1/*	$NetBSD: tcp.c,v 1.15 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: tcp.c,v 1.15 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_var.h>
42#include <netinet/tcp.h>
43#include <netinet/tcp_timer.h>
44#include <netinet/tcp_var.h>
45
46#include <string.h>
47
48#include "systat.h"
49#include "extern.h"
50
51#define LHD(row, str)		mvwprintw(wnd, row, 10, str)
52#define RHD(row, str)		mvwprintw(wnd, row, 45, str)
53#define SHOW(row, col, stat) \
54    mvwprintw(wnd, row, col, "%9llu", (unsigned long long)curstat[stat])
55
56enum update {
57	UPDATE_TIME,
58	UPDATE_BOOT,
59	UPDATE_RUN,
60};
61
62static enum update update = UPDATE_TIME;
63static uint64_t curstat[TCP_NSTATS];
64static uint64_t newstat[TCP_NSTATS];
65static uint64_t oldstat[TCP_NSTATS];
66
67WINDOW *
68opentcp(void)
69{
70
71	return (subwin(stdscr, -1, 0, 5, 0));
72}
73
74void
75closetcp(WINDOW *w)
76{
77
78	if (w != NULL) {
79		wclear(w);
80		wrefresh(w);
81		delwin(w);
82	}
83}
84
85void
86labeltcp(void)
87{
88
89	wmove(wnd, 0, 0); wclrtoeol(wnd);
90
91	LHD(0,  "connections initiated");
92	LHD(1,  "connections accepted");
93	LHD(2,  "connections established");
94
95	LHD(4,  "connections dropped");
96	LHD(5,  "  in embryonic state");
97	LHD(6,  "  on retransmit timeout");
98	LHD(7,  "  by keepalive");
99	LHD(8,  "  by persist");
100
101	LHD(10, "potential rtt updates");
102	LHD(11, "successful rtt updates");
103	LHD(12, "delayed acks sent");
104	LHD(13, "retransmit timeouts");
105	LHD(14, "persist timeouts");
106	LHD(15, "keepalive probes");
107	LHD(16, "keepalive timeouts");
108
109	RHD(9,  "total TCP packets received");
110	RHD(10, "  in sequence");
111	RHD(11, "  completely duplicate");
112	RHD(12, "  with some duplicate data");
113	RHD(13, "  out of order");
114	RHD(14, "  duplicate acks");
115	RHD(15, "  acks");
116	RHD(16, "  window probes");
117	RHD(17, "  window updates");
118
119	RHD(0, "total TCP packets sent");
120	RHD(1, "  data");
121	RHD(2, "  data (retransmit)");
122	RHD(3, "  ack-only");
123	RHD(4, "  window probes");
124	RHD(5, "  window updates");
125	RHD(6, "  urgent data only");
126	RHD(7, "  control");
127}
128
129void
130showtcpsyn(void)
131{
132
133	SHOW(0, 0, TCP_STAT_SC_ADDED);
134	SHOW(1, 0, TCP_STAT_SC_COMPLETED);
135	SHOW(2, 0, TCP_STAT_SC_TIMED_OUT);
136	SHOW(3, 0, TCP_STAT_SC_DUPESYN);
137	SHOW(4, 0, TCP_STAT_SC_COLLISIONS);
138	SHOW(5, 0, TCP_STAT_SC_RETRANSMITTED);
139	SHOW(6, 0, TCP_STAT_SC_ABORTED);
140	SHOW(7, 0, TCP_STAT_SC_OVERFLOWED);
141	SHOW(8, 0, TCP_STAT_SC_RESET);
142	SHOW(9, 0, TCP_STAT_SC_UNREACH);
143	SHOW(10, 0, TCP_STAT_SC_BUCKETOVERFLOW);
144	SHOW(11, 0, TCP_STAT_SC_DROPPED);
145}
146
147void
148labeltcpsyn(void)
149{
150
