xref: /freebsd/usr.bin/systat/icmp.c (revision f7c4bd95ba735bd6a5454b4953945a99cefbb80c)
1 /*-
2  * Copyright (c) 1980, 1992, 1993
3  *	The Regents of the University of California.  All rights reserved.
4  *
5  * Redistribution and use in source and binary forms, with or without
6  * modification, are permitted provided that the following conditions
7  * are met:
8  * 1. Redistributions of source code must retain the above copyright
9  *    notice, this list of conditions and the following disclaimer.
10  * 2. Redistributions in binary form must reproduce the above copyright
11  *    notice, this list of conditions and the following disclaimer in the
12  *    documentation and/or other materials provided with the distribution.
13  * 3. All advertising materials mentioning features or use of this software
14  *    must display the following acknowledgement:
15  *	This product includes software developed by the University of
16  *	California, Berkeley and its contributors.
17  * 4. Neither the name of the University nor the names of its contributors
18  *    may be used to endorse or promote products derived from this software
19  *    without specific prior written permission.
20  *
21  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31  * SUCH DAMAGE.
32  */
33 
34 #include <sys/cdefs.h>
35 
36 __FBSDID("$FreeBSD$");
37 
38 #ifdef lint
39 static char sccsid[] = "@(#)mbufs.c	8.1 (Berkeley) 6/6/93";
40 #endif
41 
42 /* From:
43 	"Id: mbufs.c,v 1.5 1997/02/24 20:59:03 wollman Exp"
44 */
45 
46 #include <sys/param.h>
47 #include <sys/types.h>
48 #include <sys/socket.h>
49 #include <sys/sysctl.h>
50 
51 #include <netinet/in.h>
52 #include <netinet/in_systm.h>
53 #include <netinet/ip.h>
54 #include <netinet/ip_icmp.h>
55 #include <netinet/icmp_var.h>
56 
57 #include <stdlib.h>
58 #include <string.h>
59 #include <paths.h>
60 #include "systat.h"
61 #include "extern.h"
62 #include "mode.h"
63 
64 static struct icmpstat icmpstat, initstat, oldstat;
65 
66 /*-
67 --0         1         2         3         4         5         6         7
68 --0123456789012345678901234567890123456789012345678901234567890123456789012345
69 00          ICMP Input                         ICMP Output
70 01999999999 total messages           999999999 total messages
71 02999999999 with bad code            999999999 errors generated
72 03999999999 with bad length          999999999 suppressed - original too short
73 04999999999 with bad checksum        999999999 suppressed - original was ICMP
74 05999999999 with insufficient data   999999999 responses sent
75 06                                   999999999 suppressed - multicast echo
76 07                                   999999999 suppressed - multicast tstamp
77 08
78 09          Input Histogram                    Output Histogram
79 10999999999 echo response            999999999 echo response
80 11999999999 echo request             999999999 echo request
81 12999999999 destination unreachable  999999999 destination unreachable
82 13999999999 redirect                 999999999 redirect
83 14999999999 time-to-live exceeded    999999999 time-to-line exceeded
84 15999999999 parameter problem        999999999 parameter problem
85 16999999999 router advertisement     999999999 router solicitation
86 17
87 18
88 --0123456789012345678901234567890123456789012345678901234567890123456789012345
89 --0         1         2         3         4         5         6         7
90 */
91 
92 WINDOW *
93 openicmp(void)
94 {
95 	return (subwin(stdscr, LINES-3-1, 0, MAINWIN_ROW, 0));
96 }
97 
98 void
99 closeicmp(WINDOW *w)
100 {
101 	if (w == NULL)
102 		return;
103 	wclear(w);
104 	wrefresh(w);
105 	delwin(w);
106 }
107 
108 void
109 labelicmp(void)
110 {
111 	wmove(wnd, 0, 0); wclrtoeol(wnd);
112 #define L(row, str) mvwprintw(wnd, row, 10, str)
113 #define R(row, str) mvwprintw(wnd, row, 45, str);
114 	L(0, "ICMP Input");		R(0, "ICMP Output");
115 	L(1, "total messages");		R(1, "total messages");
116 	L(2, "with bad code");		R(2, "errors generated");
117 	L(3, "with bad length");	R(3, "suppressed - original too short");
118 	L(4, "with bad checksum");	R(4, "suppressed - original was ICMP");
