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mbufs.c revision 1.13 
      1 /*	$NetBSD: mbufs.c,v 1.13 2005/02/26 22:12:33 dsl 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 1.13 2005/02/26 22:12:33 dsl 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 > 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 	{ "_mbstat" },
    136 	{ "" }
    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