Annotation of src/usr.bin/netstat/mbuf.c, Revision 1.39
1.39 ! jsg 1: /* $OpenBSD: mbuf.c,v 1.38 2016/10/28 05:46:14 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/socket.h>
1.37 sthen 34: #include <sys/queue.h>
1.1 deraadt 35: #include <sys/mbuf.h>
1.35 deraadt 36: #include <sys/protosw.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>
1.39 ! jsg 40: #include <netinet/in.h>
1.1 deraadt 41:
1.24 millert 42: #include <errno.h>
1.5 millert 43: #include <limits.h>
1.1 deraadt 44: #include <stdio.h>
1.14 deraadt 45: #include <string.h>
1.17 deraadt 46: #include <unistd.h>
1.1 deraadt 47: #include "netstat.h"
48:
49: #define YES 1
50: typedef int bool;
51:
52: struct mbstat mbstat;
1.32 dlg 53: struct kinfo_pool mbpool, mclpools[MCLPOOLS];
1.27 deraadt 54: int mclp;
55: char *mclnames[] = {
1.38 dlg 56: "mcl2k",
57: "mcl2k2",
58: "mcl4k",
59: "mcl8k",
60: "mcl9k",
61: "mcl12k",
62: "mcl16k",
63: "mcl64k"
1.27 deraadt 64: };
65: char **mclnamep = mclnames;
1.1 deraadt 66:
67: static struct mbtypes {
68: int mt_type;
69: char *mt_name;
70: } mbtypes[] = {
71: { MT_DATA, "data" },
72: { MT_OOBDATA, "oob data" },
73: { MT_CONTROL, "ancillary data" },
74: { MT_HEADER, "packet headers" },
75: { MT_FTABLE, "fragment reassembly queue headers" }, /* XXX */
76: { MT_SONAME, "socket names and addresses" },
77: { MT_SOOPTS, "socket options" },
78: { 0, 0 }
79: };
80:
81: int nmbtypes = sizeof(mbstat.m_mtypes) / sizeof(short);
82: bool seen[256]; /* "have we seen this type yet?" */
83:
84: /*
85: * Print mbuf statistics.
86: */
87: void
1.25 deraadt 88: mbpr(void)
1.1 deraadt 89: {
1.29 claudio 90: unsigned long totmem, totused, totmbufs;
91: int totpct;
1.27 deraadt 92: int i, mib[4], npools;
1.32 dlg 93: struct kinfo_pool pool;
1.9 mpech 94: struct mbtypes *mp;
1.13 angelos 95: size_t size;
1.1 deraadt 96:
97: if (nmbtypes != 256) {
98: fprintf(stderr,
1.2 deraadt 99: "%s: unexpected change to mbstat; check source\n",
1.11 mickey 100: __progname);
1.1 deraadt 101: return;
102: }
1.13 angelos 103:
1.23 marius 104: mib[0] = CTL_KERN;
105: mib[1] = KERN_MBSTAT;
106: size = sizeof(mbstat);
107:
108: if (sysctl(mib, 2, &mbstat, &size, NULL, 0) < 0) {
109: printf("Can't retrieve mbuf statistics from the kernel: %s\n",
110: strerror(errno));
111: return;
112: }
113:
114: mib[0] = CTL_KERN;
115: mib[1] = KERN_POOL;
116: mib[2] = KERN_POOL_NPOOLS;
117: size = sizeof(npools);
118:
119: if (sysctl(mib, 3, &npools, &size, NULL, 0) < 0) {
120: printf("Can't figure out number of pools in kernel: %s\n",
121: strerror(errno));
122: return;
123: }
1.13 angelos 124:
1.23 marius 125: for (i = 1; npools; i++) {
126: char name[32];
1.13 angelos 127:
1.16 angelos 128: mib[0] = CTL_KERN;
1.23 marius 129: mib[1] = KERN_POOL;
130: mib[2] = KERN_POOL_POOL;
131: mib[3] = i;
