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RE: iwlwifi problems, maybe firmware related?

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Hey,

Here it is:
https://bugzilla.kernel.org/show_bug.cgi?id=215488

Thanks,
Golan.

-----Original Message-----
From: Coelho, Luciano <luciano.coelho@xxxxxxxxx> 
Sent: Wednesday, January 26, 2022 09:13
To: linux-wireless@xxxxxxxxxxxxxxx; greearb <greearb@xxxxxxxxxxxxxxx>; rdunlap@xxxxxxxxxxxxx
Cc: Ben Ami, Golan <golan.ben.ami@xxxxxxxxx>
Subject: Re: iwlwifi problems, maybe firmware related?

Hi,

Adding Golan to the thread.

On Tue, 2022-01-25 at 18:20 -0800, Randy Dunlap wrote:
> 
> On 1/25/22 15:58, Ben Greear wrote:
> > On 1/25/22 3:08 PM, Randy Dunlap wrote:
> > > Hi,
> > > 
> > > When I boot 5.16 or 5.17-rc1, I get messages like:
> > > 
> > > iwlwifi 0000:00:14.3: api flags index 2 larger than supported by 
> > > driver iwlwifi 0000:00:14.3: TLV_FW_FSEQ_VERSION: FSEQ Version: 
> > > 89.3.35.37 iwlwifi 0000:00:14.3: loaded firmware version 
> > > 67.8f59b80b.0 QuZ-a0-hr-b0-67.ucode op_mode iwlmvm
> > 
> > We see nothing but crashes with the version 67 firmware.  Remove 
> > that from your /lib/firmware/ dir (and make sure version 66 or lower 
> > is there), and reboot and it should work again.
> 
> Well. Yes, that does make things work for me.
> 
> It's odd, though, that openSUSE Tumbleweed with kernel "Linux version 5.16.1-1-default"
> (whatever that is) also works with no problems.
> 
> Thanks for your help.

This is because of broadcast filtering.  This feature hasn't been supported for quite a while and now the firmware rejects the command we send to it.

The easy fix is to compile iwlwifi without CONFIG_IWLWIFI_BCAST_FILTERING (which should not be enabled by default).

I have removed this option from the driver now and will send the patch to 5.17-rc* as a fix.

Golan, I think we have a bugzilla for this, do you remember?


--
Cheers,
Luca.
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