mbuf.c revision 63203
1/* 2 * Copyright (c) 1983, 1988, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. All advertising materials mentioning features or use of this software 14 * must display the following acknowledgement: 15 * This product includes software developed by the University of 16 * California, Berkeley and its contributors. 17 * 4. Neither the name of the University nor the names of its contributors 18 * may be used to endorse or promote products derived from this software 19 * without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 */ 33 34#ifndef lint 35#if 0 36static char sccsid[] = "@(#)mbuf.c 8.1 (Berkeley) 6/6/93"; 37#endif 38static const char rcsid[] = 39 "$FreeBSD: head/usr.bin/netstat/mbuf.c 63203 2000-07-15 06:02:48Z alfred $"; 40#endif /* not lint */ 41 42#include <sys/param.h> 43#include <sys/mbuf.h> 44#include <sys/protosw.h> 45#include <sys/socket.h> 46#include <sys/sysctl.h> 47 48#include <err.h> 49#include <stdio.h> 50#include <stdlib.h> 51#include "netstat.h" 52 53#define YES 1 54typedef int bool; 55 56struct mbstat mbstat; 57 58static struct mbtypenames { 59 int mt_type; 60 char *mt_name; 61} mbtypenames[] = { 62 { MT_DATA, "data" }, 63 { MT_OOBDATA, "oob data" }, 64 { MT_CONTROL, "ancillary data" }, 65 { MT_HEADER, "packet headers" }, 66#ifdef MT_SOCKET 67 { MT_SOCKET, "socket structures" }, /* XXX */ 68#endif 69#ifdef MT_PCB 70 { MT_PCB, "protocol control blocks" }, /* XXX */ 71#endif 72#ifdef MT_RTABLE 73 { MT_RTABLE, "routing table entries" }, /* XXX */ 74#endif 75#ifdef MT_HTABLE 76 { MT_HTABLE, "IMP host table entries" }, /* XXX */ 77#endif 78#ifdef MT_ATABLE 79 { MT_ATABLE, "address resolution tables" }, 80#endif 81 { MT_FTABLE, "fragment reassembly queue headers" }, /* XXX */ 82 { MT_SONAME, "socket names and addresses" }, 83#ifdef MT_SOOPTS 84 { MT_SOOPTS, "socket options" }, 85#endif 86#ifdef MT_RIGHTS 87 { MT_RIGHTS, "access rights" }, 88#endif 89#ifdef MT_IFADDR 90 { MT_IFADDR, "interface addresses" }, /* XXX */ 91#endif 92 { 0, 0 } 93}; 94 95/* 96 * Print mbuf statistics. 97 */ 98void 99mbpr() 100{ 101 register int totmem, totfree, totmbufs; 102 register int i; 103 struct mbtypenames *mp; 104 int name[3], nmbclusters, nmbufs, nmbtypes; 105 size_t nmbclen, nmbuflen, mbstatlen, mbtypeslen; 106 u_long *mbtypes; 107 bool *seen; /* "have we seen this type yet?" */ 108 109 mbtypes = NULL; 110 seen = NULL; 111 112 name[0] = CTL_KERN; 113 name[1] = KERN_IPC; 114 name[2] = KIPC_MBSTAT; 115 mbstatlen = sizeof mbstat; 116 if (sysctl(name, 3, &mbstat, &mbstatlen, 0, 0) < 0) { 117 warn("sysctl: retrieving mbstat"); 118 goto err; 119 } 120 121 if (sysctlbyname("kern.ipc.mbtypes", NULL, &mbtypeslen, NULL, 0) < 0) { 122 warn("sysctl: retrieving mbtypes length"); 123 goto err; 124 } 125 if ((mbtypes = malloc(mbtypeslen)) == NULL) { 126 warn("malloc: %lu bytes for mbtypes", (u_long)mbtypeslen); 127 goto err; 128 } 129 if (sysctlbyname("kern.ipc.mbtypes", mbtypes, &mbtypeslen, NULL, 130 0) < 0) { 131 warn("sysctl: retrieving mbtypes"); 132 goto err; 133 } 134 135 nmbtypes = mbtypeslen / sizeof(*mbtypes); 136 if ((seen = calloc(nmbtypes, sizeof(*seen))) == NULL) { 137 warn("calloc"); 138 goto err; 139 } 140 141 name[2] = KIPC_NMBCLUSTERS; 142 nmbclen = sizeof(int); 143 if (sysctl(name, 3, &nmbclusters, &nmbclen, 0, 0) < 0) { 144 warn("sysctl: retrieving nmbclusters"); 145 goto err; 146 } 147 148 nmbuflen = sizeof(int); 149 if (sysctlbyname("kern.ipc.nmbufs", &nmbufs, &nmbuflen, 0, 0) < 0) { 150 warn("sysctl: retrieving nmbufs"); 151 goto err; 152 } 153 154#undef MSIZE 155#define MSIZE (mbstat.m_msize) 156#undef MCLBYTES 157#define MCLBYTES (mbstat.m_mclbytes) 158 159 totmbufs = 0; 160 for (mp = mbtypenames; mp->mt_name; mp++) 161 totmbufs += mbtypes[mp->mt_type]; 162 printf("%u/%lu/%u mbufs in use (current/peak/max):\n", totmbufs, 163 mbstat.m_mbufs, nmbufs); 164 for (mp = mbtypenames; mp->mt_name; mp++) 165 if (mbtypes[mp->mt_type]) { 166 seen[mp->mt_type] = YES; 167 printf("\t%lu mbufs allocated to %s\n", 168 mbtypes[mp->mt_type], mp->mt_name); 169 } 170 seen[MT_FREE] = YES; 171 for (i = 0; i < nmbtypes; i++) 172 if (!seen[i] && mbtypes[i]) { 173 printf("\t%lu mbufs allocated to <mbuf type %d>\n", 174 mbtypes[i], i); 175 } 176 printf("%lu/%lu/%u mbuf clusters in use (current/peak/max)\n", 177 mbstat.m_clusters - mbstat.m_clfree, mbstat.m_clusters, 178 nmbclusters); 179 totmem = mbstat.m_mbufs * MSIZE + mbstat.m_clusters * MCLBYTES; 180 totfree = mbstat.m_clfree * MCLBYTES + 181 MSIZE * (mbstat.m_mbufs - totmbufs); 182 printf("%u Kbytes allocated to network (%d%% in use)\n", 183 totmem / 1024, (unsigned) (totmem - totfree) * 100 / totmem); 184 printf("%lu requests for memory denied\n", mbstat.m_drops); 185 printf("%lu requests for memory delayed\n", mbstat.m_wait); 186 printf("%lu calls to protocol drain routines\n", mbstat.m_drain); 187 188err: 189 if (mbtypes != NULL) 190 free(mbtypes); 191 if (seen != NULL) 192 free(seen); 193} 194