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60d3cd8561
The I/O submission queue management admin commands (nvme_admin_delete_sq, nvme_admin_create_sq, nvme_admin_delete_cq, and nvme_admin_create_cq) are mandatory admin commands for I/O controllers using the PCI transport, that is, support for these commands is mandatory for a a PCI target I/O controller. Implement support for these commands by adding the functions nvmet_execute_delete_sq(), nvmet_execute_create_sq(), nvmet_execute_delete_cq() and nvmet_execute_create_cq() to set as the execute method of requests for these commands. These functions will return an invalid opcode error for any controller that is not a PCI target controller. Support for the I/O queue management commands is also reported in the command effect log of PCI target controllers (using nvmet_get_cmd_effects_admin()). Each management command is backed by a controller fabric operation that can be defined by a PCI target controller driver to setup I/O queues using nvmet_sq_create() and nvmet_cq_create() or delete I/O queues using nvmet_sq_destroy(). As noted in a comment in nvmet_execute_create_sq(), we do not yet support sharing a single CQ between multiple SQs. Signed-off-by: Damien Le Moal <dlemoal@kernel.org> Reviewed-by: Christoph Hellwig <hch@lst.de> Tested-by: Rick Wertenbroek <rick.wertenbroek@gmail.com> Tested-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org> Signed-off-by: Keith Busch <kbusch@kernel.org> |
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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 reStructuredText 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.