Annotation of src/usr.bin/netstat/mbuf.c, Revision 1.33
1.33 ! dlg 1: /* $OpenBSD: mbuf.c,v 1.32 2014/07/02 00:12:34 dlg 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>
1.27 deraadt 39: #include <net/if.h>
1.1 deraadt 40:
1.24 millert 41: #include <errno.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;
1.32 dlg 52: struct kinfo_pool mbpool, mclpools[MCLPOOLS];
1.27 deraadt 53: int mclp;
54: char *mclnames[] = {
55: "mcl2k", "mcl4k", "mcl8k", "mcl9k", "mcl12k", "mcl16k", "mcl64k"
56: };
57: char **mclnamep = mclnames;
1.1 deraadt 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
1.25 deraadt 80: mbpr(void)
1.1 deraadt 81: {
1.29 claudio 82: unsigned long totmem, totused, totmbufs;
83: int totpct;
1.27 deraadt 84: int i, mib[4], npools;
1.32 dlg 85: struct kinfo_pool pool;
1.9 mpech 86: struct mbtypes *mp;
1.13 angelos 87: size_t size;
1.10 art 88: int page_size = getpagesize();
1.1 deraadt 89:
90: if (nmbtypes != 256) {
91: fprintf(stderr,
1.2 deraadt 92: "%s: unexpected change to mbstat; check source\n",
1.11 mickey 93: __progname);
1.1 deraadt 94: return;
95: }
1.13 angelos 96:
1.23 marius 97: mib[0] = CTL_KERN;
98: mib[1] = KERN_MBSTAT;
99: size = sizeof(mbstat);
100:
101: if (sysctl(mib, 2, &mbstat, &size, NULL, 0) < 0) {
102: printf("Can't retrieve mbuf statistics from the kernel: %s\n",
103: strerror(errno));
104: return;
105: }
106:
107: mib[0] = CTL_KERN;
108: mib[1] = KERN_POOL;
109: mib[2] = KERN_POOL_NPOOLS;
110: size = sizeof(npools);
111:
112: if (sysctl(mib, 3, &npools, &size, NULL, 0) < 0) {
113: printf("Can't figure out number of pools in kernel: %s\n",
114: strerror(errno));
115: return;
116: }
1.13 angelos 117:
1.23 marius 118: for (i = 1; npools; i++) {
119: char name[32];
1.13 angelos 120:
1.16 angelos 121: mib[0] = CTL_KERN;
1.23 marius 122: mib[1] = KERN_POOL;
123: mib[2] = KERN_POOL_POOL;
124: mib[3] = i;
1.32 dlg 125: size = sizeof(pool);
1.23 marius 126: if (sysctl(mib, 4, &pool, &size, NULL, 0) < 0) {
127: if (errno == ENOENT)
128: continue;
129: printf("error getting pool: %s\n",
1.16 angelos 130: strerror(errno));
131: return;
132: }
1.23 marius 133: npools--;
134: mib[2] = KERN_POOL_NAME;
135: size = sizeof(name);
136: if (sysctl(mib, 4, &name, &size, NULL, 0) < 0) {
137: printf("error getting pool name: %s\n",
1.13 angelos 138: strerror(errno));
139: return;
140: }
141:
1.33 ! dlg 142: if (!strncmp(name, "mbufpl", strlen("mbufpl")))
1.32 dlg 143: bcopy(&pool, &mbpool, sizeof(pool));
1.30 deraadt 144: else if (mclp < sizeof(mclpools) / sizeof(mclpools[0]) &&
1.27 deraadt 145: !strncmp(name, *mclnamep, strlen(*mclnamep))) {
146: bcopy(&pool, &mclpools[mclp++],
1.32 dlg 147: sizeof(pool));
1.27 deraadt 148: mclnamep++;
1.23 marius 149: }
1.1 deraadt 150: }
1.8 provos 151:
1.1 deraadt 152: totmbufs = 0;
153: for (mp = mbtypes; mp->mt_name; mp++)
1.29 claudio 154: totmbufs += (unsigned int)mbstat.m_mtypes[mp->mt_type];
155: printf("%lu mbuf%s in use:\n", totmbufs, plural(totmbufs));
1.1 deraadt 156: for (mp = mbtypes; mp->mt_name; mp++)
157: if (mbstat.m_mtypes[mp->mt_type]) {
158: seen[mp->mt_type] = YES;
1.6 denny 159: printf("\t%u mbuf%s allocated to %s\n",
160: mbstat.m_mtypes[mp->mt_type],
1.29 claudio 161: plural(mbstat.m_mtypes[mp->mt_type]),
1.6 denny 162: mp->mt_name);
1.1 deraadt 163: }
164: seen[MT_FREE] = YES;
165: for (i = 0; i < nmbtypes; i++)
166: if (!seen[i] && mbstat.m_mtypes[i]) {
1.6 denny 167: printf("\t%u mbuf%s allocated to <mbuf type %d>\n",
168: mbstat.m_mtypes[i],
1.29 claudio 169: plural(mbstat.m_mtypes[i]), i);
1.1 deraadt 170: }
1.29 claudio 171: totmem = (mbpool.pr_npages * (unsigned long)page_size);
1.27 deraadt 172: totused = mbpool.pr_nout * mbpool.pr_size;
173: for (i = 0; i < mclp; i++) {
1.29 claudio 174: printf("%u/%lu/%lu mbuf %d byte clusters in use (current/peak/max)\n",
175: mclpools[i].pr_nout,
176: (u_long)mclpools[i].pr_hiwat * mclpools[i].pr_itemsperpage,
177: (u_long)mclpools[i].pr_maxpages * mclpools[i].pr_itemsperpage,
1.27 deraadt 178: mclpools[i].pr_size);
1.29 claudio 179: totmem += (mclpools[i].pr_npages * (unsigned long)page_size);
1.27 deraadt 180: totused += mclpools[i].pr_nout * mclpools[i].pr_size;
181: }
182:
1.29 claudio 183: totpct = (totmem == 0)? 0 : (totused/(totmem / 100));
184: printf("%lu Kbytes allocated to network (%d%% in use)\n",
1.8 provos 185: totmem / 1024, totpct);
1.4 millert 186: printf("%lu requests for memory denied\n", mbstat.m_drops);
187: printf("%lu requests for memory delayed\n", mbstat.m_wait);
188: printf("%lu calls to protocol drain routines\n", mbstat.m_drain);
1.1 deraadt 189: }
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