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[ Upstream commit295de650d3] While adding support for parsing the redbox supervision frames, the author added `pull_size' and `total_pull_size' to track the amount of bytes that were pulled from the skb during while parsing the skb so it can be reverted/ pushed back at the end. In the process probably copy&paste error occurred and for the HSRv1 case the ethhdr was used instead of the hsr_tag. Later the hsr_tag was used instead of hsr_sup_tag. The later error didn't matter because both structs have the size so HSRv0 was still working. It broke however HSRv1 parsing because struct ethhdr is larger than struct hsr_tag. Reinstate the old pulling flow and pull first ethhdr, hsr_tag in v1 case followed by hsr_sup_tag. [bigeasy: commit message] Fixes:eafaa88b3e("net: hsr: Add support for redbox supervision frames")' Suggested-by: Tristram.Ha@microchip.com Signed-off-by: Lukasz Majewski <lukma@denx.de> Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Reviewed-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Signed-off-by: David S. Miller <davem@davemloft.net> 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.