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-rw-r--r--usr.bin/systat/tcp.c326
1 files changed, 326 insertions, 0 deletions
diff --git a/usr.bin/systat/tcp.c b/usr.bin/systat/tcp.c
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+++ b/usr.bin/systat/tcp.c
@@ -0,0 +1,326 @@
+/*-
+ * Copyright (c) 1980, 1992, 1993
+ * The Regents of the University of California. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if 0
+#ifndef lint
+/* From: */
+static char sccsid[] = "@(#)mbufs.c 8.1 (Berkeley) 6/6/93";
+static const char rcsid[] =
+ "Id: mbufs.c,v 1.5 1997/02/24 20:59:03 wollman Exp";
+#endif /* not lint */
+#endif
+
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD$");
+
+#include <sys/param.h>
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <sys/sysctl.h>
+
+#include <netinet/in.h>
+#include <netinet/in_systm.h>
+#include <netinet/ip.h>
+#include <netinet/tcp.h>
+#include <netinet/tcp_seq.h>
+#include <netinet/tcp_fsm.h>
+#include <netinet/tcp_timer.h>
+#include <netinet/tcp_var.h>
+
+#include <stdlib.h>
+#include <string.h>
+#include <paths.h>
+
+#include "systat.h"
+#include "extern.h"
+#include "mode.h"
+
+static struct tcpstat curstat, initstat, oldstat;
+
+/*-
+--0 1 2 3 4 5 6 7
+--0123456789012345678901234567890123456789012345678901234567890123456789012345
+00 TCP Connections TCP Packets
+01999999999999 connections initiated 999999999999 total packets sent
+02999999999999 connections accepted 999999999999 - data
+03999999999999 connections established 999999999999 - data (retransmit by dupack)
+04999999999999 connections dropped 999999999999 - data (retransmit by sack)
+05999999999999 - in embryonic state 999999999999 - ack-only
+06999999999999 - on retransmit timeout 999999999999 - window probes
+07999999999999 - by keepalive 999999999999 - window updates
+08999999999999 - from listen queue 999999999999 - urgent data only
+09 999999999999 - control
+10 999999999999 - resends by PMTU discovery
+11 TCP Timers 999999999999 total packets received
+12999999999999 potential rtt updates 999999999999 - in sequence
+13999999999999 - successful 999999999999 - completely duplicate
+14999999999999 delayed acks sent 999999999999 - with some duplicate data
+15999999999999 retransmit timeouts 999999999999 - out-of-order
+16999999999999 persist timeouts 999999999999 - duplicate acks
+17999999999999 keepalive probes 999999999999 - acks
+18999999999999 - timeouts 999999999999 - window probes
+19 999999999999 - window updates
+20 999999999999 - bad checksum
+--0123456789012345678901234567890123456789012345678901234567890123456789012345
+--0 1 2 3 4 5 6 7
+*/
+
+WINDOW *
+opentcp(void)
+{
+ return (subwin(stdscr, LINES-3-1, 0, MAINWIN_ROW, 0));
+}
+
+void
+closetcp(WINDOW *w)
+{
+ if (w == NULL)
+ return;
+ wclear(w);
+ wrefresh(w);
+ delwin(w);
+}
+
+void
+labeltcp(void)
+{
+ wmove(wnd, 0, 0); wclrtoeol(wnd);
+#define L(row, str) mvwprintw(wnd, row, 13, str)
+#define R(row, str) mvwprintw(wnd, row, 51, str);
+ L(0, "TCP Connections"); R(0, "TCP Packets");
+ L(1, "connections initiated"); R(1, "total packets sent");
+ L(2, "connections accepted"); R(2, "- data");
+ L(3, "connections established"); R(3, "- data (retransmit by dupack)");
+ L(4, "connections dropped"); R(4, "- data (retransmit by sack)");
+ L(5, "- in embryonic state"); R(5, "- ack-only");
+ L(6, "- on retransmit timeout"); R(6, "- window probes");
+ L(7, "- by keepalive"); R(7, "- window updates");
+ L(8, "- from listen queue"); R(8, "- urgent data only");
+ R(9, "- control");
+ R(10, "- resends by PMTU discovery");
+ L(11, "TCP Timers"); R(11, "total packets received");
+ L(12, "potential rtt updates"); R(12, "- in sequence");
+ L(13, "- successful"); R(13, "- completely duplicate");
+ L(14, "delayed acks sent"); R(14, "- with some duplicate data");
+ L(15, "retransmit timeouts"); R(15, "- out-of-order");
+ L(16, "persist timeouts"); R(16, "- duplicate acks");
+ L(17, "keepalive probes"); R(17, "- acks");
+ L(18, "- timeouts"); R(18, "- window probes");
+ R(19, "- window updates");
+ R(20, "- bad checksum");
