Re: WCN7850 disconnects and reconnects in a loop

[Johan Hovold <johan@kernel.org>]

On Thu, Dec 12, 2024 at 10:04:18AM +0200, Kalle Valo wrote:
> Johan Hovold <johan@kernel.org> writes:
> 
> > On Wed, Dec 11, 2024 at 09:35:37AM +0200, Kalle Valo wrote:
> >> Johan Hovold <johan@kernel.org> writes:
> >
> >> > I'm seeing iwd repeatedly failing to connect with reason
> >> > PREV_AUTH_NOT_VALID with WCN7850 on the Lenovo ThinkPad T14s (and the
> >> > Snapdragon X1E CRD reference design).
> >> >
> >> > I first noticed this with 6.10 when starting to work on the Qualcomm X
> >> > Elite platform, but never got around to investigating it. I've confirmed
> >> > that the issue is still there with 6.13-rc1 and that adding
> >> > ControlPortOverNL80211=false allows iwd to connect.
> >> >
> >> > Looking at Gregoire's logs now, it looks like the deauthentication
> >> > reason is different:
> >> >
> >> > 	(Reason: 7=CLASS3_FRAME_FROM_NONASSOC_STA)
> >> >
> >> > instead of
> >> >
> >> > 	(Reason: 2=PREV_AUTH_NOT_VALID)
> >> >
> >> > but the same control port workaround allows iwd to connect.
> >> 
> >> Is there a bugzilla report about this? Unfortunately I have not been
> >> able to follow bugzilla lately due to MLO work but it would be still
> >> good to file this (if that's not done already).
> >
> > Yes, sorry, I should have included the link (it was posted later in the
> > original thread):
> >
> > 	https://bugzilla.kernel.org/show_bug.cgi?id=218733
> 
> No, I should have checked the bugzilla myself but have been too busy.
> Thanks for the link.
> 
> > I only noticed that Gregoire's symptoms were slightly different when
> > replying to this thread. Let me know if you prefer that I file a
> > separate bugzilla report for the PREV_AUTH_NOT_VALID case.
> >
> > The exact same setup (kernel, distro and router) works fine with ath11k
> > and WCN6855 (e.g. as found in the Lenovo ThinkPad X13s).
> 
> Good to know. We need to get this fixed ASAP, I marked it as P1 in bugzilla.

For the record, this appears to have been fix in linux-next now by the
following series:

	https://lore.kernel.org/all/20250523-ath12k-unicast-key-first-v1-0-f53c3880e6d8@quicinc.com/

Johan