tcp.c revision 170780
129881Swollman/*- 229881Swollman * Copyright (c) 1980, 1992, 1993 329881Swollman * The Regents of the University of California. All rights reserved. 429881Swollman * 529881Swollman * Redistribution and use in source and binary forms, with or without 629881Swollman * modification, are permitted provided that the following conditions 729881Swollman * are met: 829881Swollman * 1. Redistributions of source code must retain the above copyright 929881Swollman * notice, this list of conditions and the following disclaimer. 1029881Swollman * 2. Redistributions in binary form must reproduce the above copyright 1129881Swollman * notice, this list of conditions and the following disclaimer in the 1229881Swollman * documentation and/or other materials provided with the distribution. 1329881Swollman * 3. All advertising materials mentioning features or use of this software 1429881Swollman * must display the following acknowledgement: 1529881Swollman * This product includes software developed by the University of 1629881Swollman * California, Berkeley and its contributors. 1729881Swollman * 4. Neither the name of the University nor the names of its contributors 1829881Swollman * may be used to endorse or promote products derived from this software 1929881Swollman * without specific prior written permission. 2029881Swollman * 2129881Swollman * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 2229881Swollman * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 2329881Swollman * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 2429881Swollman * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 2529881Swollman * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 2629881Swollman * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 2729881Swollman * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 2829881Swollman * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 2929881Swollman * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 3029881Swollman * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 3129881Swollman * SUCH DAMAGE. 3229881Swollman */ 3329881Swollman 34126229Sbde#if 0 35126229Sbde#ifndef lint 36126229Sbde/* From: */ 37126229Sbdestatic char sccsid[] = "@(#)mbufs.c 8.1 (Berkeley) 6/6/93"; 38126229Sbdestatic const char rcsid[] = 39126229Sbde "Id: mbufs.c,v 1.5 1997/02/24 20:59:03 wollman Exp"; 40126229Sbde#endif /* not lint */ 41126229Sbde#endif 42126229Sbde 4387715Smarkm#include <sys/cdefs.h> 4487715Smarkm__FBSDID("$FreeBSD: head/usr.bin/systat/tcp.c 170780 2007-06-15 17:55:44Z jhb $"); 4587715Smarkm 4629881Swollman#include <sys/param.h> 4729881Swollman#include <sys/types.h> 4829881Swollman#include <sys/socket.h> 4929881Swollman#include <sys/sysctl.h> 5029881Swollman 5129881Swollman#include <netinet/in.h> 5229881Swollman#include <netinet/in_systm.h> 5329881Swollman#include <netinet/ip.h> 5429881Swollman#include <netinet/tcp.h> 5529881Swollman#include <netinet/tcp_seq.h> 5629881Swollman#include <netinet/tcp_fsm.h> 5729881Swollman#include <netinet/tcp_timer.h> 5829881Swollman#include <netinet/tcp_var.h> 5929881Swollman 6029881Swollman#include <stdlib.h> 6129881Swollman#include <string.h> 6229881Swollman#include <paths.h> 6387715Smarkm 6429881Swollman#include "systat.h" 6529881Swollman#include "extern.h" 6629881Swollman#include "mode.h" 6729881Swollman 6829881Swollmanstatic struct tcpstat curstat, initstat, oldstat; 6929881Swollman 7029881Swollman/*- 7129881Swollman--0 1 2 3 