tcp.c revision 1.12
1 /* $NetBSD: tcp.c,v 1.12 2006/10/22 16:43:24 christos 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 1.12 2006/10/22 16:43:24 christos 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 struct tcpstat curstat; 64 static struct tcpstat newstat; 65 static struct tcpstat oldstat; 66 67 static struct nlist namelist[] = { 68 { .n_name = "_tcpstat" }, 69 { .n_name = NULL } 70 }; 71 72 WINDOW * 73 opentcp(void) 74 { 75 76 return (subwin(stdscr, -1, 0, 5, 0)); 77 } 78 79 void 80 closetcp(WINDOW *w) 81 { 82 83 if (w != NULL) { 84 wclear(w); 85 wrefresh(w); 86 delwin(w); 87 } 88 } 89 90 void 91 labeltcp(void) 92 { 93 94 wmove(wnd, 0, 0); wclrtoeol(wnd); 95 96 LHD(0, "connections initiated"); 97 LHD(1, "connections accepted"); 98 LHD(2, "connections established"); 99 100 LHD(4, "connections dropped"); 101 LHD(5, " in embryonic state"); 102 LHD(6, " on retransmit timeout"); 103 LHD(7, " by keepalive"); 104 LHD(8, " by persist"); 105 106 LHD(10, "potential rtt updates"); 107 LHD(11, "successful rtt updates"); 108 LHD(12, "delayed acks sent"); 109 LHD(13, "retransmit timeouts"); 110 LHD(14, "persist timeouts"); 111 LHD(15, "keepalive probes"); 112 LHD(16, "keepalive timeouts"); 113 114 RHD(9, "total TCP packets received"); 115 RHD(10, " in sequence"); 116 RHD(11, " completely duplicate"); 117 RHD(12, " with some duplicate data"); 118 RHD(13, " out of order"); 119 RHD(14, " duplicate acks"); 120 RHD(15, " acks"); 121 RHD(16, " window probes"); 122 RHD(17, " window updates"); 123 124 RHD(0, "total TCP packets sent"); 125 RHD(1, " data"); 126 RHD(2, " data (retransmit)"); 127 RHD(3, " ack-only"); 128 RHD(4, " window probes"); 129 RHD(5, " window updates"); 130 RHD(6, " urgent data only"); 131 RHD(7, " control"); 132 } 133 134 void 135 showtcpsyn(void) 136 { 137 138 SHOW(0, 0, tcps_sc_added); 139 SHOW(1, 0, tcps_sc_completed); 140 SHOW(2, 0, tcps_sc_timed_out); 141 SHOW(3, 0, tcps_sc_dupesyn); 142 SHOW(4, 0, tcps_sc_collisions); 143 SHOW(5, 0, tcps_sc_retransmitted); 144 SHOW(6, 0, tcps_sc_aborted); 145 SHOW(7, 0, tcps_sc_overflowed); 146 SHOW(8, 0, tcps_sc_reset); 147 SHOW(9, 0, tcps_sc_unreach); 148 SHOW(10, 0, tcps_sc_bucketoverflow); 149 SHOW(11, 0, tcps_sc_dropped); 150 } 151 152 void 153 labeltcpsyn(void) 154 { 155 156 wmove(wnd, 0, 0); wclrtoeol(wnd); 157 LHD(0, "entries added"); 158 LHD(1, "connections completed"); 159 LHD(2, "entries timed out"); 160 LHD(3, "duplicate SYNs received"); 161 LHD(4, "hash collisions"); 162 LHD(5, "retransmissions"); 163 LHD(6, "entries aborted (no memory)"); 164 LHD(7, "dropped (overflow)"); 165 LHD(8, "dropped (RST)"); 166 LHD(9, "dropped (ICMP UNRCH)"); 167 LHD(10, "dropped (bucket overflow)"); 168 LHD(11, "dropped (unreachable/no memory)"); 169 } 170 171 void 172 showtcp(void) 173 { 174 175 SHOW(0, 0, tcps_connattempt); 176 SHOW(1, 0, tcps_accepts); 177 SHOW(2, 0, tcps_connects); 178 179 SHOW(4, 0, tcps_drops); 180 SHOW(5, 0, tcps_conndrops); 181 SHOW(6, 0, tcps_timeoutdrop); 182 SHOW(7, 0, tcps_keepdrops); 183 SHOW(8, 0, tcps_persistdrops); 184 185 SHOW(10, 0, tcps_segstimed); 186 SHOW(11, 0, tcps_rttupdated); 187 SHOW(12, 0, tcps_delack); 188 SHOW(13, 0, tcps_rexmttimeo); 189 SHOW(14, 0, tcps_persisttimeo); 190 SHOW(15, 0, tcps_keepprobe); 191 SHOW(16, 0, tcps_keeptimeo); 192 193 SHOW(0, 35, tcps_sndtotal); 194 SHOW(1, 35, tcps_sndpack); 195 SHOW(2, 35, tcps_sndrexmitpack); 196 197 SHOW(3, 35, tcps_sndacks); 198 