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d25ff63a18
Lay the groundwork for Spectrum-2 support. On Spectrum-2, the packets get the time stamps from the CQE, which means that the time stamp is attached to its packet. Configure MTPTPT to set which message types should arrive under which PTP trap. PTP0 will be used for event message types, which means that the packets require time stamp. PTP1 will be used for other packets. Note that in Spectrum-2, all packets contain time stamp by default. The two types of traps (PTP0, PTP1) will be used to separate between PTP_EVENT traps and PTP_GENERAL traps, so then the driver will fill the time stamp as part of the SKB only for event message types. Later the driver will enable the traps using 'MTPCPC.ptp_trap_en' bit. Then, PTP packets start arriving through the PTP traps. Currently, the structure 'mlxsw_sp2_ptp_state' contains only the common structure, the next patches will extend it. Signed-off-by: Danielle Ratson <danieller@nvidia.com> Signed-off-by: Amit Cohen <amcohen@nvidia.com> Reviewed-by: Petr Machata <petrm@nvidia.com> Signed-off-by: Ido Schimmel <idosch@nvidia.com> Signed-off-by: David S. Miller <davem@davemloft.net> |
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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 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.