Keep track of the real last RTT on each net.
This will be used for Data Center congestion control, we won't want to engage it in the ECN code unless we KNOW that the RTT is less than 500us. MFC after: 1 week
This commit is contained in:
parent
f69ddfbb5f
commit
410bcbef0a
Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=218039
@ -266,7 +266,7 @@ struct sctp_nets {
|
||||
uint32_t tos_flowlabel;
|
||||
|
||||
struct timeval start_time; /* time when this net was created */
|
||||
|
||||
struct timeval last_measured_rtt;
|
||||
uint32_t marked_retrans;/* number or DATA chunks marked for timer
|
||||
* based retransmissions */
|
||||
uint32_t marked_fastretrans;
|
||||
|
@ -2500,6 +2500,13 @@ sctp_calculate_rto(struct sctp_tcb *stcb,
|
||||
/************************/
|
||||
/* get the current time */
|
||||
(void)SCTP_GETTIME_TIMEVAL(&now);
|
||||
|
||||
/*
|
||||
* Record the real time of the last RTT for use in DC-CC.
|
||||
*/
|
||||
net->last_measured_rtt = now;
|
||||
timevalsub(&net->last_measured_rtt, old);
|
||||
|
||||
/* compute the RTT value */
|
||||
if ((u_long)now.tv_sec > (u_long)old->tv_sec) {
|
||||
calc_time = ((u_long)now.tv_sec - (u_long)old->tv_sec) * 1000;
|
||||
|
Loading…
Reference in New Issue
Block a user