1 /* $NetBSD: mbuf.c,v 1.11 1997/04/03 04:46:49 christos Exp $ */ 2 3 /* 4 * Copyright (c) 1983, 1988, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. All advertising materials mentioning features or use of this software 16 * must display the following acknowledgement: 17 * This product includes software developed by the University of 18 * California, Berkeley and its contributors. 19 * 4. Neither the name of the University nor the names of its contributors 20 * may be used to endorse or promote products derived from this software 21 * without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 * SUCH DAMAGE. 34 */ 35 36 #ifndef lint 37 #if 0 38 static char sccsid[] = "from: @(#)mbuf.c 8.1 (Berkeley) 6/6/93"; 39 #else 40 static char *rcsid = "$NetBSD: mbuf.c,v 1.11 1997/04/03 04:46:49 christos Exp $"; 41 #endif 42 #endif /* not lint */ 43 44 #include <sys/param.h> 45 #include <sys/protosw.h> 46 #include <sys/socket.h> 47 #include <sys/mbuf.h> 48 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 { MT_FTABLE, "fragment reassembly queue headers" }, /* XXX */ 66 { MT_SONAME, "socket names and addresses" }, 67 { MT_SOOPTS, "socket options" }, 68 { 0, 0 } 69 }; 70 71 int nmbtypes = sizeof(mbstat.m_mtypes) / sizeof(short); 72 bool seen[256]; /* "have we seen this type yet?" */ 73 74 /* 75 * Print mbuf statistics. 76 */ 77 void 78 mbpr(mbaddr, msizeaddr, mclbaddr) 79 u_long mbaddr; 80 u_long msizeaddr, mclbaddr; 81 { 82 register int totmem, totfree, totmbufs; 83 register int i; 84 register struct mbtypes *mp; 85 86 int mclbytes, msize; 87 88 if (nmbtypes != 256) { 89 fprintf(stderr, 90 "%s: unexpected change to mbstat; check source\n", 91 __progname); 92 return; 93 } 94 if (mbaddr == 0) { 95 fprintf(stderr, "%s: mbstat: symbol not in namelist\n", 96 __progname); 97 return; 98 } 99 /*XXX*/ 100 if (msizeaddr != 0) 101 kread(msizeaddr, (char *)&msize, sizeof (msize)); 102 else 103 msize = MSIZE; 104 if (mclbaddr != 0) 105 kread(mclbaddr, (char *)&mclbytes, sizeof (mclbytes)); 106 else 107 mclbytes = MCLBYTES; 108 /*XXX*/ 109 110 if (kread(mbaddr, (char *)&mbstat, sizeof (mbstat))) 111 return; 112 totmbufs = 0; 113 for (mp = mbtypes; mp->mt_name; mp++) 114 totmbufs += mbstat.m_mtypes[mp->mt_type]; 115 printf("%u mbufs in use:\n", totmbufs); 116 for (mp = mbtypes; mp->mt_name; mp++) 117 if (mbstat.m_mtypes[mp->mt_type]) { 118 seen[mp->mt_type] = YES; 119 printf("\t%u mbufs allocated to %s\n", 120 mbstat.m_mtypes[mp->mt_type], mp->mt_name); 121 } 122 seen[MT_FREE] = YES; 123 for (i = 0; i < nmbtypes; i++) 124 if (!seen[i] && mbstat.m_mtypes[i]) { 125 printf("\t%u mbufs allocated to <mbuf type %d>\n", 126 mbstat.m_mtypes[i], i); 127 } 128 printf("%lu/%lu mapped pages in use\n", 129 mbstat.m_clusters - mbstat.m_clfree, mbstat.m_clusters); 130 totmem = totmbufs * msize + mbstat.m_clusters * mclbytes; 131 totfree = mbstat.m_clfree * mclbytes; 132 printf("%u Kbytes allocated to network (%d%% in use)\n", 133 totmem / 1024, (totmem - totfree) * 100 / totmem); 134 printf("%lu requests for memory denied\n", mbstat.m_drops); 135 printf("%lu requests for memory delayed\n", mbstat.m_wait); 136 printf("%lu calls to protocol drain routines\n", mbstat.m_drain); 137 } 138