tcp.c revision 86784
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 3429881Swollman#ifndef lint 3529881Swollman/* From: 3629881Swollmanstatic char sccsid[] = "@(#)mbufs.c 8.1 (Berkeley) 6/6/93"; 3729881Swollmanstatic const char rcsid[] = 3829881Swollman "Id: mbufs.c,v 1.5 1997/02/24 20:59:03 wollman Exp"; 3929881Swollman*/ 4029881Swollmanstatic const char rcsid[] = 4150477Speter "$FreeBSD: head/usr.bin/systat/tcp.c 86784 2001-11-22 17:19:52Z jlemon $"; 4229881Swollman#endif /* not lint */ 4329881Swollman 4429881Swollman#include <sys/param.h> 4529881Swollman#include <sys/types.h> 4629881Swollman#include <sys/socket.h> 4729881Swollman#include <sys/sysctl.h> 4829881Swollman 4986784Sjlemon#include <net/route.h> 5086784Sjlemon 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> 6329881Swollman#include "systat.h" 6429881Swollman#include "extern.h" 6529881Swollman#include "mode.h" 6629881Swollman 6729881Swollmanstatic struct tcpstat curstat, initstat, oldstat; 6829881Swollman 6929881Swollman/*- 7029881Swollman--0 1 2 3 4 5 6 7 7129881Swollman--0123456789012345678901234567890123456789012345678901234567890123456789012345 7229881Swollman01 TCP Connections TCP Packets 7329881Swollman02999999999 connections initiated 999999999 total packets sent 7429881Swollman03999999999 connections accepted 999999999 - data 7529881Swollman04999999999 connections established 999999999 - data (retransmit) 7629881Swollman05999999999 connections dropped 999999999 - ack-only 7729881Swollman06999999999 - in embryonic state 999999999 - window probes 7829881Swollman07999999999 - on retransmit timeout 999999999 - window updates 7929881Swollman08999999999 - by keepalive 999999999 - urgent data only 8029881Swollman09999999999 - from listen queue 999999999 - control 8129881Swollman10 999999999 - resends by PMTU discovery 8229881Swollman11 TCP Timers 999999999 total packets received 8329881Swollman12999999999 potential rtt updates 999999999 - in sequence 8429881Swollman13999999999 - successful 999999999 - completely duplicate 8529881Swollman14999999999 delayed acks sent 999999999 - with some duplicate data 8629881Swollman15999999999 retransmit timeouts 999999999 - out-of-order 8729881Swollman16999999999 persist timeouts 999999999 - duplicate acks 8829881Swollman17999999999 keepalive probes 999999999 - acks 8929881Swollman18999999999 - timeouts 999999999 - window probes 9029881Swollman19 999999999 - window updates 9177514Sru20 999999999 - bad checksum 9229881Swollman--0123456789012345678901234567890123456789012345678901234567890123456789012345 9329881Swollman--0 1 2 3 4 5 6 7 9429881Swollman*/ 9529881Swollman 9629881SwollmanWINDOW * 9729881Swollmanopentcp(void) 9829881Swollman{ 9977515Sru 10077515Sru return (stdscr); 10129881Swollman} 10229881Swollman 10329881Swollmanvoid 10429881Swollmanclosetcp(w) 10529881Swollman WINDOW *w; 10629881Swollman{ 10729881Swollman if (w == NULL) 10829881Swollman return; 10929881Swollman wclear(w); 11029881Swollman wrefresh(w); 11129881Swollman} 11229881Swollman 11329881Swollmanvoid 11429881Swollmanlabeltcp(void) 11529881Swollman{ 11629881Swollman wmove(wnd, 0, 0); wclrtoeol(wnd); 11729881Swollman#define L(row, str) mvwprintw(wnd, row, 10, str) 11829881Swollman#define R(row, str) mvwprintw(wnd, row, 45, str); 11929881Swollman L(1, "TCP Connections"); R(1, "TCP Packets"); 12029881Swollman L(2, "connections initiated"); R(2, "total packets sent"); 12129881Swollman L(3, "connections accepted"); R(3, "- data"); 12229881Swollman L(4, "connections established"); R(4, "- data (retransmit)"); 12329881Swollman L(5, "connections dropped"); R(5, "- ack-only"); 12429881Swollman L(6, "- in embryonic state"); R(6, "- window probes"); 12529881Swollman L(7, "- on retransmit timeout"); R(7, "- window updates"); 12629881Swollman L(8, "- by keepalive"); R(8, "- urgent