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