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. Neither the name of the University nor the names of its contributors 14 * may be used to endorse or promote products derived from this software 15 * without specific prior written permission. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 * 29 * @(#)mbuf.c 8.1 (Berkeley) 6/6/93 30 * $FreeBSD: src/usr.bin/netstat/mbuf.c,v 1.17.2.3 2001/08/10 09:07:09 ru Exp $ 31 */ 32 33 #define _KERNEL_STRUCTURES 34 #include <sys/param.h> 35 #include <sys/mbuf.h> 36 #include <sys/protosw.h> 37 #include <sys/socket.h> 38 #include <sys/sysctl.h> 39 40 #include <err.h> 41 #include <stdbool.h> 42 #include <stdio.h> 43 #include <stdlib.h> 44 #include "netstat.h" 45 46 #define YES true 47 48 static struct mbtypenames { 49 int mt_type; 50 const char *mt_name; 51 } mbtypenames[] = { 52 { MT_DATA, "data" }, 53 { MT_OOBDATA, "oob data" }, 54 { MT_CONTROL, "ancillary data" }, 55 { MT_HEADER, "packet headers" }, 56 { MT_SONAME, "socket names and addresses" }, 57 { 0, 0 } 58 }; 59 60 /* 61 * Print mbuf statistics. 62 */ 63 void 64 mbpr(u_long mbaddr, u_long mbtaddr, u_long nmbcaddr, u_long nmbjcaddr, 65 u_long nmbufaddr, u_long ncpusaddr) 66 { 67 u_long totmem, totpossible; 68 struct mbstat *mbstat; 69 struct mbtypenames *mp; 70 int name[3], nmbclusters, nmbjclusters, nmbufs, nmbtypes; 71 size_t nmbclen, nmbjclen, nmbuflen, mbstatlen, mbtypeslen; 72 u_long *mbtypes; 73 int ncpus; 74 int n; 75 int i; 76 bool *seen; /* "have we seen this type yet?" */ 77 78 mbtypes = NULL; 79 seen = NULL; 80 mbstat = NULL; 81 82 /* 83 * XXX 84 * We can't kread() mbtypeslen from a core image so we'll 85 * bogusly assume it's the same as in the running kernel. 86 */ 87 if (sysctlbyname("kern.ipc.mbtypes", NULL, &mbtypeslen, NULL, 0) < 0) { 88 warn("sysctl: retrieving mbtypes length"); 89 goto err; 90 } 91 nmbtypes = mbtypeslen / sizeof(*mbtypes); 92 if ((seen = calloc(nmbtypes, sizeof(*seen))) == NULL) { 93 warn("calloc"); 94 goto err; 95 } 96 97 if (mbaddr) { 98 if (kread(ncpusaddr, (char *)&ncpus, sizeof ncpus)) 99 goto err; 100 mbstat = calloc(ncpus, sizeof(*mbstat)); 101 if (kread(mbaddr, (char *)mbstat, sizeof *mbstat * ncpus)) 102 goto err; 103 mbtypes = calloc(ncpus, mbtypeslen); 104 if (kread(mbtaddr, (char *)mbtypes, mbtypeslen * ncpus)) 105 goto err; 106 if (kread(nmbcaddr, (char *)&nmbclusters, sizeof(int))) 107 goto err; 108 if (kread(nmbjcaddr, (char *)&nmbjclusters, sizeof(int))) 109 goto err; 110 if (kread(nmbufaddr, (char *)&nmbufs, sizeof(int))) 111 goto err; 112 for (n = 1; n < ncpus; ++n) { 113 mbstat[0].m_mbufs += mbstat[n].m_mbufs; 114 mbstat[0].m_clusters += mbstat[n].m_clusters; 115 mbstat[0].m_drops += mbstat[n].m_drops; 116 mbstat[0].m_wait += mbstat[n].m_wait; 117 