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icmp.c revision 1.5 
      1 /*	$NetBSD: icmp.c,v 1.5 2000/07/05 11:03:21 ad Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 1999, 2000 Andrew Doran <ad (at) NetBSD.org>
      5  * 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  *
     16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
     17  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     18  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     19  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
     20  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     21  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     22  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     23  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     24  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     25  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     26  * SUCH DAMAGE.
     27  *
     28  */
     29 
     30 #include <sys/cdefs.h>
     31 #ifndef lint
     32 __RCSID("$NetBSD: icmp.c,v 1.5 2000/07/05 11:03:21 ad Exp $");
     33 #endif /* not lint */
     34 
     35 #include <sys/param.h>
     36 #include <sys/types.h>
     37 #include <sys/socket.h>
     38 #include <sys/sysctl.h>
     39 
     40 #include <netinet/in.h>
     41 #include <netinet/in_systm.h>
     42 #include <netinet/ip.h>
     43 #include <netinet/ip_icmp.h>
     44 #include <netinet/icmp_var.h>
     45 
     46 #include <stdlib.h>
     47 #include <string.h>
     48 #include <paths.h>
     49 #include <nlist.h>
     50 #include <kvm.h>
     51 
     52 #include "systat.h"
     53 #include "extern.h"
     54 
     55 #define LHD(row, str) mvwprintw(wnd, row, 10, str)
     56 #define RHD(row, str) mvwprintw(wnd, row, 45, str);
     57 #define BD(row, str) LHD(row, str); RHD(row, str)
     58 #define SHOW(stat, row, col) \
     59     mvwprintw(wnd, row, col, "%9llu", (unsigned long long)curstat.stat)
     60 #define SHOW2(type, row) SHOW(icps_inhist[type], row, 0); \
     61     SHOW(icps_outhist[type], row, 35)
     62 
     63 enum update {
     64 	UPDATE_TIME,
     65 	UPDATE_BOOT,
     66 	UPDATE_RUN,
     67 };
     68 
     69 static enum update update = UPDATE_TIME;
     70 static struct icmpstat curstat;
     71 static struct icmpstat newstat;
     72 static struct icmpstat oldstat;
     73 
     74 static struct nlist namelist[] = {
     75 	{ "_icmpstat" },
     76 	{ "" }
     77 };
     78 
     79 WINDOW *
     80 openicmp(void)
     81 {
     82 
     83 	return (subwin(stdscr, LINES-5-1, 0, 5, 0));
     84 }
     85 
     86 void
     87 closeicmp(WINDOW *w)
     88 {
     89 
     90 	if (w != NULL) {
     91 		wclear(w);
     92 		wrefresh(w);
     93 		delwin(w);
     94 	}
     95 }
     96 
     97 void
     98 labelicmp(void)
     99 {
    100 
    101 	wmove(wnd, 0, 0); wclrtoeol(wnd);
    102 
    103 	mvwprintw(wnd, 1, 0,  "------------ ICMP input -----------");
    104 	mvwprintw(wnd, 1, 36, "------------- ICMP output ---------------");
    105 
    106 	mvwprintw(wnd, 8, 0,  "---------- Input histogram --------");
    107 	mvwprintw(wnd, 8, 36, "---------- Output histogram -------------");
    108 
    109 	LHD(3, "with bad code");
    110 	LHD(4, "with bad length");
    111 	LHD(5, "with bad checksum");
    112 	LHD(6, "with insufficient data");
    113 
    114 	RHD(3, "errors generated");
    115 	RHD(4, "suppressed - original too short");
    116 	RHD(5, "suppressed - original was ICMP");
    117 	RHD(6, "responses sent");
    118 
