mbufs.c revision 84153
1/*- 2 * Copyright (c) 1980, 1992, 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 35static char sccsid[] = "@(#)mbufs.c 8.1 (Berkeley) 6/6/93"; 36static const char rcsid[] = 37 "$FreeBSD: head/usr.bin/systat/mbufs.c 84153 2001-09-30 01:58:39Z bmilekic $"; 38#endif /* not lint */ 39 40#include <sys/param.h> 41#include <sys/types.h> 42#include <sys/mbuf.h> 43#include <sys/sysctl.h> 44 45#include <errno.h> 46#include <stdlib.h> 47#include <string.h> 48#include <paths.h> 49#include "systat.h" 50#include "extern.h" 51 52static struct mbpstat **mbpstat; 53static struct mbstat *mbstat; 54static int num_objs; 55static long *m_mbtypes; 56static short nmbtypes; 57#define GENLST (num_objs - 1) 58 59static struct mtnames { 60 short mt_type; 61 char *mt_name; 62} mtnames[] = { 63 { MT_DATA, "data"}, 64 { MT_HEADER, "headers"}, 65 { MT_SONAME, "socknames"}, 66 { MT_FTABLE, "frags"}, 67 { MT_CONTROL, "control"}, 68 { MT_OOBDATA, "oobdata"} 69}; 70#define NNAMES (sizeof (mtnames) / sizeof (mtnames[0])) 71 72WINDOW * 73openmbufs() 74{ 75 return (subwin(stdscr, LINES-5-1, 0, 5, 0)); 76} 77 78void 79closembufs(w) 80 WINDOW *w; 81{ 82 if (w == NULL) 83 return; 84 wclear(w); 85 wrefresh(w); 86 delwin(w); 87} 88 89void 90labelmbufs() 91{ 92 wmove(wnd, 0, 0); wclrtoeol(wnd); 93 mvwaddstr(wnd, 0, 10, 94 "/0 /5 /10 /15 /20 /25 /30 /35 /40 /45 /50 /55 /60"); 95} 96 97void 98showmbufs() 99{ 100 int i, j, max, index; 101 u_long totfree; 102 char buf[10]; 103 char *mtname; 104 105 totfree = mbpstat[GENLST]->mb_mbfree; 106 for (i = 1; i < nmbtypes; i++) 107 m_mbtypes[i] += mbpstat[GENLST]->mb_mbtypes[i]; 108 for (i = 0; i < GENLST; i++) { 109 if (mbpstat[i]->mb_active == 0) 110 continue; 111 totfree += mbpstat[i]->mb_mbfree; 112 for (j = 1; j < nmbtypes; j++) 113 m_mbtypes[j] += mbpstat[i]->mb_mbtypes[j]; 114 } 115 116 /* 117 * Print totals for different mbuf types. 118 */ 119 for (j = 0; j < wnd->_maxy; j++) { 120 max = 0, index = -1; 121 for (i = 0; i < wnd->_maxy; i++) { 122 if (i == MT_NOTMBUF) 123 continue; 124 if (i >= nmbtypes) 125 break; 126 if (m_mbtypes[i] > max) { 127 max = m_mbtypes[i]; 128 index = i; 129 } 130 } 131 if (max == 0) 132 break; 133 134 mtname = NULL; 135 for (i = 0; i < NNAMES; i++) 136 if (mtnames[i].mt_type == index) 137 mtname = mtnames[i].mt_name; 138 if (mtname == NULL) 139 mvwprintw(wnd, 1+j, 0, "%10d", index); 140 else 141 mvwprintw(wnd, 1+j, 0, "%-10.10s", mtname); 142 wmove(wnd, 1 + j, 10); 143 if (max > 60) { 144 snprintf(buf, sizeof(buf), " %d", max); 145 max = 60; 146 while (max--) 147 waddch(wnd, 'X'); 148 waddstr(wnd, buf); 149 } else 150 while (max--) 151 waddch(wnd, 'X'); 152 wclrtoeol(wnd); 153 m_mbtypes[index] = 0; 154 } 155 156 /* 157 * Print total number of free mbufs. 158 */ 159 if (totfree > 0) { 160 mvwprintw(wnd, 1+j, 0, "%-10.10s", "free"); 161 if (totfree > 60) { 162 snprintf(buf, sizeof(buf), " %lu", totfree); 163 totfree = 60; 164 while(totfree--) 165 waddch(wnd, 'X'); 166 waddstr(wnd, buf); 167 } else { 168 while(totfree--) 169 waddch(wnd, 'X'); 170 } 171 wclrtoeol(wnd); 172 j++; 173 } 174 wmove(wnd, 1+j, 0); wclrtobot(wnd); 175} 176 177int 178initmbufs() 179{ 180 int i; 181 size_t len; 182 183 len = sizeof *mbstat; 184 if ((mbstat = malloc(len)) == NULL) { 185 error("malloc mbstat failed"); 186 return 0; 187 } 188 if (sysctlbyname("kern.ipc.mbstat", mbstat, &len, NULL, 0) < 0) { 189 error("sysctl retrieving mbstat"); 190 return 0; 191 } 192 nmbtypes = mbstat->m_numtypes; 193 if ((m_mbtypes = calloc(nmbtypes, sizeof(long *))) == NULL) { 194 error("calloc m_mbtypes failed"); 195 return 0; 196 } 197 198 if (sysctlbyname("kern.ipc.mb_statpcpu", NULL, &len, NULL, 0) < 0) { 199 error("sysctl getting mbpstat total size failed"); 200 return 0; 201 } 202 num_objs = (int)(len / sizeof(struct mbpstat)); 203 if ((mbpstat = calloc(num_objs, sizeof(struct mbpstat *))) == NULL) { 204 error("calloc mbpstat pointers failed"); 205 return 0; 206 } 207 if ((mbpstat[0] = calloc(num_objs, sizeof(struct mbpstat))) == NULL) { 208 error("calloc mbpstat structures failed"); 209 return 0; 210 } 211 212 for (i = 0; i < num_objs; i++) 213 mbpstat[i] = mbpstat[0] + i; 214 215 return 1; 216} 217 218void 219fetchmbufs() 220{ 221 size_t len; 222 223 len = num_objs * sizeof(struct mbpstat); 224 if (sysctlbyname("kern.ipc.mb_statpcpu", mbpstat[0], &len, NULL, 0) < 0) 225 printw("sysctl: mbpstat: %s", strerror(errno)); 226} 227