linux-kernel - Re: [PATCH V3 2/5] misc: mlx5ctl: Add mlx5ctl misc driver

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Date:   Wed, 13 Dec 2023 08:55:31 -0800
From:   Christoph Hellwig <hch@...radead.org>
To:     Saeed Mahameed <saeed@...nel.org>
Cc:     Aron Silverton <aron.silverton@...cle.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Jason Gunthorpe <jgg@...dia.com>,
        David Ahern <dsahern@...nel.org>,
        Arnd Bergmann <arnd@...db.de>,
        Leon Romanovsky <leonro@...dia.com>,
        Jiri Pirko <jiri@...dia.com>, Leonid Bloch <lbloch@...dia.com>,
        Itay Avraham <itayavr@...dia.com>,
        linux-kernel@...r.kernel.org, Saeed Mahameed <saeedm@...dia.com>
Subject: Re: [PATCH V3 2/5] misc: mlx5ctl: Add mlx5ctl misc driver

On Thu, Dec 07, 2023 at 10:54:02AM -0800, Saeed Mahameed wrote:
> Also I would like to repeat, this is not touching netdev, netdev's policies
> do not apply to the greater kernel or RDMA, and we have use cases with
> pure-infiniband/DPU/FPGA cards that have no netdev at all, or other cases
> with pur virtio instances, and much more.

Yes.  I mean just about every complex block driver has some kind of
vendor spcific tooling for debugging, statistics, etc.  Trying to deny
it just because one function expose by a device is a network device is
even more silly than disallowing it for pure net devices (which already
tend to be complex beasts).