workbench/network/common/C/netstat/mbuf.c

   1 /*
   2  * Copyright (c) 1983, 1988, 1993
   3  *      The Regents of the University of California.  All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  * 1. Redistributions of source code must retain the above copyright
   9  *    notice, this list of conditions and the following disclaimer.
  10  * 2. Redistributions in binary form must reproduce the above copyright
  11  *    notice, this list of conditions and the following disclaimer in the
  12  *    documentation and/or other materials provided with the distribution.
  13  * 3. All advertising materials mentioning features or use of this software
  14  *    must display the following acknowledgement:
  15  *      This product includes software developed by the University of
  16  *      California, Berkeley and its contributors.
  17  * 4. 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
  34 #ifndef lint
  35 static char sccsid[] = "@(#)mbuf.c      8.1 (Berkeley) 6/6/93";
  36 #endif /* not lint */
  37
  38 #include <sys/param.h>
  39 #include <sys/protosw.h>
  40 #include <sys/socket.h>
  41 #include <sys/mbuf.h>
  42
  43 #include <stdio.h>
  44 #include "netstat.h"
  45
  46 #define YES     1
  47 typedef int bool;
  48
  49 struct  mbstat mbstat;
  50
  51 static struct mbtypes {
  52         int     mt_type;
  53         char    *mt_name;
  54 } mbtypes[] = {
  55         { MT_DATA,      "data" },
  56         { MT_OOBDATA,   "oob data" },
  57         { MT_CONTROL,   "ancillary data" },
  58         { MT_HEADER,    "packet headers" },
  59         { MT_SOCKET,    "socket structures" },                  /* XXX */
  60         { MT_PCB,       "protocol control blocks" },            /* XXX */
  61         { MT_RTABLE,    "routing table entries" },              /* XXX */
  62         { MT_HTABLE,    "IMP host table entries" },             /* XXX */
  63         { MT_ATABLE,    "address resolution tables" },
  64         { MT_FTABLE,    "fragment reassembly queue headers" },  /* XXX */
  65         { MT_SONAME,    "socket names and addresses" },
  66         { MT_SOOPTS,    "socket options" },
  67         { MT_RIGHTS,    "access rights" },
  68         { MT_IFADDR,    "interface addresses" },                /* XXX */
  69         { 0, 0 }
  70 };
  71
  72 int nmbtypes = sizeof(mbstat.m_mtypes) / sizeof(short);
  73 bool seen[256];                 /* "have we seen this type yet?" */
  74
  75 /*
  76  * Print mbuf statistics.
  77  */
  78 void
  79 mbpr(mbaddr)
  80         u_long mbaddr;
  81 {
  82         register int totmem, totfree, totmbufs;
  83         register int i;
  84         register struct mbtypes *mp;
  85
  86         if (nmbtypes != 256) {
  87                 warnx("unexpected change to mbstat; check source");
  88                 return;
  89         }
  90         if (mbaddr == 0) {
  91                 warnx("mbstat: symbol not in namelist");
  92                 return;
  93         }
  94         if (kread(mbaddr, (char *)&mbstat, sizeof (mbstat)))
  95                 return;
  96         totmbufs = 0;
  97         for (mp = mbtypes; mp->mt_name; mp++)
  98                 totmbufs += mbstat.m_mtypes[mp->mt_type];
  99         printf("%u mbufs in use:\n", totmbufs);
 100         for (mp = mbtypes; mp->mt_name; mp++)
 101                 if (mbstat.m_mtypes[mp->mt_type]) {
 102                         seen[mp->mt_type] = YES;
 103                         printf("\t%u mbufs allocated to %s\n",
 104                             mbstat.m_mtypes[mp->mt_type], mp->mt_name);
 105                 }
 106         seen[MT_FREE] = YES;
 107         for (i = 0; i < nmbtypes; i++)
 108                 if (!seen[i] && mbstat.m_mtypes[i]) {
 109                         printf("\t%u mbufs allocated to <mbuf type %d>\n",
 110                             mbstat.m_mtypes[i], i);
 111                 }
 112         printf("%u/%u mbuf clusters in use\n",
 113                 mbstat.m_clusters - mbstat.m_clfree, mbstat.m_clusters);
 114         totmem = totmbufs * MSIZE + mbstat.m_clusters * MCLBYTES;
 115         totfree = mbstat.m_clfree * MCLBYTES;
 116         printf("%u Kbytes allocated to network (%d%% in use)\n",
 117                 totmem / 1024, (totmem - totfree) * 100 / totmem);
 118         printf("%u requests for memory denied\n", mbstat.m_drops);
 119         printf("%u requests for memory delayed\n", mbstat.m_wait);
 120         printf("%u calls to protocol drain routines\n", mbstat.m_drain);
 121 }