+#undef L
+#undef R
+}
+
+static void
+domode(struct tcpstat *ret)
+{
+ const struct tcpstat *sub;
+ int divisor = 1;
+
+ switch(currentmode) {
+ case display_RATE:
+ sub = &oldstat;
+ divisor = naptime;
+ break;
+ case display_DELTA:
+ sub = &oldstat;
+ break;
+ case display_SINCE:
+ sub = &initstat;
+ break;
+ default:
+ *ret = curstat;
+ return;
+ }
+#define DO(stat) ret->stat = (curstat.stat - sub->stat) / divisor
+ DO(tcps_connattempt);
+ DO(tcps_accepts);
+ DO(tcps_connects);
+ DO(tcps_drops);
+ DO(tcps_conndrops);
+ DO(tcps_closed);
+ DO(tcps_segstimed);
+ DO(tcps_rttupdated);
+ DO(tcps_delack);
+ DO(tcps_timeoutdrop);
+ DO(tcps_rexmttimeo);
+ DO(tcps_persisttimeo);
+ DO(tcps_keeptimeo);
+ DO(tcps_keepprobe);
+ DO(tcps_keepdrops);
+
+ DO(tcps_sndtotal);
+ DO(tcps_sndpack);
+ DO(tcps_sndbyte);
+ DO(tcps_sndrexmitpack);
+ DO(tcps_sack_rexmits);
+ DO(tcps_sndacks);
+ DO(tcps_sndprobe);
+ DO(tcps_sndurg);
+ DO(tcps_sndwinup);
+ DO(tcps_sndctrl);
+
+ DO(tcps_rcvtotal);
+ DO(tcps_rcvpack);
+ DO(tcps_rcvbyte);
+ DO(tcps_rcvbadsum);
+ DO(tcps_rcvbadoff);
+ DO(tcps_rcvshort);
+ DO(tcps_rcvduppack);
+ DO(tcps_rcvdupbyte);
+ DO(tcps_rcvpartduppack);
+ DO(tcps_rcvpartdupbyte);
+ DO(tcps_rcvoopack);
+ DO(tcps_rcvoobyte);
+ DO(tcps_rcvpackafterwin);
+ DO(tcps_rcvbyteafterwin);
+ DO(tcps_rcvafterclose);
+ DO(tcps_rcvwinprobe);
+ DO(tcps_rcvdupack);
+ DO(tcps_rcvacktoomuch);
+ DO(tcps_rcvackpack);
+ DO(tcps_rcvackbyte);
+ DO(tcps_rcvwinupd);
+ DO(tcps_pawsdrop);
+ DO(tcps_predack);
+ DO(tcps_preddat);
+ DO(tcps_pcbcachemiss);
+ DO(tcps_cachedrtt);
+ DO(tcps_cachedrttvar);
+ DO(tcps_cachedssthresh);
+ DO(tcps_usedrtt);
+ DO(tcps_usedrttvar);
+ DO(tcps_usedssthresh);
+ DO(tcps_persistdrop);
+ DO(tcps_badsyn);
+ DO(tcps_mturesent);
+ DO(tcps_listendrop);
+#undef DO
+}
+
+void
+showtcp(void)
+{
+ struct tcpstat stats;
+
+ memset(&stats, 0, sizeof stats);
+ domode(&stats);
+
+#define DO(stat, row, col) \
+ mvwprintw(wnd, row, col, "%12lu", stats.stat)
+#define L(row, stat) DO(stat, row, 0)
+#define R(row, stat) DO(stat, row, 38)
+ L(1, tcps_connattempt); R(1, tcps_sndtotal);
+ L(2, tcps_accepts); R(2, tcps_sndpack);
+ L(3, tcps_connects); R(3, tcps_sndrexmitpack);
+ L(4, tcps_drops); R(4, tcps_sack_rexmits);
+ L(5, tcps_conndrops); R(5, tcps_sndacks);
+ L(6, tcps_timeoutdrop); R(6, tcps_sndprobe);
+ L(7, tcps_keepdrops); R(7, tcps_sndwinup);
+ L(8, tcps_listendrop); R(8, tcps_sndurg);
+ R(9, tcps_sndctrl);
+ R(10, tcps_mturesent);
+ R(11, tcps_rcvtotal);
+ L(12, tcps_segstimed); R(12, tcps_rcvpack);
+ L(13, tcps_rttupdated); R(13, tcps_rcvduppack);
+ L(14, tcps_delack); R(14, tcps_rcvpartduppack);
+ L(15, tcps_rexmttimeo); R(15, tcps_rcvoopack);
+ L(16, tcps_persisttimeo); R(16, tcps_rcvdupack);
+ L(17, tcps_keepprobe); R(17, tcps_rcvackpack);
+ L(18, tcps_keeptimeo); R(18, tcps_rcvwinprobe);
+ R(19, tcps_rcvwinupd);
+ R(20, tcps_rcvbadsum);
+#undef DO
+#undef L
+#undef R
+}
+
+int
+inittcp(void)
+{
+ size_t len;
+ int name[4];
+
+ name[0] = CTL_NET;
+ name[1] = PF_INET;
+ name[2] = IPPROTO_TCP;
+ name[3] = TCPCTL_STATS;
+
+ len = 0;
+ if (sysctl(name, 4, 0, &len, 0, 0) < 0) {
+ error("sysctl getting tcpstat size failed");
+ return 0;
+ }
+ if (len > sizeof curstat) {
+ error("tcpstat structure has grown--recompile systat!");
+ return 0;
+ }
+ if (sysctl(name, 4, &initstat, &len, 0, 0) < 0) {
+ error("sysctl getting tcpstat failed");
+ return 0;
+ }
+ oldstat = initstat;
+ return 1;
+}
+
+void
+resettcp(void)
+{
+ size_t len;
+ int name[4];
+
+ name[0] = CTL_NET;
+ name[1] = PF_INET;
+ name[2] = IPPROTO_TCP;
+ name[3] = TCPCTL_STATS;
+
+ len = sizeof initstat;
+ if (sysctl(name, 4, &initstat, &len, 0, 0) < 0) {
+ error("sysctl getting tcpstat failed");
+ }
+ oldstat = initstat;
+}
+
+void
+fetchtcp(void)
+{
+ int name[4];
+ size_t len;
+
+ oldstat = curstat;
+ name[0] = CTL_NET;
+ name[1] = PF_INET;
+ name[2] = IPPROTO_TCP;
+ name[3] = TCPCTL_STATS;
+ len = sizeof curstat;
+
+ if (sysctl(name, 4, &curstat, &len, 0, 0) < 0)
+ return;
+}
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