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mbuf.c revision 1.8 
      1 /*	$NetBSD: mbuf.c,v 1.8 1995/10/03 21:42:41 thorpej 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 #ifndef lint
     37 #if 0
     38 static char sccsid[] = "from: @(#)mbuf.c	8.1 (Berkeley) 6/6/93";
     39 #else
     40 static char *rcsid = "$NetBSD: mbuf.c,v 1.8 1995/10/03 21:42:41 thorpej Exp $";
     41 #endif
     42 #endif /* not lint */
     43 
     44 #include <sys/param.h>
     45 #include <sys/protosw.h>
     46 #include <sys/socket.h>
     47 #include <sys/mbuf.h>
     48 
     49 #include <stdio.h>
     50 #include "netstat.h"
     51 
     52 #define	YES	1
     53 typedef int bool;
     54 
     55 struct	mbstat mbstat;
     56 
     57 static struct mbtypes {
     58 	int	mt_type;
     59 	char	*mt_name;
     60 } mbtypes[] = {
     61 	{ MT_DATA,	"data" },
     62 	{ MT_OOBDATA,	"oob data" },
     63 	{ MT_CONTROL,	"ancillary data" },
     64 	{ MT_HEADER,	"packet headers" },
     65 	{ MT_FTABLE,	"fragment reassembly queue headers" },	/* XXX */
     66 	{ MT_SONAME,	"socket names and addresses" },
     67 	{ MT_SOOPTS,	"socket options" },
     68 	{ 0, 0 }
     69 };
     70 
     71 int nmbtypes = sizeof(mbstat.m_mtypes) / sizeof(short);
     72 bool seen[256];			/* "have we seen this type yet?" */
     73 
     74 /*
     75  * Print mbuf statistics.
     76  */
     77 void
     78 mbpr(mbaddr)
     79 	u_long mbaddr;
     80 {
     81 	register int totmem, totfree, totmbufs;
     82 	register int i;
     83 	register struct mbtypes *mp;
     84 
     85 	if (nmbtypes != 256) {
     86 		fprintf(stderr,
     87 		    "%s: unexpected change to mbstat; check source\n", prog);
     88 		return;
     89 	}
     90 	if (mbaddr == 0) {
     91 		fprintf(stderr, "%s: mbstat: symbol not in namelist\n", prog);
     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 mapped pages 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 }
    122