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[ Upstream commit 96a3a03abf3d8cc38cd9cb0d280235fbcf7c3f7f ] On HSRv0, no supervision frames were sent. The supervison frames were generated successfully, but failed the check for a sufficiently long mac header, i.e., at least sizeof(struct hsr_ethhdr), in hsr_fill_frame_info() because the mac header only contained the ethernet header. Fix this by including the HSR header in the mac header when generating HSR supervision frames. Note that the mac header now also includes the TLV fields. This matches how we set the headers on rx and also the size of struct hsrv0_ethhdr_sp. Reported-by: Hangbin Liu <liuhangbin@gmail.com> Closes: https://lore.kernel.org/netdev/aMONxDXkzBZZRfE5@fedora/ Fixes: 9cfb5e7f0ded ("net: hsr: fix hsr_init_sk() vs network/transport headers.") Signed-off-by: Felix Maurer <fmaurer@redhat.com> Reviewed-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Tested-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Link: https://patch.msgid.link/4354114fea9a642fe71f49aeeb6c6159d1d61840.1762876095.git.fmaurer@redhat.com Tested-by: Hangbin Liu <liuhangbin@gmail.com> Signed-off-by: Paolo Abeni <pabeni@redhat.com> Signed-off-by: Sasha Levin <sashal@kernel.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.