netdev - Re: [bug report] net: ethtool: Introduce per-PHY DUMP operations

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Message-ID: <8cd942c4-986b-4c20-bc12-f8fc17f626c3@lunn.ch>
Date: Mon, 9 Feb 2026 14:10:38 +0100
From: Andrew Lunn <andrew@...n.ch>
To: Maxime Chevallier <maxime.chevallier@...tlin.com>
Cc: Dan Carpenter <dan.carpenter@...aro.org>,
	Simon Horman <horms@...nel.org>, netdev@...r.kernel.org,
	linux-kernel <linux-kernel@...r.kernel.org>
Subject: Re: [bug report] net: ethtool: Introduce per-PHY DUMP operations

> > ETHTOOL_MSG_USER_NONE, 
> > ETHTOOL_MSG_FEATURES_SET,
> > ETHTOOL_MSG_CABLE_TEST_ACT,
> > ETHTOOL_MSG_CABLE_TEST_TDR_ACT,
> > ETHTOOL_MSG_TUNNEL_INFO_GET,
> > ETHTOOL_MSG_MODULE_FW_FLASH_ACT,
> > ETHTOOL_MSG_RSS_CREATE_ACT,
> > ETHTOOL_MSG_RSS_DELETE_ACT,
> 
> While these commands don't have ethnl_request_ops handlers, they still
> have a genetlink handler, see the ethtool_genl_ops array [1]

At least for the *_ACT commands, they are not expected in the
userspace->kernel space direction. They should only be sent by the
kernel to user space, to indicate some action has been performed, or
happened. I don't know the netlink code too well, but i assume there
is something which will throw out such commands if sent to the kernel,
without even looking at the parameters?

	Andrew