4 5 6 7 7229881Swollman--0123456789012345678901234567890123456789012345678901234567890123456789012345 73158160Sbde00 TCP Connections TCP Packets 74158160Sbde01999999999 connections initiated 999999999 total packets sent 75158160Sbde02999999999 connections accepted 999999999 - data 76170780Sjhb03999999999 connections established 999999999 - data (retransmit by dupack) 77170780Sjhb04999999999 connections dropped 999999999 - data (retransmit by sack) 78170780Sjhb05999999999 - in embryonic state 999999999 - ack-only 79170780Sjhb06999999999 - on retransmit timeout 999999999 - window probes 80170780Sjhb07999999999 - by keepalive 999999999 - window updates 81170780Sjhb08999999999 - from listen queue 999999999 - urgent data only 82170780Sjhb09 999999999 - control 83170780Sjhb10 999999999 - resends by PMTU discovery 84170780Sjhb11 TCP Timers 999999999 total packets received 85170780Sjhb12999999999 potential rtt updates 999999999 - in sequence 86170780Sjhb13999999999 - successful 999999999 - completely duplicate 87170780Sjhb14999999999 delayed acks sent 999999999 - with some duplicate data 88170780Sjhb15999999999 retransmit timeouts 999999999 - out-of-order 89170780Sjhb16999999999 persist timeouts 999999999 - duplicate acks 90170780Sjhb17999999999 keepalive probes 999999999 - acks 91170780Sjhb18999999999 - timeouts 999999999 - window probes 92170780Sjhb19 999999999 - window updates 93170780Sjhb20 999999999 - bad checksum 9429881Swollman--0123456789012345678901234567890123456789012345678901234567890123456789012345 9529881Swollman--0 1 2 3 4 5 6 7 9629881Swollman*/ 9729881Swollman 9829881SwollmanWINDOW * 9929881Swollmanopentcp(void) 10029881Swollman{ 101158160Sbde return (subwin(stdscr, LINES-3-1, 0, MAINWIN_ROW, 0)); 10229881Swollman} 10329881Swollman 10429881Swollmanvoid 10529881Swollmanclosetcp(w) 10629881Swollman WINDOW *w; 10729881Swollman{ 10829881Swollman if (w == NULL) 10929881Swollman return; 11029881Swollman wclear(w); 11129881Swollman wrefresh(w); 112158160Sbde delwin(w); 11329881Swollman} 11429881Swollman 11529881Swollmanvoid 11629881Swollmanlabeltcp(void) 11729881Swollman{ 11829881Swollman wmove(wnd, 0, 0); wclrtoeol(wnd); 11929881Swollman#define L(row, str) mvwprintw(wnd, row, 10, str) 12029881Swollman#define R(row, str) mvwprintw(wnd, row, 45, str); 121158160Sbde L(0, "TCP Connections"); R(0, "TCP Packets"); 122158160Sbde L(1, "connections initiated"); R(1, "total packets sent"); 123158160Sbde L(2, "connections accepted"); R(2, "- data"); 124170780Sjhb L(3, "connections established"); R(3, "- data (retransmit by dupack)"); 125170780Sjhb L(4, "connections dropped"); R(4, "- data (retransmit by sack)"); 126170780Sjhb L(5, "- in embryonic state"); R(5, "- ack-only"); 127170780Sjhb L(6, "- on retransmit timeout"); R(6, "- window probes"); 128170780Sjhb L(7, "- by keepalive"); R(7, "- window updates"); 129170780Sjhb L(8, "- from listen queue"); R(8, "- urgent data only"); 130170780Sjhb R(9, "- control"); 131170780Sjhb R(10, "- resends by PMTU discovery"); 132170780Sjhb L(11, "TCP Timers"); R(11, "total packets received"); 133170780Sjhb L(12, "potential rtt updates"); R(12, "- in sequence"); 134170780Sjhb L(13, "- successful"); R(13, "- completely duplicate"); 135170780Sjhb L(14, "delayed acks sent"); R(14, "- with some duplicate data"); 136170780Sjhb L(15, "retransmit timeouts"); R(15, "- out-of-order"); 137170780Sjhb L(16, "persist timeouts"); R(16, "- duplicate acks"); 138170780Sjhb L(17, "keepalive