xnu-1228.9.59.tar.gz

[apple/xnu.git] / bsd / netinet / tcp_timer.h

diff --git a/bsd/netinet/tcp_timer.h b/bsd/netinet/tcp_timer.h
index dea6ce3c0ee38f02b8fbd16bf9403d277afce4e7..ef29f41a3063481839371c7e5c76b527ae109176 100644 (file)
--- a/bsd/netinet/tcp_timer.h
+++ b/bsd/netinet/tcp_timer.h
@@ -1,16 +1,19 @@
 /*
  * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
  *
- * @APPLE_LICENSE_HEADER_START@
- * 
- * Copyright (c) 1999-2003 Apple Computer, Inc.  All Rights Reserved.
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
  * 
  * This file contains Original Code and/or Modifications of Original Code
  * as defined in and that are subject to the Apple Public Source License
  * Version 2.0 (the 'License'). You may not use this file except in
- * compliance with the License. Please obtain a copy of the License at
- * http://www.opensource.apple.com/apsl/ and read it before using this
- * file.
+ * compliance with the License. The rights granted to you under the License
+ * may not be used to create, or enable the creation or redistribution of,
+ * unlawful or unlicensed copies of an Apple operating system, or to
+ * circumvent, violate, or enable the circumvention or violation of, any
+ * terms of an Apple operating system software license agreement.
+ * 
+ * Please obtain a copy of the License at
+ * http://www.opensource.apple.com/apsl/ and read it before using this file.
  * 
  * The Original Code and all software distributed under the License are
  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
@@ -20,7 +23,7 @@
  * Please see the License for the specific language governing rights and
  * limitations under the License.
  * 
- * @APPLE_LICENSE_HEADER_END@
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
  */
 /*
  * Copyright (c) 1982, 1986, 1993
@@ -109,26 +112,28 @@
  * amount of time probing, then we drop the connection.
  */
 
+#ifdef PRIVATE
+
 /*
  * Time constants.
  */
-#ifdef __APPLE_API_PRIVATE
-#define        TCPTV_MSL       ( 30*PR_SLOWHZ)         /* max seg lifetime (hah!) */
+#define        TCPTV_MSL       ( 15*TCP_RETRANSHZ)             /* max seg lifetime (hah!) */
 #define        TCPTV_SRTTBASE  0                       /* base roundtrip time;
                                                   if 0, no idea yet */
-#define        TCPTV_RTOBASE   (  3*PR_SLOWHZ)         /* assumed RTO if no info */
-#define        TCPTV_SRTTDFLT  (  3*PR_SLOWHZ)         /* assumed RTT if no info */
+#define        TCPTV_RTOBASE   (  1*TCP_RETRANSHZ)             /* assumed RTO if no info */
+#define        TCPTV_SRTTDFLT  (  1*TCP_RETRANSHZ)             /* assumed RTT if no info */
 
-#define        TCPTV_PERSMIN   (  5*PR_SLOWHZ)         /* retransmit persistence */
-#define        TCPTV_PERSMAX   ( 60*PR_SLOWHZ)         /* maximum persist interval */
+#define        TCPTV_PERSMIN   (  5*TCP_RETRANSHZ)             /* retransmit persistence */
+#define        TCPTV_PERSMAX   ( 60*TCP_RETRANSHZ)             /* maximum persist interval */
 
-#define        TCPTV_KEEP_INIT ( 75*PR_SLOWHZ)         /* initial connect keep alive */
-#define        TCPTV_KEEP_IDLE (120*60*PR_SLOWHZ)      /* dflt time before probing */
-#define        TCPTV_KEEPINTVL ( 75*PR_SLOWHZ)         /* default probe interval */
+#define        TCPTV_KEEP_INIT ( 75*TCP_RETRANSHZ)             /* initial connect keep alive */
+#define        TCPTV_KEEP_IDLE (120*60*TCP_RETRANSHZ)  /* dflt time before probing */
+#define        TCPTV_KEEPINTVL ( 75*TCP_RETRANSHZ)             /* default probe interval */
 #define        TCPTV_KEEPCNT   8                       /* max probes before drop */
 
-#define        TCPTV_MIN       (  1*PR_SLOWHZ)         /* minimum allowable value */
-#define        TCPTV_REXMTMAX  ( 64*PR_SLOWHZ)         /* max allowable REXMT value */
+//#define      TCPTV_MIN       (  3*TCP_RETRANSHZ)             /* minimum allowable value */
+#define        TCPTV_MIN       (1)     /* minimum allowable value */
+#define        TCPTV_REXMTMAX  ( 64*TCP_RETRANSHZ)             /* max allowable REXMT value */
 
 #define TCPTV_TWTRUNC  8                       /* RTO factor to truncate TW */
 
@@ -136,13 +141,12 @@
 
 #define        TCP_MAXRXTSHIFT 12                      /* maximum retransmits */
 
-#define        TCPTV_DELACK    PR_FASTHZ               /* 125ms timeout */
-
 #ifdef TCPTIMERS
 static char *tcptimers[] =
     { "REXMT", "PERSIST", "KEEP", "2MSL" };
 #endif
 
+#ifdef KERNEL
 /*
  * Force a time value to be in a certain range.
  */
@@ -154,24 +158,26 @@ static char *tcptimers[] =
                (tv) = (tvmax); \
 } while(0)
 
-#ifdef KERNEL
+#define TCP_KEEPIDLE(tp) \
+       (tp->t_keepidle && (tp->t_inpcb->inp_socket->so_options & SO_KEEPALIVE) ? \
+               tp->t_keepidle : tcp_keepidle)
+
 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_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));
+void   tcp_timer_2msl(void *xtp);
+void   tcp_timer_keep(void *xtp);
+void   tcp_timer_persist(void *xtp);
+void   tcp_timer_rexmt(void *xtp);
+void   tcp_timer_delack(void *xtp);
 
 #endif /* KERNEL */
-#endif /* __APPLE_API_PRIVATE */
-
+#endif /* PRIVATE */
 #endif /* !_NETINET_TCP_TIMER_H_ */
+