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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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11
include/net/sctp/structs.h
View File

@@ -1348,6 +1348,10 @@ struct sctp_stream_out_ext {
struct list_head prio_list;
struct sctp_stream_priorities *prio_head;
};
/* Fields used by RR scheduler */
struct {
struct list_head rr_list;
};
};
};
@@ -1374,6 +1378,13 @@ struct sctp_stream {
/* List of priorities scheduled */
struct list_head prio_list;
};
/* Fields used by RR scheduler */
struct {
/* List of streams scheduled */
struct list_head rr_list;
/* The next stream stream in line */
struct sctp_stream_out_ext *rr_next;
};
};
};