diff options
Diffstat (limited to 'sys/netinet/tcp_timewait.c')
| -rw-r--r-- | sys/netinet/tcp_timewait.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/sys/netinet/tcp_timewait.c b/sys/netinet/tcp_timewait.c index 9267ea2..e61d541 100644 --- a/sys/netinet/tcp_timewait.c +++ b/sys/netinet/tcp_timewait.c @@ -193,6 +193,11 @@ static int tcp_inflight_debug = 0; SYSCTL_INT(_net_inet_tcp_inflight, OID_AUTO, debug, CTLFLAG_RW, &tcp_inflight_debug, 0, "Debug TCP inflight calculations"); +static int tcp_inflight_rttthresh; +SYSCTL_PROC(_net_inet_tcp_inflight, OID_AUTO, rttthresh, CTLTYPE_INT|CTLFLAG_RW, + &tcp_inflight_rttthresh, 0, sysctl_msec_to_ticks, "I", + "RTT threshold below which inflight will deactivate itself"); + static int tcp_inflight_min = 6144; SYSCTL_INT(_net_inet_tcp_inflight, OID_AUTO, min, CTLFLAG_RW, &tcp_inflight_min, 0, "Lower-bound for TCP inflight window"); @@ -253,6 +258,7 @@ tcp_init() tcp_msl = TCPTV_MSL; tcp_rexmit_min = TCPTV_MIN; tcp_rexmit_slop = TCPTV_CPU_VAR; + tcp_inflight_rttthresh = TCPTV_INFLIGHT_RTTTHRESH; INP_INFO_LOCK_INIT(&tcbinfo, "tcp"); LIST_INIT(&tcb); @@ -1937,7 +1943,7 @@ tcp_xmit_bandwidth_limit(struct tcpcb *tp, tcp_seq ack_seq) * If inflight_enable is disabled in the middle of a tcp connection, * make sure snd_bwnd is effectively disabled. */ - if (tcp_inflight_enable == 0) { + if (tcp_inflight_enable == 0 || tp->t_rttlow < tcp_inflight_rttthresh) { tp->snd_bwnd = TCP_MAXWIN << TCP_MAX_WINSHIFT; tp->snd_bandwidth = 0; return; |
