Re: [PATCH v4 0/4] Support PSK reauthentication (REPLACETLSPSK)

[Alistair Francis]

On Tue, Dec 2, 2025 at 3:18 PM <alistair23@xxxxxxxxx> wrote:
>
> From: Alistair Francis <alistair.francis@xxxxxxx>
>
> Allow userspace on the host to trigger a reauth (REPLACETLSPSK) from
> sysfs. This will replace the PSK for the admin queue when using
> a secure concat connection.
>
> This can be done by writing 0 to the `tls_configured_key` sysfs file,
> for example something like this
>
> ```shell
> echo 0 > /sys/devices/virtual/nvme-fabrics/ctl/nvme0/tls_configured_key
> ```
>
> `tls_configured_key` will only appear for concat connections as that is
> all that is supported.
>
> Reading `tls_configured_key` will return the current configured key, which
> changes after each REPLACETLSPSK operation.
>
> This series also include some fixes for the NVMe target code to ensure
> this works against a Linux NVMe target.
>
> v4:
>  - Forcefully reset the connection after updating the keys
> v3:
>  - Only trigger if a 0 is written to `tls_configured_key`
>  - Add documentation
>
> Alistair Francis (4):
>   nvmet-tcp: Don't error if TLS is enabed on a reset
>   nvmet-tcp: Don't free SQ on authentication success
>   nvme: Expose the tls_configured sysfs for secure concat connections
>   nvme: Allow reauth from sysfs

This series is ready to merge. Can it be picked up?

Alistair

>
>  Documentation/ABI/testing/sysfs-nvme   | 13 ++++++++
>  drivers/nvme/host/sysfs.c              | 46 ++++++++++++++++++++++++--
>  drivers/nvme/target/auth.c             |  4 +--
>  drivers/nvme/target/core.c             |  2 +-
>  drivers/nvme/target/fabrics-cmd-auth.c | 12 +++----
>  drivers/nvme/target/nvmet.h            |  4 +--
>  6 files changed, 68 insertions(+), 13 deletions(-)
>  create mode 100644 Documentation/ABI/testing/sysfs-nvme
>
> --
> 2.51.1
>