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commitf73c119463upstream. The MPTCP in kernel path manager has some constraints on incoming addresses announce processing, so that in edge scenarios it can end-up dropping (ignoring) some of such announces. The above is not very limiting in practice since such scenarios are very uncommon and MPTCP will recover due to ADD_ADDR retransmissions. This patch adds a few MIB counters to account for such drop events to allow easier introspection of the critical scenarios. Fixes:f7efc7771e("mptcp: drop argument port from mptcp_pm_announce_addr") Reviewed-by: Matthieu Baerts <matthieu.baerts@tessares.net> Signed-off-by: Paolo Abeni <pabeni@redhat.com> Signed-off-by: Mat Martineau <mathew.j.martineau@linux.intel.com> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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.