mbstat[0].m_drain += mbstat[n].m_drain; 118 119 for (i = 0; i < nmbtypes; ++i) { 120 mbtypes[i] += mbtypes[n * nmbtypes + i]; 121 } 122 } 123 } else { 124 name[0] = CTL_KERN; 125 name[1] = KERN_IPC; 126 name[2] = KIPC_MBSTAT; 127 mbstat = malloc(sizeof(*mbstat)); 128 mbstatlen = sizeof *mbstat; 129 /* fake ncpus, kernel will aggregate mbstat array for us */ 130 if (sysctl(name, 3, mbstat, &mbstatlen, 0, 0) < 0) { 131 warn("sysctl: retrieving mbstat"); 132 goto err; 133 } 134 135 mbtypes = malloc(mbtypeslen); 136 if (sysctlbyname("kern.ipc.mbtypes", mbtypes, &mbtypeslen, NULL, 137 0) < 0) { 138 warn("sysctl: retrieving mbtypes"); 139 goto err; 140 } 141 142 name[2] = KIPC_NMBCLUSTERS; 143 nmbclen = sizeof(int); 144 if (sysctl(name, 3, &nmbclusters, &nmbclen, 0, 0) < 0) { 145 warn("sysctl: retrieving nmbclusters"); 146 goto err; 147 } 148 149 nmbjclen = sizeof(int); 150 if (sysctlbyname("kern.ipc.nmbjclusters", 151 &nmbjclusters, &nmbjclen, 0, 0) < 0) { 152 warn("sysctl: retrieving nmbjclusters"); 153 goto err; 154 } 155 156 nmbuflen = sizeof(int); 157 if (sysctlbyname("kern.ipc.nmbufs", &nmbufs, &nmbuflen, 0, 0) < 0) { 158 warn("sysctl: retrieving nmbufs"); 159 goto err; 160 } 161 } 162 163 #undef MSIZE 164 #define MSIZE (mbstat->m_msize) 165 #undef MCLBYTES 166 #define MCLBYTES (mbstat->m_mclbytes) 167 #undef MJUMPAGESIZE 168 #define MJUMPAGESIZE (mbstat->m_mjumpagesize) 169 170 printf("%lu/%u mbufs in use (current/max):\n", mbstat->m_mbufs, nmbufs); 171 printf("%lu/%u mbuf clusters in use (current/max)\n", 172 mbstat->m_clusters, nmbclusters); 173 printf("%lu/%u mbuf jumbo clusters in use (current/max)\n", 174 mbstat->m_jclusters, nmbjclusters); 175 for (mp = mbtypenames; mp->mt_name; mp++) 176 if (mbtypes[mp->mt_type]) { 177 seen[mp->mt_type] = YES; 178 printf("\t%lu mbufs and mbuf clusters " 179 "allocated to %s\n", 180 mbtypes[mp->mt_type], mp->mt_name); 181 } 182 seen[MT_FREE] = YES; 183 for (i = 0; i < nmbtypes; i++) 184 if (!seen[i] && mbtypes[i]) { 185 printf("\t%lu mbufs and mbuf clusters allocated to <mbuf type %d>\n", 186 mbtypes[i], i); 187 } 188 totmem = mbstat->m_mbufs * MSIZE + mbstat->m_clusters * MCLBYTES + 189 mbstat->m_jclusters * MJUMPAGESIZE; 190 totpossible = MSIZE * nmbufs + nmbclusters * MCLBYTES + 191 nmbjclusters * MJUMPAGESIZE; 192 printf("%lu Kbytes allocated to network (%lu%% of mb_map in use)\n", 193 totmem / 1024, (totmem * 100) / totpossible); 194 printf("%lu requests for memory denied\n", mbstat->m_drops); 195 printf("%lu requests for memory delayed\n", mbstat->m_wait); 196 printf("%lu calls to protocol drain routines\n", mbstat->m_drain); 197 198 err: 199 if (mbstat != NULL) 200 free(mbstat); 201 if (mbtypes != NULL) 202 free(mbtypes); 203 if (seen != NULL) 204 free(seen); 205 } 206