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  * $FreeBSD: src/usr.bin/netstat/mroute.c,v 1.11.2.4 2001/09/17 14:53:17 ru Exp $
  40  * $DragonFly: src/usr.bin/netstat/mroute.c,v 1.5 2005/08/04 17:31:23 drhodus Exp $
  41  */
  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/protosw.h>
  54 #include <sys/mbuf.h>
  55 #include <sys/time.h>
  56
  57 #include <net/if.h>
  58 #include <netinet/in.h>
  59 #include <netinet/igmp.h>
  60 #include <net/route.h>
  61 #include <net/ip_mroute/ip_mroute.h>
  62
  63 #include <stdio.h>
  64 #include <stdlib.h>
  65 #include "netstat.h"
  66
  67 static void print_bw_meter(struct bw_meter *bw_meter, int *banner_printed);
  68
  69 void
  70 mroutepr(u_long mfcaddr, u_long vifaddr)
  71 {
  72         struct mfc *mfctable[MFCTBLSIZ];
  73         struct vif viftable[MAXVIFS];
  74         struct mfc mfc, *m;
  75         struct vif *v;
  76         vifi_t vifi;
  77         int i;
  78         int banner_printed;
  79         int saved_numeric_addr;
  80         vifi_t maxvif = 0;
  81
  82         if (mfcaddr == 0 || vifaddr == 0) {
  83                 printf("No IPv4 multicast routing compiled into this system.\n");
  84                 return;
  85         }
  86
  87         saved_numeric_addr = numeric_addr;
  88         numeric_addr = 1;
  89
  90         kread(vifaddr, (char *)&viftable, sizeof(viftable));
  91         banner_printed = 0;
  92         for (vifi = 0, v = viftable; vifi < MAXVIFS; ++vifi, ++v) {
  93                 if (v->v_lcl_addr.s_addr == 0)
  94                         continue;
  95
  96                 maxvif = vifi;
  97                 if (!banner_printed) {
  98                         printf("\nVirtual Interface Table\n"
  99                                " Vif   Thresh   Rate   Local-Address   "
 100                                "Remote-Address    Pkts-In   Pkts-Out\n");
 101                         banner_printed = 1;
 102                 }
 103
 104                 printf(" %2u    %6u   %4d   %-15.15s",
 105                                         /* opposite math of add_vif() */
 106                     vifi, v->v_threshold, v->v_rate_limit * 1000 / 1024,
 107                     routename(v->v_lcl_addr.s_addr));
 108                 printf(" %-15.15s", (v->v_flags & VIFF_TUNNEL) ?
 109                     routename(v->v_rmt_addr.s_addr) : "");
 110
 111                 printf(" %9lu  %9lu\n", v->v_pkt_in, v->v_pkt_out);
 112         }
 113         if (!banner_printed)
 114                 printf("\nVirtual Interface Table is empty\n");
 115
 116         kread(mfcaddr, (char *)&mfctable, sizeof(mfctable));
 117         banner_printed = 0;
 118         for (i = 0; i < MFCTBLSIZ; ++i) {
 119                 m = mfctable[i];
 120                 while(m) {
 121                         kread((u_long)m, (char *)&mfc, sizeof mfc);
 122
 123                         if (!banner_printed) {
 124                                 printf("\nIPv4 Multicast Forwarding Cache\n"
 125                                        " Origin          Group            "
 126                                        " Packets In-Vif  Out-Vifs:Ttls\n");
 127                                 banner_printed = 1;
 128                         }
 129
 130                         printf(" %-15.15s", routename(mfc.mfc_origin.s_addr));
 131                         printf(" %-15.15s", routename(mfc.mfc_mcastgrp.s_addr));
 132                         printf(" %9lu", mfc.mfc_pkt_cnt);
 133                         printf("  %3d   ", mfc.mfc_parent);
 134                         for (vifi = 0; vifi <= maxvif; vifi++) {
 135                                 if (mfc.mfc_ttls[vifi] > 0)
 136                                         printf(" %u:%u", vifi,
 137                                                mfc.mfc_ttls[vifi]);
 138                         }
 139                         printf("\n");
 140
 141                         /* Print the bw meter information */
 142                         {
 143                                 struct bw_meter bw_meter, *bwm;
 144                                 int banner_printed2 = 0;
 145
 146                                 bwm = mfc.mfc_bw_meter;
 147                                 while (bwm) {
 148                                     kread((u_long)bwm, (char *)&bw_meter,
 149                                                 sizeof bw_meter);
 150                                     print_bw_meter(&bw_meter,
 151                                                 &banner_printed2);
 152                                     bwm = bw_meter.bm_mfc_next;
 153                                 }
 154 #if 0   /* Don't ever print it? */
 155                                 if (! banner_printed2)
 156                                     printf("\n  No Bandwidth Meters\n");
 157 #endif
