linux-kernel - Re: [PATCH 3/3] nvme: Allow reauth from sysfs

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Message-ID: <b684812e-8ade-4adc-aa08-2e4fcc9811d7@nvidia.com>
Date: Mon, 3 Nov 2025 02:05:55 +0000
From: Chaitanya Kulkarni <chaitanyak@...dia.com>
To: Alistair Francis <alistair23@...il.com>
CC: "kbusch@...nel.org" <kbusch@...nel.org>, "axboe@...nel.dk"
	<axboe@...nel.dk>, "sagi@...mberg.me" <sagi@...mberg.me>, "hare@...e.de"
	<hare@...e.de>, Chaitanya Kulkarni <chaitanyak@...dia.com>,
	"linux-nvme@...ts.infradead.org" <linux-nvme@...ts.infradead.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>, Alistair
 Francis <alistair.francis@....com>, Christoph Hellwig <hch@....de>
Subject: Re: [PATCH 3/3] nvme: Allow reauth from sysfs

On 11/2/25 5:47 PM, Alistair Francis wrote:
> On Sat, Nov 1, 2025 at 12:05 AM Christoph Hellwig<hch@....de> wrote:
>> On Thu, Oct 30, 2025 at 01:51:14PM +1000,alistair23@...il.com wrote:
>>> From: Alistair Francis<alistair.francis@....com>
>>>
>>> Allow userspace to trigger a reauth (REPLACETLSPSK) from sysfs.
>>> This can be done by writing the queue ID to te sysfs file.
>>>
>>> echo 0 > /sys/devices/virtual/nvme-fabrics/ctl/nvme0/replace_psk
>>>
>>> Note that only QID 0 (admin queue) is supported.
>> Why pass the queue ID then instead of a boolean value?
> I liked the explicitness of passing a queue ID instead of a bool and
> it allows supporting more queues in the future if that changes in the
> spec.
>
> I can change it to a bool instead if that's preferred?
>
> Alistair

do you have any plans to add support for the I/O queues in future ?
OR
have a strong usecase for I/O queues to support this feature ?

-ck