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Date: Thu, 4 Jan 2024 15:15:16 -0800
From: Jakub Kicinski <kuba@kernel.org>
To: Maxime Chevallier <maxime.chevallier@bootlin.com>
Cc: davem@davemloft.net, netdev@vger.kernel.org,
 linux-kernel@vger.kernel.org, thomas.petazzoni@bootlin.com, Andrew Lunn
 <andrew@lunn.ch>, Eric Dumazet <edumazet@google.com>, Paolo Abeni
 <pabeni@redhat.com>, Russell King <linux@armlinux.org.uk>,
 linux-arm-kernel@lists.infradead.org, Christophe Leroy
 <christophe.leroy@csgroup.eu>, Herve Codina <herve.codina@bootlin.com>,
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 <hkallweit1@gmail.com>, Vladimir Oltean <vladimir.oltean@nxp.com>,
 =?UTF-8?B?S8O2cnk=?= Maincent <kory.maincent@bootlin.com>, Jesse Brandeburg
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 =?UTF-8?B?QmVow7pu?= <kabel@kernel.org>, Piergiorgio Beruto
 <piergiorgio.beruto@gmail.com>, Oleksij Rempel <o.rempel@pengutronix.de>,
 =?UTF-8?B?Tmljb2zDsg==?= Veronese <nicveronese@gmail.com>, Simon Horman
 <horms@kernel.org>
Subject: Re: [PATCH net-next v5 05/13] net: ethtool: Allow passing a phy
 index for some commands
Message-ID: <20240104151516.5f424dbf@kernel.org>
In-Reply-To: <20231221180047.1924733-6-maxime.chevallier@bootlin.com>
References: <20231221180047.1924733-1-maxime.chevallier@bootlin.com>
	<20231221180047.1924733-6-maxime.chevallier@bootlin.com>
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On Thu, 21 Dec 2023 19:00:38 +0100 Maxime Chevallier wrote:
> @@ -20,6 +21,7 @@ const struct nla_policy ethnl_header_policy[] = {
>  					    .len = ALTIFNAMSIZ - 1 },
>  	[ETHTOOL_A_HEADER_FLAGS]	= NLA_POLICY_MASK(NLA_U32,
>  							  ETHTOOL_FLAGS_BASIC),
> +	[ETHTOOL_A_HEADER_PHY_INDEX]		= NLA_POLICY_MIN(NLA_U32, 1),
>  };
>  
>  const struct nla_policy ethnl_header_policy_stats[] = {
> @@ -28,6 +30,7 @@ const struct nla_policy ethnl_header_policy_stats[] = {
>  					    .len = ALTIFNAMSIZ - 1 },
>  	[ETHTOOL_A_HEADER_FLAGS]	= NLA_POLICY_MASK(NLA_U32,
>  							  ETHTOOL_FLAGS_STATS),
> +	[ETHTOOL_A_HEADER_PHY_INDEX]		= NLA_POLICY_MIN(NLA_U32, 1),
>  };

You should define (copy/paste) a new header policy and use it
only for commands which actually make use of the PHY index.
That's why we have separate copies already for stats.