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commit 935ff5bb8a1cfcdf8e60c8f5c794d0bbbc234437 upstream. A peer can notify the other one that a subflow has to be treated as "backup" by two different ways: either by sending a dedicated MP_PRIO notification, or by setting the backup flag in the MP_JOIN handshake. The selftests were previously monitoring the former, but not the latter. This is what is now done here by looking at these new MIB counters when validating the 'backup' cases: MPTcpExtMPJoinSynBackupRx MPTcpExtMPJoinSynAckBackupRx The 'Fixes' tag here below is the same as the one from the previous commit: this patch here is not fixing anything wrong in the selftests, but it will help to validate a new fix for an issue introduced by this commit ID. Fixes:4596a2c1b7("mptcp: allow creating non-backup subflows") Cc: stable@vger.kernel.org Reviewed-by: Mat Martineau <martineau@kernel.org> Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org> Signed-off-by: Paolo Abeni <pabeni@redhat.com> [ Conflicts in mptcp_join.sh because the check are done has changed, e.g. in commit03668c65d1("selftests: mptcp: join: rework detailed report"), or commit985de45923("selftests: mptcp: centralize stats dumping"), etc. Adaptations have been made to use the old way, similar to what is done just above. ] Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org> 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.