mbuf.c revision 1.6 
1/*	$OpenBSD: mbuf.c,v 1.6 1997/07/23 02:50:55 denny Exp $	*/
2/*	$NetBSD: mbuf.c,v 1.9 1996/05/07 02:55:03 thorpej Exp $	*/
3
4/*
5 * Copyright (c) 1983, 1988, 1993
6 *	The Regents of the University of California.  All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 *    notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 *    notice, this list of conditions and the following disclaimer in the
15 *    documentation and/or other materials provided with the distribution.
16 * 3. All advertising materials mentioning features or use of this software
17 *    must display the following acknowledgement:
18 *	This product includes software developed by the University of
19 *	California, Berkeley and its contributors.
20 * 4. Neither the name of the University nor the names of its contributors
21 *    may be used to endorse or promote products derived from this software
22 *    without specific prior written permission.
23 *
24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
27 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34 * SUCH DAMAGE.
35 */
36
37#ifndef lint
38#if 0
39static char sccsid[] = "from: @(#)mbuf.c	8.1 (Berkeley) 6/6/93";
40#else
41static char *rcsid = "$OpenBSD: mbuf.c,v 1.6 1997/07/23 02:50:55 denny 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 <limits.h>
51#include <stdio.h>
52#include "netstat.h"
53
54#define	YES	1
55typedef int bool;
56
57struct	mbstat mbstat;
58
59static struct mbtypes {
60	int	mt_type;
61	char	*mt_name;
62} mbtypes[] = {
63	{ MT_DATA,	"data" },
64	{ MT_OOBDATA,	"oob data" },
65	{ MT_CONTROL,	"ancillary data" },
66	{ MT_HEADER,	"packet headers" },
67	{ MT_SOCKET,	"socket structures" },			/* XXX */
68	{ MT_PCB,	"protocol control blocks" },		/* XXX */
69	{ MT_RTABLE,	"routing table entries" },		/* XXX */
70	{ MT_HTABLE,	"IMP host table entries" },		/* XXX */
71	{ MT_ATABLE,	"address resolution tables" },
72	{ MT_FTABLE,	"fragment reassembly queue headers" },	/* XXX */
73	{ MT_SONAME,	"socket names and addresses" },
74	{ MT_SOOPTS,	"socket options" },
75	{ MT_RIGHTS,	"access rights" },
76	{ MT_IFADDR,	"interface addresses" },		/* XXX */
77	{ 0, 0 }
78};
79
80int nmbtypes = sizeof(mbstat.m_mtypes) / sizeof(short);
81bool seen[256];			/* "have we seen this type yet?" */
82
83/*
84 * Print mbuf statistics.
85 */
86void
87mbpr(mbaddr)
88	u_long mbaddr;
89{
90	register int totmem, totfree, totmbufs;
91	register int i;
92	register struct mbtypes *mp;
93
94	if (nmbtypes != 256) {
95		fprintf(stderr,
96		    "%s: unexpected change to mbstat; check source\n",
97		        __progname);
98		return;
99	}
100	if (mbaddr == 0) {
101		fprintf(stderr, "%s: mbstat: symbol not in namelist\n",
102		    __progname);
103		return;
104	}
105	if (kread(mbaddr, (char *)&mbstat, sizeof (mbstat)))
106		return;
107	totmbufs = 0;
108	for (mp = mbtypes; mp->mt_name; mp++)
109		totmbufs += mbstat.m_mtypes[mp->mt_type];
110	printf("%u mbuf%s in use:\n", totmbufs, plural(totmbufs));
111	for (mp = mbtypes; mp->mt_name; mp++)
112		if (mbstat.m_mtypes[mp->mt_type]) {
113			seen[mp->mt_type] = YES;
114			printf("\t%u mbuf%s allocated to %s\n",
115			    mbstat.m_mtypes[mp->mt_type],
116			    plural((int)mbstat.m_mtypes[mp->mt_type]),
117			    mp->mt_name);
118		}
119	seen[MT_FREE] = YES;
120	for (i = 0; i < nmbtypes; i++)
121		if (!seen[i] && mbstat.m_mtypes[i]) {
122			printf("\t%u mbuf%s allocated to <mbuf type %d>\n",
123			    mbstat.m_mtypes[i],
124			    plural((int)mbstat.m_mtypes[i]), i);
125		}
126	printf("%lu/%lu mapped pages in use\n",
127		mbstat.m_clusters - mbstat.m_clfree, mbstat.m_clusters);
128	totmem = totmbufs * MSIZE + mbstat.m_clusters * MCLBYTES;
129	totfree = mbstat.m_clfree * MCLBYTES;
130	printf("%u Kbytes allocated to network (%d%% in use)\n",
131		totmem / 1024, (totmem - totfree) * 100 / totmem);
132	printf("%lu requests for memory denied\n", mbstat.m_drops);
133	printf("%lu requests for memory delayed\n", mbstat.m_wait);
134	printf("%lu calls to protocol drain routines\n", mbstat.m_drain);
135}
136