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Date:   Wed, 26 Jan 2022 10:32:56 -0800
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Subject: Re: iwlwifi problems, maybe firmware related?
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To:     "Coelho, Luciano" <luciano.coelho@intel.com>,
        "linux-wireless@vger.kernel.org" <linux-wireless@vger.kernel.org>,
        greearb <greearb@candelatech.com>
Cc:     "Ben Ami, Golan" <golan.ben.ami@intel.com>
References: <92b00b94-aff6-8108-06d1-932b77f9d218@infradead.org>
 <04761964-e3b3-b2f7-78a4-bbc3507ad676@candelatech.com>
 <0ee64c55-1326-addb-7c9c-c922373f78c0@infradead.org>
 <cb3e4991c19659ab73cc0d9c12e8b7dbba9d652d.camel@intel.com>
From:   Randy Dunlap <rdunlap@infradead.org>
In-Reply-To: <cb3e4991c19659ab73cc0d9c12e8b7dbba9d652d.camel@intel.com>
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Hi--

On 1/25/22 23:12, Coelho, Luciano wrote:
> 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).

Just confirming that kernel 5.16 without broadcast filtering works
with firmware v67.

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

Yes, please.

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


-- 
~Randy