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Re: ACK matching [was: TX status reporting with help of an ack queue]

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On Fri, 2008-09-19 at 11:46 +0200, Mattias Nissler wrote:

> This brings up the question whether we can do without tx status
> reporting. Does anyone know why hostapd requires the tx status? As far
> as I understand, mac80211 only uses the tx status reporting only for the
> tx rate control. Rate control algos that don't use tx status are
> definitely feasible (and in fact we'll need one for rt73).

mac80211 also uses it for reporting the sent frame to userspace on
monitor interfaces.

> I'll look into hostapd to figure out whether the tx status reporting is
> really required when I find some time.

hostapd requires this because it needs to know whether a station
acknowledged a frame or not to proceed its state machine, it's just how
it has to work. If the hardware can't deal with that I guess you can't
implement AP mode properly.

johannes

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