probes"); R(17, "- acks"); 139170780Sjhb L(18, "- timeouts"); R(18, "- window probes"); 140170780Sjhb R(19, "- window updates"); 141170780Sjhb R(20, "- bad checksum"); 14229881Swollman#undef L 14329881Swollman#undef R 14429881Swollman} 14529881Swollman 14629881Swollmanstatic void 14729881Swollmandomode(struct tcpstat *ret) 14829881Swollman{ 14929881Swollman const struct tcpstat *sub; 15040060Sobrien int divisor = 1; 15129881Swollman 15229881Swollman switch(currentmode) { 15329881Swollman case display_RATE: 15429881Swollman sub = &oldstat; 15529881Swollman divisor = naptime; 15629881Swollman break; 15729881Swollman case display_DELTA: 15829881Swollman sub = &oldstat; 15929881Swollman break; 16029881Swollman case display_SINCE: 16129881Swollman sub = &initstat; 16229881Swollman break; 16329881Swollman default: 16429881Swollman *ret = curstat; 16529881Swollman return; 16629881Swollman } 16729881Swollman#define DO(stat) ret->stat = (curstat.stat - sub->stat) / divisor 16829881Swollman DO(tcps_connattempt); 16929881Swollman DO(tcps_accepts); 17029881Swollman DO(tcps_connects); 17129881Swollman DO(tcps_drops); 17229881Swollman DO(tcps_conndrops); 17329881Swollman DO(tcps_closed); 17429881Swollman DO(tcps_segstimed); 17529881Swollman DO(tcps_rttupdated); 17629881Swollman DO(tcps_delack); 17729881Swollman DO(tcps_timeoutdrop); 17829881Swollman DO(tcps_rexmttimeo); 17929881Swollman DO(tcps_persisttimeo); 18029881Swollman DO(tcps_keeptimeo); 18129881Swollman DO(tcps_keepprobe); 18229881Swollman DO(tcps_keepdrops); 18329881Swollman 18429881Swollman DO(tcps_sndtotal); 18529881Swollman DO(tcps_sndpack); 18629881Swollman DO(tcps_sndbyte); 18729881Swollman DO(tcps_sndrexmitpack); 188170780Sjhb DO(tcps_sack_rexmits); 18929881Swollman DO(tcps_sndacks); 19029881Swollman DO(tcps_sndprobe); 19129881Swollman DO(tcps_sndurg); 19229881Swollman DO(tcps_sndwinup); 19329881Swollman DO(tcps_sndctrl); 19429881Swollman 19529881Swollman DO(tcps_rcvtotal); 19629881Swollman DO(tcps_rcvpack); 19729881Swollman DO(tcps_rcvbyte); 19829881Swollman DO(tcps_rcvbadsum); 19929881Swollman DO(tcps_rcvbadoff); 20029881Swollman DO(tcps_rcvshort); 20129881Swollman DO(tcps_rcvduppack); 20229881Swollman DO(tcps_rcvdupbyte); 20329881Swollman DO(tcps_rcvpartduppack); 20429881Swollman DO(tcps_rcvpartdupbyte); 20529881Swollman DO(tcps_rcvoopack); 20629881Swollman DO(tcps_rcvoobyte); 20729881Swollman DO(tcps_rcvpackafterwin); 20829881Swollman DO(tcps_rcvbyteafterwin); 20929881Swollman DO(tcps_rcvafterclose); 21029881Swollman DO(tcps_rcvwinprobe); 21129881Swollman DO(tcps_rcvdupack); 21229881Swollman DO(tcps_rcvacktoomuch); 21329881Swollman DO(tcps_rcvackpack); 21429881Swollman DO(tcps_rcvackbyte); 21529881Swollman DO(tcps_rcvwinupd); 21629881Swollman DO(tcps_pawsdrop); 21729881Swollman DO(tcps_predack); 21829881Swollman DO(tcps_preddat); 21929881Swollman DO(tcps_pcbcachemiss); 22029881Swollman DO(tcps_cachedrtt); 22129881Swollman DO(tcps_cachedrttvar); 22229881Swollman DO(tcps_cachedssthresh); 22329881Swollman DO(tcps_usedrtt); 22429881Swollman DO(tcps_usedrttvar); 22529881Swollman DO(tcps_usedssthresh); 22629881Swollman DO(tcps_persistdrop); 22729881Swollman DO(tcps_badsyn); 22829881Swollman DO(tcps_mturesent); 22929881Swollman DO(tcps_listendrop); 23029881Swollman#undef DO 23129881Swollman} 232158161Sbde 23329881Swollmanvoid 23429881Swollmanshowtcp(void) 23529881Swollman{ 23629881Swollman struct tcpstat stats; 23729881Swollman 23829881Swollman memset(&stats, 0, sizeof stats); 