linux-kernel - Re: [PATCH net-next v7 3/9] ethtool: Add an interface for flashing transceiver modules' firmware

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Message-ID: <f17b31a1-e2c3-4a7b-bdd1-53606627a16f@lunn.ch>
Date: Mon, 24 Jun 2024 21:23:42 +0200
From: Andrew Lunn <andrew@...n.ch>
To: Danielle Ratson <danieller@...dia.com>
Cc: netdev@...r.kernel.org, davem@...emloft.net, edumazet@...gle.com,
	kuba@...nel.org, pabeni@...hat.com, corbet@....net,
	linux@...linux.org.uk, sdf@...gle.com, kory.maincent@...tlin.com,
	maxime.chevallier@...tlin.com, vladimir.oltean@....com,
	przemyslaw.kitszel@...el.com, ahmed.zaki@...el.com,
	richardcochran@...il.com, shayagr@...zon.com,
	paul.greenwalt@...el.com, jiri@...nulli.us,
	linux-doc@...r.kernel.org, linux-kernel@...r.kernel.org,
	mlxsw@...dia.com, idosch@...dia.com, petrm@...dia.com
Subject: Re: [PATCH net-next v7 3/9] ethtool: Add an interface for flashing
 transceiver modules' firmware

On Mon, Jun 24, 2024 at 08:51:53PM +0300, Danielle Ratson wrote:
> CMIS compliant modules such as QSFP-DD might be running a firmware that
> can be updated in a vendor-neutral way by exchanging messages between
> the host and the module as described in section 7.3.1 of revision 5.2 of
> the CMIS standard.
> 
> Add a pair of new ethtool messages that allow:
> 
> * User space to trigger firmware update of transceiver modules
> 
> * The kernel to notify user space about the progress of the process
> 
> The user interface is designed to be asynchronous in order to avoid
> RTNL being held for too long and to allow several modules to be
> updated simultaneously. The interface is designed with CMIS compliant
> modules in mind, but kept generic enough to accommodate future use
> cases, if these arise.
> 
> Signed-off-by: Danielle Ratson <danieller@...dia.com>
> Reviewed-by: Petr Machata <petrm@...dia.com>

Reviewed-by: Andrew Lunn <andrew@...n.ch>

    Andrew