netdev - Re: [PATCH net-next V6 09/13] devlink: Add 'keep_link

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Message-ID: <20250709195801.60b3f4f2@kernel.org>
Date: Wed, 9 Jul 2025 19:58:01 -0700
From: Jakub Kicinski <kuba@...nel.org>
To: Saeed Mahameed <saeed@...nel.org>
Cc: "David S. Miller" <davem@...emloft.net>, Paolo Abeni
 <pabeni@...hat.com>, Eric Dumazet <edumazet@...gle.com>, Saeed Mahameed
 <saeedm@...dia.com>, netdev@...r.kernel.org, Tariq Toukan
 <tariqt@...dia.com>, Gal Pressman <gal@...dia.com>, Leon Romanovsky
 <leonro@...dia.com>, Jiri Pirko <jiri@...dia.com>, Simon Horman
 <horms@...nel.org>
Subject: Re: [PATCH net-next V6 09/13] devlink: Add 'keep_link_up' generic
 devlink device param

On Tue,  8 Jul 2025 20:04:51 -0700 Saeed Mahameed wrote:
> Devices that support this in permanent mode will be requested to keep the
> port link up even when driver is not loaded, netdev carrier state won't
> affect the physical port link state.
> 
> This is useful for when the link is needed to access onboard management
> such as BMC, even if the host driver isn't loaded.

Dunno. This deserves a fuller API, and it's squarely and netdev thing.
Let's not add it to devlink.