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This patch adds the get_vq_state and set_vq_state vDPA callbacks. In order to get the VQ state, the state needs to be read from the DPU. In order to allow that, the old messaging mechanism is replaced with a new, flexible control mechanism. This mechanism allows to read data from the DPU. The mechanism can be used if the negotiated config version is 2 or higher. If the new mechanism is used when the config version is 1, it will call snet_send_ctrl_msg_old, which is config 1 compatible. Signed-off-by: Alvaro Karsz <alvaro.karsz@solid-run.com> Message-Id: <20230413073337.31367-2-alvaro.karsz@solid-run.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Acked-by: Jason Wang <jasowang@redhat.com>
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.