Xin Long 4821a076eb sctp: add fair capacity stream scheduler ... As it says in rfc8260#section-3.5 about the fair capacity scheduler: A fair capacity distribution between the streams is used. This scheduler considers the lengths of the messages of each stream and schedules them in a specific way to maintain an equal capacity for all streams. The details are implementation dependent. interleaving user messages allows for a better realization of the fair capacity usage. This patch adds Fair Capacity Scheduler based on the foundations added by commit 5bbbbe32a4 ("sctp: introduce stream scheduler foundations"): A fc_list and a fc_length are added into struct sctp_stream_out_ext and a fc_list is added into struct sctp_stream. In .enqueue, when there are chunks enqueued into a stream, this stream will be linked into stream-> fc_list by its fc_list ordered by its fc_length. In .dequeue, it always picks up the 1st skb from stream->fc_list. In .dequeue_done, fc_length is increased by chunk's len and update its location in stream->fc_list according to the its new fc_length. Note that when the new fc_length overflows in .dequeue_done, instead of resetting all fc_lengths to 0, we only reduced them by U32_MAX / 4 to avoid a moment of imbalance in the scheduling, as Marcelo suggested. Signed-off-by: Xin Long <lucien.xin@gmail.com> Acked-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com> Signed-off-by: Paolo Abeni <pabeni@redhat.com>		2023-03-09 11:31:44 +01:00
..
auth.h	sctp: add sctp_auth_init and sctp_auth_free	2019-08-19 18:27:29 -07:00
checksum.h	sctp: change to include linux/sctp.h in net/sctp/checksum.h	2022-11-17 21:43:34 -08:00
command.h	sctp: add the probe timer in transport for PLPMTUD	2021-06-22 11:28:52 -07:00
constants.h	sctp: move 198 addresses from unusable to private scope	2021-07-01 11:47:13 -07:00
sctp.h	sctp: add dif and sdif check in asoc and ep lookup	2022-11-18 11:42:54 +00:00
sm.h	sctp: fix transport encap_port update in sctp_vtag_verify	2021-10-15 11:21:10 +01:00
stream_interleave.h	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 104	2019-05-24 17:39:00 +02:00
stream_sched.h	sctp: add fair capacity stream scheduler	2023-03-09 11:31:44 +01:00
structs.h	sctp: add fair capacity stream scheduler	2023-03-09 11:31:44 +01:00
tsnmap.h	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 104	2019-05-24 17:39:00 +02:00
ulpevent.h	sctp: fix typo sctp_ulpevent_nofity_peer_addr_change	2020-05-27 15:08:02 -07:00
ulpqueue.h	sctp: remove unnecessary NULL check in sctp_association_init()	2022-10-20 21:43:10 -07:00