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The NVMe base specifications v2.1 mandate supporting the interrupt config feature (NVME_FEAT_IRQ_CONFIG) for PCI controllers. Introduce the data structure struct nvmet_feat_irq_config to define the coalescing disabled (cd) and interrupt vector (iv) fields of this feature and implement the functions nvmet_get_feat_irq_config() and nvmet_set_feat_irq_config() functions to get and set these fields. These functions respectively use the controller get_feature() and set_feature() operations to fill and handle the fields of struct nvmet_feat_irq_config. Support for this feature is prohibited for fabrics controllers. If a get feature command or a set feature command for this feature is received for a fabrics controller, the command is failed with an invalid field error. 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>
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.