RE: [PATCH v2] wifi: rtl8xxxu: Enable AP mode for RTL8192CU (RTL8188CUS)

[Ping-Ke Shih <pkshih@realtek.com>]

Ezra Buehler <ezra@easyb.ch> wrote:
> From: Ezra Buehler <ezra.buehler@husqvarnagroup.com>
> 
> This allows the driver to be used in wireless access point mode on the
> AT91SAM9G25-based GARDENA smart Gateway.
> 
> Unfortunately, the data throughput in AP mode appears to be lower than
> with the vendor driver (or in STA mode). Especially when sending, the
> data rate is significantly lower. My measurements performed with iperf3
> and an Edimax EW-7811Un (VID: 7392, PID: 7811) showed a maximum TX rate
> of about 4 Mbits/sec compared to the ~24 Mbits/sec measured with the
> rtl8192cu driver.

I assume the TX rate should be similar in AP mode and STA mode for the
same driver, but still little difference from real AP, which has more
antenna and better capability to TX/RX. 

Base on my assumption, I think we can try
1. compare TX rate with/without RF calibration, such as IQK, to ensure
   the calibrations work well in AP mode. 
2. try fixed TX rate by TX description to check if rate selection problem.

Ping-Ke