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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>
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.