1 /* $OpenBSD: mbuf.c,v 1.11 2002/01/17 21:34:58 mickey 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 1.11 2002/01/17 21:34:58 mickey Exp $"; 42 #endif 43 #endif /* not lint */ 44 45 #define __POOL_EXPOSE 46 47 #include <sys/param.h> 48 #include <sys/protosw.h> 49 #include <sys/socket.h> 50 #include <sys/mbuf.h> 51 #include <sys/pool.h> 52 53 #include <limits.h> 54 #include <stdio.h> 55 #include "netstat.h" 56 57 #define YES 1 58 typedef int bool; 59 60 struct mbstat mbstat; 61 struct pool mbpool, mclpool; 62 63 64 static struct mbtypes { 65 int mt_type; 66 char *mt_name; 67 } mbtypes[] = { 68 { MT_DATA, "data" }, 69 { MT_OOBDATA, "oob data" }, 70 { MT_CONTROL, "ancillary data" }, 71 { MT_HEADER, "packet headers" }, 72 { MT_FTABLE, "fragment reassembly queue headers" }, /* XXX */ 73 { MT_SONAME, "socket names and addresses" }, 74 { MT_SOOPTS, "socket options" }, 75 { 0, 0 } 76 }; 77 78 int nmbtypes = sizeof(mbstat.m_mtypes) / sizeof(short); 79 bool seen[256]; /* "have we seen this type yet?" */ 80 81 /* 82 * Print mbuf statistics. 83 */ 84 void 85 mbpr(mbaddr, mbpooladdr, mclpooladdr) 86 u_long mbaddr; 87 u_long mbpooladdr, mclpooladdr; 88 { 89 int totmem, totused, totmbufs, totpct; 90 int i; 91 struct mbtypes *mp; 92 int page_size = getpagesize(); 93 94 if (nmbtypes != 256) { 95 fprintf(stderr, 96 "%s: unexpected change to mbstat; check source\n", 97 __progname); 98 return; 99 } 100 if (mbaddr == 0) { 101 fprintf(stderr, "%s: mbstat: symbol not in namelist\n", 102 __progname); 103 return; 104 } 105 if (kread(mbaddr, (char *)&mbstat, sizeof (mbstat))) 106 return; 107 if (kread(mbpooladdr, (char *)&mbpool, sizeof (mbpool))) 108 return; 109 110 if (kread(mclpooladdr, (char *)&mclpool, sizeof (mclpool))) 111 return; 112 113 totmbufs = 0; 114 for (mp = mbtypes; mp->mt_name; mp++) 115 totmbufs += mbstat.m_mtypes[mp->mt_type]; 116 printf("%u mbuf%s in use:\n", totmbufs, plural(totmbufs)); 117 for (mp = mbtypes; mp->mt_name; mp++) 118 if (mbstat.m_mtypes[mp->mt_type]) { 119 seen[mp->mt_type] = YES; 120 printf("\t%u mbuf%s allocated to %s\n", 121 mbstat.m_mtypes[mp->mt_type], 122 plural((int)mbstat.m_mtypes[mp->mt_type]), 123 mp->mt_name); 124 } 125 seen[MT_FREE] = YES; 126 for (i = 0; i < nmbtypes; i++) 127 if (!seen[i] && mbstat.m_mtypes[i]) { 128 printf("\t%u mbuf%s allocated to <mbuf type %d>\n", 129 mbstat.m_mtypes[i], 130 plural((int)mbstat.m_mtypes[i]), i); 131 } 132 printf("%lu/%lu mapped pages in use\n", 133 (u_long)(mclpool.pr_nget - mclpool.pr_nput), 134 ((u_long)mclpool.pr_npages * mclpool.pr_itemsperpage)); 135 totmem = (mbpool.pr_npages * page_size) + 136 (mclpool.pr_npages * page_size); 137 totused = (mbpool.pr_nget - mbpool.pr_nput) * mbpool.pr_size + 138 (mclpool.pr_nget - mclpool.pr_nput) * mclpool.pr_size; 139 totpct = (totmem == 0)? 0 : ((totused * 100)/totmem); 140 printf("%u Kbytes allocated to network (%d%% in use)\n", 141 totmem / 1024, totpct); 142 printf("%lu requests for memory denied\n", mbstat.m_drops); 143 printf("%lu requests for memory delayed\n", mbstat.m_wait); 144 printf("%lu calls to protocol drain routines\n", mbstat.m_drain); 145 } 146