1 /* $NetBSD: icmp.c,v 1.13 2014/06/03 22:22:41 joerg 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 1.13 2014/06/03 22:22:41 joerg 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 WINDOW *
openicmp(void)69 openicmp(void)
70 {
71
72 return (subwin(stdscr, -1, 0, 5, 0));
73 }
74
75 void
closeicmp(WINDOW * w)76 closeicmp(WINDOW *w)
77 {
78
79 if (w != NULL) {
80 wclear(w);
81 wrefresh(w);
82 delwin(w);
83 }
84 }
85
86 void
labelicmp(void)87 labelicmp(void)
88 {
89
90 wmove(wnd, 0, 0); wclrtoeol(wnd);
91
92 mvwprintw(wnd, 1, 0, "------------ ICMP input -----------");
93 mvwprintw(wnd, 1, 36, "------------- ICMP output ---------------");
94
95 mvwprintw(wnd, 8, 0, "---------- Input histogram --------");
96 mvwprintw(wnd, 8, 36, "---------- Output histogram -------------");
97
98 LHD(3, "with bad code");
99 LHD(4, "with bad length");
100 LHD(5, "with bad checksum");
101 LHD(6, "with insufficient data");
102
103 RHD(3, "errors generated");
104 RHD(4, "suppressed - original too short");
105 RHD(5, "suppressed - original was ICMP");
106 RHD(6, "responses sent");
107
108 BD(2, "total messages");
109 BD(9, "echo response");
110 BD(10, "echo request");
111 BD(11, "destination unreachable");
112 BD(12, "redirect");
113 BD(13, "time-to-live exceeded");
114 BD(14, "parameter problem");
115 LHD(15, "router advertisement");
116 RHD(15, "router solicitation");
117 }
118
119 void
showicmp(void)120 showicmp(void)
121 {
122 u_long tin, tout;
123 int i;
124
125 for (i = tin = tout = 0; i <= ICMP_MAXTYPE; i++) {
126 tin += curstat[ICMP_STAT_INHIST + i];
127 tout += curstat[ICMP_STAT_OUTHIST + i];
128 }
129
130 tin += curstat[ICMP_STAT_BADCODE] + curstat[ICMP_STAT_BADLEN] +
131 curstat[ICMP_STAT_CHECKSUM] + curstat[ICMP_STAT_TOOSHORT];
132 mvwprintw(wnd, 2, 0, "%9lu", tin);
133 mvwprintw(wnd, 2, 35, "%9lu", tout);
134
135 SHOW(ICMP_STAT_BADCODE, 3, 0);
136 SHOW(ICMP_STAT_BADLEN, 4, 0);
137 SHOW(ICMP_STAT_CHECKSUM, 5, 0);
138 SHOW(ICMP_STAT_TOOSHORT, 6, 0);
139 SHOW(ICMP_STAT_ERROR, 3, 35);
140 SHOW(ICMP_STAT_OLDSHORT, 4, 35);
141 SHOW(ICMP_STAT_OLDICMP, 5, 35);
142 SHOW(ICMP_STAT_REFLECT, 6, 35);
143
144 SHOW2(ICMP_ECHOREPLY, 9);
145 SHOW2(ICMP_ECHO, 10);
146 SHOW2(ICMP_UNREACH, 11);
147 SHOW2(ICMP_REDIRECT, 12);
148 SHOW2(ICMP_TIMXCEED, 13);
149 SHOW2(ICMP_PARAMPROB, 14);
150 SHOW(ICMP_STAT_INHIST + ICMP_ROUTERADVERT, 15, 0);
151 SHOW(ICMP_STAT_OUTHIST + ICMP_ROUTERSOLICIT, 15, 35);
152 }
153
154 int
initicmp(void)155 initicmp(void)
156 {
157
158 return (1);
159 }
160
161 void
fetchicmp(void)162 fetchicmp(void)
163 {
164 size_t i, size = sizeof(newstat);
165
166 if (sysctlbyname("net.inet.icmp.stats", newstat, &size, NULL, 0) == -1)
167 return;
168
169 xADJINETCTR(curstat, oldstat, newstat, ICMP_STAT_BADCODE);
170 xADJINETCTR(curstat, oldstat, newstat, ICMP_STAT_BADLEN);
171 xADJINETCTR(curstat, oldstat, newstat, ICMP_STAT_CHECKSUM);
172 xADJINETCTR(curstat, oldstat, newstat, ICMP_STAT_TOOSHORT);
173 xADJINETCTR(curstat, oldstat, newstat, ICMP_STAT_ERROR);
174 xADJINETCTR(curstat, oldstat, newstat, ICMP_STAT_OLDSHORT);
175 xADJINETCTR(curstat, oldstat, newstat, ICMP_STAT_OLDICMP);
176 xADJINETCTR(curstat, oldstat, newstat, ICMP_STAT_REFLECT);
177
178 for (i = 0; i <= ICMP_MAXTYPE; i++) {
179 xADJINETCTR(curstat, oldstat, newstat, ICMP_STAT_INHIST + i);
180 xADJINETCTR(curstat, oldstat, newstat, ICMP_STAT_OUTHIST + i);
181 }
182
183 if (update == UPDATE_TIME)
184 memcpy(oldstat, newstat, sizeof(oldstat));
185 }
186
187 void
icmp_boot(char * args)188 icmp_boot(char *args)
189 {
190
191 memset(oldstat, 0, sizeof(oldstat));
192 update = UPDATE_BOOT;
193 }
194
195 void
icmp_run(char * args)196 icmp_run(char *args)
197 {
198
199 if (update != UPDATE_RUN) {
200 memcpy(oldstat, newstat, sizeof(oldstat));
201 update = UPDATE_RUN;
202 }
203 }
204
205 void
icmp_time(char * args)206 icmp_time(char *args)
207 {
208
209 if (update != UPDATE_TIME) {
210 memcpy(oldstat, newstat, sizeof(oldstat));
211 update = UPDATE_TIME;
212 }
213 }
214
215 void
icmp_zero(char * args)216 icmp_zero(char *args)
217 {
218
219 if (update == UPDATE_RUN)
220 memcpy(oldstat, newstat, sizeof(oldstat));
221 }
222