Annotation of src/usr.bin/netstat/mbuf.c, Revision 1.38
1.38 ! dlg 1: /* $OpenBSD: mbuf.c,v 1.37 2016/04/04 16:26:00 sthen 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>
1.1 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[] = {
1.38 ! dlg 55: "mcl2k",
! 56: "mcl2k2",
! 57: "mcl4k",
! 58: "mcl8k",
! 59: "mcl9k",
! 60: "mcl12k",
! 61: "mcl16k",
! 62: "mcl64k"
1.27 deraadt 63: };
64: char **mclnamep = mclnames;
1.1 deraadt 65:
66: static struct mbtypes {
67: int mt_type;
68: char *mt_name;
69: } mbtypes[] = {
70: { MT_DATA, "data" },
71: { MT_OOBDATA, "oob data" },
72: { MT_CONTROL, "ancillary data" },
73: { MT_HEADER, "packet headers" },
74: { MT_FTABLE, "fragment reassembly queue headers" }, /* XXX */
75: { MT_SONAME, "socket names and addresses" },
76: { MT_SOOPTS, "socket options" },
77: { 0, 0 }
78: };
79:
80: int nmbtypes = sizeof(mbstat.m_mtypes) / sizeof(short);
81: bool seen[256]; /* "have we seen this type yet?" */
82:
83: /*
84: * Print mbuf statistics.
85: */
86: void
1.25 deraadt 87: mbpr(void)
1.1 deraadt 88: {
1.29 claudio 89: unsigned long totmem, totused, totmbufs;
90: int totpct;
1.27 deraadt 91: int i, 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;
104: mib[1] = KERN_MBSTAT;
105: size = sizeof(mbstat);
106:
107: if (sysctl(mib, 2, &mbstat, &size, NULL, 0) < 0) {
108: printf("Can't retrieve mbuf statistics from the kernel: %s\n",
109: strerror(errno));
110: return;
111: }
112:
113: mib[0] = CTL_KERN;
114: mib[1] = KERN_POOL;
115: mib[2] = KERN_POOL_NPOOLS;
116: size = sizeof(npools);
117:
118: if (sysctl(mib, 3, &npools, &size, NULL, 0) < 0) {
119: printf("Can't figure out number of pools in kernel: %s\n",
120: strerror(errno));
121: return;
122: }
1.13 angelos 123:
1.23 marius 124: for (i = 1; npools; i++) {
125: char name[32];
1.13 angelos 126:
1.16 angelos 127: mib[0] = CTL_KERN;
1.23 marius 128: mib[1] = KERN_POOL;
129: mib[2] = KERN_POOL_POOL;
130: mib[3] = i;
1.32 dlg 131: size = sizeof(pool);
1.23 marius 132: if (sysctl(mib, 4, &pool, &size, NULL, 0) < 0) {
133: if (errno == ENOENT)
134: continue;
135: printf("error getting pool: %s\n",
1.16 angelos 136: strerror(errno));
137: return;
138: }
1.23 marius 139: npools--;
140: mib[2] = KERN_POOL_NAME;
141: size = sizeof(name);
142: if (sysctl(mib, 4, &name, &size, NULL, 0) < 0) {
143: printf("error getting pool name: %s\n",
1.13 angelos 144: strerror(errno));
145: return;
146: }
147:
1.33 dlg 148: if (!strncmp(name, "mbufpl", strlen("mbufpl")))
1.32 dlg 149: bcopy(&pool, &mbpool, sizeof(pool));
1.30 deraadt 150: else if (mclp < sizeof(mclpools) / sizeof(mclpools[0]) &&
1.27 deraadt 151: !strncmp(name, *mclnamep, strlen(*mclnamep))) {
152: bcopy(&pool, &mclpools[mclp++],
1.32 dlg 153: sizeof(pool));
1.27 deraadt 154: mclnamep++;
1.23 marius 155: }
1.1 deraadt 156: }
1.8 provos 157:
1.1 deraadt 158: totmbufs = 0;
159: for (mp = mbtypes; mp->mt_name; mp++)
1.29 claudio 160: totmbufs += (unsigned int)mbstat.m_mtypes[mp->mt_type];
161: printf("%lu mbuf%s in use:\n", totmbufs, plural(totmbufs));
1.1 deraadt 162: for (mp = mbtypes; mp->mt_name; mp++)
163: if (mbstat.m_mtypes[mp->mt_type]) {
164: seen[mp->mt_type] = YES;
1.6 denny 165: printf("\t%u mbuf%s allocated to %s\n",
166: mbstat.m_mtypes[mp->mt_type],
1.29 claudio 167: plural(mbstat.m_mtypes[mp->mt_type]),
1.6 denny 168: mp->mt_name);
1.1 deraadt 169: }
170: seen[MT_FREE] = YES;
171: for (i = 0; i < nmbtypes; i++)
172: if (!seen[i] && mbstat.m_mtypes[i]) {
1.6 denny 173: printf("\t%u mbuf%s allocated to <mbuf type %d>\n",
174: mbstat.m_mtypes[i],
1.29 claudio 175: plural(mbstat.m_mtypes[i]), i);
1.1 deraadt 176: }
1.36 mpi 177: totmem = (mbpool.pr_npages * mbpool.pr_pgsize);
1.27 deraadt 178: totused = mbpool.pr_nout * mbpool.pr_size;
179: for (i = 0; i < mclp; i++) {
1.36 mpi 180: printf("%u/%lu/%lu mbuf %d byte clusters in use"
181: " (current/peak/max)\n",
1.29 claudio 182: mclpools[i].pr_nout,
1.36 mpi 183: (unsigned long)
184: (mclpools[i].pr_hiwat * mclpools[i].pr_itemsperpage),
185: (unsigned long)
186: (mclpools[i].pr_maxpages * mclpools[i].pr_itemsperpage),
1.27 deraadt 187: mclpools[i].pr_size);
1.36 mpi 188: totmem += (mclpools[i].pr_npages * mclpools[i].pr_pgsize);
1.27 deraadt 189: totused += mclpools[i].pr_nout * mclpools[i].pr_size;
190: }
191:
1.36 mpi 192: totpct = (totmem == 0) ? 0 : (totused/(totmem / 100));
1.29 claudio 193: printf("%lu Kbytes allocated to network (%d%% in use)\n",
1.8 provos 194: totmem / 1024, totpct);
1.4 millert 195: printf("%lu requests for memory denied\n", mbstat.m_drops);
196: printf("%lu requests for memory delayed\n", mbstat.m_wait);
197: printf("%lu calls to protocol drain routines\n", mbstat.m_drain);
1.1 deraadt 198: }