mirror of
https://github.com/hardkernel/linux.git
synced 2026-06-04 10:12:16 +09:00
62bf5fde5e
There is one place where we cannot avoid accessing driver data, and that is 2-step PTP TX timestamping, since the switch wants us to provide a timestamp request ID through the injection header, which naturally must come from a sequence number kept by the driver (it is generated by the .port_txtstamp method prior to the tagger's xmit). However, since other drivers like dsa_loop do not claim PTP support anyway, the DSA_SKB_CB(skb)->clone will always be NULL anyway, so if we move all PTP-related dereferences of struct ocelot and struct ocelot_port into a separate function, we can effectively ensure that this is dead code when the ocelot tagger is attached to non-ocelot switches, and the stateful portion of the tagger is more self-contained. Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com> Reviewed-by: Florian Fainelli <f.fainelli@gmail.com> 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.