1 /* $NetBSD: icmp.c,v 1.12 2008/04/10 17:16:39 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 1.12 2008/04/10 17:16:39 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 } 247