DFS fails with QCA6174 and QCA9377

[Michal Kazior]

On 21 May 2016 at 16:19, The Dark Avenger <darkavenger at fastmail.fm> wrote:
> Hello,
>
> I'm currently trying to set-up an AP in the 5 GHz band. I have a QCA6174
> (Killer 1525) and a QCA9377 adapter at hand.
>
> Unfortunately, while both cards work otherwise well, e.g. I can create an AP
> in the 2.4 GHz range, ACS works,  anything requiring DFS fails:
[...]
> The only thing that worries me is that "iw list" does not report any "radar
> detect widths".|.
> |So, I am somewhat clueless where the problem lies.  Is it driver, firmware,
> or something else?

I suspect hardware does not support it. Firmware already advertises no
support for AP_DFS service and driver follows suit and does not define
any radar_detect_widths in interface combinations for these chips.


Michał