Annotation of src/usr.bin/netstat/mbuf.c, Revision 1.5
1.5 ! millert 1: /* $OpenBSD: mbuf.c,v 1.4 1997/06/29 20:18:01 millert Exp $ */
1.2 deraadt 2: /* $NetBSD: mbuf.c,v 1.9 1996/05/07 02:55:03 thorpej Exp $ */
1.1 deraadt 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
39: static char sccsid[] = "from: @(#)mbuf.c 8.1 (Berkeley) 6/6/93";
40: #else
1.5 ! millert 41: static char *rcsid = "$OpenBSD: mbuf.c,v 1.4 1997/06/29 20:18:01 millert Exp $";
1.1 deraadt 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:
1.5 ! millert 50: #include <limits.h>
1.1 deraadt 51: #include <stdio.h>
52: #include "netstat.h"
53:
54: #define YES 1
55: typedef int bool;
56:
57: struct mbstat mbstat;
58:
59: static 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_FTABLE, "fragment reassembly queue headers" }, /* XXX */
68: { MT_SONAME, "socket names and addresses" },
69: { MT_SOOPTS, "socket options" },
70: { 0, 0 }
71: };
72:
73: int nmbtypes = sizeof(mbstat.m_mtypes) / sizeof(short);
74: bool seen[256]; /* "have we seen this type yet?" */
75:
76: /*
77: * Print mbuf statistics.
78: */
79: void
80: mbpr(mbaddr)
81: u_long mbaddr;
82: {
83: register int totmem, totfree, totmbufs;
84: register int i;
85: register struct mbtypes *mp;
86:
87: if (nmbtypes != 256) {
88: fprintf(stderr,
1.2 deraadt 89: "%s: unexpected change to mbstat; check source\n",
90: __progname);
1.1 deraadt 91: return;
92: }
93: if (mbaddr == 0) {
1.2 deraadt 94: fprintf(stderr, "%s: mbstat: symbol not in namelist\n",
95: __progname);
1.1 deraadt 96: return;
97: }
98: if (kread(mbaddr, (char *)&mbstat, sizeof (mbstat)))
99: return;
100: totmbufs = 0;
101: for (mp = mbtypes; mp->mt_name; mp++)
102: totmbufs += mbstat.m_mtypes[mp->mt_type];
103: printf("%u mbufs in use:\n", totmbufs);
104: for (mp = mbtypes; mp->mt_name; mp++)
105: if (mbstat.m_mtypes[mp->mt_type]) {
106: seen[mp->mt_type] = YES;
107: printf("\t%u mbufs allocated to %s\n",
108: mbstat.m_mtypes[mp->mt_type], mp->mt_name);
109: }
110: seen[MT_FREE] = YES;
111: for (i = 0; i < nmbtypes; i++)
112: if (!seen[i] && mbstat.m_mtypes[i]) {
113: printf("\t%u mbufs allocated to <mbuf type %d>\n",
114: mbstat.m_mtypes[i], i);
115: }
1.4 millert 116: printf("%lu/%lu mapped pages in use\n",
1.1 deraadt 117: mbstat.m_clusters - mbstat.m_clfree, mbstat.m_clusters);
118: totmem = totmbufs * MSIZE + mbstat.m_clusters * MCLBYTES;
119: totfree = mbstat.m_clfree * MCLBYTES;
120: printf("%u Kbytes allocated to network (%d%% in use)\n",
121: totmem / 1024, (totmem - totfree) * 100 / totmem);
1.4 millert 122: printf("%lu requests for memory denied\n", mbstat.m_drops);
123: printf("%lu requests for memory delayed\n", mbstat.m_wait);
124: printf("%lu calls to protocol drain routines\n", mbstat.m_drain);
1.1 deraadt 125: }
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