Re: [Lksctp-developers] congestion, sender side

[Michael T. <Mic...@lu...>]

On Nov 24, 2009, at 5:48 PM, Cristian Constantin wrote:

> hi!
> 
> suppose that the link on which an sctp association was setup is getting
> congested. the local send buffers are getting full with data
> to be sent to the remote peer. also: in the protocol running over
> sctp there are packets (management packets) having a higher priority 
> than the other ones (data packets).
> 
> now, in this conditions of congestion you want that a management packet is 
> sent _before_ all the data that is filling up the send buffer.
> 
> a. it seems that multiple streams does NOT help here since
> the cwnd is per association.
> 
> b. what about sending it unordered? is it going to be put in front of
> all the other ones in the buffer and be sent as soon as this is
> possible?
> 
What helps are having priorities assigned to streams and scheduling
of the streams. Robin is working on it and there is a prototype
implementation. But it is for FreeBSD, not for LKSCTP...
Contact Robin and me if you want further information.

Best regards
Michael

> thanks!
> bye now!
> cristian
> 
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