23929881Swollman domode(&stats); 24029881Swollman 24129881Swollman#define DO(stat, row, col) \ 24229881Swollman mvwprintw(wnd, row, col, "%9lu", stats.stat) 24329881Swollman#define L(row, stat) DO(stat, row, 0) 24429881Swollman#define R(row, stat) DO(stat, row, 35) 245158160Sbde L(1, tcps_connattempt); R(1, tcps_sndtotal); 246158160Sbde L(2, tcps_accepts); R(2, tcps_sndpack); 247158160Sbde L(3, tcps_connects); R(3, tcps_sndrexmitpack); 248170780Sjhb L(4, tcps_drops); R(4, tcps_sack_rexmits); 249170780Sjhb L(5, tcps_conndrops); R(5, tcps_sndacks); 250170780Sjhb L(6, tcps_timeoutdrop); R(6, tcps_sndprobe); 251170780Sjhb L(7, tcps_keepdrops); R(7, tcps_sndwinup); 252170780Sjhb L(8, tcps_listendrop); R(8, tcps_sndurg); 253170780Sjhb R(9, tcps_sndctrl); 254170780Sjhb R(10, tcps_mturesent); 255170780Sjhb R(11, tcps_rcvtotal); 256170780Sjhb L(12, tcps_segstimed); R(12, tcps_rcvpack); 257170780Sjhb L(13, tcps_rttupdated); R(13, tcps_rcvduppack); 258170780Sjhb L(14, tcps_delack); R(14, tcps_rcvpartduppack); 259170780Sjhb L(15, tcps_rexmttimeo); R(15, tcps_rcvoopack); 260170780Sjhb L(16, tcps_persisttimeo); R(16, tcps_rcvdupack); 261170780Sjhb L(17, tcps_keepprobe); R(17, tcps_rcvackpack); 262170780Sjhb L(18, tcps_keeptimeo); R(18, tcps_rcvwinprobe); 263170780Sjhb R(19, tcps_rcvwinupd); 264170780Sjhb R(20, tcps_rcvbadsum); 26529881Swollman#undef DO 26629881Swollman#undef L 26729881Swollman#undef R 26829881Swollman} 26929881Swollman 27029881Swollmanint 27129881Swollmaninittcp(void) 27229881Swollman{ 27329881Swollman size_t len; 27429881Swollman int name[4]; 27529881Swollman 27629881Swollman name[0] = CTL_NET; 27729881Swollman name[1] = PF_INET; 27829881Swollman name[2] = IPPROTO_TCP; 27929881Swollman name[3] = TCPCTL_STATS; 28029881Swollman 28129881Swollman len = 0; 28229881Swollman if (sysctl(name, 4, 0, &len, 0, 0) < 0) { 28329881Swollman error("sysctl getting tcpstat size failed"); 28429881Swollman return 0; 28529881Swollman } 28629881Swollman if (len > sizeof curstat) { 28729881Swollman error("tcpstat structure has grown--recompile systat!"); 28829881Swollman return 0; 28929881Swollman } 29029881Swollman if (sysctl(name, 4, &initstat, &len, 0, 0) < 0) { 29129881Swollman error("sysctl getting tcpstat failed"); 29229881Swollman return 0; 29329881Swollman } 29429881Swollman oldstat = initstat; 29529881Swollman return 1; 29629881Swollman} 29729881Swollman 29829881Swollmanvoid 29929881Swollmanresettcp(void) 30029881Swollman{ 30129881Swollman size_t len; 30229881Swollman int name[4]; 30329881Swollman 30429881Swollman name[0] = CTL_NET; 30529881Swollman name[1] = PF_INET; 30629881Swollman name[2] = IPPROTO_TCP; 30729881Swollman name[3] = TCPCTL_STATS; 30829881Swollman 30929881Swollman len = sizeof initstat; 31029881Swollman if (sysctl(name, 4, &initstat, &len, 0, 0) < 0) { 31129881Swollman error("sysctl getting tcpstat failed"); 31229881Swollman } 31329881Swollman oldstat = initstat; 31429881Swollman} 31529881Swollman 31629881Swollmanvoid 31729881Swollmanfetchtcp(void) 31829881Swollman{ 31929881Swollman int name[4]; 32029881Swollman size_t len; 32129881Swollman 32229881Swollman oldstat = curstat; 32329881Swollman name[0] = CTL_NET; 32429881Swollman name[1] = PF_INET; 32529881Swollman name[2] = IPPROTO_TCP; 32629881Swollman name[3] = TCPCTL_STATS; 32729881Swollman len = sizeof curstat; 32829881Swollman 32929881Swollman if (sysctl(name, 4, &curstat, &len, 0, 0) < 0) 33029881Swollman return; 33129881Swollman} 33229881Swollman 333