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Message-ID: <20250325142202.61d2d4b3@kernel.org>
Date: Tue, 25 Mar 2025 14:22:02 -0700
From: Jakub Kicinski <kuba@...nel.org>
To: Kory Maincent <kory.maincent@...tlin.com>
Cc: Maxime Chevallier <maxime.chevallier@...tlin.com>, davem@...emloft.net,
 Andrew Lunn <andrew@...n.ch>, Eric Dumazet <edumazet@...gle.com>, Paolo
 Abeni <pabeni@...hat.com>, Heiner Kallweit <hkallweit1@...il.com>,
 netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
 thomas.petazzoni@...tlin.com, linux-arm-kernel@...ts.infradead.org,
 Christophe Leroy <christophe.leroy@...roup.eu>, Herve Codina
 <herve.codina@...tlin.com>, Florian Fainelli <f.fainelli@...il.com>,
 Russell King <linux@...linux.org.uk>, Vladimir Oltean
 <vladimir.oltean@....com>, Oleksij Rempel <o.rempel@...gutronix.de>, Simon
 Horman <horms@...nel.org>, Romain Gantois <romain.gantois@...tlin.com>,
 Piergiorgio Beruto <piergiorgio.beruto@...il.com>
Subject: Re: [PATCH net-next v4 2/8] net: ethtool: netlink: Allow
 per-netdevice DUMP operations

On Tue, 25 Mar 2025 14:15:07 -0700 Jakub Kicinski wrote:
> > This means the dump will have a different behavior in case of filtered dump
> > (allow_pernetdev_dump) or standard dump.
> > The standard dump will drop the interface device so it will dump all interfaces
> > even if one is specified.
> > The filtered dump will dump only the specified interface. 
> > Maybe it would be nice to have the same behavior for the dump for all the
> > ethtool command.
> > Even if this change modify the behavior of the dump for all the ethtool commands
> > it won't be an issue as the filtered dump did not exist before, so I suppose it
> > won't break anything. IMHO it is safer to do it now than later, if existing
> > ethtool command adds support for filtered dump.
> > We should find another way to know the parser is called from dump or doit.  
> 
> Let's try. We can probably make required_dev attr of
> ethnl_parse_header_dev_get() a three state one: require, allow, reject?

Ah, don't think this is going to work. You're not converting all 
the dumps, just the PHY ones. It's fine either way, then.

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