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icmp.c revision 1.11 
      1 /*	$NetBSD: icmp.c,v 1.11 2008/04/10 17:14:25 thorpej 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 1.11 2008/04/10 17:14:25 thorpej Exp $");
     33 #endif /* not lint */
     34 
     35 #include <sys/param.h>
     36 #include <sys/sysctl.h>
     37 
     38 #include <netinet/in.h>
     39 #include <netinet/in_systm.h>
     40 #include <netinet/ip.h>
     41 #include <netinet/ip_icmp.h>
     42 #include <netinet/icmp_var.h>
     43 
     44 #include <string.h>
     45 
     46 #include "systat.h"
     47 #include "extern.h"
     48 
     49 #define LHD(row, str) mvwprintw(wnd, row, 10, str)
     50 #define RHD(row, str) mvwprintw(wnd, row, 45, str);
     51 #define BD(row, str) LHD(row, str); RHD(row, str)
     52 #define SHOW(stat, row, col) \
     53     mvwprintw(wnd, row, col, "%9llu", (unsigned long long)curstat[stat])
     54 #define SHOW2(type, row) SHOW(ICMP_STAT_INHIST + type, row, 0); \
     55     SHOW(ICMP_STAT_OUTHIST + type, row, 35)
     56 
     57 enum update {
     58 	UPDATE_TIME,
     59 	UPDATE_BOOT,
     60 	UPDATE_RUN,
     61 };
     62 
     63 static enum update update = UPDATE_TIME;
     64 static uint64_t curstat[ICMP_NSTATS];
     65 static uint64_t newstat[ICMP_NSTATS];
     66 static uint64_t oldstat[ICMP_NSTATS];
     67 
     68 static struct nlist namelist[] = {
     69 	{ .n_name = "_icmpstat" },
     70 	{ .n_name = NULL }
     71 };
     72 
     73 WINDOW *
     74 openicmp(void)
     75 {
     76 
     77 	return (subwin(stdscr, -1, 0, 5, 0));
     78 }
     79 
     80 void
     81 closeicmp(WINDOW *w)
     82 {
     83 
     84 	if (w != NULL) {
     85 		wclear(w);
     86 		wrefresh(w);
     87 		delwin(w);
     88 	}
     89 }
     90 
     91 void
     92 labelicmp(void)
     93 {
     94 
     95 	wmove(wnd, 0, 0); wclrtoeol(wnd);
     96 
     97 	mvwprintw(wnd, 1, 0,  "------------ ICMP input -----------");
     98 	mvwprintw(wnd, 1, 36, "------------- ICMP output ---------------");
     99 
    100 	mvwprintw(wnd, 8, 0,  "---------- Input histogram --------");
    101 	mvwprintw(wnd, 8, 36, "---------- Output histogram -------------");
    102 
    103 	LHD(3, "with bad code");
    104 	LHD(4, "with bad length");
    105 	LHD(5, "with bad checksum");
    106 	LHD(6, "with insufficient data");
    107 
    108 	RHD(3, "errors generated");
    109 	RHD(4, "suppressed - original too short");
    110 	RHD(5, "suppressed - original was ICMP");
    111 	RHD(6, "responses sent");
    112 
    113 	BD(2, "total messages");
    114 	BD(9, "echo response");
    115 	BD(10, "echo request");
    116 	BD(11, "destination unreachable");
    117 	BD(12, "redirect");
    118 	BD(13, "time-to-live exceeded");
    119 	BD(14, "parameter problem");
    120 	LHD(15, "router advertisement");
    121 	RHD(15, "router solicitation");
    122 }
    123 
    124 void
    125 showicmp(void)
    126 {
    127 	u_long tin, tout;
    128 	int i;
    129 
    130 	for (i = tin = tout = 0; i <= ICMP_MAXTYPE; i++) {
    131 		tin += curstat[ICMP_STAT_INHIST + i];
    132 		tout += curstat[ICMP_STAT_OUTHIST + i];
    133 	}
    134 
    135 	tin += curstat[ICMP_STAT_BADCODE] + curstat[ICMP_STAT_BADLEN] +
