diff options
| author | jlemon <jlemon@FreeBSD.org> | 1999-08-30 21:17:07 +0000 |
|---|---|---|
| committer | jlemon <jlemon@FreeBSD.org> | 1999-08-30 21:17:07 +0000 |
| commit | 628be0515eace470ecc5e0055dbc9cee71e2adb9 (patch) | |
| tree | 541ccb366454973a67b93f62b3164fc1a98eced0 /sys/netinet/tcp_usrreq.c | |
| parent | 6aee941745b6eecfd2d3e23b412969b4ddf18102 (diff) | |
| download | FreeBSD-src-628be0515eace470ecc5e0055dbc9cee71e2adb9.zip FreeBSD-src-628be0515eace470ecc5e0055dbc9cee71e2adb9.tar.gz | |
Restructure TCP timeout handling:
- eliminate the fast/slow timeout lists for TCP and instead use a
callout entry for each timer.
- increase the TCP timer granularity to HZ
- implement "bad retransmit" recovery, as presented in
"On Estimating End-to-End Network Path Properties", by Allman and Paxson.
Submitted by: jlemon, wollmann
Diffstat (limited to 'sys/netinet/tcp_usrreq.c')
| -rw-r--r-- | sys/netinet/tcp_usrreq.c | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/sys/netinet/tcp_usrreq.c b/sys/netinet/tcp_usrreq.c index 231da99..e50dcb0 100644 --- a/sys/netinet/tcp_usrreq.c +++ b/sys/netinet/tcp_usrreq.c @@ -537,7 +537,7 @@ tcp_connect(tp, nam, p) if (oinp) { if (oinp != inp && (otp = intotcpcb(oinp)) != NULL && otp->t_state == TCPS_TIME_WAIT && - otp->t_duration < TCPTV_MSL && + (ticks - otp->t_starttime) < tcp_msl && (otp->t_flags & TF_RCVD_CC)) otp = tcp_close(otp); else @@ -563,7 +563,7 @@ tcp_connect(tp, nam, p) soisconnecting(so); tcpstat.tcps_connattempt++; tp->t_state = TCPS_SYN_SENT; - tp->t_timer[TCPT_KEEP] = tcp_keepinit; + callout_reset(tp->tt_keep, tcp_keepinit, tcp_timer_keep, tp); tp->iss = tcp_iss; tcp_iss += TCP_ISSINCR/2; tcp_sendseqinit(tp); @@ -810,7 +810,8 @@ tcp_usrclosed(tp) soisdisconnected(tp->t_inpcb->inp_socket); /* To prevent the connection hanging in FIN_WAIT_2 forever. */ if (tp->t_state == TCPS_FIN_WAIT_2) - tp->t_timer[TCPT_2MSL] = tcp_maxidle; + callout_reset(tp->tt_2msl, tcp_maxidle, + tcp_timer_2msl, tp); } return (tp); } |
