60a6127c5e
Ido Schimmel says: ==================== mlxsw: Enable/disable PTP shapers Shalom says: In order to get more accurate hardware time stamping in Spectrum-1, the driver needs to apply a shaper on the port for speeds lower than 40Gbps. This shaper is called a PTP shaper and it is applied on hierarchy 0, which is the port hierarchy. This shaper may affect the shaper rates of all hierarchies. This patchset adds the ability to enable or disable the PTP shaper on the port in two scenarios: 1. When the user wants to enable/disable the hardware time stamping 2. When the port is brought up or down (including port speed change) Patch #1 adds the QEEC.ptps field that is used for enabling or disabling the PTP shaper on a port. Patch #2 adds a note about disabling the PTP shaper when calling to mlxsw_sp_port_ets_maxrate_set(). Patch #3 adds the QPSC register that is responsible for configuring the PTP shaper parameters per speed. Patch #4 sets the PTP shaper parameters during the ptp_init(). Patch #5 adds new operation for getting the port's speed. Patch #6 enables/disables the PTP shaper when turning on or off the hardware time stamping. Patch #7 enables/disables the PTP shaper when the port's status has changed (including port speed change). Patch #8 applies the PTP shaper enable/disable logic by filling the PTP shaper parameters array. ==================== Signed-off-by: David S. Miller <davem@davemloft.net> |
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README
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.