On Thu, Feb 05, 2026 at 11:24:39PM +0100, Mark Kettenis wrote:
> > Tests of this patch while using roaming on any iwx(4) device would be
> > much appreciated.
> > 
> > Bz device firmware throws a fatal firmware error if we attempt to remove
> > the firmware AP station before removing associated crypto keys. We currently
> > rely on firmware to implicitly remove keys along with the station and this
> > will no longer work on Bz.
> > The same might be true for MA devices, not sure. I cannot test them.
> 
> Tested this diff on:
> 
> iwx0 at pci0 dev 20 function 3 "Intel Wi-Fi 6 AX210" rev 0x20, msix
> iwx0: hw rev 0x440, fw 83.d24e06ed.0, pnvm 285b3568, address dc:45:46:e7:d5:33
> 
> This is FW version 83, so it must be MA ;).
> 
> Doesn't seem to make a difference here.  But I'm not roaming between
> access points.
> 
> On the bright side, it seems this device works a lot better now.  But
> I'm also using a different access point now.  Will do a bit more
> testing before declaring that MA now work.

There is something going very wrong with Rx somehow. I see lots of
packet loss (~85%) towards the Bz device. The worst symptoms are on
5GHz channels where I cannot even run tcpbench properly and ping can
take well over 10 seconds between ping and response packets.

On 2GHz channels it tends to work a lot better but not perfectly either.
tcpbench usually gives me about 10 Mbit/s but sometimes it's just as
bad as it is on 5GHz.

I suspect this is the same issue some people have reported on MA.

Unfortunately, I haven't yet managed to track it down what is happening.
It feels like the PHY wasn't properly tuned to the channel or something.