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Re: [RFC] Redesigning aggregation on mac80211

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On Mon, 2008-09-15 at 12:03 -0700, Luis R. Rodriguez wrote:

> I'll start with Atheros hardware and mac80211. Atheros hardware uses 4
> main HW queues, one for each AC, and we also have one for beacons,
> another for queued stuff after beacon (aka "Crap After Beacon") where
> things like queued frames for broadcast / multicast or for frames for
> stations in power save mode, and I think another hw queue for uapsd.
> Right now mac80211 queues skb's for drivers into the netdev_queues.
> Under the current mac80211 design we have 4 netdev_queues, one for
> each AC and then there is a number of "aggregation queues". We
> essentially just declare one "aggregation" queue as we do our own
> queue mapping internally to our own hardware queues -- and that
> consist of just mapping frames to each HQ queue as per AC.

Except that declaring one "aggregation queue" also limits you to a
single aggregation session, no big deal in STA mode but punishable by
death in AP mode.

> Anyone know about Marvell's stuff? How about Broadcom?

Consider Broadcom's stuff to work just as yours. Details may differ, but
not by much.

johannes

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