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/* $OpenBSD: mbuf.c,v 1.12 2002/02/23 01:12:54 art Exp $ */
/* $NetBSD: mbuf.c,v 1.9 1996/05/07 02:55:03 thorpej Exp $ */
/*
* Copyright (c) 1983, 1988, 1993
* The Regents of the University of California. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#ifndef lint
#if 0
static char sccsid[] = "from: @(#)mbuf.c 8.1 (Berkeley) 6/6/93";
#else
static char *rcsid = "$OpenBSD: mbuf.c,v 1.12 2002/02/23 01:12:54 art Exp $";
#endif
#endif /* not lint */
#include <sys/param.h>
#include <sys/protosw.h>
#include <sys/socket.h>
#include <sys/mbuf.h>
#include <sys/pool.h>
#include <limits.h>
#include <stdio.h>
#include "netstat.h"
#define YES 1
typedef int bool;
struct mbstat mbstat;
struct pool mbpool, mclpool;
static struct mbtypes {
int mt_type;
char *mt_name;
} mbtypes[] = {
{ MT_DATA, "data" },
{ MT_OOBDATA, "oob data" },
{ MT_CONTROL, "ancillary data" },
{ MT_HEADER, "packet headers" },
{ MT_FTABLE, "fragment reassembly queue headers" }, /* XXX */
{ MT_SONAME, "socket names and addresses" },
{ MT_SOOPTS, "socket options" },
{ 0, 0 }
};
int nmbtypes = sizeof(mbstat.m_mtypes) / sizeof(short);
bool seen[256]; /* "have we seen this type yet?" */
/*
* Print mbuf statistics.
*/
void
mbpr(mbaddr, mbpooladdr, mclpooladdr)
u_long mbaddr;
u_long mbpooladdr, mclpooladdr;
{
int totmem, totused, totmbufs, totpct;
int i;
struct mbtypes *mp;
int page_size = getpagesize();
if (nmbtypes != 256) {
fprintf(stderr,
"%s: unexpected change to mbstat; check source\n",
__progname);
return;
}
if (mbaddr == 0) {
fprintf(stderr, "%s: mbstat: symbol not in namelist\n",
__progname);
return;
}
if (kread(mbaddr, (char *)&mbstat, sizeof (mbstat)))
return;
if (kread(mbpooladdr, (char *)&mbpool, sizeof (mbpool)))
return;
if (kread(mclpooladdr, (char *)&mclpool, sizeof (mclpool)))
return;
totmbufs = 0;
for (mp = mbtypes; mp->mt_name; mp++)
totmbufs += mbstat.m_mtypes[mp->mt_type];
printf("%u mbuf%s in use:\n", totmbufs, plural(totmbufs));
for (mp = mbtypes; mp->mt_name; mp++)
if (mbstat.m_mtypes[mp->mt_type]) {
seen[mp->mt_type] = YES;
printf("\t%u mbuf%s allocated to %s\n",
mbstat.m_mtypes[mp->mt_type],
plural((int)mbstat.m_mtypes[mp->mt_type]),
mp->mt_name);
}
seen[MT_FREE] = YES;
for (i = 0; i < nmbtypes; i++)
if (!seen[i] && mbstat.m_mtypes[i]) {
printf("\t%u mbuf%s allocated to <mbuf type %d>\n",
mbstat.m_mtypes[i],
plural((int)mbstat.m_mtypes[i]), i);
}
printf("%lu/%lu mapped pages in use\n",
(u_long)(mclpool.pr_nget - mclpool.pr_nput),
((u_long)mclpool.pr_npages * mclpool.pr_itemsperpage));
totmem = (mbpool.pr_npages * page_size) +
(mclpool.pr_npages * page_size);
totused = (mbpool.pr_nget - mbpool.pr_nput) * mbpool.pr_size +
(mclpool.pr_nget - mclpool.pr_nput) * mclpool.pr_size;
totpct = (totmem == 0)? 0 : ((totused * 100)/totmem);
printf("%u Kbytes allocated to network (%d%% in use)\n",
totmem / 1024, totpct);
printf("%lu requests for memory denied\n", mbstat.m_drops);
printf("%lu requests for memory delayed\n", mbstat.m_wait);
printf("%lu calls to protocol drain routines\n", mbstat.m_drain);
}
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