Re: wifi: iwlwifi: SAE fails when AP sends confirm before STA

[James Prestwood <prestwoj@gmail.com>]

Hi,

On 5/9/25 6:45 AM, Jan Hendrik Farr wrote:
> On 09 06:12:23, James Prestwood wrote:
>> One thing you could try easily right off the bat would be to try forcing the
>> default SAE group in IWD's config. I've seen some APs really struggle with
>> group negotiation which is why we added the ability to set this. In your
>> network profile (/var/lib/iwd/ssid.psk) set this:
>>
>>
>> [Settings]
>> UseDefaultEccGroup=true
>>
>> And see if that helps.
> Thanks for the suggestion. It does not appear to change the behavior I'm
> seeing. Also I'm pretty convinced that the AP is not at fault here. It
> is sending the confirm, and the STA fails to ACK that and the confirm
> never shows up in iwd.
>
> Confirmed that the settings is applied using these logs from iwd:
>
> [SAE]: Using SAE H2E
> [SAE]: Using group 19
>
> I assume group 19 is the default group?

Yep that's it. At least we can take that out of the equation.

And yes, in the PCAP I do see the confirm's being sent but no ACK. We'll 
have to wait for an iwlwifi person to chime in. I suspect we'll need 
some iwlwifi debugging enabled to see if the confirm was received at 
some level in the driver and dropped, or never received at all.

Thanks,

James

>
> Best Regards
> Jan