    119 	BD(2, "total messages");
    120 	BD(9, "echo response");
    121 	BD(10, "echo request");
    122 	BD(11, "destination unreachable");
    123 	BD(12, "redirect");
    124 	BD(13, "time-to-live exceeded");
    125 	BD(14, "parameter problem");
    126 	LHD(15, "router advertisement");
    127 	RHD(15, "router solicitation");
    128 }
    129 
    130 void
    131 showicmp(void)
    132 {
    133 	u_long tin, tout;
    134 	int i;
    135 
    136 	for (i = tin = tout = 0; i <= ICMP_MAXTYPE; i++) {
    137 		tin += curstat.icps_inhist[i];
    138 		tout += curstat.icps_outhist[i];
    139 	}
    140 
    141 	tin += curstat.icps_badcode + curstat.icps_badlen +
    142 	    curstat.icps_checksum + curstat.icps_tooshort;
    143 	mvwprintw(wnd, 2, 0, "%9lu", tin);
    144 	mvwprintw(wnd, 2, 35, "%9lu", tout);
    145 
    146 	SHOW(icps_badcode, 3, 0);
    147 	SHOW(icps_badlen, 4, 0);
    148 	SHOW(icps_checksum, 5, 0);
    149 	SHOW(icps_tooshort, 6, 0);
    150 	SHOW(icps_error, 3, 35);
    151 	SHOW(icps_oldshort, 4, 35);
    152 	SHOW(icps_oldicmp, 5, 35);
    153 	SHOW(icps_reflect, 6, 35);
    154 
    155 	SHOW2(ICMP_ECHOREPLY, 9);
    156 	SHOW2(ICMP_ECHO, 10);
    157 	SHOW2(ICMP_UNREACH, 11);
    158 	SHOW2(ICMP_REDIRECT, 12);
    159 	SHOW2(ICMP_TIMXCEED, 13);
    160 	SHOW2(ICMP_PARAMPROB, 14);
    161 	SHOW(icps_inhist[ICMP_ROUTERADVERT], 15, 0);
    162 	SHOW(icps_outhist[ICMP_ROUTERSOLICIT], 15, 35);
    163 }
    164 
    165 int
    166 initicmp(void)
    167 {
    168 
    169 	if (namelist[0].n_type == 0) {
    170 		if (kvm_nlist(kd, namelist)) {
    171 			nlisterr(namelist);
    172 			return(0);
    173 		}
    174 		if (namelist[0].n_type == 0) {
    175 			error("No namelist");
    176 			return(0);
    177 		}
    178 	}
    179 
    180 	return (1);
    181 }
    182 
    183 void
    184 fetchicmp(void)
    185 {
    186 	int i;
    187 
    188 	KREAD((void *)namelist[0].n_value, &newstat, sizeof(newstat));
    189 
    190 	ADJINETCTR(curstat, oldstat, newstat, icps_badcode);
    191 	ADJINETCTR(curstat, oldstat, newstat, icps_badlen);
    192 	ADJINETCTR(curstat, oldstat, newstat, icps_checksum);
    193 	ADJINETCTR(curstat, oldstat, newstat, icps_tooshort);
    194 	ADJINETCTR(curstat, oldstat, newstat, icps_error);
    195 	ADJINETCTR(curstat, oldstat, newstat, icps_oldshort);
    196 	ADJINETCTR(curstat, oldstat, newstat, icps_oldicmp);
    197 	ADJINETCTR(curstat, oldstat, newstat, icps_reflect);
    198 
    199 	for (i = 0; i <= ICMP_MAXTYPE; i++) {
    200 		ADJINETCTR(curstat, oldstat, newstat, icps_inhist[i]);
    201 		ADJINETCTR(curstat, oldstat, newstat, icps_outhist[i]);
    202 	}
    203 
    204 	if (update == UPDATE_TIME)
    205 		memcpy(&oldstat, &newstat, sizeof(oldstat));
    206 }
    207 
    208 void
    209 icmp_boot(char *args)
    210 {
    211 
    212 	memset(&oldstat, 0, sizeof(oldstat));
    213 	update = UPDATE_BOOT;
    214 }
    215 
    216 void
    217 icmp_run(char *args)
    218 {
    219 
    220 	if (update != UPDATE_RUN) {
    221 		memcpy(&oldstat, &newstat, sizeof(oldstat));
    222 		update = UPDATE_RUN;
    223 	}
    224 }
    225 
    226 void
    227 icmp_time(char *args)
    228 {
    229 
    230 	if (update != UPDATE_TIME) {
    231 		memcpy(&oldstat, &newstat, sizeof(oldstat));
    232 		update = UPDATE_TIME;
    233 	}
    234 }
    235 
    236 void
    237 icmp_zero(char *args)
    238 {
    239 
    240 	if (update == UPDATE_RUN)
    241 		memcpy(&oldstat, &newstat, sizeof(oldstat));
    242 }
    243