mbuf.c revision 16080 
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
35static char sccsid[] = "@(#)mbuf.c	8.1 (Berkeley) 6/6/93";
36#endif /* not lint */
37
38#include <sys/param.h>
39#include <sys/protosw.h>
40#include <sys/socket.h>
41#include <sys/mbuf.h>
42
43#include <stdio.h>
44#include "netstat.h"
45
46#define	YES	1
47typedef int bool;
48
49struct	mbstat mbstat;
50
51static struct mbtypes {
52	int	mt_type;
53	char	*mt_name;
54} mbtypes[] = {
55	{ MT_DATA,	"data" },
56	{ MT_OOBDATA,	"oob data" },
57	{ MT_CONTROL,	"ancillary data" },
58	{ MT_HEADER,	"packet headers" },
59	{ MT_SOCKET,	"socket structures" },			/* XXX */
60	{ MT_PCB,	"protocol control blocks" },		/* XXX */
61	{ MT_RTABLE,	"routing table entries" },		/* XXX */
62	{ MT_HTABLE,	"IMP host table entries" },		/* XXX */
63	{ MT_ATABLE,	"address resolution tables" },
64	{ MT_FTABLE,	"fragment reassembly queue headers" },	/* XXX */
65	{ MT_SONAME,	"socket names and addresses" },
66	{ MT_SOOPTS,	"socket options" },
67	{ MT_RIGHTS,	"access rights" },
68	{ MT_IFADDR,	"interface addresses" },		/* XXX */
69	{ 0, 0 }
70};
71
72int nmbtypes = sizeof(mbstat.m_mtypes) / sizeof(short);
73bool seen[256];			/* "have we seen this type yet?" */
74
75/*
76 * Print mbuf statistics.
77 */
78void
79mbpr(mbaddr)
80	u_long mbaddr;
81{
82	register int totmem, totfree, totmbufs;
83	register int i;
84	register struct mbtypes *mp;
85
86	if (nmbtypes != 256) {
87		warnx("unexpected change to mbstat; check source");
88		return;
89	}
90	if (mbaddr == 0) {
91		warnx("mbstat: symbol not in namelist");
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("%lu/%lu mbuf clusters 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("%lu requests for memory denied\n", mbstat.m_drops);
119	printf("%lu requests for memory delayed\n", mbstat.m_wait);
120	printf("%lu calls to protocol drain routines\n", mbstat.m_drain);
121}
122