119 	L(5, "with insufficient data");	R(5, "responses sent");
120 					R(6, "suppressed - multicast echo");
121 					R(7, "suppressed - multicast tstamp");
122 	L(9, "Input Histogram");	R(9, "Output Histogram");
123 #define B(row, str) L(row, str); R(row, str)
124 	B(10, "echo response");
125 	B(11, "echo request");
126 	B(12, "destination unreachable");
127 	B(13, "redirect");
128 	B(14, "time-to-live exceeded");
129 	B(15, "parameter problem");
130 	L(16, "router advertisement");	R(16, "router solicitation");
131 #undef L
132 #undef R
133 #undef B
134 }
135 
136 static void
137 domode(struct icmpstat *ret)
138 {
139 	const struct icmpstat *sub;
140 	int i, divisor = 1;
141 
142 	switch(currentmode) {
143 	case display_RATE:
144 		sub = &oldstat;
145 		divisor = naptime;
146 		break;
147 	case display_DELTA:
148 		sub = &oldstat;
149 		break;
150 	case display_SINCE:
151 		sub = &initstat;
152 		break;
153 	default:
154 		*ret = icmpstat;
155 		return;
156 	}
157 #define DO(stat) ret->stat = (icmpstat.stat - sub->stat) / divisor
158 	DO(icps_error);
159 	DO(icps_oldshort);
160 	DO(icps_oldicmp);
161 	for (i = 0; i <= ICMP_MAXTYPE; i++) {
162 		DO(icps_outhist[i]);
163 	}
164 	DO(icps_badcode);
165 	DO(icps_tooshort);
166 	DO(icps_checksum);
167 	DO(icps_badlen);
168 	DO(icps_reflect);
169 	for (i = 0; i <= ICMP_MAXTYPE; i++) {
170 		DO(icps_inhist[i]);
171 	}
172 	DO(icps_bmcastecho);
173 	DO(icps_bmcasttstamp);
174 #undef DO
175 }
176 
177 void
178 showicmp(void)
179 {
180 	struct icmpstat stats;
181 	u_long totalin, totalout;
182 	int i;
183 
184 	memset(&stats, 0, sizeof stats);
185 	domode(&stats);
186 	for (i = totalin = totalout = 0; i <= ICMP_MAXTYPE; i++) {
187 		totalin += stats.icps_inhist[i];
188 		totalout += stats.icps_outhist[i];
189 	}
190 	totalin += stats.icps_badcode + stats.icps_badlen +
191 		stats.icps_checksum + stats.icps_tooshort;
192 	mvwprintw(wnd, 1, 0, "%9lu", totalin);
193 	mvwprintw(wnd, 1, 35, "%9lu", totalout);
194 
195 #define DO(stat, row, col) \
196 	mvwprintw(wnd, row, col, "%9lu", stats.stat)
197 
198 	DO(icps_badcode, 2, 0);
199 	DO(icps_badlen, 3, 0);
200 	DO(icps_checksum, 4, 0);
201 	DO(icps_tooshort, 5, 0);
202 	DO(icps_error, 2, 35);
203 	DO(icps_oldshort, 3, 35);
204 	DO(icps_oldicmp, 4, 35);
205 	DO(icps_reflect, 5, 35);
206 	DO(icps_bmcastecho, 6, 35);
207 	DO(icps_bmcasttstamp, 7, 35);
208 #define DO2(type, row) DO(icps_inhist[type], row, 0); DO(icps_outhist[type], \
209 							 row, 35)
210 	DO2(ICMP_ECHOREPLY, 10);
211 	DO2(ICMP_ECHO, 11);
212 	DO2(ICMP_UNREACH, 12);
213 	DO2(ICMP_REDIRECT, 13);
214 	DO2(ICMP_TIMXCEED, 14);
215 	DO2(ICMP_PARAMPROB, 15);
216 	DO(icps_inhist[ICMP_ROUTERADVERT], 16, 0);
217 	DO(icps_outhist[ICMP_ROUTERSOLICIT], 16, 35);
218 #undef DO
219 #undef DO2
220 }
221 
222 int
223 initicmp(void)
224 {
225 	size_t len;
226 	int name[4];
227 
228 	name[0] = CTL_NET;
229 	name[1] = PF_INET;
230 	name[2] = IPPROTO_ICMP;
231 	name[3] = ICMPCTL_STATS;
232 
233 	len = 0;
234 	if (sysctl(name, 4, 0, &len, 0, 0) < 0) {
235 		error("sysctl getting icmpstat size failed");
236 		return 0;
237 	}
238 	if (len > sizeof icmpstat) {
239 		error("icmpstat structure has grown--recompile systat!");
240 		return 0;
241 	}
242 	if (sysctl(name, 4, &initstat, &len, 0, 0) < 0) {
243 		error("sysctl getting icmpstat size failed");
244 		return 0;
245 	}
246 	oldstat = initstat;
247 	return 1;
248 }
249 
250 void
251 reseticmp(void)
252 {
253 	size_t len;
254 	int name[4];
255 
256 	name[0] = CTL_NET;
257 	name[1] = PF_INET;
258 	name[2] = IPPROTO_ICMP;
259 	name[3] = ICMPCTL_STATS;
260 
261 	len = sizeof initstat;
262 	if (sysctl(name, 4, &initstat, &len, 0, 0) < 0) {
263 		error("sysctl getting icmpstat size failed");
264 	}
265 	oldstat = initstat;
266 }
267 
268 void
269 fetchicmp(void)
270 {
271 	int name[4];
272 	size_t len;
273 
274 	oldstat = icmpstat;
275 	name[0] = CTL_NET;
276 	name[1] = PF_INET;
277 	name[2] = IPPROTO_ICMP;
278 	name[3] = ICMPCTL_STATS;
279 	len = sizeof icmpstat;
280 
281 	if (sysctl(name, 4, &icmpstat, &len, 0, 0) < 0)
282 		return;
283 }
284 
285