RE: [PATCH v4 3/7] wifi: rtw88: tx: extend the TX report purge timeout to RTL8723BS

[Ping-Ke Shih]

luka.gejak@xxxxxxxxx <luka.gejak@xxxxxxxxx> wrote:
> From: Luka Gejak <luka.gejak@xxxxxxxxx>
> 
> Commit c80788f7c5ae ("wifi: rtw88: increase TX report timeout to fix
> race condition") raised the purge timeout to 2500 ms for the RTL8723DU,
> because the firmware can stay off channel during background scans for
> longer than the 500 ms default, which delays the TX reports and lets the
> purge timer drop the tracking skbs. The host stack then reads the missing
> status as loss and collapses TCP throughput.
> 
> The RTL8723BS runs the same vendor firmware over a slower SDIO host and
> hits the same race. Testers on ARM SDIO boards see "failed to get tx
> report from firmware" under load, with the same throughput collapse.
> Extend the 2500 ms timeout to the RTL8723BS.
> 
> Reported-by: Peter Robinson <pbrobinson@xxxxxxxxx>
> Closes:
> https://lore.kernel.org/all/CALeDE9PgQmpMfDt1DgfLD4tBFGH0MZ7GncV6RUEOHhHbKF+TdQ@xxxxxxxxxxxxxx/
> Signed-off-by: Luka Gejak <luka.gejak@xxxxxxxxx>

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