1 /*- 2 * Copyright (c) 1980, 1992, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. All advertising materials mentioning features or use of this software 14 * must display the following acknowledgement: 15 * This product includes software developed by the University of 16 * California, Berkeley and its contributors. 17 * 4. Neither the name of the University nor the names of its contributors 18 * may be used to endorse or promote products derived from this software 19 * without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 * 33 * @(#)mbufs.c 8.1 (Berkeley) 6/6/93 34 * $FreeBSD: src/usr.bin/systat/tcp.c,v 1.3 1999/08/28 01:06:06 peter Exp $ 35 * $DragonFly: src/usr.bin/systat/tcp.c,v 1.2 2003/06/17 04:29:32 dillon Exp $ 36 */ 37 38 #include <sys/param.h> 39 #include <sys/types.h> 40 #include <sys/socket.h> 41 #include <sys/sysctl.h> 42 43 #include <netinet/in.h> 44 #include <netinet/in_systm.h> 45 #include <netinet/ip.h> 46 #include <netinet/tcp.h> 47 #include <netinet/tcp_seq.h> 48 #include <netinet/tcp_fsm.h> 49 #include <netinet/tcp_timer.h> 50 #include <netinet/tcp_var.h> 51 52 #include <stdlib.h> 53 #include <string.h> 54 #include <paths.h> 55 #include "systat.h" 56 #include "extern.h" 57 #include "mode.h" 58 59 static struct tcpstat curstat, initstat, oldstat; 60 61 /*- 62 --0 1 2 3 4 5 6 7 63 --0123456789012345678901234567890123456789012345678901234567890123456789012345 64 01 TCP Connections TCP Packets 65 02999999999 connections initiated 999999999 total packets sent 66 03999999999 connections accepted 999999999 - data 67 04999999999 connections established 999999999 - data (retransmit) 68 05999999999 connections dropped 999999999 - ack-only 69 06999999999 - in embryonic state 999999999 - window probes 70 07999999999 - on retransmit timeout 999999999 - window updates 71 08999999999 - by keepalive 999999999 - urgent data only 72 09999999999 - from listen queue 999999999 - control 73 10 999999999 - resends by PMTU discovery 74 11 TCP Timers 999999999 total packets received 75 12999999999 potential rtt updates 999999999 - in sequence 76 13999999999 - successful 999999999 - completely duplicate 77 14999999999 delayed acks sent 999999999 - with some duplicate data 78 15999999999 retransmit timeouts 999999999 - out-of-order 79 16999999999 persist timeouts 999999999 - duplicate acks 80 17999999999 keepalive probes 999999999 - acks 81 18999999999 - timeouts 999999999 - window probes 82 19 999999999 - window updates 83 --0123456789012345678901234567890123456789012345678901234567890123456789012345 84 --0 1 2 3 4 5 6 7 85 */ 86 87 WINDOW * 88 opentcp(void) 89 { 90 return (subwin(stdscr, LINES-5-1, 0, 5, 0)); 91 } 92 93 void 94 closetcp(w) 95 WINDOW *w; 96 { 97 if (w == NULL) 98 return; 99 wclear(w); 100 wrefresh(w); 101 delwin(w); 102 } 103 104 void 105 labeltcp(void) 106 { 107 wmove(wnd, 0, 0); wclrtoeol(wnd); 108 #define L(row, str) mvwprintw(wnd, row, 10, str) 109 #define R(row, str) mvwprintw(wnd, row, 45, str); 110 L(1, "TCP Connections"); R(1, "TCP Packets"); 111 L(2, "connections initiated"); R(2, "total packets sent"); 112 L(3, "connections accepted"); R(3, "- data"); 113 L(4, "connections established"); R(4, "- data (retransmit)"); 114 L(5, "connections dropped"); R(5, "- ack-only"); 115 L(6, "- in embryonic state"); R(6, "- window probes"); 116 L(7, "- on retransmit timeout"); R(7, "- window updates"); 117 L(8, "- by keepalive"); R(8, "- urgent data only"); 118 L(9, "- from listen queue"); R(9, "- control"); 119 R(10, "- resends by PMTU discovery"); 120 L(11, "TCP Timers"); R(11, "total packets received"); 121 L(12, "potential rtt updates"); R(12, "- in sequence"); 122 L(13, "- successful"); R(13, "- completely duplicate"); 123 L(14, "delayed acks sent"); R(14, "- with some duplicate data"); 124 L(15, "retransmit timeouts"); R(15, "- out-of-order"); 125 L(16, "persist timeouts"); R(16, "- duplicate acks"); 126 L(17, "keepalive probes"); R(17, "- acks"); 127 L(18, "- timeouts"); R(18, "- window probes"); 128 R(19, "- window updates"); 129 #undef L 130 #undef R 131 } 132 133 static void 134 domode(struct tcpstat *ret) 135 { 136 const struct tcpstat *sub; 137 int divisor = 1; 138 139 switch(currentmode) { 