netstat.tproj/mroute.c

   1 /*
   2  * Copyright (c) 2008-2009 Apple Inc. All rights reserved.
   3  *
   4  * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
   5  *
   6  * This file contains Original Code and/or Modifications of Original Code
   7  * as defined in and that are subject to the Apple Public Source License
   8  * Version 2.0 (the 'License'). You may not use this file except in
   9  * compliance with the License. The rights granted to you under the License
  10  * may not be used to create, or enable the creation or redistribution of,
  11  * unlawful or unlicensed copies of an Apple operating system, or to
  12  * circumvent, violate, or enable the circumvention or violation of, any
  13  * terms of an Apple operating system software license agreement.
  14  *
  15  * Please obtain a copy of the License at
  16  * http://www.opensource.apple.com/apsl/ and read it before using this file.
  17  *
  18  * The Original Code and all software distributed under the License are
  19  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  20  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  21  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  22  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  23  * Please see the License for the specific language governing rights and
  24  * limitations under the License.
  25  *
  26  * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
  27  */
  28 /*
  29  * Copyright (c) 1989 Stephen Deering
  30  * Copyright (c) 1992, 1993
  31  *      The Regents of the University of California.  All rights reserved.
  32  *
  33  * This code is derived from software contributed to Berkeley by
  34  * Stephen Deering of Stanford University.
  35  *
  36  * Redistribution and use in source and binary forms, with or without
  37  * modification, are permitted provided that the following conditions
  38  * are met:
  39  * 1. Redistributions of source code must retain the above copyright
  40  *    notice, this list of conditions and the following disclaimer.
  41  * 2. Redistributions in binary form must reproduce the above copyright
  42  *    notice, this list of conditions and the following disclaimer in the
  43  *    documentation and/or other materials provided with the distribution.
  44  * 3. All advertising materials mentioning features or use of this software
  45  *    must display the following acknowledgement:
  46  *      This product includes software developed by the University of
  47  *      California, Berkeley and its contributors.
  48  * 4. Neither the name of the University nor the names of its contributors
  49  *    may be used to endorse or promote products derived from this software
  50  *    without specific prior written permission.
  51  *
  52  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  53  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  54  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  55  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  56  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  57  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  58  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  59  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  60  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  61  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  62  * SUCH DAMAGE.
  63  *
  64  *      @(#)mroute.c    8.2 (Berkeley) 4/28/95
  65  */
  66
  67 /*
  68  * Print DVMRP multicast routing structures and statistics.
  69  *
  70  * MROUTING 1.0
  71  */
  72
  73 #include <sys/param.h>
  74 #include <sys/queue.h>
  75 #include <sys/socket.h>
  76 #include <sys/socketvar.h>
  77 #include <sys/mbuf.h>
  78 #include <sys/time.h>
  79 #include <sys/sysctl.h>
  80
  81 #include <net/if.h>
  82 #include <netinet/in.h>
  83 #include <netinet/igmp.h>
  84 #include <net/route.h>
  85 #include <netinet/ip_mroute.h>
  86
  87 #include <stdio.h>
  88 #include <stdlib.h>
  89 #include "netstat.h"
  90
  91 void
  92 mroutepr(void)
  93 {
  94         struct mfc **mfctable = 0;
  95         struct vif viftable[CONFIG_MAXVIFS];
  96         struct mfc *m;
  97         register struct vif *v;
  98         register vifi_t vifi;
  99         register int i;
 100         register int banner_printed;
 101         register int saved_nflag;
 102         vifi_t maxvif = 0;
 103         size_t len;
 104
 105         saved_nflag = nflag;
 106         nflag = 1;
 107
 108         len = CONFIG_MAXVIFS * sizeof(struct vif);
 109         if (sysctlbyname("net.inet.ip.viftable", viftable, &len, 0, 0) == -1) {
