[PATCH] nvme-auth: isolate auth to fabrics transports

[Christoph Hellwig]

On Mon, Dec 18, 2023 at 02:16:13PM -0800, Keith Busch wrote:
> From: Keith Busch <kbusch at kernel.org>
> 
> Some transports don't use authentication, so contain the resources and
> handling for it to fabrics that do use it.

Is it really worth to have a separate structure for those relatively few
fields?  If so it might make sense to just have a nvme_fabrics_ctrl
structure that wraps struct nvme_ctrl.

And a somewhat more descriptive commit log would also be useful.