data only"); 12729881Swollman L(9, "- from listen queue"); R(9, "- control"); 12829881Swollman R(10, "- resends by PMTU discovery"); 12929881Swollman L(11, "TCP Timers"); R(11, "total packets received"); 13029881Swollman L(12, "potential rtt updates"); R(12, "- in sequence"); 13129881Swollman L(13, "- successful"); R(13, "- completely duplicate"); 13229881Swollman L(14, "delayed acks sent"); R(14, "- with some duplicate data"); 13329881Swollman L(15, "retransmit timeouts"); R(15, "- out-of-order"); 13429881Swollman L(16, "persist timeouts"); R(16, "- duplicate acks"); 13529881Swollman L(17, "keepalive probes"); R(17, "- acks"); 13629881Swollman L(18, "- timeouts"); R(18, "- window probes"); 13729881Swollman R(19, "- window updates"); 13877514Sru R(20, "- bad checksum"); 13929881Swollman#undef L 14029881Swollman#undef R 14129881Swollman} 14229881Swollman 14329881Swollmanstatic void 14429881Swollmandomode(struct tcpstat *ret) 14529881Swollman{ 14629881Swollman const struct tcpstat *sub; 14740060Sobrien int divisor = 1; 14829881Swollman 14929881Swollman switch(currentmode) { 15029881Swollman case display_RATE: 15129881Swollman sub = &oldstat; 15229881Swollman divisor = naptime; 15329881Swollman break; 15429881Swollman case display_DELTA: 15529881Swollman sub = &oldstat; 15629881Swollman break; 15729881Swollman case display_SINCE: 15829881Swollman sub = &initstat; 15929881Swollman break; 16029881Swollman default: 16129881Swollman *ret = curstat; 16229881Swollman return; 16329881Swollman } 16429881Swollman#define DO(stat) ret->stat = (curstat.stat - sub->stat) / divisor 16529881Swollman DO(tcps_connattempt); 16629881Swollman DO(tcps_accepts); 16729881Swollman DO(tcps_connects); 16829881Swollman DO(tcps_drops); 16929881Swollman DO(tcps_conndrops); 17029881Swollman DO(tcps_closed); 17129881Swollman DO(tcps_segstimed); 17229881Swollman DO(tcps_rttupdated); 17329881Swollman DO(tcps_delack); 17429881Swollman DO(tcps_timeoutdrop); 17529881Swollman DO(tcps_rexmttimeo); 17629881Swollman DO(tcps_persisttimeo); 17729881Swollman DO(tcps_keeptimeo); 17829881Swollman DO(tcps_keepprobe); 17929881Swollman DO(tcps_keepdrops); 18029881Swollman 18129881Swollman DO(tcps_sndtotal); 18229881Swollman DO(tcps_sndpack); 18329881Swollman DO(tcps_sndbyte); 18429881Swollman DO(tcps_sndrexmitpack); 18529881Swollman DO(tcps_sndrexmitbyte); 18629881Swollman DO(tcps_sndacks); 18729881Swollman DO(tcps_sndprobe); 18829881Swollman DO(tcps_sndurg); 18929881Swollman DO(tcps_sndwinup); 19029881Swollman DO(tcps_sndctrl); 19129881Swollman 19229881Swollman DO(tcps_rcvtotal); 19329881Swollman DO(tcps_rcvpack); 19429881Swollman DO(tcps_rcvbyte); 19529881Swollman DO(tcps_rcvbadsum); 19629881Swollman DO(tcps_rcvbadoff); 19729881Swollman DO(tcps_rcvshort); 19829881Swollman DO(tcps_rcvduppack); 19929881Swollman DO(tcps_rcvdupbyte); 20029881Swollman DO(tcps_rcvpartduppack); 20129881Swollman DO(tcps_rcvpartdupbyte); 20229881Swollman DO(tcps_rcvoopack); 20329881Swollman DO(tcps_rcvoobyte); 20429881Swollman DO(tcps_rcvpackafterwin); 20529881Swollman DO(tcps_rcvbyteafterwin); 20629881Swollman DO(tcps_rcvafterclose); 20729881Swollman DO(tcps_rcvwinprobe); 20829881Swollman DO(tcps_rcvdupack); 20929881Swollman DO(tcps_rcvacktoomuch); 21029881Swollman DO(tcps_rcvackpack); 21129881Swollman DO(tcps_rcvackbyte); 21229881Swollman DO(tcps_rcvwinupd); 21329881Swollman DO(tcps_pawsdrop); 21429881Swollman DO(tcps_predack); 21529881Swollman DO(tcps_preddat); 21629881Swollman DO(tcps_pcbcachemiss); 21729881Swollman DO(tcps_cachedrtt); 21829881Swollman DO(tcps_cachedrttvar); 21929881Swollman DO(tcps_cachedssthresh); 22029881Swollman DO(tcps_usedrtt); 22129881Swollman DO(tcps_usedrttvar); 22229881Swollman DO(tcps_usedssthresh); 22329881Swollman DO(tcps_persistdrop); 22429881Swollman DO(tcps_badsyn); 