 158                         }
 159
 160                         m = mfc.mfc_next;
 161                 }
 162         }
 163         if (!banner_printed)
 164                 printf("\nMulticast Routing Table is empty\n");
 165
 166         printf("\n");
 167         numeric_addr = saved_numeric_addr;
 168 }
 169
 170 static void
 171 print_bw_meter(struct bw_meter *bw_meter, int *banner_printed)
 172 {
 173         char s0[256], s1[256], s2[256], s3[256];
 174         struct timeval now, end, delta;
 175
 176         gettimeofday(&now, NULL);
 177
 178         if (! *banner_printed) {
 179                 printf(" Bandwidth Meters\n");
 180                 printf("  %-30s", "Measured(Start|Packets|Bytes)");
 181                 printf(" %s", "Type");
 182                 printf("  %-30s", "Thresh(Interval|Packets|Bytes)");
 183                 printf(" Remain");
 184                 printf("\n");
 185                 *banner_printed = 1;
 186         }
 187
 188         /* The measured values */
 189         if (bw_meter->bm_flags & BW_METER_UNIT_PACKETS)
 190                 sprintf(s1, "%ju", (uintmax_t)bw_meter->bm_measured.b_packets);
 191         else
 192                 sprintf(s1, "?");
 193         if (bw_meter->bm_flags & BW_METER_UNIT_BYTES)
 194                 sprintf(s2, "%ju", (uintmax_t)bw_meter->bm_measured.b_bytes);
 195         else
 196                 sprintf(s2, "?");
 197         sprintf(s0, "%lu.%lu|%s|%s",
 198                 bw_meter->bm_start_time.tv_sec,
 199                 bw_meter->bm_start_time.tv_usec,
 200                 s1, s2);
 201         printf("  %-30s", s0);
 202
 203         /* The type of entry */
 204         sprintf(s0, "%s", "?");
 205         if (bw_meter->bm_flags & BW_METER_GEQ)
 206                 sprintf(s0, "%s", ">=");
 207         else if (bw_meter->bm_flags & BW_METER_LEQ)
 208                 sprintf(s0, "%s", "<=");
 209         printf("  %-3s", s0);
 210
 211         /* The threshold values */
 212         if (bw_meter->bm_flags & BW_METER_UNIT_PACKETS)
 213                 sprintf(s1, "%ju", (uintmax_t)bw_meter->bm_threshold.b_packets);
 214         else
 215                 sprintf(s1, "?");
 216         if (bw_meter->bm_flags & BW_METER_UNIT_BYTES)
 217                 sprintf(s2, "%ju", (uintmax_t)bw_meter->bm_threshold.b_bytes);
 218         else
 219                 sprintf(s2, "?");
 220         sprintf(s0, "%lu.%lu|%s|%s",
 221                 bw_meter->bm_threshold.b_time.tv_sec,
 222                 bw_meter->bm_threshold.b_time.tv_usec,
 223                 s1, s2);
 224         printf("  %-30s", s0);
 225
 226         /* Remaining time */
 227         timeradd(&bw_meter->bm_start_time,
 228                  &bw_meter->bm_threshold.b_time, &end);
 229         if (timercmp(&now, &end, <=)) {
 230                 timersub(&end, &now, &delta);
 231                 sprintf(s3, "%lu.%lu", delta.tv_sec, delta.tv_usec);
 232         } else {
 233                 /* Negative time */
 234                 timersub(&now, &end, &delta);
 235                 sprintf(s3, "-%lu.%lu", delta.tv_sec, delta.tv_usec);
 236         }
 237         printf(" %s", s3);
 238
 239         printf("\n");
 240 }
 241
 242 void
 243 mrt_stats(u_long mstaddr)
 244 {
 245         struct mrtstat mrtstat;
 246
 247         if (mstaddr == 0) {
 248                 printf("No IPv4 multicast routing compiled into this system.\n");
 249                 return;
 250         }
 251
 252         kread(mstaddr, (char *)&mrtstat, sizeof(mrtstat));
 253         printf("IPv4 multicast forwarding:\n");
 254
 255 #define p(f, m) if (mrtstat.f || sflag <= 1) \
 256         printf(m, mrtstat.f, plural(mrtstat.f))
 257 #define p2(f, m) if (mrtstat.f || sflag <= 1) \
 258         printf(m, mrtstat.f, plurales(mrtstat.f))
 259
 260         p(mrts_mfc_lookups, "\t%lu multicast forwarding cache lookup%s\n");
 261         p2(mrts_mfc_misses, "\t%lu multicast forwarding cache miss%s\n");
 262         p(mrts_upcalls, "\t%lu upcall%s to mrouted\n");
 263         p(mrts_upq_ovflw, "\t%lu upcall queue overflow%s\n");
 264         p(mrts_upq_sockfull,
 265             "\t%lu upcall%s dropped due to full socket buffer\n");
 266         p(mrts_cache_cleanups, "\t%lu cache cleanup%s\n");
 267         p(mrts_no_route, "\t%lu datagram%s with no route for origin\n");
 268         p(mrts_bad_tunnel, "\t%lu datagram%s arrived with bad tunneling\n");
 269         p(mrts_cant_tunnel, "\t%lu datagram%s could not be tunneled\n");
 270         p(mrts_wrong_if, "\t%lu datagram%s arrived on wrong interface\n");
 271         p(mrts_drop_sel, "\t%lu datagram%s selectively dropped\n");
 272         p(mrts_q_overflow, "\t%lu datagram%s dropped due to queue overflow\n");
 273         p(mrts_pkt2large, "\t%lu datagram%s dropped for being too large\n");
 274
 275 #undef  p2
 276 #undef  p
 277 }