    136 	    curstat[ICMP_STAT_CHECKSUM] + curstat[ICMP_STAT_TOOSHORT];
    137 	mvwprintw(wnd, 2, 0, "%9lu", tin);
    138 	mvwprintw(wnd, 2, 35, "%9lu", tout);
    139 
    140 	SHOW(ICMP_STAT_BADCODE, 3, 0);
    141 	SHOW(ICMP_STAT_BADLEN, 4, 0);
    142 	SHOW(ICMP_STAT_CHECKSUM, 5, 0);
    143 	SHOW(ICMP_STAT_TOOSHORT, 6, 0);
    144 	SHOW(ICMP_STAT_ERROR, 3, 35);
    145 	SHOW(ICMP_STAT_OLDSHORT, 4, 35);
    146 	SHOW(ICMP_STAT_OLDICMP, 5, 35);
    147 	SHOW(ICMP_STAT_REFLECT, 6, 35);
    148 
    149 	SHOW2(ICMP_ECHOREPLY, 9);
    150 	SHOW2(ICMP_ECHO, 10);
    151 	SHOW2(ICMP_UNREACH, 11);
    152 	SHOW2(ICMP_REDIRECT, 12);
    153 	SHOW2(ICMP_TIMXCEED, 13);
    154 	SHOW2(ICMP_PARAMPROB, 14);
    155 	SHOW(ICMP_STAT_INHIST + ICMP_ROUTERADVERT, 15, 0);
    156 	SHOW(ICMP_STAT_OUTHIST + ICMP_ROUTERSOLICIT, 15, 35);
    157 }
    158 
    159 int
    160 initicmp(void)
    161 {
    162 
    163 	if (namelist[0].n_type == 0) {
    164 		if (kvm_nlist(kd, namelist)) {
    165 			nlisterr(namelist);
    166 			return(0);
    167 		}
    168 		if (namelist[0].n_type == 0) {
    169 			error("No namelist");
    170 			return(0);
    171 		}
    172 	}
    173 
    174 	return (1);
    175 }
    176 
    177 void
    178 fetchicmp(void)
    179 {
    180 	int i;
    181 
    182 	if (use_sysctl) {
    183 		size_t size = sizeof(newstat);
    184 
    185 		if (sysctlbyname("net.inet.icmp.stats", newstat, &size,
    186 				 NULL, 0) == -1)
    187 			return;
    188 	} else {
    189 		KREAD((void *)namelist[0].n_value, newstat, sizeof(newstat));
    190 	}
    191 
    192 	xADJINETCTR(curstat, oldstat, newstat, ICMP_STAT_BADCODE);
    193 	xADJINETCTR(curstat, oldstat, newstat, ICMP_STAT_BADLEN);
    194 	xADJINETCTR(curstat, oldstat, newstat, ICMP_STAT_CHECKSUM);
    195 	xADJINETCTR(curstat, oldstat, newstat, ICMP_STAT_TOOSHORT);
    196 	xADJINETCTR(curstat, oldstat, newstat, ICMP_STAT_ERROR);
    197 	xADJINETCTR(curstat, oldstat, newstat, ICMP_STAT_OLDSHORT);
    198 	xADJINETCTR(curstat, oldstat, newstat, ICMP_STAT_OLDICMP);
    199 	xADJINETCTR(curstat, oldstat, newstat, ICMP_STAT_REFLECT);
    200 
    201 	for (i = 0; i <= ICMP_MAXTYPE; i++) {
    202 		xADJINETCTR(curstat, oldstat, newstat, ICMP_STAT_INHIST + i);
    203 		xADJINETCTR(curstat, oldstat, newstat, ICMP_STAT_OUTHIST + i);
    204 	}
    205 
    206 	if (update == UPDATE_TIME)
    207 		memcpy(oldstat, newstat, sizeof(oldstat));
    208 }
    209 
    210 void
    211 icmp_boot(char *args)
    212 {
    213 
    214 	memset(oldstat, 0, sizeof(oldstat));
    215 	update = UPDATE_BOOT;
    216 }
    217 
    218 void
    219 icmp_run(char *args)
    220 {
    221 
    222 	if (update != UPDATE_RUN) {
    223 		memcpy(oldstat, newstat, sizeof(oldstat));
    224 		update = UPDATE_RUN;
    225 	}
    226 }
    227 
    228 void
    229 icmp_time(char *args)
    230 {
    231 
    232 	if (update != UPDATE_TIME) {
    233 		memcpy(oldstat, newstat, sizeof(oldstat));
    234 		update = UPDATE_TIME;
    235 	}
    236 }
    237 
    238 void
    239 icmp_zero(char *args)
    240 {
    241 
    242 	if (update == UPDATE_RUN)
    243 		memcpy(oldstat, newstat, sizeof(oldstat));
    244 }
    245