linux-kernel - Re: [PATCH net v1 1/1] net: phy: Clear link-specific data on link down

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Message-ID: <20250821175414.291ccc95@kernel.org>
Date: Thu, 21 Aug 2025 17:54:14 -0700
From: Jakub Kicinski <kuba@...nel.org>
To: Oleksij Rempel <o.rempel@...gutronix.de>
Cc: Andrew Lunn <andrew@...n.ch>, Heiner Kallweit <hkallweit1@...il.com>,
 "David S. Miller" <davem@...emloft.net>, Eric Dumazet
 <edumazet@...gle.com>, Paolo Abeni <pabeni@...hat.com>,
 kernel@...gutronix.de, linux-kernel@...r.kernel.org,
 netdev@...r.kernel.org, Russell King <linux@...linux.org.uk>
Subject: Re: [PATCH net v1 1/1] net: phy: Clear link-specific data on link
 down

On Mon, 18 Aug 2025 14:11:59 +0200 Oleksij Rempel wrote:
> When a network interface is brought down, the associated PHY is stopped.
> However, several link-specific parameters within the phy_device struct
> are not cleared. This leads to userspace tools like ethtool reporting
> stale information from the last active connection, which is misleading
> as the link is no longer active.

Makes sense but unless you can point at a commit which brought this
behavior in I'm slightly worried about regressions. Not that I can
think of an exact scenario..

Could you please repost for net-next and let's see if we can attract
any PHY maintainer acks?
-- 
pw-bot: cr