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
35#if 0
36static char sccsid[] = "@(#)mbuf.c 8.1 (Berkeley) 6/6/93";
37#endif
38static const char rcsid[] =
39 "$Id: mbuf.c,v 1.10 1998/04/24 04:30:27 dg Exp $";
40#endif /* not lint */
41
42#include <sys/param.h>
43#include <sys/mbuf.h>
44#include <sys/protosw.h>
45#include <sys/socket.h>
46#include <sys/sysctl.h>
47
48#include <err.h>
49#include <stdio.h>
50#include "netstat.h"
51
52#define YES 1
53typedef int bool;
54
55struct mbstat mbstat;
56
57static 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#ifdef MT_SOCKET
66 { MT_SOCKET, "socket structures" }, /* XXX */
67#endif
68#ifdef MT_PCB
69 { MT_PCB, "protocol control blocks" }, /* XXX */
70#endif
71 { MT_RTABLE, "routing table entries" }, /* XXX */
72#ifdef MT_HTABLE
73 { MT_HTABLE, "IMP host table entries" }, /* XXX */
74#endif
75#ifdef MT_ATABLE
76 { MT_ATABLE, "address resolution tables" },
77#endif
78 { MT_FTABLE, "fragment reassembly queue headers" }, /* XXX */
79 { MT_SONAME, "socket names and addresses" },
80 { MT_SOOPTS, "socket options" },
81#ifdef MT_RIGHTS
82 { MT_RIGHTS, "access rights" },
83#endif
84#ifdef MT_IFADDR
85 { MT_IFADDR, "interface addresses" }, /* XXX */
86#endif
87 { 0, 0 }
88};
89
90int nmbtypes = sizeof(mbstat.m_mtypes) / sizeof(short);
91bool seen[256]; /* "have we seen this type yet?" */
92
93/*
94 * Print mbuf statistics.
95 */
96void
97mbpr()
98{
99 register int totmem, totfree, totmbufs;
100 register int i;
101 register struct mbtypes *mp;
102 int name[3], nmbclusters, nmbclen;
103 size_t mbstatlen;
104
105 name[0] = CTL_KERN;
106 name[1] = KERN_IPC;
107 name[2] = KIPC_MBSTAT;
108 mbstatlen = sizeof mbstat;
109 if (sysctl(name, 3, &mbstat, &mbstatlen, 0, 0) < 0) {
110 warn("sysctl: retrieving mbstat");
111 return;
112 }
113
114 name[2] = KIPC_NMBCLUSTERS;
115 nmbclen = sizeof(int);
116 if (sysctl(name, 3, &nmbclusters, &nmbclen, 0, 0) < 0) {
117 warn("sysctl: retrieving nmbclusters");
118 return;
119 }
120#undef MSIZE
121#define MSIZE (mbstat.m_msize)
122#undef MCLBYTES
123#define MCLBYTES (mbstat.m_mclbytes)
124
125 if (nmbtypes != 256) {
126 warnx("unexpected change to mbstat; check source");
127 return;
128 }
129
130 totmbufs = 0;
131 for (mp = mbtypes; mp->mt_name; mp++)
132 totmbufs += mbstat.m_mtypes[mp->mt_type];
133 printf("%u/%u mbufs in use:\n", totmbufs, mbstat.m_mbufs);
134 for (mp = mbtypes; mp->mt_name; mp++)
135 if (mbstat.m_mtypes[mp->mt_type]) {
136 seen[mp->mt_type] = YES;
137 printf("\t%u mbufs allocated to %s\n",
138 mbstat.m_mtypes[mp->mt_type], mp->mt_name);
139 }
140 seen[MT_FREE] = YES;
141 for (i = 0; i < nmbtypes; i++)
142 if (!seen[i] && mbstat.m_mtypes[i]) {
143 printf("\t%u mbufs allocated to <mbuf type %d>\n",
144 mbstat.m_mtypes[i], i);
145 }
146 printf("%lu/%lu/%lu mbuf clusters in use (current/peak/max)\n",
147 mbstat.m_clusters - mbstat.m_clfree, mbstat.m_clusters, nmbclusters);
148 totmem = mbstat.m_mbufs * MSIZE + mbstat.m_clusters * MCLBYTES;
149 totfree = mbstat.m_clfree * MCLBYTES +
150 MSIZE * (mbstat.m_mbufs - totmbufs);
151 printf("%u Kbytes allocated to network (%d%% in use)\n",
152 totmem / 1024, (unsigned) (totmem - totfree) * 100 / totmem);
153 printf("%lu requests for memory denied\n", mbstat.m_drops);
154 printf("%lu requests for memory delayed\n", mbstat.m_wait);
155 printf("%lu calls to protocol drain routines\n", mbstat.m_drain);
156}