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 "$FreeBSD$"; 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 #ifdef MT_RTABLE 72 { MT_RTABLE, "routing table entries" }, /* XXX */ 73 #endif 74 #ifdef MT_HTABLE 75 { MT_HTABLE, "IMP host table entries" }, /* XXX */ 76 #endif 77 #ifdef MT_ATABLE 78 { MT_ATABLE, "address resolution tables" }, 79 #endif 80 { MT_FTABLE, "fragment reassembly queue headers" }, /* XXX */ 81 { MT_SONAME, "socket names and addresses" }, 82 #ifdef MT_SOOPTS 83 { MT_SOOPTS, "socket options" }, 84 #endif 85 #ifdef MT_RIGHTS 86 { MT_RIGHTS, "access rights" }, 87 #endif 88 #ifdef MT_IFADDR 89 { MT_IFADDR, "interface addresses" }, /* XXX */ 90 #endif 91 { 0, 0 } 92 }; 93 94 int nmbtypes = sizeof(mbstat.m_mtypes) / sizeof(short); 95 bool seen[256]; /* "have we seen this type yet?" */ 96 97 /* 98 * Print mbuf statistics. 99 */ 100 void 101 mbpr() 102 { 103 register int totmem, totfree, totmbufs; 104 register int i; 105 register struct mbtypes *mp; 106 int name[3], nmbclusters, nmbufs; 107 size_t nmbclen, nmbuflen, mbstatlen; 108 109 name[0] = CTL_KERN; 110 name[1] = KERN_IPC; 111 name[2] = KIPC_MBSTAT; 112 mbstatlen = sizeof mbstat; 113 if (sysctl(name, 3, &mbstat, &mbstatlen, 0, 0) < 0) { 114 warn("sysctl: retrieving mbstat"); 115 return; 116 } 117 118 name[2] = KIPC_NMBCLUSTERS; 119 nmbclen = sizeof(int); 120 if (sysctl(name, 3, &nmbclusters, &nmbclen, 0, 0) < 0) { 121 warn("sysctl: retrieving nmbclusters"); 122 return; 123 } 124 125 nmbuflen = sizeof(int); 126 if (sysctlbyname("kern.ipc.nmbufs", &nmbufs, &nmbuflen, 0, 0) < 0) { 127 warn("sysctl: retrieving nmbufs"); 128 return; 129 } 130 131 #undef MSIZE 132 #define MSIZE (mbstat.m_msize) 133 #undef MCLBYTES 134 #define MCLBYTES (mbstat.m_mclbytes) 135 136 if (nmbtypes != 256) { 137 warnx("unexpected change to mbstat; check source"); 138 return; 139 } 140 141 totmbufs = 0; 142 for (mp = mbtypes; mp->mt_name; mp++) 143 totmbufs += mbstat.m_mtypes[mp->mt_type]; 144 printf("%u/%lu/%u mbufs in use (current/peak/max):\n", totmbufs, 145 mbstat.m_mbufs, nmbufs); 146 for (mp = mbtypes; mp->mt_name; mp++) 147 if (mbstat.m_mtypes[mp->mt_type]) { 148 seen[mp->mt_type] = YES; 149 printf("\t%u mbufs allocated to %s\n", 150 mbstat.m_mtypes[mp->mt_type], mp->mt_name); 151 } 152 seen[MT_FREE] = YES; 153 for (i = 0; i < nmbtypes; i++) 154 if (!seen[i] && mbstat.m_mtypes[i]) { 155 printf("\t%u mbufs allocated to <mbuf type %d>\n", 156 mbstat.m_mtypes[i], i); 157 } 158 printf("%lu/%lu/%u mbuf clusters in use (current/peak/max)\n", 159 mbstat.m_clusters - mbstat.m_clfree, mbstat.m_clusters, 160 nmbclusters); 161 totmem = mbstat.m_mbufs * MSIZE + mbstat.m_clusters * MCLBYTES; 162 totfree = mbstat.m_clfree * MCLBYTES + 163 MSIZE * (mbstat.m_mbufs - totmbufs); 164 printf("%u Kbytes allocated to network (%d%% in use)\n", 165 totmem / 1024, (unsigned) (totmem - totfree) * 100 / totmem); 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