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 * @(#)mbuf.c 8.1 (Berkeley) 6/6/93 34 * $FreeBSD: src/usr.bin/netstat/mbuf.c,v 1.17.2.3 2001/08/10 09:07:09 ru Exp $ 35 * $DragonFly: src/usr.bin/netstat/mbuf.c,v 1.7 2006/10/09 22:30:48 hsu Exp $ 36 */ 37 38 #define _KERNEL_STRUCTURES 39 #include <sys/param.h> 40 #include <sys/mbuf.h> 41 #include <sys/protosw.h> 42 #include <sys/socket.h> 43 #include <sys/sysctl.h> 44 45 #include <err.h> 46 #include <stdio.h> 47 #include <stdlib.h> 48 #include "netstat.h" 49 50 #define YES 1 51 typedef int bool; 52 53 static struct mbtypenames { 54 int mt_type; 55 char *mt_name; 56 } mbtypenames[] = { 57 { MT_DATA, "data" }, 58 { MT_OOBDATA, "oob data" }, 59 { MT_CONTROL, "ancillary data" }, 60 { MT_HEADER, "packet headers" }, 61 { MT_SONAME, "socket names and addresses" }, 62 { 0, 0 } 63 }; 64 65 /* 66 * Print mbuf statistics. 67 */ 68 void 69 mbpr(u_long mbaddr, u_long mbtaddr, u_long nmbcaddr, u_long nmbufaddr) 70 { 71 u_long totmem, totpossible; 72 int i; 73 struct mbstat mbstat; 74 struct mbtypenames *mp; 75 int name[3], nmbclusters, nmbufs, nmbtypes; 76 size_t nmbclen, nmbuflen, mbstatlen, mbtypeslen; 77 u_long *mbtypes; 78 bool *seen; /* "have we seen this type yet?" */ 79 80 mbtypes = NULL; 81 seen = NULL; 82 83 /* 84 * XXX 85 * We can't kread() mbtypeslen from a core image so we'll 86 * bogusly assume it's the same as in the running kernel. 87 */ 88 if (sysctlbyname("kern.ipc.mbtypes", NULL, &mbtypeslen, NULL, 0) < 0) { 89 warn("sysctl: retrieving mbtypes length"); 90 goto err; 91 } 92 if ((mbtypes = malloc(mbtypeslen)) == NULL) { 93 warn("malloc: %lu bytes for mbtypes", (u_long)mbtypeslen); 94 goto err; 95 } 96 97 nmbtypes = mbtypeslen / sizeof(*mbtypes); 98 if ((seen = calloc(nmbtypes, sizeof(*seen))) == NULL) { 99 warn("calloc"); 100 goto err; 101 } 102 103 if (mbaddr) { 104 if (kread(mbaddr, (char *)&mbstat, sizeof mbstat)) 105 goto err; 106 if (kread(mbtaddr, (char *)mbtypes, mbtypeslen)) 107 goto err; 108 if (kread(nmbcaddr, (char *)&nmbclusters, sizeof(int))) 109 goto err; 110 if (kread(nmbufaddr, (char *)&nmbufs, sizeof(int))) 111 goto err; 112 } else { 113 name[0] = CTL_KERN; 114 name[1] = KERN_IPC; 115 name[2] = KIPC_MBSTAT; 116 mbstatlen = sizeof mbstat; 117 if (sysctl(name, 3, &mbstat, &mbstatlen, 0, 0) < 0) { 118 warn("sysctl: retrieving mbstat"); 119 goto err; 120 } 121 122 if (sysctlbyname("kern.ipc.mbtypes", mbtypes, &mbtypeslen, NULL, 123 0) < 0) { 124 warn("sysctl: retrieving mbtypes"); 125 goto err; 126 } 127 128 name[2] = KIPC_NMBCLUSTERS; 129 nmbclen = sizeof(int); 130 if (sysctl(name, 3, &nmbclusters, &nmbclen, 0, 0) < 0) { 131 warn("sysctl: retrieving nmbclusters"); 132 goto err; 133 } 134 135 nmbuflen = sizeof(int); 136 if (sysctlbyname("kern.ipc.nmbufs", &nmbufs, &nmbuflen, 0, 0) < 0) { 137 warn("sysctl: retrieving nmbufs"); 138 goto err; 139 } 140 } 141 142 #undef MSIZE 143 #define MSIZE (mbstat.m_msize) 144 #undef MCLBYTES 145 #define MCLBYTES (mbstat.m_mclbytes) 146 147 printf("%lu/%u mbufs in use (current/max):\n", mbstat.m_mbufs, nmbufs); 148 printf("%lu/%u mbuf clusters in use (current/max)\n", 149 mbstat.m_clusters, nmbclusters); 150 for (mp = mbtypenames; mp->mt_name; mp++) 151 if (mbtypes[mp->mt_type]) { 152 seen[mp->mt_type] = YES; 153 printf("\t%lu mbufs and mbuf clusters allocated to %s\n", 154 mbtypes[mp->mt_type], mp->mt_name); 155 } 156 seen[MT_FREE] = YES; 157 for (i = 0; i < nmbtypes; i++) 158 if (!seen[i] && mbtypes[i]) { 159 printf("\t%lu mbufs and mbuf clusters allocated to <mbuf type %d>\n", 160 mbtypes[i], i); 161 } 162 totmem = mbstat.m_mbufs * MSIZE + mbstat.m_clusters * MCLBYTES; 163 totpossible = nmbclusters * MCLBYTES + MSIZE * nmbufs; 164 printf("%lu Kbytes allocated to network (%lu%% of mb_map in use)\n", 165 totmem / 1024, (totmem * 100) / totpossible); 166 printf("%lu requests for memory denied\n", mbstat.m_drops); 167 printf("%lu requests for memory delayed\n", mbstat.m_wait); 168 printf("%lu calls to protocol drain routines\n", mbstat.m_drain); 169 170 err: 171 if (mbtypes != NULL) 172 free(mbtypes); 173 if (seen != NULL) 174 free(seen); 175 } 176