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mbuf.c revision 1.5 
      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[] = "from: @(#)mbuf.c	8.1 (Berkeley) 6/6/93";*/
     36 static char *rcsid = "$Id: mbuf.c,v 1.5 1994/05/13 08:08:16 mycroft Exp $";
     37 #endif /* not lint */
     38 
     39 #include <sys/param.h>
     40 #include <sys/protosw.h>
     41 #include <sys/socket.h>
     42 #include <sys/mbuf.h>
     43 
     44 #include <stdio.h>
     45 #include "netstat.h"
     46 
     47 #define	YES	1
     48 typedef int bool;
     49 
     50 struct	mbstat mbstat;
     51 
     52 static struct mbtypes {
     53 	int	mt_type;
     54 	char	*mt_name;
     55 } mbtypes[] = {
     56 	{ MT_DATA,	"data" },
     57 	{ MT_OOBDATA,	"oob data" },
     58 	{ MT_CONTROL,	"ancillary data" },
     59 	{ MT_HEADER,	"packet headers" },
     60 	{ MT_SOCKET,	"socket structures" },			/* XXX */
     61 	{ MT_PCB,	"protocol control blocks" },		/* XXX */
     62 	{ MT_RTABLE,	"routing table entries" },		/* XXX */
     63 	{ MT_HTABLE,	"IMP host table entries" },		/* XXX */
     64 	{ MT_ATABLE,	"address resolution tables" },
     65 	{ MT_FTABLE,	"fragment reassembly queue headers" },	/* XXX */
     66 	{ MT_SONAME,	"socket names and addresses" },
     67 	{ MT_SOOPTS,	"socket options" },
     68 	{ MT_RIGHTS,	"access rights" },
     69 	{ MT_IFADDR,	"interface addresses" },		/* XXX */
     70 	{ 0, 0 }
     71 };
     72 
     73 int nmbtypes = sizeof(mbstat.m_mtypes) / sizeof(short);
     74 bool seen[256];			/* "have we seen this type yet?" */
     75 
     76 /*
     77  * Print mbuf statistics.
     78  */
     79 void
     80 mbpr(mbaddr)
     81 	u_long mbaddr;
     82 {
     83 	register int totmem, totfree, totmbufs;
     84 	register int i;
     85 	register struct mbtypes *mp;
     86 
     87 	if (nmbtypes != 256) {
     88 		fprintf(stderr,
     89 		    "%s: unexpected change to mbstat; check source\n", prog);
     90 		return;
     91 	}
     92 	if (mbaddr == 0) {
     93 		fprintf(stderr, "%s: mbstat: symbol not in namelist\n", prog);
     94 		return;
     95 	}
     96 	if (kread(mbaddr, (char *)&mbstat, sizeof (mbstat)))
     97 		return;
     98 	totmbufs = 0;
     99 	for (mp = mbtypes; mp->mt_name; mp++)
    100 		totmbufs += mbstat.m_mtypes[mp->mt_type];
    101 	printf("%u mbufs in use:\n", totmbufs);
    102 	for (mp = mbtypes; mp->mt_name; mp++)
    103 		if (mbstat.m_mtypes[mp->mt_type]) {
    104 			seen[mp->mt_type] = YES;
    105 			printf("\t%u mbufs allocated to %s\n",
    106 			    mbstat.m_mtypes[mp->mt_type], mp->mt_name);
    107 		}
    108 	seen[MT_FREE] = YES;
    109 	for (i = 0; i < nmbtypes; i++)
    110 		if (!seen[i] && mbstat.m_mtypes[i]) {
    111 			printf("\t%u mbufs allocated to <mbuf type %d>\n",
    112 			    mbstat.m_mtypes[i], i);
    113 		}
    114 	printf("%u/%u mapped pages in use\n",
    115 		mbstat.m_clusters - mbstat.m_clfree, mbstat.m_clusters);
    116 	totmem = totmbufs * MSIZE + mbstat.m_clusters * MCLBYTES;
    117 	totfree = mbstat.m_clfree * MCLBYTES;
    118 	printf("%u Kbytes allocated to network (%d%% in use)\n",
    119 		totmem / 1024, (totmem - totfree) * 100 / totmem);
    120 	printf("%u requests for memory denied\n", mbstat.m_drops);
    121 	printf("%u requests for memory delayed\n", mbstat.m_wait);
    122 	printf("%u calls to protocol drain routines\n", mbstat.m_drain);
    123 }
    124