Annotation of src/usr.bin/netstat/mbuf.c, Revision 1.26
1.26 ! deraadt 1: /* $OpenBSD: mbuf.c,v 1.25 2007/12/11 20:14:45 deraadt 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: */
1.8 provos 32:
1.1 deraadt 33: #include <sys/param.h>
34: #include <sys/protosw.h>
35: #include <sys/socket.h>
36: #include <sys/mbuf.h>
1.8 provos 37: #include <sys/pool.h>
1.13 angelos 38: #include <sys/sysctl.h>
1.1 deraadt 39:
1.24 millert 40: #include <errno.h>
1.13 angelos 41: #include <kvm.h>
1.5 millert 42: #include <limits.h>
1.1 deraadt 43: #include <stdio.h>
1.14 deraadt 44: #include <string.h>
1.17 deraadt 45: #include <unistd.h>
1.1 deraadt 46: #include "netstat.h"
47:
48: #define YES 1
49: typedef int bool;
50:
51: struct mbstat mbstat;
1.8 provos 52: struct pool mbpool, mclpool;
53:
1.13 angelos 54: extern kvm_t *kvmd;
1.1 deraadt 55:
56: static struct mbtypes {
57: int mt_type;
58: char *mt_name;
59: } mbtypes[] = {
60: { MT_DATA, "data" },
61: { MT_OOBDATA, "oob data" },
62: { MT_CONTROL, "ancillary data" },
63: { MT_HEADER, "packet headers" },
64: { MT_FTABLE, "fragment reassembly queue headers" }, /* XXX */
65: { MT_SONAME, "socket names and addresses" },
66: { MT_SOOPTS, "socket options" },
67: { 0, 0 }
68: };
69:
70: int nmbtypes = sizeof(mbstat.m_mtypes) / sizeof(short);
71: bool seen[256]; /* "have we seen this type yet?" */
72:
73: /*
74: * Print mbuf statistics.
75: */
76: void
1.25 deraadt 77: mbpr(void)
1.1 deraadt 78: {
1.9 mpech 79: int totmem, totused, totmbufs, totpct;
1.13 angelos 80: int i, mib[4], npools, flag = 0;
81: struct pool pool;
1.9 mpech 82: struct mbtypes *mp;
1.13 angelos 83: size_t size;
1.10 art 84: int page_size = getpagesize();
1.1 deraadt 85:
86: if (nmbtypes != 256) {
87: fprintf(stderr,
1.2 deraadt 88: "%s: unexpected change to mbstat; check source\n",
1.11 mickey 89: __progname);
1.1 deraadt 90: return;
91: }
1.13 angelos 92:
1.23 marius 93: mib[0] = CTL_KERN;
94: mib[1] = KERN_MBSTAT;
95: size = sizeof(mbstat);
96:
97: if (sysctl(mib, 2, &mbstat, &size, NULL, 0) < 0) {
98: printf("Can't retrieve mbuf statistics from the kernel: %s\n",
99: strerror(errno));
100: return;
101: }
102:
103: mib[0] = CTL_KERN;
104: mib[1] = KERN_POOL;
105: mib[2] = KERN_POOL_NPOOLS;
106: size = sizeof(npools);
107:
108: if (sysctl(mib, 3, &npools, &size, NULL, 0) < 0) {
109: printf("Can't figure out number of pools in kernel: %s\n",
110: strerror(errno));
111: return;
112: }
1.13 angelos 113:
1.23 marius 114: for (i = 1; npools; i++) {
115: char name[32];
1.13 angelos 116:
1.16 angelos 117: mib[0] = CTL_KERN;
1.23 marius 118: mib[1] = KERN_POOL;
119: mib[2] = KERN_POOL_POOL;
120: mib[3] = i;
121: size = sizeof(struct pool);
122: if (sysctl(mib, 4, &pool, &size, NULL, 0) < 0) {
123: if (errno == ENOENT)
124: continue;
125: printf("error getting pool: %s\n",
1.16 angelos 126: strerror(errno));
127: return;
128: }
1.23 marius 129: npools--;
130: mib[2] = KERN_POOL_NAME;
131: size = sizeof(name);
132: if (sysctl(mib, 4, &name, &size, NULL, 0) < 0) {
133: printf("error getting pool name: %s\n",
1.13 angelos 134: strerror(errno));
135: return;
136: }
137:
1.23 marius 138: if (!strncmp(name, "mbpl", strlen("mbpl"))) {
139: bcopy(&pool, &mbpool, sizeof(struct pool));
140: flag++;
141: } else {
142: if (!strncmp(name, "mclpl", strlen("mclpl"))) {
143: bcopy(&pool, &mclpool,
144: sizeof(struct pool));
1.13 angelos 145: flag++;
146: }
1.23 marius 147: }
1.13 angelos 148:
1.23 marius 149: if (flag == 2)
150: break;
1.1 deraadt 151: }
1.8 provos 152:
1.1 deraadt 153: totmbufs = 0;
154: for (mp = mbtypes; mp->mt_name; mp++)
155: totmbufs += mbstat.m_mtypes[mp->mt_type];
1.6 denny 156: printf("%u mbuf%s in use:\n", totmbufs, plural(totmbufs));
1.1 deraadt 157: for (mp = mbtypes; mp->mt_name; mp++)
158: if (mbstat.m_mtypes[mp->mt_type]) {
159: seen[mp->mt_type] = YES;
1.6 denny 160: printf("\t%u mbuf%s allocated to %s\n",
161: mbstat.m_mtypes[mp->mt_type],
162: plural((int)mbstat.m_mtypes[mp->mt_type]),
163: mp->mt_name);
1.1 deraadt 164: }
165: seen[MT_FREE] = YES;
166: for (i = 0; i < nmbtypes; i++)
167: if (!seen[i] && mbstat.m_mtypes[i]) {
1.6 denny 168: printf("\t%u mbuf%s allocated to <mbuf type %d>\n",
169: mbstat.m_mtypes[i],
170: plural((int)mbstat.m_mtypes[i]), i);
1.1 deraadt 171: }
1.21 tedu 172: printf("%lu/%lu/%lu mbuf clusters in use (current/peak/max)\n",
173: (u_long)(mclpool.pr_nout),
174: (u_long)(mclpool.pr_hiwat * mclpool.pr_itemsperpage),
175: (u_long)(mclpool.pr_maxpages * mclpool.pr_itemsperpage));
1.10 art 176: totmem = (mbpool.pr_npages * page_size) +
177: (mclpool.pr_npages * page_size);
1.21 tedu 178: totused = mbpool.pr_nout * mbpool.pr_size +
179: mclpool.pr_nout * mclpool.pr_size;
1.8 provos 180: totpct = (totmem == 0)? 0 : ((totused * 100)/totmem);
1.1 deraadt 181: printf("%u Kbytes allocated to network (%d%% in use)\n",
1.8 provos 182: totmem / 1024, totpct);
1.4 millert 183: printf("%lu requests for memory denied\n", mbstat.m_drops);
184: printf("%lu requests for memory delayed\n", mbstat.m_wait);
185: printf("%lu calls to protocol drain routines\n", mbstat.m_drain);
1.1 deraadt 186: }
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