1 /* $OpenBSD: mbuf.c,v 1.3 1996/06/26 05:37:23 deraadt Exp $ */ 2 /* $NetBSD: mbuf.c,v 1.9 1996/05/07 02:55:03 thorpej Exp $ */ 3 4 /* 5 * Copyright (c) 1983, 1988, 1993 6 * The Regents of the University of California. All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. All advertising materials mentioning features or use of this software 17 * must display the following acknowledgement: 18 * This product includes software developed by the University of 19 * California, Berkeley and its contributors. 20 * 4. Neither the name of the University nor the names of its contributors 21 * may be used to endorse or promote products derived from this software 22 * without specific prior written permission. 23 * 24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 27 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 34 * SUCH DAMAGE. 35 */ 36 37 #ifndef lint 38 #if 0 39 static char sccsid[] = "from: @(#)mbuf.c 8.1 (Berkeley) 6/6/93"; 40 #else 41 static char *rcsid = "$OpenBSD: mbuf.c,v 1.3 1996/06/26 05:37:23 deraadt Exp $"; 42 #endif 43 #endif /* not lint */ 44 45 #include <sys/param.h> 46 #include <sys/protosw.h> 47 #include <sys/socket.h> 48 #include <sys/mbuf.h> 49 50 #include <stdio.h> 51 #include "netstat.h" 52 53 #define YES 1 54 typedef int bool; 55 56 struct mbstat mbstat; 57 58 static struct mbtypes { 59 int mt_type; 60 char *mt_name; 61 } mbtypes[] = { 62 { MT_DATA, "data" }, 63 { MT_OOBDATA, "oob data" }, 64 { MT_CONTROL, "ancillary data" }, 65 { MT_HEADER, "packet headers" }, 66 { MT_FTABLE, "fragment reassembly queue headers" }, /* XXX */ 67 { MT_SONAME, "socket names and addresses" }, 68 { MT_SOOPTS, "socket options" }, 69 { 0, 0 } 70 }; 71 72 int nmbtypes = sizeof(mbstat.m_mtypes) / sizeof(short); 73 bool seen[256]; /* "have we seen this type yet?" */ 74 75 /* 76 * Print mbuf statistics. 77 */ 78 void 79 mbpr(mbaddr) 80 u_long mbaddr; 81 { 82 register int totmem, totfree, totmbufs; 83 register int i; 84 register struct mbtypes *mp; 85 86 if (nmbtypes != 256) { 87 fprintf(stderr, 88 "%s: unexpected change to mbstat; check source\n", 89 __progname); 90 return; 91 } 92 if (mbaddr == 0) { 93 fprintf(stderr, "%s: mbstat: symbol not in namelist\n", 94 __progname); 95 return; 96 } 97 if (kread(mbaddr, (char *)&mbstat, sizeof (mbstat))) 98 return; 99 totmbufs = 0; 100 for (mp = mbtypes; mp->mt_name; mp++) 101 totmbufs += mbstat.m_mtypes[mp->mt_type]; 102 printf("%u mbufs in use:\n", totmbufs); 103 for (mp = mbtypes; mp->mt_name; mp++) 104 if (mbstat.m_mtypes[mp->mt_type]) { 105 seen[mp->mt_type] = YES; 106 printf("\t%u mbufs allocated to %s\n", 107 mbstat.m_mtypes[mp->mt_type], mp->mt_name); 108 } 109 seen[MT_FREE] = YES; 110 for (i = 0; i < nmbtypes; i++) 111 if (!seen[i] && mbstat.m_mtypes[i]) { 112 printf("\t%u mbufs allocated to <mbuf type %d>\n", 113 mbstat.m_mtypes[i], i); 114 } 115 printf("%u/%u mapped pages in use\n", 116 mbstat.m_clusters - mbstat.m_clfree, mbstat.m_clusters); 117 totmem = totmbufs * MSIZE + mbstat.m_clusters * MCLBYTES; 118 totfree = mbstat.m_clfree * MCLBYTES; 119 printf("%u Kbytes allocated to network (%d%% in use)\n", 120 totmem / 1024, (totmem - totfree) * 100 / totmem); 121 printf("%u requests for memory denied\n", mbstat.m_drops); 122 printf("%u requests for memory delayed\n", mbstat.m_wait); 123 printf("%u calls to protocol drain routines\n", mbstat.m_drain); 124 } 125