Annotation of src/usr.bin/netstat/mbuf.c, Revision 1.16
1.16 ! angelos 1: /* $OpenBSD: mbuf.c,v 1.15 2002/06/24 17:51:05 angelos 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.
16: * 3. All advertising materials mentioning features or use of this software
17: * must display the following acknowledgement:
18: * This product includes software developed by the University of
19: * California, Berkeley and its contributors.
20: * 4. Neither the name of the University nor the names of its contributors
21: * may be used to endorse or promote products derived from this software
22: * without specific prior written permission.
23: *
24: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
25: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
27: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
28: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
29: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
30: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
31: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
32: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
33: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34: * SUCH DAMAGE.
35: */
36:
37: #ifndef lint
38: #if 0
39: static char sccsid[] = "from: @(#)mbuf.c 8.1 (Berkeley) 6/6/93";
40: #else
1.16 ! angelos 41: static char *rcsid = "$OpenBSD: mbuf.c,v 1.15 2002/06/24 17:51:05 angelos Exp $";
1.1 deraadt 42: #endif
43: #endif /* not lint */
1.8 provos 44:
1.1 deraadt 45: #include <sys/param.h>
46: #include <sys/protosw.h>
47: #include <sys/socket.h>
48: #include <sys/mbuf.h>
1.8 provos 49: #include <sys/pool.h>
1.13 angelos 50: #include <sys/sysctl.h>
51: #include <sys/errno.h>
1.1 deraadt 52:
1.13 angelos 53: #include <kvm.h>
1.5 millert 54: #include <limits.h>
1.1 deraadt 55: #include <stdio.h>
1.14 deraadt 56: #include <string.h>
1.1 deraadt 57: #include "netstat.h"
58:
59: #define YES 1
60: typedef int bool;
61:
62: struct mbstat mbstat;
1.8 provos 63: struct pool mbpool, mclpool;
64:
1.13 angelos 65: extern kvm_t *kvmd;
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
1.8 provos 88: mbpr(mbaddr, mbpooladdr, mclpooladdr)
1.1 deraadt 89: u_long mbaddr;
1.8 provos 90: u_long mbpooladdr, mclpooladdr;
1.1 deraadt 91: {
1.9 mpech 92: int totmem, totused, totmbufs, totpct;
1.13 angelos 93: int i, mib[4], npools, flag = 0;
94: struct pool pool;
1.9 mpech 95: struct mbtypes *mp;
1.13 angelos 96: size_t size;
1.10 art 97: int page_size = getpagesize();
1.1 deraadt 98:
99: if (nmbtypes != 256) {
100: fprintf(stderr,
1.2 deraadt 101: "%s: unexpected change to mbstat; check source\n",
1.11 mickey 102: __progname);
1.1 deraadt 103: return;
104: }
1.13 angelos 105:
106: if (kvmd == NULL) {
107: if (mbaddr == 0) {
108: fprintf(stderr, "%s: mbstat: symbol not in namelist\n",
109: __progname);
110: return;
111: }
112:
113: if (kread(mbaddr, (char *)&mbstat, sizeof (mbstat)))
114: return;
115: if (kread(mbpooladdr, (char *)&mbpool, sizeof (mbpool)))
116: return;
117:
118: if (kread(mclpooladdr, (char *)&mclpool, sizeof (mclpool)))
119: return;
120: } else {
1.16 ! angelos 121: mib[0] = CTL_KERN;
