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[ Upstream commit48b491a5cc] Commit2e9f60932a("net: hsr: check skb can contain struct hsr_ethhdr in fill_frame_info") added the following which resulted in -EINVAL always being returned: if (skb->mac_len < sizeof(struct hsr_ethhdr)) return -EINVAL; mac_len was not being set correctly so this check completely broke HSR/PRP since it was always 14, not 20. Set mac_len correctly and modify the mac_len checks to test in the correct places since sometimes it is legitimately 14. Fixes:2e9f60932a("net: hsr: check skb can contain struct hsr_ethhdr in fill_frame_info") Signed-off-by: George McCollister <george.mccollister@gmail.com> 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.