1/*	$NetBSD: ip.c,v 1.16 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: ip.c,v 1.16 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_var.h>
42#include <netinet/udp.h>
43#include <netinet/udp_var.h>
44
45#include <string.h>
46
47#include "systat.h"
48#include "extern.h"
49
50#define LHD(row, str)		mvwprintw(wnd, row, 10, str)
51#define RHD(row, str)		mvwprintw(wnd, row, 45, str);
52#define SHOW(stat, row, col) \
53    mvwprintw(wnd, row, col, "%9llu", (unsigned long long)curstat.stat)
54
55struct mystat {
56	uint64_t i[IP_NSTATS];
57	uint64_t u[UDP_NSTATS];
58};
59
60enum update {
61	UPDATE_TIME,
62	UPDATE_BOOT,
63	UPDATE_RUN,
64};
65
66static enum update update = UPDATE_TIME;
67static struct mystat curstat;
68static struct mystat oldstat;
69static struct mystat newstat;
70
71static struct nlist namelist[] = {
72	{ .n_name = "_ipstat" },
73	{ .n_name = "_udpstat" },
74	{ .n_name = NULL }
75};
76
77WINDOW *
78openip(void)
79{
80
81	return (subwin(stdscr, -1, 0, 5, 0));
82}
83
84void
85closeip(WINDOW *w)
86{
87
88	if (w != NULL) {
89		wclear(w);
90		wrefresh(w);
91		delwin(w);
92	}
93}
94
95void
96labelip(void)
97{
98
99	wmove(wnd, 0, 0); wclrtoeol(wnd);
100
101	LHD(0,  "total packets received");
102	LHD(1,  "  passed to upper layers");
103	LHD(2,  "  with bad checksums");
104	LHD(3,  "  too short for header");
105	LHD(4,  "  too short for data");
106	LHD(5,  "  with invalid hlen");
107	LHD(6,  "  with invalid length");
108	LHD(7,  "  with invalid version");
109	LHD(8,  "  too large");
110	LHD(9,  "  option errors");
111	LHD(10, "  fragments received");
112	LHD(11, "  fragments dropped");
113	LHD(12, "  fragments timed out");
114	LHD(13, "  packets reassembled ok");
115
116	LHD(15, "packets forwarded");
117	LHD(16, "  fast forwarded");
118	LHD(17, "  unreachable dests");
119	LHD(18, "  redirects generated");
120
121	RHD(0,  "total packets sent");
122	RHD(1,  "  generated locally");
123	RHD(2,  "  output drops");
124	RHD(3,  "  output fragments generated");
125	RHD(4,  "  fragmentation failed");
126	RHD(5,  "  destinations unreachable");
127	RHD(6,  "  packets output via raw IP");
128	RHD(7,  "  total UDP packets sent");
129
130	RHD(9, "total UDP packets received");
131	RHD(10, "  too short for header");
132	RHD(11, "  invalid checksum");
133	RHD(12, "  invalid length");
134	RHD(13, "  no socket for dest port");
135	RHD(14, "  no socket for broadcast");
136	RHD(15, "  socket buffer full");
137}
138
139void
140showip(void)
141{
142	u_quad_t totalout;
143
144	totalout = curstat.i[IP_STAT_FORWARD] + curstat.i[IP_STAT_LOCALOUT];
145
146	SHOW(i[IP_STAT_TOTAL], 0, 0);
147	mvwprintw(wnd, 0, 35, "%9llu", (unsigned long long)totalout);
148	SHOW(i[IP_STAT_DELIVERED], 1, 0);
149	SHOW(i[IP_STAT_BADSUM], 2, 0);
150	SHOW(i[IP_STAT_TOOSHORT], 3, 0);
151	SHOW(i[IP_STAT_TOOSMALL], 4, 0);
152	SHOW(i[IP_STAT_BADHLEN], 5, 0);
153	SHOW(i[IP_STAT_BADLEN], 6, 0);
154	SHOW(i[IP_STAT_BADVERS], 7, 0);
155	SHOW(i[IP_STAT_TOOLONG], 8, 0);
156	SHOW(i[IP_STAT_BADOPTIONS], 9, 0);
157
158	SHOW(i[IP_STAT_LOCALOUT], 1, 35);
159	SHOW(i[IP_STAT_ODROPPED], 2, 35);
160	SHOW(i[IP_STAT_OFRAGMENTS], 3, 35);
161	SHOW(i[IP_STAT_CANTFRAG], 4, 35);
162	SHOW(i[IP_STAT_NOROUTE], 5, 35);
163	SHOW(i[IP_STAT_RAWOUT], 6, 35);
164	SHOW(u[UDP_STAT_OPACKETS], 7, 35);
165
166	SHOW(i[IP_STAT_FRAGMENTS], 10, 0);
167	SHOW(i[IP_STAT_FRAGDROPPED], 11, 0);
168	SHOW(i[IP_STAT_FRAGTIMEOUT], 12, 0);
169	SHOW(i[IP_STAT_REASSEMBLED], 13, 0);
170
171	SHOW(i[IP_STAT_FORWARD], 15, 0);
172	SHOW(i[IP_STAT_FASTFORWARD], 16, 0);
173	SHOW(i[IP_STAT_CANTFORWARD], 17, 0);
174	SHOW(i[IP_STAT_REDIRECTSENT], 18, 0);
175
176	SHOW(u[UDP_STAT_IPACKETS], 9, 35);
177	SHOW(u[UDP_STAT_HDROPS], 10, 35);
178	SHOW(u[UDP_STAT_BADSUM], 11, 35);
