0d7502a9b4
Virtchnl version 1 is an interface used by the current generation of foundational NICs to negotiate the capabilities and configure the HW resources such as queues, vectors, RSS LUT, etc between the PF and VF drivers. It is not extensible to enable new features supported in the next generation of NICs/IPUs and to negotiate descriptor types, packet types and register offsets. To overcome the limitations of the existing interface, introduce the virtchnl version 2 and add the necessary opcodes, structures, definitions, and descriptor formats. The driver also learns the data queue and other register offsets to use instead of hardcoding them. The advantage of this approach is that it gives the flexibility to modify the register offsets if needed, restrict the use of certain descriptor types and negotiate the supported packet types. Co-developed-by: Alan Brady <alan.brady@intel.com> Signed-off-by: Alan Brady <alan.brady@intel.com> Co-developed-by: Joshua Hay <joshua.a.hay@intel.com> Signed-off-by: Joshua Hay <joshua.a.hay@intel.com> Co-developed-by: Madhu Chittim <madhu.chittim@intel.com> Signed-off-by: Madhu Chittim <madhu.chittim@intel.com> Co-developed-by: Phani Burra <phani.r.burra@intel.com> Signed-off-by: Phani Burra <phani.r.burra@intel.com> Co-developed-by: Sridhar Samudrala <sridhar.samudrala@intel.com> Signed-off-by: Sridhar Samudrala <sridhar.samudrala@intel.com> Reviewed-by: Sridhar Samudrala <sridhar.samudrala@intel.com> Reviewed-by: Willem de Bruijn <willemb@google.com> Acked-by: Jakub Kicinski <kuba@kernel.org> Signed-off-by: Pavan Kumar Linga <pavan.kumar.linga@intel.com> Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.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.