Re: [PATCH v2 04/13] mpt3sas: Added support for nvme encapsulated request message.

Hannes Reinecke
2017-08-03T06:33:17Z

On 07/14/2017 03:22 PM, Suganath Prabu S wrote:
> * Mpt3sas driver uses the NVMe Encapsulated Request message to
> send an NVMe command to an NVMe device attached to the IOC.
>
> * Normal I/O commands like reads and writes are passed to the
> controller as SCSI commands and the controller has the ability
> to translate the commands to NVMe equivalent.
>
> * This encapsulated NVMe command is used by applications to send
> direct NVMe commands to NVMe drives or for handling unmap where
> the translation at controller/firmware level is having
> performance issues.
>
> Signed-off-by: Chaitra P B <chaitra.basappa@broadcom.com>
> Signed-off-by: Suganath Prabu S <suganath-prabu.subramani@broadcom.com>
> ---
> drivers/scsi/mpt3sas/mpt3sas_base.c | 56 ++++++++++++++++++++++++++++-
> drivers/scsi/mpt3sas/mpt3sas_base.h | 1 +
> drivers/scsi/mpt3sas/mpt3sas_ctl.c | 69 ++++++++++++++++++++++++++++++++---
> 3 files changed, 119 insertions(+), 7 deletions(-)
>
Reviewed-by: Hannes Reinecke <hare@suse.com>

Cheers,

Hannes
--
Dr. Hannes Reinecke Teamlead Storage & Networking
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