Annotation of src/usr.bin/netstat/mbuf.c, Revision 1.18
1.18 ! pb 1: /* $OpenBSD: mbuf.c,v 1.17 2003/02/01 01:51:31 deraadt 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
1.18 ! pb 41: static char *rcsid = "$OpenBSD: mbuf.c,v 1.17 2003/02/01 01:51:31 deraadt 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>
1.17 deraadt 57: #include <unistd.h>
1.1 deraadt 58: #include "netstat.h"
59:
60: #define YES 1
61: typedef int bool;
62:
63: struct mbstat mbstat;
1.8 provos 64: struct pool mbpool, mclpool;
65:
1.13 angelos 66: extern kvm_t *kvmd;
1.1 deraadt 67:
68: static struct mbtypes {
69: int mt_type;
70: char *mt_name;
71: } mbtypes[] = {
72: { MT_DATA, "data" },
73: { MT_OOBDATA, "oob data" },
74: { MT_CONTROL, "ancillary data" },
75: { MT_HEADER, "packet headers" },
76: { MT_FTABLE, "fragment reassembly queue headers" }, /* XXX */
77: { MT_SONAME, "socket names and addresses" },
78: { MT_SOOPTS, "socket options" },
79: { 0, 0 }
80: };
81:
82: int nmbtypes = sizeof(mbstat.m_mtypes) / sizeof(short);
83: bool seen[256]; /* "have we seen this type yet?" */
84:
85: /*
86: * Print mbuf statistics.
87: */
88: void
1.17 deraadt 89: mbpr(u_long mbaddr, u_long mbpooladdr, u_long mclpooladdr)
1.1 deraadt 90: {
1.9 mpech 91: int totmem, totused, totmbufs, totpct;
1.13 angelos 92: int i, mib[4], npools, flag = 0;
93: struct pool pool;
1.9 mpech 94: struct mbtypes *mp;
1.13 angelos 95: size_t size;
1.10 art 96: int page_size = getpagesize();
1.1 deraadt 97:
98: if (nmbtypes != 256) {
99: fprintf(stderr,
1.2 deraadt 100: "%s: unexpected change to mbstat; check source\n",
1.11 mickey 101: __progname);
1.1 deraadt 102: return;
103: }
1.13 angelos 104:
105: if (kvmd == NULL) {
106: if (mbaddr == 0) {
107: fprintf(stderr, "%s: mbstat: symbol not in namelist\n",
108: __progname);
109: return;
110: }
111:
112: if (kread(mbaddr, (char *)&mbstat, sizeof (mbstat)))
113: return;
114: if (kread(mbpooladdr, (char *)&mbpool, sizeof (mbpool)))
115: return;
116:
117: if (kread(mclpooladdr, (char *)&mclpool, sizeof (mclpool)))
118: return;
119: } else {
1.16 angelos 120: mib[0] = CTL_KERN;
121: mib[1] = KERN_MBSTAT;
122: size = sizeof(mbstat);
123:
124: if (sysctl(mib, 2, &mbstat, &size, NULL, 0) < 0) {
125: printf("Can't retrieve mbuf statistics from the kernel: %s\n",
126: strerror(errno));
127: return;
128: }
129:
1.13 angelos 130: mib[0] = CTL_KERN;
131: mib[1] = KERN_POOL;
1.15 angelos 132: mib[2] = KERN_POOL_NPOOLS;
1.13 angelos 133: size = sizeof(npools);
134:
135: if (sysctl(mib, 3, &npools, &size, NULL, 0) < 0) {
136: printf("Can't figure out number of pools in kernel: %s\n",
137: strerror(errno));
138: return;
139: }
140:
141: for (i = 1; npools; i++) {
142: char name[32];
143:
144: mib[0] = CTL_KERN;
145: mib[1] = KERN_POOL;
146: mib[2] = KERN_POOL_POOL;
147: mib[3] = i;
148: size = sizeof(struct pool);
149: if (sysctl(mib, 4, &pool, &size, NULL, 0) < 0) {
150: if (errno == ENOENT)
151: continue;
152: printf("error getting pool: %s\n",
153: strerror(errno));
154: return;
155: }
156: npools--;
157: mib[2] = KERN_POOL_NAME;
158: size = sizeof(name);
159: if (sysctl(mib, 4, &name, &size, NULL, 0) < 0) {
160: printf("error getting pool name: %s\n",
161: strerror(errno));
162: return;
163: }
164:
165: if (!strncmp(name, "mbpl", strlen("mbpl"))) {
166: bcopy(&pool, &mbpool, sizeof(struct pool));
167: flag++;
168: } else {
169: if (!strncmp(name, "mclpl", strlen("mclpl"))) {
170: bcopy(&pool, &mclpool,
171: sizeof(struct pool));
172: flag++;
173: }
174: }
175:
176: if (flag == 2)
177: break;
178: }
1.1 deraadt 179: }
1.8 provos 180:
1.1 deraadt 181: totmbufs = 0;
182: for (mp = mbtypes; mp->mt_name; mp++)
183: totmbufs += mbstat.m_mtypes[mp->mt_type];
1.6 denny 184: printf("%u mbuf%s in use:\n", totmbufs, plural(totmbufs));
1.1 deraadt 185: for (mp = mbtypes; mp->mt_name; mp++)
186: if (mbstat.m_mtypes[mp->mt_type]) {
187: seen[mp->mt_type] = YES;
1.6 denny 188: printf("\t%u mbuf%s allocated to %s\n",
189: mbstat.m_mtypes[mp->mt_type],
190: plural((int)mbstat.m_mtypes[mp->mt_type]),
191: mp->mt_name);
1.1 deraadt 192: }
193: seen[MT_FREE] = YES;
194: for (i = 0; i < nmbtypes; i++)
195: if (!seen[i] && mbstat.m_mtypes[i]) {
1.6 denny 196: printf("\t%u mbuf%s allocated to <mbuf type %d>\n",
197: mbstat.m_mtypes[i],
198: plural((int)mbstat.m_mtypes[i]), i);
1.1 deraadt 199: }
1.18 ! pb 200: printf("%lu/%lu/%lu mbuf cluster pages in use (current/peak/max)\n",
1.11 mickey 201: (u_long)(mclpool.pr_nget - mclpool.pr_nput),
1.18 ! pb 202: (u_long)mclpool.pr_hiwat, (u_long)mclpool.pr_maxpages);
1.10 art 203: totmem = (mbpool.pr_npages * page_size) +
204: (mclpool.pr_npages * page_size);
1.11 mickey 205: totused = (mbpool.pr_nget - mbpool.pr_nput) * mbpool.pr_size +
1.8 provos 206: (mclpool.pr_nget - mclpool.pr_nput) * mclpool.pr_size;
207: totpct = (totmem == 0)? 0 : ((totused * 100)/totmem);
1.1 deraadt 208: printf("%u Kbytes allocated to network (%d%% in use)\n",
1.8 provos 209: totmem / 1024, totpct);
1.4 millert 210: printf("%lu requests for memory denied\n", mbstat.m_drops);
211: printf("%lu requests for memory delayed\n", mbstat.m_wait);
212: printf("%lu calls to protocol drain routines\n", mbstat.m_drain);
1.1 deraadt 213: }