Annotation of src/usr.bin/netstat/mbuf.c, Revision 1.25
1.25 ! deraadt 1: /* $OpenBSD: mbuf.c,v 1.24 2005/12/21 01:40:24 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.
1.19 millert 16: * 3. Neither the name of the University nor the names of its contributors
1.1 deraadt 17: * may be used to endorse or promote products derived from this software
18: * without specific prior written permission.
19: *
20: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
21: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
24: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30: * SUCH DAMAGE.
31: */
32:
33: #ifndef lint
34: #if 0
35: static char sccsid[] = "from: @(#)mbuf.c 8.1 (Berkeley) 6/6/93";
36: #else
1.25 ! deraadt 37: static char *rcsid = "$OpenBSD: mbuf.c,v 1.24 2005/12/21 01:40:24 millert Exp $";
1.1 deraadt 38: #endif
39: #endif /* not lint */
1.8 provos 40:
1.1 deraadt 41: #include <sys/param.h>
42: #include <sys/protosw.h>
43: #include <sys/socket.h>
44: #include <sys/mbuf.h>
1.8 provos 45: #include <sys/pool.h>
1.13 angelos 46: #include <sys/sysctl.h>
1.1 deraadt 47:
1.24 millert 48: #include <errno.h>
1.13 angelos 49: #include <kvm.h>
1.5 millert 50: #include <limits.h>
1.1 deraadt 51: #include <stdio.h>
1.14 deraadt 52: #include <string.h>
1.17 deraadt 53: #include <unistd.h>
1.1 deraadt 54: #include "netstat.h"
55:
56: #define YES 1
57: typedef int bool;
58:
59: struct mbstat mbstat;
1.8 provos 60: struct pool mbpool, mclpool;
61:
1.13 angelos 62: extern kvm_t *kvmd;
1.1 deraadt 63:
64: static struct mbtypes {
65: int mt_type;
66: char *mt_name;
67: } mbtypes[] = {
68: { MT_DATA, "data" },
69: { MT_OOBDATA, "oob data" },
70: { MT_CONTROL, "ancillary data" },
71: { MT_HEADER, "packet headers" },
72: { MT_FTABLE, "fragment reassembly queue headers" }, /* XXX */
73: { MT_SONAME, "socket names and addresses" },
74: { MT_SOOPTS, "socket options" },
75: { 0, 0 }
76: };
77:
78: int nmbtypes = sizeof(mbstat.m_mtypes) / sizeof(short);
79: bool seen[256]; /* "have we seen this type yet?" */
80:
81: /*
82: * Print mbuf statistics.
83: */
84: void
1.25 ! deraadt 85: mbpr(void)
1.1 deraadt 86: {
1.9 mpech 87: int totmem, totused, totmbufs, totpct;
1.13 angelos 88: int i, mib[4], npools, flag = 0;
89: struct pool pool;
1.9 mpech 90: struct mbtypes *mp;
1.13 angelos 91: size_t size;
1.10 art 92: int page_size = getpagesize();
1.1 deraadt 93:
94: if (nmbtypes != 256) {
95: fprintf(stderr,
1.2 deraadt 96: "%s: unexpected change to mbstat; check source\n",
1.11 mickey 97: __progname);
1.1 deraadt 98: return;
99: }
1.13 angelos 100:
1.23 marius 101: mib[0] = CTL_KERN;
102: mib[1] = KERN_MBSTAT;
103: size = sizeof(mbstat);
104:
105: if (sysctl(mib, 2, &mbstat, &size, NULL, 0) < 0) {
106: printf("Can't retrieve mbuf statistics from the kernel: %s\n",
107: strerror(errno));
108: return;
109: }
110:
111: mib[0] = CTL_KERN;
112: mib[1] = KERN_POOL;
113: mib[2] = KERN_POOL_NPOOLS;