! 122: mib[1] = KERN_MBSTAT;
! 123: size = sizeof(mbstat);
! 124:
! 125: if (sysctl(mib, 2, &mbstat, &size, NULL, 0) < 0) {
! 126: printf("Can't retrieve mbuf statistics from the kernel: %s\n",
! 127: strerror(errno));
! 128: return;
! 129: }
! 130:
1.13 angelos 131: mib[0] = CTL_KERN;
132: mib[1] = KERN_POOL;
1.15 angelos 133: mib[2] = KERN_POOL_NPOOLS;
1.13 angelos 134: size = sizeof(npools);
135:
136: if (sysctl(mib, 3, &npools, &size, NULL, 0) < 0) {
137: printf("Can't figure out number of pools in kernel: %s\n",
138: strerror(errno));
139: return;
140: }
141:
142: for (i = 1; npools; i++) {
143: char name[32];
144:
145: mib[0] = CTL_KERN;
146: mib[1] = KERN_POOL;
147: mib[2] = KERN_POOL_POOL;
148: mib[3] = i;
149: size = sizeof(struct pool);
150: if (sysctl(mib, 4, &pool, &size, NULL, 0) < 0) {
151: if (errno == ENOENT)
152: continue;
153: printf("error getting pool: %s\n",
154: strerror(errno));
155: return;
156: }
157: npools--;
158: mib[2] = KERN_POOL_NAME;
159: size = sizeof(name);
160: if (sysctl(mib, 4, &name, &size, NULL, 0) < 0) {
161: printf("error getting pool name: %s\n",
162: strerror(errno));
163: return;
164: }
165:
166: if (!strncmp(name, "mbpl", strlen("mbpl"))) {
167: bcopy(&pool, &mbpool, sizeof(struct pool));
168: flag++;
169: } else {
170: if (!strncmp(name, "mclpl", strlen("mclpl"))) {
171: bcopy(&pool, &mclpool,
172: sizeof(struct pool));
173: flag++;
174: }
175: }
176:
177: if (flag == 2)
178: break;
179: }
1.1 deraadt 180: }
1.8 provos 181:
1.1 deraadt 182: totmbufs = 0;
183: for (mp = mbtypes; mp->mt_name; mp++)
184: totmbufs += mbstat.m_mtypes[mp->mt_type];
1.6 denny 185: printf("%u mbuf%s in use:\n", totmbufs, plural(totmbufs));
1.1 deraadt 186: for (mp = mbtypes; mp->mt_name; mp++)
187: if (mbstat.m_mtypes[mp->mt_type]) {
188: seen[mp->mt_type] = YES;
1.6 denny 189: printf("\t%u mbuf%s allocated to %s\n",
190: mbstat.m_mtypes[mp->mt_type],
191: plural((int)mbstat.m_mtypes[mp->mt_type]),
192: mp->mt_name);
1.1 deraadt 193: }
194: seen[MT_FREE] = YES;
195: for (i = 0; i < nmbtypes; i++)
196: if (!seen[i] && mbstat.m_mtypes[i]) {
1.6 denny 197: printf("\t%u mbuf%s allocated to <mbuf type %d>\n",
198: mbstat.m_mtypes[i],
199: plural((int)mbstat.m_mtypes[i]), i);
1.1 deraadt 200: }
1.4 millert 201: printf("%lu/%lu mapped pages in use\n",
1.11 mickey 202: (u_long)(mclpool.pr_nget - mclpool.pr_nput),
203: ((u_long)mclpool.pr_npages * mclpool.pr_itemsperpage));
1.10 art 204: totmem = (mbpool.pr_npages * page_size) +
205: (mclpool.pr_npages * page_size);
1.11 mickey 206: totused = (mbpool.pr_nget - mbpool.pr_nput) * mbpool.pr_size +
1.8 provos 207: (mclpool.pr_nget - mclpool.pr_nput) * mclpool.pr_size;
208: totpct = (totmem == 0)? 0 : ((totused * 100)/totmem);
1.1 deraadt 209: printf("%u Kbytes allocated to network (%d%% in use)\n",
1.8 provos 210: totmem / 1024, totpct);
1.4 millert 211: printf("%lu requests for memory denied\n", mbstat.m_drops);
212: printf("%lu requests for memory delayed\n", mbstat.m_wait);
213: printf("%lu calls to protocol drain routines\n", mbstat.m_drain);
1.1 deraadt 214: }
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