1 /* $NetBSD: tcp.c,v 1.16 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: tcp.c,v 1.16 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_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
56 enum update {
57 UPDATE_TIME,
58 UPDATE_BOOT,
59 UPDATE_RUN,
60 };
61
62 static enum update update = UPDATE_TIME;
63 static uint64_t curstat[TCP_NSTATS];
64 static uint64_t newstat[TCP_NSTATS];
65 static uint64_t oldstat[TCP_NSTATS];
66
67 WINDOW *
opentcp(void)68 opentcp(void)
69 {
70
71 return (subwin(stdscr, -1, 0, 5, 0));
72 }
73
74 void
closetcp(WINDOW * w)75 closetcp(WINDOW *w)
76 {
77
78 if (w != NULL) {
79 wclear(w);
80 wrefresh(w);
81 delwin(w);
82 }
83 }
84
85 void
labeltcp(void)86 labeltcp(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
129 void
showtcpsyn(void)130 showtcpsyn(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
147 void
labeltcpsyn(void)148 labeltcpsyn(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
166 void
showtcp(void)167 showtcp(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
209 int
inittcp(void)210 inittcp(void)
211 {
212 return 1;
213 }
214
215 void
fetchtcp(void)216 fetchtcp(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
230 void
tcp_boot(char * args)231 tcp_boot(char *args)
232 {
233
234 memset(oldstat, 0, sizeof(oldstat));
235 update = UPDATE_BOOT;
236 }
237
238 void
tcp_run(char * args)239 tcp_run(char *args)
240 {
241
242 if (update != UPDATE_RUN) {
243 memcpy(oldstat, newstat, sizeof(oldstat));
244 update = UPDATE_RUN;
245 }
246 }
247
248 void
tcp_time(char * args)249 tcp_time(char *args)
250 {
251
252 if (update != UPDATE_TIME) {
253 memcpy(oldstat, newstat, sizeof(oldstat));
254 update = UPDATE_TIME;
255 }
256 }
257
258 void
tcp_zero(char * args)259 tcp_zero(char *args)
260 {
261
262 if (update == UPDATE_RUN)
263 memcpy(oldstat, newstat, sizeof(oldstat));
264 }
265