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On Wed, 6 Jul 2022 12:54:12 +0200 Wilczynski, Michal wrote:

Hi,

Thank you for your e-mail.

I considered using devlink-rate, and it seems like a good fit. However 
we would also

need support for rate-limiting for individual queues on the VF. 
Currently we have

two types of rate objects in devlink-rate: leaf and node. Would adding a 
third one - queue be accepted ?

Something along those lines. IIUC htb offload as admission control for
VF representors is not a thing today, so since devlink rate exists the
lowest amount of duplication would be teaching it about queues.

Also we might want to add some other object rate parameters to currently 
existing ones, for example 'priority'.

Presumably you can't admission control at a granularity higher than 
a queue, so grouping queues should cover all use cases.

If this sounds acceptable I will work on the patch and submit it as 
soon, as it's ready.

I'd be curious to hear from nVidia and Corigine folks as well.

We can revive the switchdev call if talking over VC helps with
the alignment between vendors.