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
57enum update {
58	UPDATE_TIME,
59	UPDATE_BOOT,
60	UPDATE_RUN,
61};
62
63static enum update update = UPDATE_TIME;
64static uint64_t curstat[ICMP_NSTATS];
65static uint64_t newstat[ICMP_NSTATS];
66static uint64_t oldstat[ICMP_NSTATS];
67
68static struct nlist namelist[] = {
69	{ .n_name = "_icmpstat" },
70	{ .n_name = NULL }
71};
72
73WINDOW *
74openicmp(void)
75{
76
77	return (subwin(stdscr, -1, 0, 5, 0));
78}
79
80void
81closeicmp(WINDOW *w)
82{
83
84	if (w != NULL) {
85		wclear(w);
86		wrefresh(w);
87		delwin(w);
88	}
89}
90
91void
92labelicmp(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
124void
125showicmp(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
159int
160initicmp(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
179void
180fetchicmp(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
212void
213icmp_boot(char *args)
214{
215
216	memset(oldstat, 0, sizeof(oldstat));
217	update = UPDATE_BOOT;
218}
219
220void
221icmp_run(char *args)
222{
223
224	if (update != UPDATE_RUN) {
225		memcpy(oldstat, newstat, sizeof(oldstat));
226		update = UPDATE_RUN;
227	}
228}
229
230void
231icmp_time(char *args)
232{
233
234	if (update != UPDATE_TIME) {
235		memcpy(oldstat, newstat, sizeof(oldstat));
236		update = UPDATE_TIME;
237	}
238}
239
240void
241icmp_zero(char *args)
242{
243
244	if (update == UPDATE_RUN)
245		memcpy(oldstat, newstat, sizeof(oldstat));
246}
247