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When the access to read PTP clock is specified as mailbox, the driver needs to send virtchnl message to perform PTP actions. Message is sent using idpf_mbq_opc_send_msg_to_peer_drv mailbox opcode, with the parameters received during PTP capabilities negotiation. Add functions to recognize PTP messages, move them to dedicated secondary mailbox, read the PTP clock time and cross timestamp using mailbox messages. Reviewed-by: Alexander Lobakin <aleksander.lobakin@intel.com> Reviewed-by: Willem de Bruijn <willemb@google.com> Reviewed-by: Jacob Keller <jacob.e.keller@intel.com> Signed-off-by: Milena Olech <milena.olech@intel.com> Tested-by: Samuel Salin <Samuel.salin@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 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.