114: size = sizeof(npools);
115:
116: if (sysctl(mib, 3, &npools, &size, NULL, 0) < 0) {
117: printf("Can't figure out number of pools in kernel: %s\n",
118: strerror(errno));
119: return;
120: }
1.13 angelos 121:
1.23 marius 122: for (i = 1; npools; i++) {
123: char name[32];
1.13 angelos 124:
1.16 angelos 125: mib[0] = CTL_KERN;
1.23 marius 126: mib[1] = KERN_POOL;
127: mib[2] = KERN_POOL_POOL;
128: mib[3] = i;
129: size = sizeof(struct pool);
130: if (sysctl(mib, 4, &pool, &size, NULL, 0) < 0) {
131: if (errno == ENOENT)
132: continue;
133: printf("error getting pool: %s\n",
1.16 angelos 134: strerror(errno));
135: return;
136: }
1.23 marius 137: npools--;
138: mib[2] = KERN_POOL_NAME;
139: size = sizeof(name);
140: if (sysctl(mib, 4, &name, &size, NULL, 0) < 0) {
141: printf("error getting pool name: %s\n",
1.13 angelos 142: strerror(errno));
143: return;
144: }
145:
1.23 marius 146: if (!strncmp(name, "mbpl", strlen("mbpl"))) {
147: bcopy(&pool, &mbpool, sizeof(struct pool));
148: flag++;
149: } else {
150: if (!strncmp(name, "mclpl", strlen("mclpl"))) {
151: bcopy(&pool, &mclpool,
152: sizeof(struct pool));
1.13 angelos 153: flag++;
154: }
1.23 marius 155: }
1.13 angelos 156:
1.23 marius 157: if (flag == 2)
158: break;
1.1 deraadt 159: }
1.8 provos 160:
1.1 deraadt 161: totmbufs = 0;
162: for (mp = mbtypes; mp->mt_name; mp++)
163: totmbufs += mbstat.m_mtypes[mp->mt_type];
1.6 denny 164: printf("%u mbuf%s in use:\n", totmbufs, plural(totmbufs));
1.1 deraadt 165: for (mp = mbtypes; mp->mt_name; mp++)
166: if (mbstat.m_mtypes[mp->mt_type]) {
167: seen[mp->mt_type] = YES;
1.6 denny 168: printf("\t%u mbuf%s allocated to %s\n",
169: mbstat.m_mtypes[mp->mt_type],
170: plural((int)mbstat.m_mtypes[mp->mt_type]),
171: mp->mt_name);
1.1 deraadt 172: }
173: seen[MT_FREE] = YES;
174: for (i = 0; i < nmbtypes; i++)
175: if (!seen[i] && mbstat.m_mtypes[i]) {
1.6 denny 176: printf("\t%u mbuf%s allocated to <mbuf type %d>\n",
177: mbstat.m_mtypes[i],
178: plural((int)mbstat.m_mtypes[i]), i);
1.1 deraadt 179: }
1.21 tedu 180: printf("%lu/%lu/%lu mbuf clusters in use (current/peak/max)\n",
181: (u_long)(mclpool.pr_nout),
182: (u_long)(mclpool.pr_hiwat * mclpool.pr_itemsperpage),
183: (u_long)(mclpool.pr_maxpages * mclpool.pr_itemsperpage));
1.10 art 184: totmem = (mbpool.pr_npages * page_size) +
185: (mclpool.pr_npages * page_size);
1.21 tedu 186: totused = mbpool.pr_nout * mbpool.pr_size +
187: mclpool.pr_nout * mclpool.pr_size;
1.8 provos 188: totpct = (totmem == 0)? 0 : ((totused * 100)/totmem);
1.1 deraadt 189: printf("%u Kbytes allocated to network (%d%% in use)\n",
1.8 provos 190: totmem / 1024, totpct);
1.4 millert 191: printf("%lu requests for memory denied\n", mbstat.m_drops);
192: printf("%lu requests for memory delayed\n", mbstat.m_wait);
193: printf("%lu calls to protocol drain routines\n", mbstat.m_drain);
1.1 deraadt 194: }
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