tcp.c revision 1.7
1 /* $NetBSD: tcp.c,v 1.7 2000/07/05 11:03:23 ad 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 1.7 2000/07/05 11:03:23 ad Exp $"); 33 #endif /* not lint */ 34 35 #include <sys/param.h> 36 #include <sys/types.h> 37 #include <sys/socket.h> 38 #include <sys/sysctl.h> 39 40 #include <netinet/in.h> 41 #include <netinet/in_systm.h> 42 #include <netinet/ip.h> 43 #include <netinet/ip_var.h> 44 #include <netinet/tcp.h> 45 #include <netinet/tcp_seq.h> 46 #include <netinet/tcp_fsm.h> 47 #include <netinet/tcp_timer.h> 48 #include <netinet/tcp_var.h> 49 50 #include <stdlib.h> 51 #include <string.h> 52 #include <paths.h> 53 #include <nlist.h> 54 #include <kvm.h> 55 56 #include "systat.h" 57 #include "extern.h" 58 59 #define LHD(row, str) mvwprintw(wnd, row, 10, str) 60 #define RHD(row, str) mvwprintw(wnd, row, 45, str) 61 #define SHOW(row, col, stat) \ 62 mvwprintw(wnd, row, col, "%9llu", (unsigned long long)curstat.stat) 63 64 enum update { 65 UPDATE_TIME, 66 UPDATE_BOOT, 67 UPDATE_RUN, 68 }; 69 70 static enum update update = UPDATE_TIME; 71 static struct tcpstat curstat; 72 static struct tcpstat newstat; 73 static struct tcpstat oldstat; 74 75 static struct nlist namelist[] = { 76 { "_tcpstat" }, 77 { "" } 78 }; 79 80 WINDOW * 81 opentcp(void) 82 { 83 84 return (subwin(stdscr, LINES-5-1, 0, 5, 0)); 85 } 86 87 void 88 closetcp(WINDOW *w) 89 { 90 91 if (w != NULL) { 92 wclear(w); 93 wrefresh(w); 94 delwin(w); 95 } 96 } 97 98 void 99 labeltcp(void) 100 { 101 102 wmove(wnd, 0, 0); wclrtoeol(wnd); 103 104 LHD(0, "connections initiated"); 105 LHD(1, "connections accepted"); 106 LHD(2, "connections established"); 107 108 LHD(4, "connections dropped"); 109 LHD(5, " in embryonic state"); 110 LHD(6, " on retransmit timeout"); 111 LHD(7, " by keepalive"); 112 LHD(8, " by persist"); 113 114 LHD(10, "potential rtt updates"); 115 LHD(11, "successful rtt updates"); 116 LHD(12, "delayed acks sent"); 117 LHD(13, "retransmit timeouts"); 118 LHD(14, "persist timeouts"); 119 LHD(15, "keepalive probes"); 120 LHD(16, "keepalive timeouts"); 121 122 RHD(9, "total TCP packets received"); 123 RHD(10, " in sequence"); 124 RHD(11, " completely duplicate"); 125 RHD(12, " with some duplicate data"); 126 RHD(13, " out of order"); 127 RHD(14, " duplicate acks"); 128 RHD(15, " acks"); 129 RHD(16, " window probes"); 130 RHD(17, " window updates"); 131 132 RHD(0, "total TCP packets sent"); 133 RHD(1, " data"); 134 RHD(2, " data (retransmit)"); 135 RHD(3, " ack-only"); 136 RHD(4, " window probes"); 137 RHD(5, " window updates"); 138 RHD(6, " urgent data only"); 139 RHD(7, " control"); 140 } 141 142 void 143 showtcpsyn(void) 144 { 145 146 SHOW(0, 0, tcps_sc_added); 147 SHOW(1, 0, tcps_sc_completed); 148 SHOW(2, 0, tcps_sc_timed_out); 149 SHOW(3, 0, tcps_sc_dupesyn); 150 SHOW(4, 0, tcps_sc_collisions); 151 SHOW(5, 0, tcps_sc_retransmitted); 152 SHOW(6, 0, tcps_sc_aborted); 153 SHOW(7, 0, tcps_sc_overflowed); 154 SHOW(8, 0, tcps_sc_reset); 155 SHOW(9, 0, tcps_sc_unreach); 156 SHOW(10, 0, tcps_sc_bucketoverflow); 157 SHOW(11, 0, tcps_sc_dropped); 158 } 159 160 void 161 labeltcpsyn(void) 162 { 163 164 wmove(wnd, 0, 0); wclrtoeol(wnd); 165 LHD(0, "entries added"); 166 LHD(1, "connections completed"); 167 LHD(2, "entries timed out"); 168 LHD(3, "duplicate SYNs recieved"); 169 LHD(4, "hash collisions"); 170 LHD(5, "retransmissions"); 171 LHD(6, "entries aborted (no memory)"); 172 LHD(7, "dropped (overflow)"); 173 LHD(8, "dropped (RST)"); 174 LHD(9, "dropped (ICMP UNRCH)"); 175 LHD(10, "dropped (bucket overflow)"); 176 LHD(11, "dropped (unreachable/no memory)"); 177 } 178 179 void 180 showtcp(void) 181 { 182 183 SHOW(0, 0, tcps_connattempt); 184 SHOW(1, 0, tcps_accepts); 185 SHOW(2, 0, tcps_connects); 186 187 SHOW(4, 0, tcps_drops); 188 SHOW(5, 0, tcps_conndrops); 189 SHOW(6, 0, tcps_timeoutdrop); 190 SHOW(7, 