usr.bin/systat/icmp.c

   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@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 (! use_sysctl) {
 164                 if (namelist[0].n_type == 0) {
 165                         if (kvm_nlist(kd, namelist)) {
 166                                 nlisterr(namelist);
 167                                 return(0);
 168                         }
 169                         if (namelist[0].n_type == 0) {
 170                                 error("No namelist");
 171                                 return(0);
 172                         }
 173                 }
 174         }
 175
 176         return (1);
 177 }
 178
 179 void
 180 fetchicmp(void)
 181 {
 182         int i;
 183
 184         if (use_sysctl) {
 185                 size_t size = sizeof(newstat);
 186
 187                 if (sysctlbyname("net.inet.icmp.stats", newstat, &size,
 188                                  NULL, 0) == -1)
 189                         return;
 190         } else {
 191                 KREAD((void *)namelist[0].n_value, newstat, sizeof(newstat));
 192         }
 193
 194         xADJINETCTR(curstat, oldstat, newstat, ICMP_STAT_BADCODE);
 195         xADJINETCTR(curstat, oldstat, newstat, ICMP_STAT_BADLEN);
 196         xADJINETCTR(curstat, oldstat, newstat, ICMP_STAT_CHECKSUM);
 197         xADJINETCTR(curstat, oldstat, newstat, ICMP_STAT_TOOSHORT);
 198         xADJINETCTR(curstat, oldstat, newstat, ICMP_STAT_ERROR);
 199         xADJINETCTR(curstat, oldstat, newstat, ICMP_STAT_OLDSHORT);
 200         xADJINETCTR(curstat, oldstat, newstat, ICMP_STAT_OLDICMP);
 201         xADJINETCTR(curstat, oldstat, newstat, ICMP_STAT_REFLECT);
 202
 203         for (i = 0; i <= ICMP_MAXTYPE; i++) {
 204                 xADJINETCTR(curstat, oldstat, newstat, ICMP_STAT_INHIST + i);
 205                 xADJINETCTR(curstat, oldstat, newstat, ICMP_STAT_OUTHIST + i);
 206         }
 207
 208         if (update == UPDATE_TIME)
 209                 memcpy(oldstat, newstat, sizeof(oldstat));
 210 }
 211
 212 void
 213 icmp_boot(char *args)
 214 {
 215
 216         memset(oldstat, 0, sizeof(oldstat));
 217         update = UPDATE_BOOT;
 218 }
 219
 220 void
 221 icmp_run(char *args)
 222 {
 223
 224         if (update != UPDATE_RUN) {
 225                 memcpy(oldstat, newstat, sizeof(oldstat));
 226                 update = UPDATE_RUN;
 227         }
 228 }
 229
 230 void
 231 icmp_time(char *args)
 232 {
 233
 234         if (update != UPDATE_TIME) {
 235                 memcpy(oldstat, newstat, sizeof(oldstat));
 236                 update = UPDATE_TIME;
 237         }
 238 }
 239
 240 void
 241 icmp_zero(char *args)
 242 {
 243
 244         if (update == UPDATE_RUN)
 245                 memcpy(oldstat, newstat, sizeof(oldstat));
 246 }