Re: [PATCH mlx5-next v1 1/8] net/mlx5: Add forward compatible support for the FTE match data

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On Sun, Jul 15, 2018 at 10:26 AM, Yishai Hadas
<yishaih@xxxxxxxxxxxxxxxxxx> wrote:
> On 7/12/2018 11:53 PM, Or Gerlitz wrote:
>> On Wed, Jul 11, 2018 at 2:10 PM, Leon Romanovsky <leon@xxxxxxxxxx> wrote:
>>> From: Yishai Hadas <yishaih@xxxxxxxxxxxx>

>>> Use the PRM size including the reserved when working with the FTE
>>> match data.

>> is this actually a bug fix?

> No, it's some requirement from the new API to enable forward compatible
> support without changing the kernel code.

ok, but

>>> Also drop some driver checks around the match criteria leaving the work
>>> for firmware to enable forward compatibility for future bits there.

>> not following,

> Same as for the 'reserved' field but also for extending the 'match criteria'
> field with new bits without changing the kernel.

-- we need a clear memo as part of your change-logs and/or cover-letter/s that
explains the overall approach/design for
doing-things-without-changing-the-kernel,
does this exist? the arch/approach need not be deciphered from the
code or change logs
snapshots but rather stated clearly.
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