diff options
| author | Xin Long <lucien.xin@gmail.com> | 2023-03-07 16:23:27 -0500 |
|---|---|---|
| committer | Paolo Abeni <pabeni@redhat.com> | 2023-03-09 11:31:44 +0100 |
| commit | 42d452e7709fdb4d42376d2a97369e22cc80a5d2 (patch) | |
| tree | 7d49fc099ea487d0b8e74a338822d47143439951 /include | |
| parent | 4821a076eb602a6238528e9ebafeac853c833415 (diff) | |
| download | linux-42d452e7709fdb4d42376d2a97369e22cc80a5d2.tar.gz linux-42d452e7709fdb4d42376d2a97369e22cc80a5d2.tar.bz2 linux-42d452e7709fdb4d42376d2a97369e22cc80a5d2.zip | |
sctp: add weighted fair queueing stream scheduler
As it says in rfc8260#section-3.6 about the weighted fair queueing
scheduler:
A Weighted Fair Queueing scheduler between the streams is used. The
weight is configurable per outgoing SCTP stream. This scheduler
considers the lengths of the messages of each stream and schedules
them in a specific way to use the capacity according to the given
weights. If the weight of stream S1 is n times the weight of stream
S2, the scheduler should assign to stream S1 n times the capacity it
assigns to stream S2. The details are implementation dependent.
Interleaving user messages allows for a better realization of the
capacity usage according to the given weights.
This patch adds Weighted Fair Queueing Scheduler actually based on
the code of Fair Capacity Scheduler by adding fc_weight into struct
sctp_stream_out_ext and taking it into account when sorting stream->
fc_list in sctp_sched_fc_sched() and sctp_sched_fc_dequeue_done().
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>
Diffstat (limited to 'include')
| -rw-r--r-- | include/net/sctp/stream_sched.h | 1 | ||||
| -rw-r--r-- | include/net/sctp/structs.h | 1 | ||||
| -rw-r--r-- | include/uapi/linux/sctp.h | 3 |
3 files changed, 4 insertions, 1 deletions
diff --git a/include/net/sctp/stream_sched.h b/include/net/sctp/stream_sched.h index 913170710adb..572d73fdcd5e 100644 --- a/include/net/sctp/stream_sched.h +++ b/include/net/sctp/stream_sched.h @@ -59,5 +59,6 @@ void sctp_sched_ops_register(enum sctp_sched_type sched, void sctp_sched_ops_prio_init(void); void sctp_sched_ops_rr_init(void); void sctp_sched_ops_fc_init(void); +void sctp_sched_ops_wfq_init(void); #endif /* __sctp_stream_sched_h__ */ diff --git a/include/net/sctp/structs.h b/include/net/sctp/structs.h index 2f1c9f50b352..a0933efd93c3 100644 --- a/include/net/sctp/structs.h +++ b/include/net/sctp/structs.h @@ -1432,6 +1432,7 @@ struct sctp_stream_out_ext { struct { struct list_head fc_list; __u32 fc_length; + __u16 fc_weight; }; }; }; diff --git a/include/uapi/linux/sctp.h b/include/uapi/linux/sctp.h index 6814c5a1c4bc..b7d91d4cf0db 100644 --- a/include/uapi/linux/sctp.h +++ b/include/uapi/linux/sctp.h @@ -1212,7 +1212,8 @@ enum sctp_sched_type { SCTP_SS_PRIO, SCTP_SS_RR, SCTP_SS_FC, - SCTP_SS_MAX = SCTP_SS_FC + SCTP_SS_WFQ, + SCTP_SS_MAX = SCTP_SS_WFQ }; /* Probe Interval socket option */ |