1 /* $NetBSD: mbufs.c,v 1.15 2009/04/13 23:20:27 lukem Exp $ */ 2 3 /*- 4 * Copyright (c) 1980, 1992, 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. Neither the name of the University nor the names of its contributors 16 * may be used to endorse or promote products derived from this software 17 * without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 */ 31 32 #include <sys/cdefs.h> 33 #ifndef lint 34 #if 0 35 static char sccsid[] = "@(#)mbufs.c 8.1 (Berkeley) 6/6/93"; 36 #endif 37 __RCSID("$NetBSD: mbufs.c,v 1.15 2009/04/13 23:20:27 lukem Exp $"); 38 #endif /* not lint */ 39 40 #include <sys/param.h> 41 #include <sys/mbuf.h> 42 43 #include <stdlib.h> 44 45 #include "systat.h" 46 #include "extern.h" 47 48 static struct mbstat *mb; 49 50 const char *mtnames[] = { 51 "free", 52 "data", 53 "headers", 54 "sockets", 55 "pcbs", 56 "routes", 57 "hosts", 58 "arps", 59 "socknames", 60 "zombies", 61 "sockopts", 62 "frags", 63 "rights", 64 "ifaddrs", 65 }; 66 67 #define NNAMES (sizeof (mtnames) / sizeof (mtnames[0])) 68 69 WINDOW * 70 openmbufs(void) 71 { 72 73 return (subwin(stdscr, -1, 0, 5, 0)); 74 } 75 76 void 77 closembufs(WINDOW *w) 78 { 79 80 if (w == NULL) 81 return; 82 wclear(w); 83 wrefresh(w); 84 delwin(w); 85 } 86 87 void 88 labelmbufs(void) 89 { 90 91 wmove(wnd, 0, 0); wclrtoeol(wnd); 92 mvwaddstr(wnd, 0, 10, 93 "/0 /5 /10 /15 /20 /25 /30 /35 /40 /45 /50 /55 /60"); 94 } 95 96 void 97 showmbufs(void) 98 { 99 int i, j, max, idx; 100 char buf[10]; 101 102 if (mb == 0) 103 return; 104 for (j = 0; j < getmaxy(wnd); j++) { 105 max = 0, idx = -1; 106 for (i = 0; i < getmaxy(wnd); i++) 107 if (mb->m_mtypes[i] > max) { 108 max = mb->m_mtypes[i]; 109 idx = i; 110 } 111 if (max == 0) 112 break; 113 if (j > (int)NNAMES) 114 mvwprintw(wnd, 1+j, 0, "%10d", idx); 115 else 116 mvwprintw(wnd, 1+j, 0, "%-10.10s", mtnames[idx]); 117 wmove(wnd, 1 + j, 10); 118 if (max > 60) { 119 snprintf(buf, sizeof buf, " %5d", max); 120 max = 60; 121 while (max--) 122 waddch(wnd, 'X'); 123 waddstr(wnd, buf); 124 } else { 125 wclrtoeol(wnd); 126 whline(wnd, 'X', max); 127 } 128 mb->m_mtypes[idx] = 0; 129 } 130 wmove(wnd, 1+j, 0); wclrtobot(wnd); 131 } 132 133 static struct nlist namelist[] = { 134 #define X_MBSTAT 0 135 { .n_name = "_mbstat" }, 136 { .n_name = NULL } 137 }; 138 139 int 140 initmbufs(void) 141 { 142 143 if (namelist[X_MBSTAT].n_type == 0) { 144 if (kvm_nlist(kd, namelist)) { 145 nlisterr(namelist); 146 return(0); 147 } 148 if (namelist[X_MBSTAT].n_type == 0) { 149 error("No namelist"); 150 return(0); 151 } 152 } 153 if (mb == 0) 154 mb = (struct mbstat *)calloc(1, sizeof (*mb)); 155 return(1); 156 } 157 158 void 159 fetchmbufs(void) 160 { 161 162 if (namelist[X_MBSTAT].n_type == 0) 163 return; 164 NREAD(X_MBSTAT, mb, sizeof (*mb)); 165 } 166