[PATCH v2 2/2] nvmet: return Invalid Field for invalid NSIDs in Get Features 82h

[Nilay Shroff]

On 9/20/26 9:05 AM, Guixin Liu wrote:
> The Reservation Notification Mask feature (FID 82h) rejects the same
> NSIDs for Get Features as for Set Features, plus the broadcast NSID:
> 
>    "A Get Features command that uses a namespace ID of FFFFFFFFh
>    shall be aborted with status code of Invalid Field in Command.
>    If a Set Features command or a Get Features command attempts to
>    access the Reservation Notification Mask on a namespace that does
>    not support reservations or is invalid, then that command is
>    aborted with status code of Invalid Field in Command."
> 
>    -- NVMe Base Specification, section 5.2.26.1.33
> 
> The Get Features handler routes the namespace lookup through
> nvmet_req_find_ns(), which returns Invalid Namespace or Format for an
> unknown NSID.  Both rejected cases land there: a nonexistent NSID
> fails the lookup, and so does the broadcast NSID, which never names a
> namespace.  Both are aborted with Invalid Namespace or Format instead
> of Invalid Field in Command.
> 
> Translate the lookup failure to Invalid Field in Command, as was done
> for Set Features.
> 
> Fixes: 5a47c2080a73 ("nvmet: support reservation feature")
> Signed-off-by: Guixin Liu<kanie at linux.alibaba.com>


Looks good to me.

Reviewed-by: Nilay Shroff <nilay at linux.ibm.com>