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Use the monotonically increasing slow timer timestamp provided by 

the protocol dispatch layer for TCP timers.  This saves having to
modify a potentially large number of timer values (which were shorts,
and expanded to ... a lot of code on the Alpha).
This commit is contained in:
thorpej 1998-05-06 01:24:38 +00:00
parent 1ffa60ac01
commit 34e34c985a
2 changed files with 19 additions and 3 deletions
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18
sys/netinet/tcp_timer.h
View File

@ -1,4 +1,4 @@
/* $NetBSD: tcp_timer.h,v 1.7 1998/02/10 01:27:16 perry Exp $ */
/* $NetBSD: tcp_timer.h,v 1.8 1998/05/06 01:24:38 thorpej Exp $ */
/*
* Copyright (c) 1982, 1986, 1993
@ -113,6 +113,22 @@ char *tcptimers[] =
{ "REXMT", "PERSIST", "KEEP", "2MSL" };
#endif
/*
* Arm, disarm, and test TCP timers.
*/
#define TCP_TIMER_ARM(tp, timer, nticks) \
PRT_SLOW_ARM((tp)->t_timer[(timer)], (nticks))
#define TCP_TIMER_DISARM(tp, timer) \
(tp)->t_timer[(timer)] = 0
#define TCP_TIMER_ISARMED(tp, timer) \
((tp)->t_timer[(timer)] != 0)
#define TCP_TIMER_ISFIRING(tp, timer) \
(TCP_TIMER_ISARMED((tp), (timer)) && \
PRT_SLOW_ISEXPIRED((tp)->t_timer[(timer)]))
/*
* Force a time value to be in a certain range.
*/

4
sys/netinet/tcp_var.h
View File

@ -1,4 +1,4 @@
/* $NetBSD: tcp_var.h,v 1.47 1998/05/02 04:21:59 thorpej Exp $ */
/* $NetBSD: tcp_var.h,v 1.48 1998/05/06 01:24:38 thorpej Exp $ */
/*-
* Copyright (c) 1997, 1998 The NetBSD Foundation, Inc.
@ -84,8 +84,8 @@
*/
struct tcpcb {
struct ipqehead segq; /* sequencing queue */
u_int t_timer[TCPT_NTIMERS]; /* tcp timers */
short t_state; /* state of this connection */
short t_timer[TCPT_NTIMERS]; /* tcp timers */
short t_rxtshift; /* log(2) of rexmt exp. backoff */
short t_rxtcur; /* current retransmit value */
short t_dupacks; /* consecutive dup acks recd */