netdev - Re: [PATCH v2 1/2] net: ethtool: Support setting ntuple rule count

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Message-ID: <YPxMlaxjT0vSeqZg@lunn.ch>
Date:   Sat, 24 Jul 2021 19:23:33 +0200
From:   Andrew Lunn <andrew@...n.ch>
To:     Sunil Goutham <sgoutham@...vell.com>
Cc:     netdev@...r.kernel.org, davem@...emloft.net, kuba@...nel.org
Subject: Re: [PATCH v2 1/2] net: ethtool: Support setting ntuple rule count

On Fri, Jul 23, 2021 at 11:46:45PM +0530, Sunil Goutham wrote:
> Some NICs share resources like packet filters across
> multiple interfaces they support. From HW point of view
> it is possible to use all filters for a single interface.
> Currently ethtool doesn't support modifying filter count so
> that user can allocate more filters to a interface and less
> to others. This patch adds ETHTOOL_SRXCLSRLCNT ioctl command
> for modifying filter count.
> 
> example command:
> ./ethtool -U eth0 rule-count 256

How can use see what the current usage is? How many in total you have
available?  What the current split is between the interfaces?

You say:

   * Jakub suggested if devlink-resource can be used for this.

devlink-resource provides you a standardised mechanism to answer the
questions i just asked. So i would have to agree with Jakub.

	  Andrew