179	SHOW(u[UDP_STAT_BADLEN], 12, 35);
180	SHOW(u[UDP_STAT_NOPORT], 13, 35);
181	SHOW(u[UDP_STAT_NOPORTBCAST], 14, 35);
182	SHOW(u[UDP_STAT_FULLSOCK], 15, 35);
183}
184
185int
186initip(void)
187{
188
189	if (! use_sysctl) {
190		if (namelist[0].n_type == 0) {
191			if (kvm_nlist(kd, namelist)) {
192				nlisterr(namelist);
193				return(0);
194			}
195			if ((namelist[0].n_type | namelist[1].n_type) == 0) {
196				error("No namelist");
197				return(0);
198			}
199		}
200	}
201	return 1;
202}
203
204void
205fetchip(void)
206{
207
208	if (use_sysctl) {
209		size_t size;
210
211		size = sizeof(newstat.i);
212		if (sysctlbyname("net.inet.ip.stats", newstat.i, &size,
213				 NULL, 0) == -1)
214			return;
215		size = sizeof(newstat.u);
216		if (sysctlbyname("net.inet.udp.stats", newstat.u, &size,
217				 NULL, 0) == -1)
218			return;
219	} else {
220		KREAD((void *)namelist[0].n_value, newstat.i,
221		    sizeof(newstat.i));
222		KREAD((void *)namelist[1].n_value, newstat.u,
223		    sizeof(newstat.u));
224	}
225
226	ADJINETCTR(curstat, oldstat, newstat, i[IP_STAT_TOTAL]);
227	ADJINETCTR(curstat, oldstat, newstat, i[IP_STAT_DELIVERED]);
228	ADJINETCTR(curstat, oldstat, newstat, i[IP_STAT_BADSUM]);
229	ADJINETCTR(curstat, oldstat, newstat, i[IP_STAT_TOOSHORT]);
230	ADJINETCTR(curstat, oldstat, newstat, i[IP_STAT_TOOSMALL]);
231	ADJINETCTR(curstat, oldstat, newstat, i[IP_STAT_BADHLEN]);
232	ADJINETCTR(curstat, oldstat, newstat, i[IP_STAT_BADLEN]);
233	ADJINETCTR(curstat, oldstat, newstat, i[IP_STAT_BADVERS]);
234	ADJINETCTR(curstat, oldstat, newstat, i[IP_STAT_TOOLONG]);
235	ADJINETCTR(curstat, oldstat, newstat, i[IP_STAT_BADOPTIONS]);
236	ADJINETCTR(curstat, oldstat, newstat, i[IP_STAT_LOCALOUT]);
237	ADJINETCTR(curstat, oldstat, newstat, i[IP_STAT_ODROPPED]);
238	ADJINETCTR(curstat, oldstat, newstat, i[IP_STAT_OFRAGMENTS]);
239	ADJINETCTR(curstat, oldstat, newstat, i[IP_STAT_CANTFRAG]);
240	ADJINETCTR(curstat, oldstat, newstat, i[IP_STAT_NOROUTE]);
241	ADJINETCTR(curstat, oldstat, newstat, i[IP_STAT_RAWOUT]);
242	ADJINETCTR(curstat, oldstat, newstat, i[IP_STAT_FRAGMENTS]);
243	ADJINETCTR(curstat, oldstat, newstat, i[IP_STAT_FRAGDROPPED]);
244	ADJINETCTR(curstat, oldstat, newstat, i[IP_STAT_FRAGTIMEOUT]);
245	ADJINETCTR(curstat, oldstat, newstat, i[IP_STAT_REASSEMBLED]);
246	ADJINETCTR(curstat, oldstat, newstat, i[IP_STAT_FORWARD]);
247	ADJINETCTR(curstat, oldstat, newstat, i[IP_STAT_FASTFORWARD]);
248	ADJINETCTR(curstat, oldstat, newstat, i[IP_STAT_CANTFORWARD]);
249	ADJINETCTR(curstat, oldstat, newstat, i[IP_STAT_REDIRECTSENT]);
250	ADJINETCTR(curstat, oldstat, newstat, u[UDP_STAT_OPACKETS]);
251	ADJINETCTR(curstat, oldstat, newstat, u[UDP_STAT_IPACKETS]);
252	ADJINETCTR(curstat, oldstat, newstat, u[UDP_STAT_HDROPS]);
253	ADJINETCTR(curstat, oldstat, newstat, u[UDP_STAT_BADSUM]);
254	ADJINETCTR(curstat, oldstat, newstat, u[UDP_STAT_BADLEN]);
255	ADJINETCTR(curstat, oldstat, newstat, u[UDP_STAT_NOPORT]);
256	ADJINETCTR(curstat, oldstat, newstat, u[UDP_STAT_NOPORTBCAST]);
257	ADJINETCTR(curstat, oldstat, newstat, u[UDP_STAT_FULLSOCK]);
258
259	if (update == UPDATE_TIME)
260		memcpy(&oldstat, &newstat, sizeof(oldstat));
261}
262
263void
264ip_boot(char *args)
265{
266
267	memset(&oldstat, 0, sizeof(oldstat));
268	update = UPDATE_BOOT;
269}
270
271void
272ip_run(char *args)
273{
274
275	if (update != UPDATE_RUN) {
276		memcpy(&oldstat, &newstat, sizeof(oldstat));
277		update = UPDATE_RUN;
278	}
279}
280
281void
282ip_time(char *args)
283{
284
285	if (update != UPDATE_TIME) {
286		memcpy(&oldstat, &newstat, sizeof(oldstat));
287		update = UPDATE_TIME;
288	}
289}
290
291void
292ip_zero(char *args)
293{
294
295	if (update == UPDATE_RUN)
296		memcpy(&oldstat, &newstat, sizeof(oldstat));
297}
298