Index: trunk/src/emx/include/netinet/tcp_time.h
===================================================================
--- trunk/src/emx/include/netinet/tcp_time.h	(revision 176)
+++ trunk/src/emx/include/netinet/tcp_time.h	(revision 176)
@@ -0,0 +1,4 @@
+#ifndef _NETINET_TCP_TIME_H_
+#define _NETINET_TCP_TIME_H_
+#include <netinet/tcp_timer.h>
+#endif
Index: trunk/src/emx/include/netinet/tcp_timer.h
===================================================================
--- trunk/src/emx/include/netinet/tcp_timer.h	(revision 176)
+++ trunk/src/emx/include/netinet/tcp_timer.h	(revision 176)
@@ -0,0 +1,164 @@
+/*
+ * Copyright (c) 1982, 1986, 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.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 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.
+ *
+ *	@(#)tcp_timer.h	8.1 (Berkeley) 6/10/93
+ * $FreeBSD: src/sys/netinet/tcp_timer.h,v 1.18.2.1 2002/08/16 22:16:39 dillon Exp $
+ */
+
+#ifndef _NETINET_TCP_TIMER_H_
+#define _NETINET_TCP_TIMER_H_
+#ifndef TCPV40HDRS
+
+/*
+ * The TCPT_REXMT timer is used to force retransmissions.
+ * The TCP has the TCPT_REXMT timer set whenever segments
+ * have been sent for which ACKs are expected but not yet
+ * received.  If an ACK is received which advances tp->snd_una,
+ * then the retransmit timer is cleared (if there are no more
+ * outstanding segments) or reset to the base value (if there
+ * are more ACKs expected).  Whenever the retransmit timer goes off,
+ * we retransmit one unacknowledged segment, and do a backoff
+ * on the retransmit timer.
+ *
+ * The TCPT_PERSIST timer is used to keep window size information
+ * flowing even if the window goes shut.  If all previous transmissions
+ * have been acknowledged (so that there are no retransmissions in progress),
+ * and the window is too small to bother sending anything, then we start
+ * the TCPT_PERSIST timer.  When it expires, if the window is nonzero,
+ * we go to transmit state.  Otherwise, at intervals send a single byte
+ * into the peer's window to force him to update our window information.
+ * We do this at most as often as TCPT_PERSMIN time intervals,
+ * but no more frequently than the current estimate of round-trip
+ * packet time.  The TCPT_PERSIST timer is cleared whenever we receive
+ * a window update from the peer.
+ *
+ * The TCPT_KEEP timer is used to keep connections alive.  If an
+ * connection is idle (no segments received) for TCPTV_KEEP_INIT amount of time,
+ * but not yet established, then we drop the connection.  Once the connection
+ * is established, if the connection is idle for TCPTV_KEEP_IDLE time
+ * (and keepalives have been enabled on the socket), we begin to probe
+ * the connection.  We force the peer to send us a segment by sending:
+ *	<SEQ=SND.UNA-1><ACK=RCV.NXT><CTL=ACK>
+ * This segment is (deliberately) outside the window, and should elicit
+ * an ack segment in response from the peer.  If, despite the TCPT_KEEP
+ * initiated segments we cannot elicit a response from a peer in TCPT_MAXIDLE
+ * amount of time probing, then we drop the connection.
+ */
+
+/*
+ * Time constants.
+ */
+#define hz   PR_SLOWHZ /* OS2 mapping */
+#if 0 /* not on OS/2 */
+#define	TCPTV_MSL	( 30*hz)		/* max seg lifetime (hah!) */
+#endif
+#define	TCPTV_SRTTBASE	0			/* base roundtrip time;
+						   if 0, no idea yet */
+#if 0 /* not on OS/2 */
+#define	TCPTV_RTOBASE	(  3*hz)		/* assumed RTO if no info */
+#endif
+#define	TCPTV_SRTTDFLT	(  3*hz)		/* assumed RTT if no info */
+
+#define	TCPTV_PERSMIN	(  5*hz)		/* retransmit persistence */
+#define	TCPTV_PERSMAX	( 60*hz)		/* maximum persist interval */
+
+#define	TCPTV_KEEP_INIT	( 75*hz)		/* initial connect keepalive */
+#define	TCPTV_KEEP_IDLE	(120*60*hz)		/* dflt time before probing */
+#define	TCPTV_KEEPINTVL	( 75*hz)		/* default probe interval */
+#if 0 /* not on OS/2 */
+#define	TCPTV_KEEPCNT	8			/* max probes before drop */
+#endif
+
+/*
+ * TCPTV_MIN represents the minimum allowed retransmit interval.  It
+ * is currently one second but will ultimately be reduced to 3 ticks
+ * for algorithmic stability, leaving the 200ms variance to deal with
+ * delayed-acks, protocol overheads.  A 1 second minimum badly breaks
+ * throughput on any network faster then a modem that has minor but
+ * continuous packet loss unrelated to congestion, such as on a wireless
+ * network.
+ */
+#define	TCPTV_MIN	( hz )			/* minimum allowable value */
+#if 0 /* not on OS/2 */
+#define TCPTV_CPU_VAR	( hz/5 )		/* cpu variance (200ms) */
+#endif
+#define	TCPTV_REXMTMAX	( 64*hz)		/* max allowable REXMT value */
+
+#define TCPTV_TWTRUNC	8			/* RTO factor to truncate TW */
+#if 0 /* not on OS/2 */
+#define	TCP_LINGERTIME	120			/* linger at most 2 minutes */
+#endif
+#define	TCP_MAXRXTSHIFT	12			/* maximum retransmits */
+
+#if 0 /* not on OS/2 */
+#define	TCPTV_DELACK	(hz / PR_FASTHZ / 2)	/* 100ms timeout */
+
+#ifdef	TCPTIMERS
+static char *tcptimers[] =
+    { "REXMT", "PERSIST", "KEEP", "2MSL" };
+#endif
+
+/*
+ * Force a time value to be in a certain range.
+ */
+#define	TCPT_RANGESET(tv, value, tvmin, tvmax) do { \
+	(tv) = (value) + tcp_rexmit_slop; \
+	if ((u_long)(tv) < (u_long)(tvmin)) \
+		(tv) = (tvmin); \
+	else if ((u_long)(tv) > (u_long)(tvmax)) \
+		(tv) = (tvmax); \
+} while(0)
+
+#ifdef _KERNEL
+extern int tcp_keepinit;		/* time to establish connection */
+extern int tcp_keepidle;		/* time before keepalive probes begin */
+extern int tcp_keepintvl;		/* time between keepalive probes */
+extern int tcp_maxidle;			/* time to drop after starting probes */
+extern int tcp_delacktime;		/* time before sending a delayed ACK */
+extern int tcp_maxpersistidle;
+extern int tcp_rexmit_min;
+extern int tcp_rexmit_slop;
+extern int tcp_msl;
+extern int tcp_ttl;			/* time to live for TCP segs */
+extern int tcp_backoff[];
+
+void	tcp_timer_2msl __P((void *xtp));
+void	tcp_timer_keep __P((void *xtp));
+void	tcp_timer_persist __P((void *xtp));
+void	tcp_timer_rexmt __P((void *xtp));
+void	tcp_timer_delack __P((void *xtp));
+
+#endif /* _KERNEL */
+#endif /* not on OS/2 */
+
+#endif /*!TCPV40HDRS*/
+#endif /* !_NETINET_TCP_TIMER_H_ */