1.32 dlg 132: size = sizeof(pool);
1.23 marius 133: if (sysctl(mib, 4, &pool, &size, NULL, 0) < 0) {
134: if (errno == ENOENT)
135: continue;
136: printf("error getting pool: %s\n",
1.16 angelos 137: strerror(errno));
138: return;
139: }
1.23 marius 140: npools--;
141: mib[2] = KERN_POOL_NAME;
142: size = sizeof(name);
143: if (sysctl(mib, 4, &name, &size, NULL, 0) < 0) {
144: printf("error getting pool name: %s\n",
1.13 angelos 145: strerror(errno));
146: return;
147: }
148:
1.33 dlg 149: if (!strncmp(name, "mbufpl", strlen("mbufpl")))
1.32 dlg 150: bcopy(&pool, &mbpool, sizeof(pool));
1.30 deraadt 151: else if (mclp < sizeof(mclpools) / sizeof(mclpools[0]) &&
1.27 deraadt 152: !strncmp(name, *mclnamep, strlen(*mclnamep))) {
153: bcopy(&pool, &mclpools[mclp++],
1.32 dlg 154: sizeof(pool));
1.27 deraadt 155: mclnamep++;
1.23 marius 156: }
1.1 deraadt 157: }
1.8 provos 158:
1.1 deraadt 159: totmbufs = 0;
160: for (mp = mbtypes; mp->mt_name; mp++)
1.29 claudio 161: totmbufs += (unsigned int)mbstat.m_mtypes[mp->mt_type];
162: printf("%lu mbuf%s in use:\n", totmbufs, plural(totmbufs));
1.1 deraadt 163: for (mp = mbtypes; mp->mt_name; mp++)
164: if (mbstat.m_mtypes[mp->mt_type]) {
165: seen[mp->mt_type] = YES;
1.6 denny 166: printf("\t%u mbuf%s allocated to %s\n",
167: mbstat.m_mtypes[mp->mt_type],
1.29 claudio 168: plural(mbstat.m_mtypes[mp->mt_type]),
1.6 denny 169: mp->mt_name);
1.1 deraadt 170: }
171: seen[MT_FREE] = YES;
172: for (i = 0; i < nmbtypes; i++)
173: if (!seen[i] && mbstat.m_mtypes[i]) {
1.6 denny 174: printf("\t%u mbuf%s allocated to <mbuf type %d>\n",
175: mbstat.m_mtypes[i],
1.29 claudio 176: plural(mbstat.m_mtypes[i]), i);
1.1 deraadt 177: }
1.36 mpi 178: totmem = (mbpool.pr_npages * mbpool.pr_pgsize);
1.27 deraadt 179: totused = mbpool.pr_nout * mbpool.pr_size;
180: for (i = 0; i < mclp; i++) {
1.36 mpi 181: printf("%u/%lu/%lu mbuf %d byte clusters in use"
182: " (current/peak/max)\n",
1.29 claudio 183: mclpools[i].pr_nout,
1.36 mpi 184: (unsigned long)
185: (mclpools[i].pr_hiwat * mclpools[i].pr_itemsperpage),
186: (unsigned long)
187: (mclpools[i].pr_maxpages * mclpools[i].pr_itemsperpage),
1.27 deraadt 188: mclpools[i].pr_size);
1.36 mpi 189: totmem += (mclpools[i].pr_npages * mclpools[i].pr_pgsize);
1.27 deraadt 190: totused += mclpools[i].pr_nout * mclpools[i].pr_size;
191: }
192:
1.36 mpi 193: totpct = (totmem == 0) ? 0 : (totused/(totmem / 100));
1.29 claudio 194: printf("%lu Kbytes allocated to network (%d%% in use)\n",
1.8 provos 195: totmem / 1024, totpct);
1.4 millert 196: printf("%lu requests for memory denied\n", mbstat.m_drops);
197: printf("%lu requests for memory delayed\n", mbstat.m_wait);
198: printf("%lu calls to protocol drain routines\n", mbstat.m_drain);
1.1 deraadt 199: }
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