On Mon, Oct 14, 2019 at 01:51:02PM +0200, Stefan Sperling wrote:
> 
> Newer iwm firmware requires the driver to use a feature known as
> dynamic queue allocation (DQA). What matters is that the command queue
> index was changed. Newer firmware images have stopped responding to
> commands sent with the old command queue index, and this is preventing
> us from dropping newer firmware versions into /etc/firmware without
> breaking things.
> 
> Some of our existing firmware images already support DQA (*-22 image
> files), and some do not (*-16 image files), so we need to support both
> modes of operation for now. (Linux has already removed non-DQA code
> paths from their iwlwifi driver).
> 
> I have successfully tested this diff on 8265 with our current firmware
> image (22.361476.0) as well as a newer -22 firmware image (22.391740.0,
> which is *not* in fw_update yet). I have also tested 7265 successfully.
> 
> Tests on 7260 and 8260 devices are still required.
> Nothing should change. At this point I am just looking for potential
> regressions when using this diff against our current firmware images.
> 
> Reviews and OKs are also welcome.

Tested on 3165 with current firmware (16.242414.0), seems to be working fine.

iwm0 at pci3 dev 0 function 0 "Intel Dual Band Wireless AC 3165" rev 0x81, msi
iwm0: hw rev 0x210, fw ver 16.242414.0, address 08:d4:0c:xx:xx:xx

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