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 (at) 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 * 68 opentcp(void) 69 { 70 71 return (subwin(stdscr, -1, 0, 5, 0)); 72 } 73 74 void 75 closetcp(WINDOW *w) 76 { 77 78 if (w != NULL) { 79 wclear(w); 80 wrefresh(w); 81 delwin(w); 82 } 83 } 84 85 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 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 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 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 210 inittcp(void) 211 { 212 return 1; 213 } 214 215 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 231 tcp_boot(char *args) 232 { 233 234 memset(oldstat, 0, sizeof(oldstat)); 235 update = UPDATE_BOOT; 236 } 237 238 void 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 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 259 tcp_zero(char *args) 260 { 261 262 if (update == UPDATE_RUN) 263 memcpy(oldstat, newstat, sizeof(oldstat)); 264 } 265
Indexes created Sat Sep 20 22:09:52 GMT 2025