tcp.c revision 1.10
1 /* $NetBSD: tcp.c,v 1.10 2003/02/24 10:10:00 dsl 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 1.10 2003/02/24 10:10:00 dsl 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 <kvm.h> 47 #include <string.h> 48 49 #include "systat.h" 50 #include "extern.h" 51 52 #define LHD(row, str) mvwprintw(wnd, row, 10, str) 53 #define RHD(row, str) mvwprintw(wnd, row, 45, str) 54 #define SHOW(row, col, stat) \ 55 mvwprintw(wnd, row, col, "%9llu", (unsigned long long)curstat.stat) 56 57 enum update { 58 UPDATE_TIME, 59 UPDATE_BOOT, 60 UPDATE_RUN, 61 }; 62 63 static enum update update = UPDATE_TIME; 64 static struct tcpstat curstat; 65 static struct tcpstat newstat; 66 static struct tcpstat oldstat; 67 68 static struct nlist namelist[] = { 69 { "_tcpstat" }, 70 { "" } 71 }; 72 73 WINDOW * 74 opentcp(void) 75 { 76 77 return (subwin(stdscr, -1, 0, 5, 0)); 78 } 79 80 void 81 closetcp(WINDOW *w) 82 { 83 84 if (w != NULL) { 85 wclear(w); 86 wrefresh(w); 87 delwin(w); 88 } 89 } 90 91 void 92 labeltcp(void) 93 { 94 95 wmove(wnd, 0, 0); wclrtoeol(wnd); 96 97 LHD(0, "connections initiated"); 98 LHD(1, "connections accepted"); 99 LHD(2, "connections established"); 100 101 LHD(4, "connections dropped"); 102 LHD(5, " in embryonic state"); 103 LHD(6, " on retransmit timeout"); 104 LHD(7, " by keepalive"); 105 LHD(8, " by persist"); 106 107 LHD(10, "potential rtt updates"); 108 LHD(11, "successful rtt updates"); 109 LHD(12, "delayed acks sent"); 110 LHD(13, "retransmit timeouts"); 111 LHD(14, "persist timeouts"); 112 LHD(15, "keepalive probes"); 113 LHD(16, "keepalive timeouts"); 114 115 RHD(9, "total TCP packets received"); 116 RHD(10, " in sequence"); 117 RHD(11, " completely duplicate"); 118 RHD(12, " with some duplicate data"); 119 RHD(13, " out of order"); 120 RHD(14, " duplicate acks"); 121 RHD(15, " acks"); 122 RHD(16, " window probes"); 123 RHD(17, " window updates"); 124 125 RHD(0, "total TCP packets sent"); 126 RHD(1, " data"); 127 RHD(2, " data (retransmit)"); 128 RHD(3, " ack-only"); 129 RHD(4, " window probes"); 130 RHD(5, " window updates"); 131 RHD(6, " urgent data only"); 132 RHD(7, " control"); 133 } 134 135 void 136 showtcpsyn(void) 137 { 138 139 SHOW(0, 0, tcps_sc_added); 140 SHOW(1, 0, tcps_sc_completed); 141 SHOW(2, 0, tcps_sc_timed_out); 142 SHOW(3, 0, tcps_sc_dupesyn); 143 SHOW(4, 0, tcps_sc_collisions); 144 SHOW(5, 0, tcps_sc_retransmitted); 145 SHOW(6, 0, tcps_sc_aborted); 146 SHOW(7, 0, tcps_sc_overflowed); 147 SHOW(8, 0, tcps_sc_reset); 148 SHOW(9, 0, tcps_sc_unreach); 149 SHOW(10, 0, tcps_sc_bucketoverflow); 150 SHOW(11, 0, tcps_sc_dropped); 151 } 152 153 void 154 labeltcpsyn(void) 155 { 156 157 wmove(wnd, 0, 0); wclrtoeol(wnd); 158 LHD(0, "entries added"); 159 LHD(1, "connections completed"); 160 LHD(2, "entries timed out"); 161 LHD(3, "duplicate SYNs received"); 162 LHD(4, "hash collisions"); 163 LHD(5, "retransmissions"); 164 LHD(6, "entries aborted (no memory)"); 165 LHD(7, "dropped (overflow)"); 166 LHD(8, "dropped (RST)"); 167 LHD(9, "dropped (ICMP UNRCH)"); 168 LHD(10, "dropped (bucket overflow)"); 169 LHD(11, "dropped (unreachable/no memory)"); 170 } 171 172 void 173 showtcp(void) 174 { 175 176 SHOW(0, 0, tcps_connattempt); 177 SHOW(1, 0, tcps_accepts); 178 SHOW(2, 0, tcps_connects); 179 180 SHOW(4, 0, tcps_drops); 181 SHOW(5, 0, tcps_conndrops); 182 SHOW(6, 0, tcps_timeoutdrop); 183 SHOW(7, 0, tcps_keepdrops); 184 SHOW(8, 0, tcps_persistdrops); 185 186 SHOW(10, 0, tcps_segstimed); 187 SHOW(11, 0, tcps_rttupdated); 188 SHOW(12, 0, tcps_delack); 189 SHOW(13, 0, tcps_rexmttimeo); 190 SHOW(14, 0, tcps_persisttimeo); 191 SHOW(15, 