linux-kernel - Re: [PATCH net-next v2 02/14] i40e: support generic devlink param "max_mac_per

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Message-ID: <20251020182515.457ad11c@kernel.org>
Date: Mon, 20 Oct 2025 18:25:15 -0700
From: Jakub Kicinski <kuba@...nel.org>
To: Jacob Keller <jacob.e.keller@...el.com>
Cc: Jiri Pirko <jiri@...nulli.us>, "David S. Miller" <davem@...emloft.net>,
 Eric Dumazet <edumazet@...gle.com>, Paolo Abeni <pabeni@...hat.com>, Simon
 Horman <horms@...nel.org>, Jonathan Corbet <corbet@....net>, Tony Nguyen
 <anthony.l.nguyen@...el.com>, Przemek Kitszel
 <przemyslaw.kitszel@...el.com>, Andrew Lunn <andrew+netdev@...n.ch>,
 Alexander Lobakin <aleksander.lobakin@...el.com>, netdev@...r.kernel.org,
 linux-doc@...r.kernel.org, linux-kernel@...r.kernel.org, Mohammad Heib
 <mheib@...hat.com>, Aleksandr Loktionov <aleksandr.loktionov@...el.com>,
 Rafal Romanowski <rafal.romanowski@...el.com>
Subject: Re: [PATCH net-next v2 02/14] i40e: support generic devlink param
 "max_mac_per_vf"

On Thu, 16 Oct 2025 23:08:31 -0700 Jacob Keller wrote:
> - The configured value is a theoretical maximum. Hardware limits may
>   still prevent additional MAC addresses from being added, even if the
>   parameter allows it.

Is "administrative policy" better than "theoretical max" ?

Also -- should we be scanning the existing state to check if some VM
hasn't violated the new setting and error or at least return a extack
to the user to warn that the policy is not currently adhered to?