RE: [PATCH rtw-next v8 3/3] wifi: rtw88: time the countdown downloads from the TBTT

[Ping-Ke Shih]

Mehmet Fide <mehmet.fide@xxxxxxxxx> wrote:
> From: Mehmet Fide <mehmet.fide@xxxxxxxxxxxxxxxxxx>
> 
> The countdown downloads are queued one beacon interval apart, with no
> relation to the TBTT. A download that runs late past the next TBTT
> leaves a count out of the air.
> 
> Queue each download 10 ms after the next TBTT, read from the TSF, so it
> may run late by almost a beacon interval; a later one is followed by
> the next at once. A TSF jump, an IBSS merge or a reset, restarts the
> schedule from the next TBTT.
> 
> A TBTT just before the start may already have sent the first count; it
> is taken as the one that did, so no count is sent twice.
> 
> The USB chips raise no TBTT interrupt, so the TSF register is read. The
> beaconing interface is always on port 0: rtw_core_port_switch() moves
> an AP there, an IBSS runs alone.
> 
> Signed-off-by: Mehmet Fide <mehmet.fide@xxxxxxxxxxxxxxxxxx>

Acked-by: Ping-Ke Shih <pkshih@xxxxxxxxxxx>