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sctp: introduce round robin stream scheduler

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This patch introduces RFC Draft ndata section 3.2 Priority Based
Scheduler (SCTP_SS_RR).

Works by maintaining a list of enqueued streams and tracking the last
one used to send data. When the datamsg is done, it switches to the next
stream.

See-also: https://tools.ietf.org/html/draft-ietf-tsvwg-sctp-ndata-13
Tested-by: Xin Long <lucien.xin@gmail.com>
Signed-off-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Marcelo Ricardo Leitner 2017-10-03 19:20:17 -03:00 • committed by David S. Miller
parent 637784ade2
commit ac1ed8b82c
5 changed files with 218 additions and 2 deletions
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2
net/sctp/stream_sched.c
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@ -122,10 +122,12 @@ static struct sctp_sched_ops sctp_sched_fcfs = {
/* API to other parts of the stack */
extern struct sctp_sched_ops sctp_sched_prio;
extern struct sctp_sched_ops sctp_sched_rr;
struct sctp_sched_ops *sctp_sched_ops[] = {
&sctp_sched_fcfs,
&sctp_sched_prio,
&sctp_sched_rr,
};
int sctp_sched_set_sched(struct sctp_association *asoc,