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These are 4 constants described in rfc8899#section-5.1.2: MAX_PROBES, MIN_PLPMTU, MAX_PLPMTU, BASE_PLPMTU; And 2 variables described in rfc8899#section-5.1.3: PROBED_SIZE, PROBE_COUNT; And 5 states described in rfc8899#section-5.2: DISABLED, BASE, SEARCH, SEARCH_COMPLETE, ERROR; And these 4 APIs are used to reset/update PLPMTUD, check if PLPMTUD is enabled, and calculate the additional headers length for a transport. Note the member 'probe_high' in transport will be set to the probe size when a probe fails with this probe size in the next patches. Signed-off-by: Xin Long <lucien.xin@gmail.com> Acked-by: Marcelo Ricardo Leitner <marcelo.leitner@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.