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 1.5 2004/04/07 21:40:19 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 tcp_stats 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(WINDOW *w) 95 { 96 if (w == NULL) 97 return; 98 wclear(w); 99 wrefresh(w); 100 delwin(w); 101 } 102 103 void 104 labeltcp(void) 105 { 106 wmove(wnd, 0, 0); wclrtoeol(wnd); 107 #define L(row, str) mvwprintw(wnd, row, 10, str) 108 #define R(row, str) mvwprintw(wnd, row, 45, str); 109 L(1, "TCP Connections"); R(1, "TCP Packets"); 110 L(2, "connections initiated"); R(2, "total packets sent"); 111 L(3, "connections accepted"); R(3, "- data"); 112 L(4, "connections established"); R(4, "- data (retransmit)"); 113 L(5, "connections dropped"); R(5, "- ack-only"); 114 L(6, "- in embryonic state"); R(6, "- window probes"); 115 L(7, "- on retransmit timeout"); R(7, "- window updates"); 116 L(8, "- by keepalive"); R(8, "- urgent data only"); 117 L(9, "- from listen queue"); R(9, "- control"); 118 R(10, "- resends by PMTU discovery"); 119 L(11, "TCP Timers"); R(11, "total packets received"); 120 L(12, "potential rtt updates"); R(12, "- in sequence"); 121 L(13, "- successful"); R(13, "- completely duplicate"); 122 L(14, "delayed acks sent"); R(14, "- with some duplicate data"); 123 L(15, "retransmit timeouts"); R(15, "- out-of-order"); 124 L(16, "persist timeouts"); R(16, "- duplicate acks"); 125 L(17, "keepalive probes"); R(17, "- acks"); 126 L(18, "- timeouts"); R(18, "- window probes"); 127 R(19, "- window updates"); 128 #undef L 129 #undef R 130 } 131 132 static void 133 domode(struct tcp_stats *ret) 134 { 135 const struct tcp_stats *sub; 136 double divisor = 1.0; 137 138 switch(currentmode) { 139 case display_RATE: 140 sub = &oldstat; 141 divisor = naptime; 142 break; 143 case display_DELTA: 144 sub = &oldstat; 145 break; 146 case display_SINCE: 147 sub = &initstat; 148 break; 149 default: 150 *ret = curstat; 151 return; 152 } 153 #define DO(stat) ret->stat = (double)(curstat.stat - sub->stat) / divisor 154 DO(tcps_connattempt); 155 DO(tcps_accepts); 156 DO(tcps_connects); 157 DO(tcps_drops); 158 DO(tcps_conndrops); 159 DO(tcps_closed); 160 DO(tcps_segstimed); 161 DO(tcps_rttupdated); 162 DO(tcps_delack); 163 DO(tcps_timeoutdrop); 164 DO(tcps_rexmttimeo); 165 DO(tcps_persisttimeo); 166 DO(tcps_keeptimeo); 167 DO(tcps_keepprobe); 168 DO(tcps_keepdrops); 169 170 DO(tcps_sndtotal); 171 DO(tcps_sndpack); 172 DO(tcps_sndbyte); 173 DO(tcps_sndrexmitpack); 174 DO(tcps_sndrexmitbyte); 175 DO(tcps_sndacks); 176 DO(tcps_sndprobe); 177 DO(tcps_sndurg); 178 DO(tcps_sndwinup); 179 DO(tcps_sndctrl); 180 181 DO(tcps_rcvtotal); 182 DO(tcps_rcvpack); 183 DO(tcps_rcvbyte); 184 DO(tcps_rcvbadsum); 185 DO(tcps_rcvbadoff); 186 DO(tcps_rcvshort); 187 DO(tcps_rcvduppack); 188 DO(tcps_rcvdupbyte); 189 DO(tcps_rcvpartduppack); 190 DO(tcps_rcvpartdupbyte); 191 DO(tcps_rcvoopack); 192 DO(tcps_rcvoobyte); 193 DO(tcps_rcvpackafterwin); 194 