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 34 #ifndef lint 35 /* From: 36 static char sccsid[] = "@(#)mbufs.c 8.1 (Berkeley) 6/6/93"; 37 static const char rcsid[] = 38 "Id: mbufs.c,v 1.5 1997/02/24 20:59:03 wollman Exp"; 39 */ 40 static const char rcsid[] = 41 "$FreeBSD$"; 42 #endif /* not lint */ 43 44 #include <sys/param.h> 45 #include <sys/types.h> 46 #include <sys/socket.h> 47 #include <sys/sysctl.h> 48 49 #include <netinet/in.h> 50 #include <netinet/in_systm.h> 51 #include <netinet/ip.h> 52 #include <netinet/tcp.h> 53 #include <netinet/tcp_seq.h> 54 #include <netinet/tcp_fsm.h> 55 #include <netinet/tcp_timer.h> 56 #include <netinet/tcp_var.h> 57 58 #include <stdlib.h> 59 #include <string.h> 60 #include <paths.h> 61 #include "systat.h" 62 #include "extern.h" 63 #include "mode.h" 64 65 static struct tcpstat curstat, initstat, oldstat; 66 67 /*- 68 --0 1 2 3 4 5 6 7 69 --0123456789012345678901234567890123456789012345678901234567890123456789012345 70 01 TCP Connections TCP Packets 71 02999999999 connections initiated 999999999 total packets sent 72 03999999999 connections accepted 999999999 - data 73 04999999999 connections established 999999999 - data (retransmit) 74 05999999999 connections dropped 999999999 - ack-only 75 06999999999 - in embryonic state 999999999 - window probes 76 07999999999 - on retransmit timeout 999999999 - window updates 77 08999999999 - by keepalive 999999999 - urgent data only 78 09999999999 - from listen queue 999999999 - control 79 10 999999999 - resends by PMTU discovery 80 11 TCP Timers 999999999 total packets received 81 12999999999 potential rtt updates 999999999 - in sequence 82 13999999999 - successful 999999999 - completely duplicate 83 14999999999 delayed acks sent 999999999 - with some duplicate data 84 15999999999 retransmit timeouts 999999999 - out-of-order 85 16999999999 persist timeouts 999999999 - duplicate acks 86 17999999999 keepalive probes 999999999 - acks 87 18999999999 - timeouts 999999999 - window probes 88 19 999999999 - window updates 89 20 999999999 - bad checksum 90 --0123456789012345678901234567890123456789012345678901234567890123456789012345 91 --0 1 2 3 4 5 6 7 92 */ 93 94 WINDOW * 95 opentcp(void) 96 { 97 98 return (stdscr); 99 } 100 101 void 102 closetcp(w) 103 WINDOW *w; 104 { 105 if (w == NULL) 106 return; 107 wclear(w); 108 wrefresh(w); 109 } 110 111 void 112 labeltcp(void) 113 { 114 wmove(wnd, 0, 0); wclrtoeol(wnd); 115 #define L(row, str) mvwprintw(wnd, row, 10, str) 116 #define R(row, str) mvwprintw(wnd, row, 45, str); 117 L(1, "TCP Connections"); R(1, "TCP Packets"); 118 L(2, "connections initiated"); R(2, "total packets sent"); 119 L(3, "connections accepted"); R(3, "- data"); 120 L(4, "connections established"); R(4, "- data (retransmit)"); 121 L(5, "connections dropped"); R(5, "- ack-only"); 122 L(6, "- in embryonic state"); R(6, "- window probes"); 123 L(7, "- on retransmit timeout"); R(7, "- window updates"); 124 L(8, "- by keepalive"); R(8, "- urgent data only"); 125 L(9, "- from listen queue"); R(9, "- control"); 126 R(10, "- resends by PMTU discovery"); 127 L(11, "TCP Timers"); R(11, "total packets received"); 128 L(12, "potential rtt updates"); R(12, "- in sequence"); 129 L(13, "- successful"); R(13, "- completely duplicate"); 130 L(14, "delayed acks sent"); R(14, "- with some duplicate data"); 131 L(15, "retransmit timeouts"); R(15, "- out-of-order"); 132 L(16, "persist timeouts"); R(16, "- duplicate acks"); 133 L(17, "keepalive probes"); R(17, "- acks"); 134 L(18, "- timeouts"); R(18, "- window probes"); 135 R(19, "- window updates"); 136 R(20, "- bad checksum"); 137 #undef L 138 #undef R 139 } 140 141 static void 142 domode(struct tcpstat *ret) 143 { 144 const struct tcpstat *sub; 145 int divisor = 1; 146 147 switch(currentmode) { 148 case display_RATE: 149 sub = &oldstat; 150 divisor = naptime; 151 break; 152 case display_DELTA: 153 sub = &oldstat; 154 break; 155 case display_SINCE: 156 sub = &initstat; 157 break; 158 default: 159 *ret = curstat; 160 return; 161 } 162 #define DO(stat) ret->stat = (curstat.stat - sub->stat) / divisor 163 DO(tcps_connattempt); 164 DO(tcps_accepts); 165 DO(tcps_connects); 166 DO(tcps_drops); 167 DO(tcps_conndrops); 168 DO(tcps_closed); 169 DO(tcps_segstimed); 170 DO(tcps_rttupdated); 171 DO(tcps_delack); 172 DO(tcps_timeoutdrop); 173 DO(tcps_rexmttimeo); 174 DO(tcps_persisttimeo); 175 DO(tcps_keeptimeo); 176 DO(tcps_keepprobe); 177 DO(tcps_keepdrops); 178 179 DO(tcps_sndtotal); 180 DO(tcps_sndpack); 181 DO(tcps_sndbyte); 182 DO(tcps_sndrexmitpack); 183 DO(tcps_sndrexmitbyte); 184 DO(tcps_sndacks); 185 DO(tcps_sndprobe); 186 DO(tcps_sndurg); 187 DO(tcps_sndwinup); 188 DO(tcps_sndctrl); 189 190 DO(tcps_rcvtotal); 191 DO(tcps_rcvpack); 192 DO(tcps_rcvbyte); 193 DO(tcps_rcvbadsum); 194 DO(tcps_rcvbadoff); 195 DO(tcps_rcvshort); 196 DO(tcps_rcvduppack); 197 DO(tcps_rcvdupbyte); 198 DO(tcps_rcvpartduppack); 199 DO(tcps_rcvpartdupbyte); 200 DO(tcps_rcvoopack); 201 DO(tcps_rcvoobyte); 202 DO(tcps_rcvpackafterwin); 203 DO(tcps_rcvbyteafterwin); 204 DO(tcps_rcvafterclose); 205 DO(tcps_rcvwinprobe); 206 DO(tcps_rcvdupack); 207 DO(tcps_rcvacktoomuch); 208 DO(tcps_rcvackpack); 209 DO(tcps_rcvackbyte); 210 DO(tcps_rcvwinupd); 211 DO(tcps_pawsdrop); 212 DO(tcps_predack); 213 DO(tcps_preddat); 214 DO(tcps_pcbcachemiss); 215 DO(tcps_cachedrtt); 216 DO(tcps_cachedrttvar); 217 DO(tcps_cachedssthresh); 218 DO(tcps_usedrtt); 219 DO(tcps_usedrttvar); 220 DO(tcps_usedssthresh); 221 DO(tcps_persistdrop); 222 DO(tcps_badsyn); 223 DO(tcps_mturesent); 224 DO(tcps_listendrop); 225 #undef DO 226 } 227 228 void 229 showtcp(void) 230 { 231 struct tcpstat stats; 232 233 memset(&stats, 0, sizeof stats); 234 domode(&stats); 235 236 #define DO(stat, row, col) \ 237 mvwprintw(wnd, row, col, "%9lu", stats.stat) 238 #define L(row, stat) DO(stat, row, 0) 239 #define R(row, stat) DO(stat, row, 35) 240 L(2, tcps_connattempt); R(2, tcps_sndtotal); 241 L(3, tcps_accepts); R(3, tcps_sndpack); 242 L(4, tcps_connects); R(4, tcps_sndrexmitpack); 243 L(5, tcps_drops); R(5, tcps_sndacks); 244 L(6, tcps_conndrops); R(6, tcps_sndprobe); 245 L(7, tcps_timeoutdrop); R(7, tcps_sndwinup); 246 L(8, tcps_keepdrops); R(8, tcps_sndurg); 247 L(9, tcps_listendrop); R(9, tcps_sndctrl); 248 R(10, tcps_mturesent); 249 R(11, tcps_rcvtotal); 250 L(12, tcps_segstimed); R(12, tcps_rcvpack); 251 L(13, tcps_rttupdated); R(13, tcps_rcvduppack); 252 L(14, tcps_delack); R(14, tcps_rcvpartduppack); 253 L(15, tcps_rexmttimeo); R(15, tcps_rcvoopack); 254 L(16, tcps_persisttimeo); R(16, tcps_rcvdupack); 255 L(17, tcps_keepprobe); R(17, tcps_rcvackpack); 256 L(18, tcps_keeptimeo); R(18, tcps_rcvwinprobe); 257 R(19, tcps_rcvwinupd); 258 R(20, tcps_rcvbadsum); 259 #undef DO 260 #undef L 261 #undef R 262 } 263 264 int 265 inittcp(void) 266 { 267 size_t len; 268 int name[4]; 269 270 name[0] = CTL_NET; 271 name[1] = PF_INET; 272 name[2] = IPPROTO_TCP; 273 name[3] = TCPCTL_STATS; 274 275 len = 0; 276 if (sysctl(name, 4, 0, &len, 0, 0) < 0) { 277 error("sysctl getting tcpstat size failed"); 278 return 0; 279 } 280 if (len > sizeof curstat) { 281 error("tcpstat structure has grown--recompile systat!"); 282 return 0; 283 } 284 if (sysctl(name, 4, &initstat, &len, 0, 0) < 0) { 285 error("sysctl getting tcpstat failed"); 286 return 0; 287 } 288 oldstat = initstat; 289 return 1; 290 } 291 292 void 293 resettcp(void) 294 { 295 size_t len; 296 int name[4]; 297 298 name[0] = CTL_NET; 299 name[1] = PF_INET; 300 name[2] = IPPROTO_TCP; 301 name[3] = TCPCTL_STATS; 302 303 len = sizeof initstat; 304 if (sysctl(name, 4, &initstat, &len, 0, 0) < 0) { 305 error("sysctl getting tcpstat failed"); 306 } 307 oldstat = initstat; 308 } 309 310 void 311 fetchtcp(void) 312 { 313 int name[4]; 314 size_t len; 315 316 oldstat = curstat; 317 name[0] = CTL_NET; 318 name[1] = PF_INET; 319 name[2] = IPPROTO_TCP; 320 name[3] = TCPCTL_STATS; 321 len = sizeof curstat; 322 323 if (sysctl(name, 4, &curstat, &len, 0, 0) < 0) 324 return; 325 } 326 327