How to transmit at 80MHz with VHT

[Devin Bayer]

On 24/11/2020 18.48, Devin Bayer wrote:
> Hello,
> 
> I have what may be a basic question. I am trying to use 80 MHz channels for
> 802.11ac and my client station reports that hostapd is always transmitting at 40
> MHz. My client does report it's sending at 80 MHz though.
> 
> It seems like it isn't even trying to use 80 MHz channels. There is nothing in
> the log about it. My card supports WiFi 6, a Qualcomm QCA6391, so it seems like
> that shouldn't be the limitation.

To answer my own question: to use 80 MHz channels for 802.11ac when 802.11ax is
also enabled, one must set the he_oper_* parameters. In my case, I had to add this:


  he_oper_chwidth=1
  he_oper_centr_freq_seg0_idx=155


~ dev