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 36 static char sccsid[] = "@(#)mbuf.c 8.1 (Berkeley) 6/6/93"; 37 #endif 38 static const char rcsid[] = 39 "$Id: mbuf.c,v 1.13 1998/08/18 13:36:47 jb Exp $"; 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 "netstat.h" 51 52 #define YES 1 53 typedef int bool; 54 55 struct mbstat mbstat; 56 57 static struct mbtypes { 58 int mt_type; 59 char *mt_name; 60 } mbtypes[] = { 61 { MT_DATA, "data" }, 62 { MT_OOBDATA, "oob data" }, 63 { MT_CONTROL, "ancillary data" }, 64 { MT_HEADER, "packet headers" }, 65 #ifdef MT_SOCKET 66 { MT_SOCKET, "socket structures" }, /* XXX */ 67 #endif 68 #ifdef MT_PCB 69 { MT_PCB, "protocol control blocks" }, /* XXX */ 70 #endif 71 { MT_RTABLE, "routing table entries" }, /* XXX */ 72 #ifdef MT_HTABLE 73 { MT_HTABLE, "IMP host table entries" }, /* XXX */ 74 #endif 75 #ifdef MT_ATABLE 76 { MT_ATABLE, "address resolution tables" }, 77 #endif 78 { MT_FTABLE, "fragment reassembly queue headers" }, /* XXX */ 79 { MT_SONAME, "socket names and addresses" }, 80 #ifdef MT_SOOPTS 81 { MT_SOOPTS, "socket options" }, 82 #endif 83 #ifdef MT_RIGHTS 84 { MT_RIGHTS, "access rights" }, 85 #endif 86 #ifdef MT_IFADDR 87 { MT_IFADDR, "interface addresses" }, /* XXX */ 88 #endif 89 { 0, 0 } 90 }; 91 92 int nmbtypes = sizeof(mbstat.m_mtypes) / sizeof(short); 93 bool seen[256]; /* "have we seen this type yet?" */ 94 95 /* 96 * Print mbuf statistics. 97 */ 98 void 99 mbpr() 100 { 101 register int totmem, totfree, totmbufs; 102 register int i; 103 register struct mbtypes *mp; 104 int name[3], nmbclusters; 105 size_t nmbclen, mbstatlen; 106 107 name[0] = CTL_KERN; 108 name[1] = KERN_IPC; 109 name[2] = KIPC_MBSTAT; 110 mbstatlen = sizeof mbstat; 111 if (sysctl(name, 3, &mbstat, &mbstatlen, 0, 0) < 0) { 112 warn("sysctl: retrieving mbstat"); 113 return; 114 } 115 116 name[2] = KIPC_NMBCLUSTERS; 117 nmbclen = sizeof(int); 118 if (sysctl(name, 3, &nmbclusters, &nmbclen, 0, 0) < 0) { 119 warn("sysctl: retrieving nmbclusters"); 120 return; 121 } 122 #undef MSIZE 123 #define MSIZE (mbstat.m_msize) 124 #undef MCLBYTES 125 #define MCLBYTES (mbstat.m_mclbytes) 126 127 if (nmbtypes != 256) { 128 warnx("unexpected change to mbstat; check source"); 129 return; 130 } 131 132 totmbufs = 0; 133 for (mp = mbtypes; mp->mt_name; mp++) 134 totmbufs += mbstat.m_mtypes[mp->mt_type]; 135 printf("%u/%lu mbufs in use:\n", totmbufs, mbstat.m_mbufs); 136 for (mp = mbtypes; mp->mt_name; mp++) 137 if (mbstat.m_mtypes[mp->mt_type]) { 138 seen[mp->mt_type] = YES; 139 printf("\t%u mbufs allocated to %s\n", 140 mbstat.m_mtypes[mp->mt_type], mp->mt_name); 141 } 142 seen[MT_FREE] = YES; 143 for (i = 0; i < nmbtypes; i++) 144 if (!seen[i] && mbstat.m_mtypes[i]) { 145 printf("\t%u mbufs allocated to <mbuf type %d>\n", 146 mbstat.m_mtypes[i], i); 147 } 148 printf("%lu/%lu/%u mbuf clusters in use (current/peak/max)\n", 149 mbstat.m_clusters - mbstat.m_clfree, mbstat.m_clusters, 150 nmbclusters); 151 totmem = mbstat.m_mbufs * MSIZE + mbstat.m_clusters * MCLBYTES; 152 totfree = mbstat.m_clfree * MCLBYTES + 153 MSIZE * (mbstat.m_mbufs - totmbufs); 154 printf("%u Kbytes allocated to network (%d%% in use)\n", 155 totmem / 1024, (unsigned) (totmem - totfree) * 100 / totmem); 156 printf("%lu requests for memory denied\n", mbstat.m_drops); 157 printf("%lu requests for memory delayed\n", mbstat.m_wait); 158 printf("%lu calls to protocol drain routines\n", mbstat.m_drain); 159 } 160