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Vladimir Oltean says: ==================== Support PTP over UDP with the ocelot-8021q DSA tagging protocol The alternative tag_8021q-based tagger for Ocelot switches, added here: https://patchwork.kernel.org/project/netdevbpf/cover/20210129010009.3959398-1-olteanv@gmail.com/ gained support for PTP over L2 here: https://patchwork.kernel.org/project/netdevbpf/cover/20210213223801.1334216-1-olteanv@gmail.com/ mostly as a minimum viable requirement. That PTP support was mostly self-contained code that installed some rules to replicate PTP packets on the CPU queue, in felix_setup_mmio_filtering(). However ocelot-8021q starts to look more interesting for general purpose usage, so it is now time to reduce the technical debt by integrating the PTP traps used by Felix for tag_8021q with the rest of the Ocelot driver. There is further consolidation of traps to be done. The cookies used by MRP traps overlap with the cookies used for tag_8021q PTP traps, so those features could not be used at the same time. ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
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.