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Re: [PATCH 3.12 2/2] mac80211: update sta->last_rx on acked tx frames

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On Mon, 2013-09-30 at 11:46 +0200, Felix Fietkau wrote:
> On 2013-09-30 11:10 AM, Johannes Berg wrote:
> > On Sun, 2013-09-29 at 21:39 +0200, Felix Fietkau wrote:
> >> When clients are idle for too long, hostapd sends nullfunc frames for
> >> probing. When those are acked by the client, the idle time needs to be
> >> updated.
> >> 
> >> To make this work (and to avoid unnecessary probing), update sta->last_rx
> >> whenever an ACK was received for a tx packet. Only do this if the flag
> >> IEEE80211_HW_REPORTS_TX_ACK_STATUS is set.
> > 
> > Why that last bit? If we got an ack status, wouldn't it be OK to do
> > either way? Or are you saying drivers are lying more often than not
> > otherwise?
> I added that just in case, some drivers might not be fully reliable wrt.
> reporting the ACK status.

Ok, I'll apply it.

johannes

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