netdev - Re: [PATCH net-next 0/9][pull request] ice: managing MSI-X in driver

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Message-ID: <Z6L7LPIxHXPz2/ih@mev-dev.igk.intel.com>
Date: Wed, 5 Feb 2025 06:46:20 +0100
From: Michal Swiatkowski <michal.swiatkowski@...ux.intel.com>
To: Jakub Kicinski <kuba@...nel.org>
Cc: Tony Nguyen <anthony.l.nguyen@...el.com>, davem@...emloft.net,
	pabeni@...hat.com, edumazet@...gle.com, andrew+netdev@...n.ch,
	netdev@...r.kernel.org, sridhar.samudrala@...el.com,
	jacob.e.keller@...el.com, pio.raczynski@...il.com,
	konrad.knitter@...el.com, marcin.szycik@...el.com,
	nex.sw.ncis.nat.hpm.dev@...el.com, przemyslaw.kitszel@...el.com,
	jiri@...nulli.us, horms@...nel.org, David.Laight@...lab.com,
	pmenzel@...gen.mpg.de, mschmidt@...hat.com,
	tatyana.e.nikolova@...el.com, Jason Gunthorpe <jgg@...pe.ca>,
	Leon Romanovsky <leon@...nel.org>, linux-rdma@...r.kernel.org
Subject: Re: [PATCH net-next 0/9][pull request] ice: managing MSI-X in driver

On Tue, Feb 04, 2025 at 02:42:52PM -0800, Jakub Kicinski wrote:
> On Mon,  3 Feb 2025 13:09:29 -0800 Tony Nguyen wrote:
> > Now changing queues using ethtool is also changing MSI-X. If there is
> > enough MSI-X it is always one to one. When there is not enough there
> > will be more queues than MSI-X. There is a lack of ability to set how
> > many queues should be used per MSI-X. Maybe we should introduce another
> > ethtool param for it? Sth like queues_per_vector?
> 
> It's probably okay for today. AFAIU ethtool channels basically
> correspond to IRQs. As the queue API matures we'll have
> the ability to allocate more queues for "channel" == IRQ / event
> queue.
> 

Ok, thanks for explanation.

> > The following are changes since commit c2933b2befe25309f4c5cfbea0ca80909735fd76:
> >   Merge tag 'net-6.14-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
> > and are available in the git repository at:
> >   git://git.kernel.org/pub/scm/linux/kernel/git/tnguy/next-queue 100GbE
> 
> Tony, the patches in your tree are missing your SoB, and I suspect 
> you may need the same PR to get pulled into RDMA, so I'm not applying
> from the list... Please respin.
> -- 
> pw-bot: cr