0, tcps_keepprobe); 192 SHOW(16, 0, tcps_keeptimeo); 193 194 SHOW(0, 35, tcps_sndtotal); 195 SHOW(1, 35, tcps_sndpack); 196 SHOW(2, 35, tcps_sndrexmitpack); 197 198 SHOW(3, 35, tcps_sndacks); 199 SHOW(4, 35, tcps_sndprobe); 200 SHOW(5, 35, tcps_sndwinup); 201 SHOW(6, 35, tcps_sndurg); 202 SHOW(7, 35, tcps_sndctrl); 203 204 SHOW(9, 35, tcps_rcvtotal); 205 SHOW(10, 35, tcps_rcvpack); 206 SHOW(11, 35, tcps_rcvduppack); 207 SHOW(12, 35, tcps_rcvpartduppack); 208 SHOW(13, 35, tcps_rcvoopack); 209 SHOW(14, 35, tcps_rcvdupack); 210 SHOW(15, 35, tcps_rcvackpack); 211 SHOW(16, 35, tcps_rcvwinprobe); 212 SHOW(17, 35, tcps_rcvwinupd); 213 } 214 215 int 216 inittcp(void) 217 { 218 219 if (namelist[0].n_type == 0) { 220 if (kvm_nlist(kd, namelist)) { 221 nlisterr(namelist); 222 return(0); 223 } 224 if (namelist[0].n_type == 0) { 225 error("No namelist"); 226 return(0); 227 } 228 } 229 return 1; 230 } 231 232 void 233 fetchtcp(void) 234 { 235 236 KREAD((void *)namelist[0].n_value, &newstat, sizeof(newstat)); 237 238 ADJINETCTR(curstat, oldstat, newstat, tcps_connattempt); 239 ADJINETCTR(curstat, oldstat, newstat, tcps_accepts); 240 ADJINETCTR(curstat, oldstat, newstat, tcps_connects); 241 ADJINETCTR(curstat, oldstat, newstat, tcps_drops); 242 ADJINETCTR(curstat, oldstat, newstat, tcps_conndrops); 243 ADJINETCTR(curstat, oldstat, newstat, tcps_timeoutdrop); 244 ADJINETCTR(curstat, oldstat, newstat, tcps_keepdrops); 245 ADJINETCTR(curstat, oldstat, newstat, tcps_persistdrops); 246 ADJINETCTR(curstat, oldstat, newstat, tcps_segstimed); 247 ADJINETCTR(curstat, oldstat, newstat, tcps_rttupdated); 248 ADJINETCTR(curstat, oldstat, newstat, tcps_delack); 249 ADJINETCTR(curstat, oldstat, newstat, tcps_rexmttimeo); 250 ADJINETCTR(curstat, oldstat, newstat, tcps_persisttimeo); 251 ADJINETCTR(curstat, oldstat, newstat, tcps_keepprobe); 252 ADJINETCTR(curstat, oldstat, newstat, tcps_keeptimeo); 253 ADJINETCTR(curstat, oldstat, newstat, tcps_sndtotal); 254 ADJINETCTR(curstat, oldstat, newstat, tcps_sndpack); 255 ADJINETCTR(curstat, oldstat, newstat, tcps_sndrexmitpack); 256 ADJINETCTR(curstat, oldstat, newstat, tcps_sndacks); 257 ADJINETCTR(curstat, oldstat, newstat, tcps_sndprobe); 258 ADJINETCTR(curstat, oldstat, newstat, tcps_sndwinup); 259 ADJINETCTR(curstat, oldstat, newstat, tcps_sndurg); 260 ADJINETCTR(curstat, oldstat, newstat, tcps_sndctrl); 261 ADJINETCTR(curstat, oldstat, newstat, tcps_rcvtotal); 262 ADJINETCTR(curstat, oldstat, newstat, tcps_rcvpack); 263 ADJINETCTR(curstat, oldstat, newstat, tcps_rcvduppack); 264 ADJINETCTR(curstat, oldstat, newstat, tcps_rcvpartduppack); 265 ADJINETCTR(curstat, oldstat, newstat, tcps_rcvoopack); 266 ADJINETCTR(curstat, oldstat, newstat, tcps_rcvdupack); 267 ADJINETCTR(curstat, oldstat, newstat, tcps_rcvackpack); 268 ADJINETCTR(curstat, oldstat, newstat, tcps_rcvwinprobe); 269 ADJINETCTR(curstat, oldstat, newstat, tcps_rcvwinupd); 270 271 if (update == UPDATE_TIME) 272 memcpy(&oldstat, &newstat, sizeof(oldstat)); 273 } 274 275 void 276 tcp_boot(char *args) 277 { 278 279 memset(&oldstat, 0, sizeof(oldstat)); 280 update = UPDATE_BOOT; 281 } 282 283 void 284 tcp_run(char *args) 285 { 286 287 if (update != UPDATE_RUN) { 288 memcpy(&oldstat, &newstat, sizeof(oldstat)); 289 update = UPDATE_RUN; 290 } 291 } 292 293 void 294 tcp_time(char *args) 295 { 296 297 if (update != UPDATE_TIME) { 298 memcpy(&oldstat, &newstat, sizeof(oldstat)); 299 update = UPDATE_TIME; 300 } 301 } 302 303 void 304 tcp_zero(char *args) 305 { 306 307 if (update == UPDATE_RUN) 308 memcpy(&oldstat, &newstat, sizeof(oldstat)); 309 } 310
Indexes created Tue Sep 30 11:09:46 GMT 2025