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Re: [RFC 2/2] ath9k: fix powersave frame filtering/buffering in AP mode

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On Tue, Feb 8, 2011 at 10:26 PM, Felix Fietkau <nbd@xxxxxxxxxxx> wrote:
> This patch fixes a long standing issue of pending packets in the queue being
> sent (and retransmitted many times) to sleeping stations.
> This was made worse by aggregation through driver-internal retransmitting
> of A-MDPU subframes.

Nice. :) Just one thought, shouldn't there be one more call to
ieee80211_sta_set_tim() somewhere? I'm thinking there might be a race
condition otherwise where the tid queues are empty on sta_notify but
then later some failed/filtered A-MPDU subframes get queued...

Also, just curious so feel free to answer or not, but how does the
hardware handle the ps filter thing? Does it have a ps bit for every
dst address? How many different dsts can it keep track of?

/Björn
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