22529881Swollman DO(tcps_mturesent); 22629881Swollman DO(tcps_listendrop); 22729881Swollman#undef DO 22829881Swollman} 22929881Swollman 23029881Swollmanvoid 23129881Swollmanshowtcp(void) 23229881Swollman{ 23329881Swollman struct tcpstat stats; 23429881Swollman 23529881Swollman memset(&stats, 0, sizeof stats); 23629881Swollman domode(&stats); 23729881Swollman 23829881Swollman#define DO(stat, row, col) \ 23929881Swollman mvwprintw(wnd, row, col, "%9lu", stats.stat) 24029881Swollman#define L(row, stat) DO(stat, row, 0) 24129881Swollman#define R(row, stat) DO(stat, row, 35) 24229881Swollman L(2, tcps_connattempt); R(2, tcps_sndtotal); 24329881Swollman L(3, tcps_accepts); R(3, tcps_sndpack); 24429881Swollman L(4, tcps_connects); R(4, tcps_sndrexmitpack); 24529881Swollman L(5, tcps_drops); R(5, tcps_sndacks); 24629881Swollman L(6, tcps_conndrops); R(6, tcps_sndprobe); 24729881Swollman L(7, tcps_timeoutdrop); R(7, tcps_sndwinup); 24829881Swollman L(8, tcps_keepdrops); R(8, tcps_sndurg); 24929881Swollman L(9, tcps_listendrop); R(9, tcps_sndctrl); 25029881Swollman R(10, tcps_mturesent); 25129881Swollman R(11, tcps_rcvtotal); 25229881Swollman L(12, tcps_segstimed); R(12, tcps_rcvpack); 25329881Swollman L(13, tcps_rttupdated); R(13, tcps_rcvduppack); 25429881Swollman L(14, tcps_delack); R(14, tcps_rcvpartduppack); 25529881Swollman L(15, tcps_rexmttimeo); R(15, tcps_rcvoopack); 25629881Swollman L(16, tcps_persisttimeo); R(16, tcps_rcvdupack); 25729881Swollman L(17, tcps_keepprobe); R(17, tcps_rcvackpack); 25829881Swollman L(18, tcps_keeptimeo); R(18, tcps_rcvwinprobe); 25929881Swollman R(19, tcps_rcvwinupd); 26077514Sru R(20, tcps_rcvbadsum); 26129881Swollman#undef DO 26229881Swollman#undef L 26329881Swollman#undef R 26429881Swollman} 26529881Swollman 26629881Swollmanint 26729881Swollmaninittcp(void) 26829881Swollman{ 26929881Swollman size_t len; 27029881Swollman int name[4]; 27129881Swollman 27229881Swollman name[0] = CTL_NET; 27329881Swollman name[1] = PF_INET; 27429881Swollman name[2] = IPPROTO_TCP; 27529881Swollman name[3] = TCPCTL_STATS; 27629881Swollman 27729881Swollman len = 0; 27829881Swollman if (sysctl(name, 4, 0, &len, 0, 0) < 0) { 27929881Swollman error("sysctl getting tcpstat size failed"); 28029881Swollman return 0; 28129881Swollman } 28229881Swollman if (len > sizeof curstat) { 28329881Swollman error("tcpstat structure has grown--recompile systat!"); 28429881Swollman return 0; 28529881Swollman } 28629881Swollman if (sysctl(name, 4, &initstat, &len, 0, 0) < 0) { 28729881Swollman error("sysctl getting tcpstat failed"); 28829881Swollman return 0; 28929881Swollman } 29029881Swollman oldstat = initstat; 29129881Swollman return 1; 29229881Swollman} 29329881Swollman 29429881Swollmanvoid 29529881Swollmanresettcp(void) 29629881Swollman{ 29729881Swollman size_t len; 29829881Swollman int name[4]; 29929881Swollman 30029881Swollman name[0] = CTL_NET; 30129881Swollman name[1] = PF_INET; 30229881Swollman name[2] = IPPROTO_TCP; 30329881Swollman name[3] = TCPCTL_STATS; 30429881Swollman 30529881Swollman len = sizeof initstat; 30629881Swollman if (sysctl(name, 4, &initstat, &len, 0, 0) < 0) { 30729881Swollman error("sysctl getting tcpstat failed"); 30829881Swollman } 30929881Swollman oldstat = initstat; 31029881Swollman} 31129881Swollman 31229881Swollmanvoid 31329881Swollmanfetchtcp(void) 31429881Swollman{ 31529881Swollman int name[4]; 31629881Swollman size_t len; 31729881Swollman 31829881Swollman oldstat = curstat; 31929881Swollman name[0] = CTL_NET; 32029881Swollman name[1] = PF_INET; 32129881Swollman name[2] = IPPROTO_TCP; 32229881Swollman name[3] = TCPCTL_STATS; 32329881Swollman len = sizeof curstat; 32429881Swollman 32529881Swollman if (sysctl(name, 4, &curstat, &len, 0, 0) < 0) 32629881Swollman return; 32729881Swollman} 32829881Swollman 329