X-Git-Url: https://git.saurik.com/apple/xnu.git/blobdiff_plain/1c79356b52d46aa6b508fb032f5ae709b1f2897b..060df5ea7c632b1ac8cc8aac1fb59758165c2084:/bsd/netinet/tcp_timer.h diff --git a/bsd/netinet/tcp_timer.h b/bsd/netinet/tcp_timer.h index 03d29b83c..c4ea59c6b 100644 --- a/bsd/netinet/tcp_timer.h +++ b/bsd/netinet/tcp_timer.h @@ -1,23 +1,29 @@ /* * Copyright (c) 2000 Apple Computer, Inc. All rights reserved. * - * @APPLE_LICENSE_HEADER_START@ + * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ * - * The contents of this file constitute Original Code as defined in and - * are subject to the Apple Public Source License Version 1.1 (the - * "License"). You may not use this file except in compliance with the - * License. Please obtain a copy of the License at - * http://www.apple.com/publicsource and read it before using this file. + * 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. 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. * - * This Original Code and all software distributed under the License are - * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER + * 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 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, - * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT. Please see the - * License for the specific language governing rights and limitations - * under the License. + * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. + * 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 @@ -52,10 +58,12 @@ * SUCH DAMAGE. * * @(#)tcp_timer.h 8.1 (Berkeley) 6/10/93 + * $FreeBSD: src/sys/netinet/tcp_timer.h,v 1.18 1999/12/29 04:41:03 peter Exp $ */ #ifndef _NETINET_TCP_TIMER_H_ #define _NETINET_TCP_TIMER_H_ +#include /* * Definitions of the TCP timers. These timers are counted @@ -104,25 +112,28 @@ * amount of time probing, then we drop the connection. */ +#ifdef PRIVATE + /* * Time constants. */ -#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 */ @@ -135,23 +146,38 @@ static char *tcptimers[] = { "REXMT", "PERSIST", "KEEP", "2MSL" }; #endif +#ifdef KERNEL /* * Force a time value to be in a certain range. */ -#define TCPT_RANGESET(tv, value, tvmin, tvmax) { \ +#define TCPT_RANGESET(tv, value, tvmin, tvmax) do { \ (tv) = (value); \ - if ((u_long)(tv) < (u_long)(tvmin)) \ + if ((uint32_t)(tv) < (uint32_t)(tvmin)) \ (tv) = (tvmin); \ - else if ((u_long)(tv) > (u_long)(tvmax)) \ + else if ((uint32_t)(tv) > (uint32_t)(tvmax)) \ (tv) = (tvmax); \ -} +} while(0) + +#define TCP_KEEPIDLE(tp) \ + (tp->t_keepidle && (tp->t_inpcb->inp_socket->so_options & SO_KEEPALIVE) ? \ + tp->t_keepidle : tcp_keepidle) -#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_maxpersistidle; +extern int tcp_msl; extern int tcp_ttl; /* time to live for TCP segs */ extern int tcp_backoff[]; -#endif -#endif +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 /* PRIVATE */ +#endif /* !_NETINET_TCP_TIMER_H_ */ +