netdev - Re: [PATCH net-next v2] docs: net: document guidance of implementing the SR-IOV NDOs

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Date: Thu, 20 Jun 2024 18:58:55 +0100
From: Simon Horman <horms@...nel.org>
To: Jakub Kicinski <kuba@...nel.org>
Cc: davem@...emloft.net, netdev@...r.kernel.org, edumazet@...gle.com,
	pabeni@...hat.com, corbet@....net, rdunlap@...radead.org,
	linux-doc@...r.kernel.org
Subject: Re: [PATCH net-next v2] docs: net: document guidance of implementing
 the SR-IOV NDOs

On Wed, Jun 19, 2024 at 05:27:41PM -0700, Jakub Kicinski wrote:
> New drivers were prevented from adding ndo_set_vf_* callbacks
> over the last few years. This was expected to result in broader
> switchdev adoption, but seems to have had little effect.
> 
> Based on recent netdev meeting there is broad support for allowing
> adding those ops.
> 
> There is a problem with the current API supporting a limited number
> of VFs (100+, which is less than some modern HW supports).
> We can try to solve it by adding similar functionality on devlink
> ports, but that'd be another API variation to maintain.
> So a netlink attribute reshuffling is a more likely outcome.
> 
> Document the guidance, make it clear that the API is frozen.
> 
> Signed-off-by: Jakub Kicinski <kuba@...nel.org>

Thanks Jakub,

This is as was discussed at the public netdev call the other day [1].
And a change I supported in that meeting.

Reviewed-by: Simon Horman <horms@...nel.org>

[1] https://lore.kernel.org/netdev/20240617083955.1039b2e3@kernel.org/