Subject: Re: [PATCH net-next v2 1/2] selftests: drv-net: rss: validate min RSS table size

From: Jakub Kicinski <[email-masked]>
Date: Wed, 18 Feb 2026 07:45:01 -0800

On Wed, 18 Feb 2026 10:02:01 +0200 Tariq Toukan wrote:
> > The minimum
> >    SHOULD be at least 4 times the number of supported receive queues.
> > 
> > so I guess the 4x isn't exactly a new recommendation.  
> 
> My position is as follows:
> Provide the appropriate factor *if possible* (currently it is 2x, and we 
> will likely increase it to 4x).
> However, do not limit the maximum nch if the factor cannot be satisfied 
> - even if that results in the selftest failing.

Yes, that's definitely fair. We can adjust the comment in the test
to make that clear. The user may want to use the queues in a different
RSS context / zero-copy so limiting queue count would be the wrong
direction. The test, is only signaling practicality of using all queues
in the main context.