diff options
Diffstat (limited to 'sys/netinet/tcp_timer.h')
| -rw-r--r-- | sys/netinet/tcp_timer.h | 60 |
1 files changed, 35 insertions, 25 deletions
diff --git a/sys/netinet/tcp_timer.h b/sys/netinet/tcp_timer.h index 3c0f39e..c727559 100644 --- a/sys/netinet/tcp_timer.h +++ b/sys/netinet/tcp_timer.h @@ -38,17 +38,6 @@ #define _NETINET_TCP_TIMER_H_ /* - * Definitions of the TCP timers. These timers are counted - * down PR_SLOWHZ times a second. - */ -#define TCPT_NTIMERS 4 - -#define TCPT_REXMT 0 /* retransmit */ -#define TCPT_PERSIST 1 /* retransmit persistence */ -#define TCPT_KEEP 2 /* keep alive */ -#define TCPT_2MSL 3 /* 2*msl quiet time timer */ - -/* * 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 @@ -87,22 +76,22 @@ /* * Time constants. */ -#define TCPTV_MSL ( 30*PR_SLOWHZ) /* max seg lifetime (hah!) */ +#define TCPTV_MSL ( 30*hz) /* 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 ( 3*hz) /* assumed RTO if no info */ +#define TCPTV_SRTTDFLT ( 3*hz) /* 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*hz) /* retransmit persistence */ +#define TCPTV_PERSMAX ( 60*hz) /* 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*hz) /* initial connect keepalive */ +#define TCPTV_KEEP_IDLE (120*60*hz) /* dflt time before probing */ +#define TCPTV_KEEPINTVL ( 75*hz) /* 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 ( 1*hz) /* minimum allowable value */ +#define TCPTV_REXMTMAX ( 64*hz) /* max allowable REXMT value */ #define TCPTV_TWTRUNC 8 /* RTO factor to truncate TW */ @@ -110,6 +99,8 @@ #define TCP_MAXRXTSHIFT 12 /* maximum retransmits */ +#define TCPTV_DELACK (hz / PR_FASTHZ) /* 200mS timeout */ + #ifdef TCPTIMERS static char *tcptimers[] = { "REXMT", "PERSIST", "KEEP", "2MSL" }; @@ -118,20 +109,39 @@ static char *tcptimers[] = /* * 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)) \ (tv) = (tvmin); \ else if ((u_long)(tv) > (u_long)(tvmax)) \ (tv) = (tvmax); \ -} +} while(0) + +/* + * Convert slow-timeout ticks to timer ticks. We don't really want to do + * this as it is rather expensive, so this is only a transitional stage + * until we are able to update all the code which counts timer ticks. + */ +#define TCPT_TICKS(stt) ((stt) * hz / PR_SLOWHZ) +#define TCPT_SLOWHZ(tt) (((tt) * PR_SLOWHZ) / hz) #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_msl; extern int tcp_ttl; /* time to live for TCP segs */ extern int tcp_backoff[]; -#endif -#endif +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 /* !_NETINET_TCP_TIMER_H_ */ |