DO(tcps_rcvbyteafterwin); 195 DO(tcps_rcvafterclose); 196 DO(tcps_rcvwinprobe); 197 DO(tcps_rcvdupack); 198 DO(tcps_rcvacktoomuch); 199 DO(tcps_rcvackpack); 200 DO(tcps_rcvackbyte); 201 DO(tcps_rcvwinupd); 202 DO(tcps_pawsdrop); 203 DO(tcps_predack); 204 DO(tcps_preddat); 205 DO(tcps_pcbcachemiss); 206 DO(tcps_cachedrtt); 207 DO(tcps_cachedrttvar); 208 DO(tcps_cachedssthresh); 209 DO(tcps_usedrtt); 210 DO(tcps_usedrttvar); 211 DO(tcps_usedssthresh); 212 DO(tcps_persistdrop); 213 DO(tcps_badsyn); 214 DO(tcps_mturesent); 215 DO(tcps_listendrop); 216 #undef DO 217 } 218 219 void 220 showtcp(void) 221 { 222 struct tcp_stats stats; 223 224 memset(&stats, 0, sizeof stats); 225 domode(&stats); 226 227 #define DO(stat, row, col) \ 228 mvwprintw(wnd, row, col, "%9lu", stats.stat) 229 #define L(row, stat) DO(stat, row, 0) 230 #define R(row, stat) DO(stat, row, 35) 231 L(2, tcps_connattempt); R(2, tcps_sndtotal); 232 L(3, tcps_accepts); R(3, tcps_sndpack); 233 L(4, tcps_connects); R(4, tcps_sndrexmitpack); 234 L(5, tcps_drops); R(5, tcps_sndacks); 235 L(6, tcps_conndrops); R(6, tcps_sndprobe); 236 L(7, tcps_timeoutdrop); R(7, tcps_sndwinup); 237 L(8, tcps_keepdrops); R(8, tcps_sndurg); 238 L(9, tcps_listendrop); R(9, tcps_sndctrl); 239 R(10, tcps_mturesent); 240 R(11, tcps_rcvtotal); 241 L(12, tcps_segstimed); R(12, tcps_rcvpack); 242 L(13, tcps_rttupdated); R(13, tcps_rcvduppack); 243 L(14, tcps_delack); R(14, tcps_rcvpartduppack); 244 L(15, tcps_rexmttimeo); R(15, tcps_rcvoopack); 245 L(16, tcps_persisttimeo); R(16, tcps_rcvdupack); 246 L(17, tcps_keepprobe); R(17, tcps_rcvackpack); 247 L(18, tcps_keeptimeo); R(18, tcps_rcvwinprobe); 248 R(19, tcps_rcvwinupd); 249 #undef DO 250 #undef L 251 #undef R 252 } 253 254 int 255 inittcp(void) 256 { 257 size_t len; 258 int name[4]; 259 260 name[0] = CTL_NET; 261 name[1] = PF_INET; 262 name[2] = IPPROTO_TCP; 263 name[3] = TCPCTL_STATS; 264 265 len = 0; 266 if (sysctl(name, 4, 0, &len, 0, 0) < 0) { 267 error("sysctl getting tcp_stats size failed"); 268 return 0; 269 } 270 if (len > sizeof curstat) { 271 error("tcp_stats structure has grown--recompile systat!"); 272 return 0; 273 } 274 if (sysctl(name, 4, &initstat, &len, 0, 0) < 0) { 275 error("sysctl getting tcp_stats failed"); 276 return 0; 277 } 278 oldstat = initstat; 279 return 1; 280 } 281 282 void 283 resettcp(void) 284 { 285 size_t len; 286 int name[4]; 287 288 name[0] = CTL_NET; 289 name[1] = PF_INET; 290 name[2] = IPPROTO_TCP; 291 name[3] = TCPCTL_STATS; 292 293 len = sizeof initstat; 294 if (sysctl(name, 4, &initstat, &len, 0, 0) < 0) { 295 error("sysctl getting tcp_stats failed"); 296 } 297 oldstat = initstat; 298 } 299 300 void 301 fetchtcp(void) 302 { 303 int name[4]; 304 size_t len; 305 306 oldstat = curstat; 307 name[0] = CTL_NET; 308 name[1] = PF_INET; 309 name[2] = IPPROTO_TCP; 310 name[3] = TCPCTL_STATS; 311 len = sizeof curstat; 312 313 if (sysctl(name, 4, &curstat, &len, 0, 0) < 0) 314 return; 315 } 316 317