Re: iwlwifi aggregation info

[Johannes Berg <johannes@sipsolutions.net>]

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On Tue, 2008-07-29 at 18:55 +0300, Tomas Winkler wrote:

> So why do you need 4 HW queues for QoS, every vendor now implements it
> that way today. There is only one medium, you don't put 4 packets on
> the air at the same time.

The single medium part is true, but the scheduling decision is best made
at the air interface, otherwise you'd need to be able to kill the hw
fifo when a high-prio frame comes in to preempt other frames.

> Now imaging that withing single queue you
> have another priority level why it is wrong to add another queue for
> it?

What makes you think aggregation is another priority level though? I
don't see any evidence that it is, and everybody I've asked so far seems
to agree with me.

johannes

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