0, tcps_keepdrops); 191 SHOW(8, 0, tcps_persistdrops); 192 193 SHOW(10, 0, tcps_segstimed); 194 SHOW(11, 0, tcps_rttupdated); 195 SHOW(12, 0, tcps_delack); 196 SHOW(13, 0, tcps_rexmttimeo); 197 SHOW(14, 0, tcps_persisttimeo); 198 SHOW(15, 0, tcps_keepprobe); 199 SHOW(16, 0, tcps_keeptimeo); 200 201 SHOW(0, 35, tcps_sndtotal); 202 SHOW(1, 35, tcps_sndpack); 203 SHOW(2, 35, tcps_sndrexmitpack); 204 205 SHOW(3, 35, tcps_sndacks); 206 SHOW(4, 35, tcps_sndprobe); 207 SHOW(5, 35, tcps_sndwinup); 208 SHOW(6, 35, tcps_sndurg); 209 SHOW(7, 35, tcps_sndctrl); 210 211 SHOW(9, 35, tcps_rcvtotal); 212 SHOW(10, 35, tcps_rcvpack); 213 SHOW(11, 35, tcps_rcvduppack); 214 SHOW(12, 35, tcps_rcvpartduppack); 215 SHOW(13, 35, tcps_rcvoopack); 216 SHOW(14, 35, tcps_rcvdupack); 217 SHOW(15, 35, tcps_rcvackpack); 218 SHOW(16, 35, tcps_rcvwinprobe); 219 SHOW(17, 35, tcps_rcvwinupd); 220 } 221 222 int 223 inittcp(void) 224 { 225 226 if (namelist[0].n_type == 0) { 227 if (kvm_nlist(kd, namelist)) { 228 nlisterr(namelist); 229 return(0); 230 } 231 if (namelist[0].n_type == 0) { 232 error("No namelist"); 233 return(0); 234 } 235 } 236 return 1; 237 } 238 239 void 240 fetchtcp(void) 241 { 242 243 KREAD((void *)namelist[0].n_value, &newstat, sizeof(newstat)); 244 245 ADJINETCTR(curstat, oldstat, newstat, tcps_connattempt); 246 ADJINETCTR(curstat, oldstat, newstat, tcps_accepts); 247 ADJINETCTR(curstat, oldstat, newstat, tcps_connects); 248 ADJINETCTR(curstat, oldstat, newstat, tcps_drops); 249 ADJINETCTR(curstat, oldstat, newstat, tcps_conndrops); 250 ADJINETCTR(curstat, oldstat, newstat, tcps_timeoutdrop); 251 ADJINETCTR(curstat, oldstat, newstat, tcps_keepdrops); 252 ADJINETCTR(curstat, oldstat, newstat, tcps_persistdrops); 253 ADJINETCTR(curstat, oldstat, newstat, tcps_segstimed); 254 ADJINETCTR(curstat, oldstat, newstat, tcps_rttupdated); 255 ADJINETCTR(curstat, oldstat, newstat, tcps_delack); 256 ADJINETCTR(curstat, oldstat, newstat, tcps_rexmttimeo); 257 ADJINETCTR(curstat, oldstat, newstat, tcps_persisttimeo); 258 ADJINETCTR(curstat, oldstat, newstat, tcps_keepprobe); 259 ADJINETCTR(curstat, oldstat, newstat, tcps_keeptimeo); 260 ADJINETCTR(curstat, oldstat, newstat, tcps_sndtotal); 261 ADJINETCTR(curstat, oldstat, newstat, tcps_sndpack); 262 ADJINETCTR(curstat, oldstat, newstat, tcps_sndrexmitpack); 263 ADJINETCTR(curstat, oldstat, newstat, tcps_sndacks); 264 ADJINETCTR(curstat, oldstat, newstat, tcps_sndprobe); 265 ADJINETCTR(curstat, oldstat, newstat, tcps_sndwinup); 266 ADJINETCTR(curstat, oldstat, newstat, tcps_sndurg); 267 ADJINETCTR(curstat, oldstat, newstat, tcps_sndctrl); 268 ADJINETCTR(curstat, oldstat, newstat, tcps_rcvtotal); 269 ADJINETCTR(curstat, oldstat, newstat, tcps_rcvpack); 270 ADJINETCTR(curstat, oldstat, newstat, tcps_rcvduppack); 271 ADJINETCTR(curstat, oldstat, newstat, tcps_rcvpartduppack); 272 ADJINETCTR(curstat, oldstat, newstat, tcps_rcvoopack); 273 ADJINETCTR(curstat, oldstat, newstat, tcps_rcvdupack); 274 ADJINETCTR(curstat, oldstat, newstat, tcps_rcvackpack); 275 ADJINETCTR(curstat, oldstat, newstat, tcps_rcvwinprobe); 276 ADJINETCTR(curstat, oldstat, newstat, tcps_rcvwinupd); 277 278 if (update == UPDATE_TIME) 279 memcpy(&oldstat, &newstat, sizeof(oldstat)); 280 } 281 282 void 283 tcp_boot(char *args) 284 { 285 286 memset(&oldstat, 0, sizeof(oldstat)); 287 update = UPDATE_BOOT; 288 } 289 290 void 291 tcp_run(char *args) 292 { 293 294 if (update != UPDATE_RUN) { 295 memcpy(&oldstat, &newstat, sizeof(oldstat)); 296 update = UPDATE_RUN; 297 } 298 } 299 300 void 301 tcp_time(char *args) 302 { 303 304 if (update != UPDATE_TIME) { 305 memcpy(&oldstat, &newstat, sizeof(oldstat)); 306 update = UPDATE_TIME; 307 } 308 } 309 310 void 311 tcp_zero(char *args) 312 { 313 314 if (update == UPDATE_RUN) 315 memcpy(&oldstat, &newstat, sizeof(oldstat)); 316 } 317
Indexes created Tue Sep 30 11:09:46 GMT 2025