mirror of https://github.com/torvalds/linux.git
35155e2626
In this patch, we present the IO level functionality. The nvme-tcp-offload shall work on the IO-level, meaning the nvme-tcp-offload ULP module shall pass the request to the nvme-tcp-offload vendor driver and shall expect for the request completion. No additional handling is needed in between, this design will reduce the CPU utilization as we will describe below. The nvme-tcp-offload vendor driver shall register to nvme-tcp-offload ULP with the following IO-path ops: - send_req - in order to pass the request to the handling of the offload driver that shall pass it to the vendor specific device - poll_queue The vendor driver will manage the context from which the request will be executed and the request aggregations. Once the IO completed, the nvme-tcp-offload vendor driver shall call command.done() that shall invoke the nvme-tcp-offload ULP layer for completing the request. This patch also add support for the nvme-tcp-offload timeout and nvme-tcp-offload ASYNC flow. Acked-by: Igor Russkikh <irusskikh@marvell.com> Signed-off-by: Dean Balandin <dbalandin@marvell.com> Signed-off-by: Prabhakar Kushwaha <pkushwaha@marvell.com> Signed-off-by: Omkar Kulkarni <okulkarni@marvell.com> Signed-off-by: Michal Kalderon <mkalderon@marvell.com> Signed-off-by: Ariel Elior <aelior@marvell.com> Signed-off-by: Shai Malin <smalin@marvell.com> Reviewed-by: Hannes Reinecke <hare@suse.de> Reviewed-by: Himanshu Madhani <himanshu.madhani@oracle.com> Signed-off-by: David S. Miller <davem@davemloft.net> |
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