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mbuf.c revision 1.12 
      1 /*	$NetBSD: mbuf.c,v 1.12 1997/10/19 05:50:04 lukem Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 1983, 1988, 1993
      5  *	The Regents of the University of California.  All rights reserved.
      6  *
      7  * Redistribution and use in source and binary forms, with or without
      8  * modification, are permitted provided that the following conditions
      9  * are met:
     10  * 1. Redistributions of source code must retain the above copyright
     11  *    notice, this list of conditions and the following disclaimer.
     12  * 2. Redistributions in binary form must reproduce the above copyright
     13  *    notice, this list of conditions and the following disclaimer in the
     14  *    documentation and/or other materials provided with the distribution.
     15  * 3. All advertising materials mentioning features or use of this software
     16  *    must display the following acknowledgement:
     17  *	This product includes software developed by the University of
     18  *	California, Berkeley and its contributors.
     19  * 4. Neither the name of the University nor the names of its contributors
     20  *    may be used to endorse or promote products derived from this software
     21  *    without specific prior written permission.
     22  *
     23  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     24  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     25  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     26  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     27  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     28  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     29  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     30  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     31  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     32  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     33  * SUCH DAMAGE.
     34  */
     35 
     36 #include <sys/cdefs.h>
     37 #ifndef lint
     38 #if 0
     39 static char sccsid[] = "from: @(#)mbuf.c	8.1 (Berkeley) 6/6/93";
     40 #else
     41 __RCSID("$NetBSD: mbuf.c,v 1.12 1997/10/19 05:50:04 lukem Exp $");
     42 #endif
     43 #endif /* not lint */
     44 
     45 #include <sys/param.h>
     46 #include <sys/protosw.h>
     47 #include <sys/socket.h>
     48 #include <sys/mbuf.h>
     49 
     50 #include <stdio.h>
     51 #include "netstat.h"
     52 
     53 #define	YES	1
     54 typedef int bool;
     55 
     56 struct	mbstat mbstat;
     57 
     58 static struct mbtypes {
     59 	int	mt_type;
     60 	char	*mt_name;
     61 } mbtypes[] = {
     62 	{ MT_DATA,	"data" },
     63 	{ MT_OOBDATA,	"oob data" },
     64 	{ MT_CONTROL,	"ancillary data" },
     65 	{ MT_HEADER,	"packet headers" },
     66 	{ MT_FTABLE,	"fragment reassembly queue headers" },	/* XXX */
     67 	{ MT_SONAME,	"socket names and addresses" },
     68 	{ MT_SOOPTS,	"socket options" },
     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, msizeaddr, mclbaddr)
     80 	u_long mbaddr;
     81 	u_long msizeaddr, mclbaddr;
     82 {
     83 	int totmem, totfree, totmbufs;
     84 	int i;
     85 	struct mbtypes *mp;
     86 
     87 	int	mclbytes,	msize;
     88 
     89 	if (nmbtypes != 256) {
     90 		fprintf(stderr,
     91 		    "%s: unexpected change to mbstat; check source\n",
     92 		        __progname);
     93 		return;
     94 	}
     95 	if (mbaddr == 0) {
     96 		fprintf(stderr, "%s: mbstat: symbol not in namelist\n",
     97 		    __progname);
     98 		return;
     99 	}
    100 /*XXX*/
    101 	if (msizeaddr != 0)
    102 		kread(msizeaddr, (char *)&msize, sizeof (msize));
    103 	else
    104 		msize = MSIZE;
    105 	if (mclbaddr != 0)
    106 		kread(mclbaddr, (char *)&mclbytes, sizeof (mclbytes));
    107 	else
    108 		mclbytes = MCLBYTES;
    109 /*XXX*/
    110 
    111 	if (kread(mbaddr, (char *)&mbstat, sizeof (mbstat)))
    112 		return;
    113 	totmbufs = 0;
    114 	for (mp = mbtypes; mp->mt_name; mp++)
    115 		totmbufs += mbstat.m_mtypes[mp->mt_type];
    116 	printf("%u mbufs in use:\n", totmbufs);
    117 	for (mp = mbtypes; mp->mt_name; mp++)
    118 		if (mbstat.m_mtypes[mp->mt_type]) {
    119 			seen[mp->mt_type] = YES;
    120 			printf("\t%u mbufs allocated to %s\n",
    121 			    mbstat.m_mtypes[mp->mt_type], mp->mt_name);
    122 		}
    123 	seen[MT_FREE] = YES;
    124 	for (i = 0; i < nmbtypes; i++)
    125 		if (!seen[i] && mbstat.m_mtypes[i]) {
    126 			printf("\t%u mbufs allocated to <mbuf type %d>\n",
    127 			    mbstat.m_mtypes[i], i);
    128 		}
    129 	printf("%lu/%lu mapped pages in use\n",
    130 		mbstat.m_clusters - mbstat.m_clfree, mbstat.m_clusters);
    131 	totmem = totmbufs * msize + mbstat.m_clusters * mclbytes;
    132 	totfree = mbstat.m_clfree * mclbytes;
    133 	printf("%u Kbytes allocated to network (%d%% in use)\n",
    134 		totmem / 1024, (totmem - totfree) * 100 / totmem);
    135 	printf("%lu requests for memory denied\n", mbstat.m_drops);
    136 	printf("%lu requests for memory delayed\n", mbstat.m_wait);
    137 	printf("%lu calls to protocol drain routines\n", mbstat.m_drain);
    138 }
    139