151	wmove(wnd, 0, 0); wclrtoeol(wnd);
152	LHD(0,  "entries added");
153	LHD(1,  "connections completed");
154	LHD(2,  "entries timed out");
155	LHD(3,  "duplicate SYNs received");
156	LHD(4,  "hash collisions");
157	LHD(5,  "retransmissions");
158	LHD(6,  "entries aborted (no memory)");
159	LHD(7,  "dropped (overflow)");
160	LHD(8,  "dropped (RST)");
161	LHD(9,  "dropped (ICMP UNRCH)");
162	LHD(10,  "dropped (bucket overflow)");
163	LHD(11,  "dropped (unreachable/no memory)");
164}
165
166void
167showtcp(void)
168{
169
170	SHOW(0, 0, TCP_STAT_CONNATTEMPT);
171	SHOW(1, 0, TCP_STAT_ACCEPTS);
172	SHOW(2, 0, TCP_STAT_CONNECTS);
173
174	SHOW(4, 0, TCP_STAT_DROPS);
175	SHOW(5, 0, TCP_STAT_CONNDROPS);
176	SHOW(6, 0, TCP_STAT_TIMEOUTDROP);
177	SHOW(7, 0, TCP_STAT_KEEPDROPS);
178	SHOW(8, 0, TCP_STAT_PERSISTDROPS);
179
180	SHOW(10, 0, TCP_STAT_SEGSTIMED);
181	SHOW(11, 0, TCP_STAT_RTTUPDATED);
182	SHOW(12, 0, TCP_STAT_DELACK);
183	SHOW(13, 0, TCP_STAT_REXMTTIMEO);
184	SHOW(14, 0, TCP_STAT_PERSISTTIMEO);
185	SHOW(15, 0, TCP_STAT_KEEPPROBE);
186	SHOW(16, 0, TCP_STAT_KEEPTIMEO);
187
188	SHOW(0, 35, TCP_STAT_SNDTOTAL);
189	SHOW(1, 35, TCP_STAT_SNDPACK);
190	SHOW(2, 35, TCP_STAT_SNDREXMITPACK);
191
192	SHOW(3, 35, TCP_STAT_SNDACKS);
193	SHOW(4, 35, TCP_STAT_SNDPROBE);
194	SHOW(5, 35, TCP_STAT_SNDWINUP);
195	SHOW(6, 35, TCP_STAT_SNDURG);
196	SHOW(7, 35, TCP_STAT_SNDCTRL);
197
198	SHOW(9, 35, TCP_STAT_RCVTOTAL);
199	SHOW(10, 35, TCP_STAT_RCVPACK);
200	SHOW(11, 35, TCP_STAT_RCVDUPPACK);
201	SHOW(12, 35, TCP_STAT_RCVPARTDUPPACK);
202	SHOW(13, 35, TCP_STAT_RCVOOPACK);
203	SHOW(14, 35, TCP_STAT_RCVDUPACK);
204	SHOW(15, 35, TCP_STAT_RCVACKPACK);
205	SHOW(16, 35, TCP_STAT_RCVWINPROBE);
206	SHOW(17, 35, TCP_STAT_RCVWINUPD);
207}
208
209int
210inittcp(void)
211{
212	return 1;
213}
214
215void
216fetchtcp(void)
217{
218	size_t i, size = sizeof(newstat);
219
220	if (sysctlbyname("net.inet.tcp.stats", newstat, &size, NULL, 0) == -1)
221		return;
222
223	for (i = 0; i < TCP_NSTATS; i++)
224		xADJINETCTR(curstat, oldstat, newstat, i);
225
226	if (update == UPDATE_TIME)
227		memcpy(oldstat, newstat, sizeof(oldstat));
228}
229
230void
231tcp_boot(char *args)
232{
233
234	memset(oldstat, 0, sizeof(oldstat));
235	update = UPDATE_BOOT;
236}
237
238void
239tcp_run(char *args)
240{
241
242	if (update != UPDATE_RUN) {
243		memcpy(oldstat, newstat, sizeof(oldstat));
244		update = UPDATE_RUN;
245	}
246}
247
248void
249tcp_time(char *args)
250{
251
252	if (update != UPDATE_TIME) {
253		memcpy(oldstat, newstat, sizeof(oldstat));
254		update = UPDATE_TIME;
255	}
256}
257
258void
259tcp_zero(char *args)
260{
261
262	if (update == UPDATE_RUN)
263		memcpy(oldstat, newstat, sizeof(oldstat));
264}
265