Annotation of src/usr.bin/netstat/mbuf.c, Revision 1.40
1.40 ! mikeb 1: /* $OpenBSD: mbuf.c,v 1.39 2017/02/04 13:17:08 jsg 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: {
1.40 ! mikeb 90: unsigned long totmem, totpeak, totmbufs;
! 91: int i, maxclusters, mib[4], npools;
1.32 dlg 92: struct kinfo_pool pool;
1.9 mpech 93: struct mbtypes *mp;
1.13 angelos 94: size_t size;
1.1 deraadt 95:
96: if (nmbtypes != 256) {
97: fprintf(stderr,
1.2 deraadt 98: "%s: unexpected change to mbstat; check source\n",
1.11 mickey 99: __progname);
1.1 deraadt 100: return;
101: }
1.13 angelos 102:
1.23 marius 103: mib[0] = CTL_KERN;
1.40 ! mikeb 104: mib[1] = KERN_MAXCLUSTERS;
! 105: size = sizeof(maxclusters);
! 106:
! 107: if (sysctl(mib, 2, &maxclusters, &size, NULL, 0) < 0) {
! 108: printf("Can't retrieve value of maxclusters from the "
! 109: "kernel: %s\n", strerror(errno));
! 110: return;
! 111: }
! 112:
! 113: mib[0] = CTL_KERN;
1.23 marius 114: mib[1] = KERN_MBSTAT;
115: size = sizeof(mbstat);
116:
117: if (sysctl(mib, 2, &mbstat, &size, NULL, 0) < 0) {
118: printf("Can't retrieve mbuf statistics from the kernel: %s\n",
119: strerror(errno));
120: return;
121: }
122:
123: mib[0] = CTL_KERN;
124: mib[1] = KERN_POOL;
125: mib[2] = KERN_POOL_NPOOLS;
126: size = sizeof(npools);
127:
128: if (sysctl(mib, 3, &npools, &size, NULL, 0) < 0) {
129: printf("Can't figure out number of pools in kernel: %s\n",
130: strerror(errno));
131: return;
132: }
1.13 angelos 133:
1.23 marius 134: for (i = 1; npools; i++) {
135: char name[32];
1.13 angelos 136:
1.16 angelos 137: mib[0] = CTL_KERN;
1.23 marius 138: mib[1] = KERN_POOL;
139: mib[2] = KERN_POOL_POOL;
140: mib[3] = i;
1.32 dlg 141: size = sizeof(pool);
1.23 marius 142: if (sysctl(mib, 4, &pool, &size, NULL, 0) < 0) {
143: if (errno == ENOENT)
144: continue;
145: printf("error getting pool: %s\n",
1.16 angelos 146: strerror(errno));
147: return;
148: }
1.23 marius 149: npools--;
150: mib[2] = KERN_POOL_NAME;
151: size = sizeof(name);
152: if (sysctl(mib, 4, &name, &size, NULL, 0) < 0) {
153: printf("error getting pool name: %s\n",
1.13 angelos 154: strerror(errno));
155: return;
156: }
157:
1.33 dlg 158: if (!strncmp(name, "mbufpl", strlen("mbufpl")))
1.32 dlg 159: bcopy(&pool, &mbpool, sizeof(pool));
1.30 deraadt 160: else if (mclp < sizeof(mclpools) / sizeof(mclpools[0]) &&
1.27 deraadt 161: !strncmp(name, *mclnamep, strlen(*mclnamep))) {
162: bcopy(&pool, &mclpools[mclp++],
1.32 dlg 163: sizeof(pool));
1.27 deraadt 164: mclnamep++;
1.23 marius 165: }
1.1 deraadt 166: }
1.8 provos 167:
1.1 deraadt 168: totmbufs = 0;
169: for (mp = mbtypes; mp->mt_name; mp++)
1.29 claudio 170: totmbufs += (unsigned int)mbstat.m_mtypes[mp->mt_type];
171: printf("%lu mbuf%s in use:\n", totmbufs, plural(totmbufs));
1.1 deraadt 172: for (mp = mbtypes; mp->mt_name; mp++)
173: if (mbstat.m_mtypes[mp->mt_type]) {
174: seen[mp->mt_type] = YES;
1.6 denny 175: printf("\t%u mbuf%s allocated to %s\n",
176: mbstat.m_mtypes[mp->mt_type],
1.29 claudio 177: plural(mbstat.m_mtypes[mp->mt_type]),
1.6 denny 178: mp->mt_name);
1.1 deraadt 179: }
180: seen[MT_FREE] = YES;
181: for (i = 0; i < nmbtypes; i++)
182: if (!seen[i] && mbstat.m_mtypes[i]) {
1.6 denny 183: printf("\t%u mbuf%s allocated to <mbuf type %d>\n",
184: mbstat.m_mtypes[i],
1.29 claudio 185: plural(mbstat.m_mtypes[i]), i);
1.1 deraadt 186: }
1.36 mpi 187: totmem = (mbpool.pr_npages * mbpool.pr_pgsize);
1.40 ! mikeb 188: totpeak = mbpool.pr_hiwat * mbpool.pr_pgsize;
1.27 deraadt 189: for (i = 0; i < mclp; i++) {
1.40 ! mikeb 190: printf("%u/%lu mbuf %d byte clusters in use"
! 191: " (current/peak)\n",
1.29 claudio 192: mclpools[i].pr_nout,
1.36 mpi 193: (unsigned long)
194: (mclpools[i].pr_hiwat * mclpools[i].pr_itemsperpage),
1.27 deraadt 195: mclpools[i].pr_size);
1.36 mpi 196: totmem += (mclpools[i].pr_npages * mclpools[i].pr_pgsize);
1.40 ! mikeb 197: totpeak += mclpools[i].pr_hiwat * mclpools[i].pr_pgsize;
1.27 deraadt 198: }
199:
1.40 ! mikeb 200: printf("%lu/%lu/%lu Kbytes allocated to network "
! 201: "(current/peak/max)\n", totmem / 1024, totpeak / 1024,
! 202: (unsigned long)(maxclusters * MCLBYTES) / 1024);
1.4 millert 203: printf("%lu requests for memory denied\n", mbstat.m_drops);
204: printf("%lu requests for memory delayed\n", mbstat.m_wait);
205: printf("%lu calls to protocol drain routines\n", mbstat.m_drain);
1.1 deraadt 206: }
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