SHOW(4, 35, tcps_sndprobe); 199 SHOW(5, 35, tcps_sndwinup); 200 SHOW(6, 35, tcps_sndurg); 201 SHOW(7, 35, tcps_sndctrl); 202 203 SHOW(9, 35, tcps_rcvtotal); 204 SHOW(10, 35, tcps_rcvpack); 205 SHOW(11, 35, tcps_rcvduppack); 206 SHOW(12, 35, tcps_rcvpartduppack); 207 SHOW(13, 35, tcps_rcvoopack); 208 SHOW(14, 35, tcps_rcvdupack); 209 SHOW(15, 35, tcps_rcvackpack); 210 SHOW(16, 35, tcps_rcvwinprobe); 211 SHOW(17, 35, tcps_rcvwinupd); 212 } 213 214 int 215 inittcp(void) 216 { 217 218 if (namelist[0].n_type == 0) { 219 if (kvm_nlist(kd, namelist)) { 220 nlisterr(namelist); 221 return(0); 222 } 223 if (namelist[0].n_type == 0) { 224 error("No namelist"); 225 return(0); 226 } 227 } 228 return 1; 229 } 230 231 void 232 fetchtcp(void) 233 { 234 235 KREAD((void *)namelist[0].n_value, &newstat, sizeof(newstat)); 236 237 ADJINETCTR(curstat, oldstat, newstat, tcps_connattempt); 238 ADJINETCTR(curstat, oldstat, newstat, tcps_accepts); 239 ADJINETCTR(curstat, oldstat, newstat, tcps_connects); 240 ADJINETCTR(curstat, oldstat, newstat, tcps_drops); 241 ADJINETCTR(curstat, oldstat, newstat, tcps_conndrops); 242 ADJINETCTR(curstat, oldstat, newstat, tcps_timeoutdrop); 243 ADJINETCTR(curstat, oldstat, newstat, tcps_keepdrops); 244 ADJINETCTR(curstat, oldstat, newstat, tcps_persistdrops); 245 ADJINETCTR(curstat, oldstat, newstat, tcps_segstimed); 246 ADJINETCTR(curstat, oldstat, newstat, tcps_rttupdated); 247 ADJINETCTR(curstat, oldstat, newstat, tcps_delack); 248 ADJINETCTR(curstat, oldstat, newstat, tcps_rexmttimeo); 249 ADJINETCTR(curstat, oldstat, newstat, tcps_persisttimeo); 250 ADJINETCTR(curstat, oldstat, newstat, tcps_keepprobe); 251 ADJINETCTR(curstat, oldstat, newstat, tcps_keeptimeo); 252 ADJINETCTR(curstat, oldstat, newstat, tcps_sndtotal); 253 ADJINETCTR(curstat, oldstat, newstat, tcps_sndpack); 254 ADJINETCTR(curstat, oldstat, newstat, tcps_sndrexmitpack); 255 ADJINETCTR(curstat, oldstat, newstat, tcps_sndacks); 256 ADJINETCTR(curstat, oldstat, newstat, tcps_sndprobe); 257 ADJINETCTR(curstat, oldstat, newstat, tcps_sndwinup); 258 ADJINETCTR(curstat, oldstat, newstat, tcps_sndurg); 259 ADJINETCTR(curstat, oldstat, newstat, tcps_sndctrl); 260 ADJINETCTR(curstat, oldstat, newstat, tcps_rcvtotal); 261 ADJINETCTR(curstat, oldstat, newstat, tcps_rcvpack); 262 ADJINETCTR(curstat, oldstat, newstat, tcps_rcvduppack); 263 ADJINETCTR(curstat, oldstat, newstat, tcps_rcvpartduppack); 264 ADJINETCTR(curstat, oldstat, newstat, tcps_rcvoopack); 265 ADJINETCTR(curstat, oldstat, newstat, tcps_rcvdupack); 266 ADJINETCTR(curstat, oldstat, newstat, tcps_rcvackpack); 267 ADJINETCTR(curstat, oldstat, newstat, tcps_rcvwinprobe); 268 ADJINETCTR(curstat, oldstat, newstat, tcps_rcvwinupd); 269 270 if (update == UPDATE_TIME) 271 memcpy(&oldstat, &newstat, sizeof(oldstat)); 272 } 273 274 void 275 tcp_boot(char *args) 276 { 277 278 memset(&oldstat, 0, sizeof(oldstat)); 279 update = UPDATE_BOOT; 280 } 281 282 void 283 tcp_run(char *args) 284 { 285 286 if (update != UPDATE_RUN) { 287 memcpy(&oldstat, &newstat, sizeof(oldstat)); 288 update = UPDATE_RUN; 289 } 290 } 291 292 void 293 tcp_time(char *args) 294 { 295 296 if (update != UPDATE_TIME) { 297 memcpy(&oldstat, &newstat, sizeof(oldstat)); 298 update = UPDATE_TIME; 299 } 300 } 301 302 void 303 tcp_zero(char *args) 304 { 305 306 if (update == UPDATE_RUN) 307 memcpy(&oldstat, &newstat, sizeof(oldstat)); 308 } 309
Indexes created Tue Sep 30 10:09:55 GMT 2025