140 case display_RATE: 141 sub = &oldstat; 142 divisor = naptime; 143 break; 144 case display_DELTA: 145 sub = &oldstat; 146 break; 147 case display_SINCE: 148 sub = &initstat; 149 break; 150 default: 151 *ret = curstat; 152 return; 153 } 154 #define DO(stat) ret->stat = (curstat.stat - sub->stat) / divisor 155 DO(tcps_connattempt); 156 DO(tcps_accepts); 157 DO(tcps_connects); 158 DO(tcps_drops); 159 DO(tcps_conndrops); 160 DO(tcps_closed); 161 DO(tcps_segstimed); 162 DO(tcps_rttupdated); 163 DO(tcps_delack); 164 DO(tcps_timeoutdrop); 165 DO(tcps_rexmttimeo); 166 DO(tcps_persisttimeo); 167 DO(tcps_keeptimeo); 168 DO(tcps_keepprobe); 169 DO(tcps_keepdrops); 170 171 DO(tcps_sndtotal); 172 DO(tcps_sndpack); 173 DO(tcps_sndbyte); 174 DO(tcps_sndrexmitpack); 175 DO(tcps_sndrexmitbyte); 176 DO(tcps_sndacks); 177 DO(tcps_sndprobe); 178 DO(tcps_sndurg); 179 DO(tcps_sndwinup); 180 DO(tcps_sndctrl); 181 182 DO(tcps_rcvtotal); 183 DO(tcps_rcvpack); 184 DO(tcps_rcvbyte); 185 DO(tcps_rcvbadsum); 186 DO(tcps_rcvbadoff); 187 DO(tcps_rcvshort); 188 DO(tcps_rcvduppack); 189 DO(tcps_rcvdupbyte); 190 DO(tcps_rcvpartduppack); 191 DO(tcps_rcvpartdupbyte); 192 DO(tcps_rcvoopack); 193 DO(tcps_rcvoobyte); 194 DO(tcps_rcvpackafterwin); 195 DO(tcps_rcvbyteafterwin); 196 DO(tcps_rcvafterclose); 197 DO(tcps_rcvwinprobe); 198 DO(tcps_rcvdupack); 199 DO(tcps_rcvacktoomuch); 200 DO(tcps_rcvackpack); 201 DO(tcps_rcvackbyte); 202 DO(tcps_rcvwinupd); 203 DO(tcps_pawsdrop); 204 DO(tcps_predack); 205 DO(tcps_preddat); 206 DO(tcps_pcbcachemiss); 207 DO(tcps_cachedrtt); 208 DO(tcps_cachedrttvar); 209 DO(tcps_cachedssthresh); 210 DO(tcps_usedrtt); 211 DO(tcps_usedrttvar); 212 DO(tcps_usedssthresh); 213 DO(tcps_persistdrop); 214 DO(tcps_badsyn); 215 DO(tcps_mturesent); 216 DO(tcps_listendrop); 217 #undef DO 218 } 219 220 void 221 showtcp(void) 222 { 223 struct tcpstat stats; 224 225 memset(&stats, 0, sizeof stats); 226 domode(&stats); 227 228 #define DO(stat, row, col) \ 229 mvwprintw(wnd, row, col, "%9lu", stats.stat) 230 #define L(row, stat) DO(stat, row, 0) 231 #define R(row, stat) DO(stat, row, 35) 232 L(2, tcps_connattempt); R(2, tcps_sndtotal); 233 L(3, tcps_accepts); R(3, tcps_sndpack); 234 L(4, tcps_connects); R(4, tcps_sndrexmitpack); 235 L(5, tcps_drops); R(5, tcps_sndacks); 236 L(6, tcps_conndrops); R(6, tcps_sndprobe); 237 L(7, tcps_timeoutdrop); R(7, tcps_sndwinup); 238 L(8, tcps_keepdrops); R(8, tcps_sndurg); 239 L(9, tcps_listendrop); R(9, tcps_sndctrl); 240 R(10, tcps_mturesent); 241 R(11, tcps_rcvtotal); 242 L(12, tcps_segstimed); R(12, tcps_rcvpack); 243 L(13, tcps_rttupdated); R(13, tcps_rcvduppack); 244 L(14, tcps_delack); R(14, tcps_rcvpartduppack); 245 L(15, tcps_rexmttimeo); R(15, tcps_rcvoopack); 246 L(16, tcps_persisttimeo); R(16, tcps_rcvdupack); 247 L(17, tcps_keepprobe); R(17, tcps_rcvackpack); 248 L(18, tcps_keeptimeo); R(18, tcps_rcvwinprobe); 249 R(19, tcps_rcvwinupd); 250 #undef DO 251 #undef L 252 #undef R 253 } 254 255 int 256 inittcp(void) 257 { 258 size_t len; 259 int name[4]; 260 261 name[0] = CTL_NET; 262 name[1] = PF_INET; 263 name[2] = IPPROTO_TCP; 264 name[3] = TCPCTL_STATS; 265 266 len = 0; 267 if (sysctl(name, 4, 0, &len, 0, 0) < 0) { 268 error("sysctl getting tcpstat size failed"); 269 return 0; 270 } 271 if (len > sizeof curstat) { 272 error("tcpstat structure has grown--recompile systat!"); 273 return 0; 274 } 275 if (sysctl(name, 4, &initstat, &len, 0, 0) < 0) { 276 error("sysctl getting tcpstat failed"); 277 return 0; 278 } 279 oldstat = initstat; 280 return 1; 281 } 282 283 void 284 resettcp(void) 285 { 286 size_t len; 287 int name[4]; 288 289 name[0] = CTL_NET; 290 name[1] = PF_INET; 291 name[2] = IPPROTO_TCP; 292 name[3] = TCPCTL_STATS; 293 294 len = sizeof initstat; 295 if (sysctl(name, 4, &initstat, &len, 0, 0) < 0) { 296 error("sysctl getting tcpstat failed"); 297 } 298 oldstat = initstat; 299 } 300 301 void 302 fetchtcp(void) 303 { 304 int name[4]; 305 size_t len; 306 307 oldstat = curstat; 308 name[0] = CTL_NET; 309 name[1] = PF_INET; 310 name[2] = IPPROTO_TCP; 311 name[3] = TCPCTL_STATS; 312 len = sizeof curstat; 313 314 if (sysctl(name, 4, &curstat, &len, 0, 0) < 0) 315 return; 316 } 317 318