcall queue overflow%s\n");
 259         p(mrts_upq_sockfull,
 260             "\t%lu upcall%s dropped due to full socket buffer\n");
 261         p(mrts_cache_cleanups, "\t%lu cache cleanup%s\n");
 262         p(mrts_no_route, "\t%lu datagram%s with no route for origin\n");
 263         p(mrts_bad_tunnel, "\t%lu datagram%s arrived with bad tunneling\n");
 264         p(mrts_cant_tunnel, "\t%lu datagram%s could not be tunneled\n");
 265         p(mrts_wrong_if, "\t%lu datagram%s arrived on wrong interface\n");
 266         p(mrts_drop_sel, "\t%lu datagram%s selectively dropped\n");
 267         p(mrts_q_overflow, "\t%lu datagram%s dropped due to queue overflow\n");
 268         p(mrts_pkt2large, "\t%lu datagram%s dropped for being too large\n");
 269
 270 #undef  p2
 271 #undef  p
 272 }