Re: [PATCH 5/7] nvmet: implement namespace identify descriptor list

Hannes Reinecke
2017-05-30T08:24:20Z

On 05/30/2017 10:08 AM, Johannes Thumshirn wrote:
> A NVMe Identify NS command with a CNS value of '3' is expecting a list
> of Namespace Identification Descriptor structures to be returned to
> the host for the namespace requested in the namespace identify
> command.
>
> This Namespace Identification Descriptor structure consists of the
> type of the namespace identifier, the length of the identifier and the
> actual identifier.
>
> Valid types are EUI-64, NGUID and UUID which we have saved in our
> nvme_ns structure if they have been configured via configfs. If no
> value has been assigened to one of these we return an "invalid opcode"
> back to the host to maintain backward compatibiliy with older
> implementations without Namespace Identify Descriptor list support.
>
> Signed-off-by: Johannes Thumshirn <jthumshirn@suse.de>
> ---
> drivers/nvme/target/admin-cmd.c | 75 +++++++++++++++++++++++++++++++++++++++++
> include/linux/nvme.h | 14 ++++++++
> 2 files changed, 89 insertions(+)
>
Reviewed-by: Hannes Reinecke <hare@suse.com>

Cheers,

Hannes
--
Dr. Hannes Reinecke Teamlead Storage & Networking
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