 110                 //printf("No IPv4 multicast routing compiled into this system.\n");
 111                 return;
 112         }
 113
 114         banner_printed = 0;
 115         for (vifi = 0, v = viftable; vifi < CONFIG_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(" %9u  %9u\n", v->v_pkt_in, v->v_pkt_out);
 135         }
 136         if (!banner_printed)
 137                 printf("\nVirtual Interface Table is empty\n");
 138
 139         if (sysctlbyname("net.inet.ip.mfctable", 0, &len, 0, 0) == -1) {
 140                 //printf("No IPv4 multicast routing compiled into this system.\n");
 141                 return;
 142         }
 143         mfctable = malloc(len);
 144         if (mfctable == 0)
 145                 return;
 146         if (sysctlbyname("net.inet.ip.mfctable", mfctable, &len, 0, 0) == -1) {
 147                 //printf("No IPv4 multicast routing compiled into this system.\n");
 148                 return;
 149         }
 150         banner_printed = 0;
 151         for (i = 0; i < CONFIG_MFCTBLSIZ; ++i) {
 152                 m = mfctable[i];
 153                 while(m) {
 154                         if (!banner_printed) {
 155                                 printf("\nIPv4 Multicast Forwarding Cache\n"
 156                                        " Origin          Group            "
 157                                        " Packets In-Vif  Out-Vifs:Ttls\n");
 158                                 banner_printed = 1;
 159                         }
 160
 161                         printf(" %-15.15s", routename(m->mfc_origin.s_addr));
 162                         printf(" %-15.15s", routename(m->mfc_mcastgrp.s_addr));
 163                         printf(" %9u", m->mfc_pkt_cnt);
 164                         printf("  %3d   ", m->mfc_parent);
 165                         for (vifi = 0; vifi <= maxvif; vifi++) {
 166                                 if (m->mfc_ttls[vifi] > 0)
 167                                         printf(" %u:%u", vifi,
 168                                                m->mfc_ttls[vifi]);
 169                         }
 170                         printf("\n");
 171                         m = m->mfc_next;
 172                 }
 173         }
 174         if (!banner_printed)
 175                 printf("\nMulticast Routing Table is empty\n");
 176
 177         printf("\n");
 178         nflag = saved_nflag;
 179
 180         free(mfctable);
 181 }
 182
 183
 184 void
 185 mrt_stats()
 186 {
 187         struct mrtstat mrtstat;
 188         size_t len = sizeof(struct mrtstat);
 189
 190         if(sysctlbyname("net.inet.ip.mrtstat", &mrtstat, &len, 0, 0) == -1) {
 191                 //printf("No IPv4 multicast routing compiled into this system.\n");
 192                 return;
 193         }
 194
 195         printf("IPv4 multicast forwarding:\n");
 196         printf(" %10u multicast forwarding cache lookup%s\n",
 197           mrtstat.mrts_mfc_lookups, plural(mrtstat.mrts_mfc_lookups));
 198         printf(" %10u multicast forwarding cache miss%s\n",
 199           mrtstat.mrts_mfc_misses, plurales(mrtstat.mrts_mfc_misses));
 200         printf(" %10u upcall%s to mrouted\n",
 201           mrtstat.mrts_upcalls, plural(mrtstat.mrts_upcalls));
 202         printf(" %10u upcall queue overflow%s\n",
 203           mrtstat.mrts_upq_ovflw, plural(mrtstat.mrts_upq_ovflw));
 204         printf(" %10u upcall%s dropped due to full socket buffer\n",
 205           mrtstat.mrts_upq_sockfull, plural(mrtstat.mrts_upq_sockfull));
 206         printf(" %10u cache cleanup%s\n",
 207           mrtstat.mrts_cache_cleanups, plural(mrtstat.mrts_cache_cleanups));
 208         printf(" %10u datagram%s with no route for origin\n",
 209           mrtstat.mrts_no_route, plural(mrtstat.mrts_no_route));
 210         printf(" %10u datagram%s arrived with bad tunneling\n",
 211           mrtstat.mrts_bad_tunnel, plural(mrtstat.mrts_bad_tunnel));
 212         printf(" %10u datagram%s could not be tunneled\n",
 213           mrtstat.mrts_cant_tunnel, plural(mrtstat.mrts_cant_tunnel));
 214         printf(" %10u datagram%s arrived on wrong interface\n",
 215           mrtstat.mrts_wrong_if, plural(mrtstat.mrts_wrong_if));
 216         printf(" %10u datagram%s selectively dropped\n",
 217           mrtstat.mrts_drop_sel, plural(mrtstat.mrts_drop_sel));
 218         printf(" %10u datagram%s dropped due to queue overflow\n",
 219           mrtstat.mrts_q_overflow, plural(mrtstat.mrts_q_overflow));
 220         printf(" %10u datagram%s dropped for being too large\n",
 221           mrtstat.mrts_pkt2large, plural(mrtstat.mrts_pkt2large));
 222 }