Re: [PATCH] mac80211: allow DMA optimisation

Johannes Berg
2009-08-07T18:45:26Z

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On Fri, 2009-08-07 at 20:21 +0200, Ivo van Doorn wrote:

> > Initially, yes, but I think we should eventually use it for sending out
> > multiple frames after restarting queues etc. For instance after
> > scanning, we could send out a bunch of frames at once.
>
> This would work for PCI devices, but USB devices can spoil the
> fun (as usual) because those devices use the queue in the hardware
> and you can't control the actual "kick".

Sure, but it's meant as an optimisation anyway.

johannes

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