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[ Upstream commit7a698edf95] xdp2_kern rewrites and forwards packets out on the same interface. Forwarding still works but rewrite got broken when xdp multibuffer support has been added. With xdp multibuffer a local copy of the packet has been introduced. The MAC address is now swapped in the local copy, but the local copy in not written back. Fix MAC address swapping be adding write back of modified packet. Fixes:7722517422("samples/bpf: fixup some tools to be able to support xdp multibuffer") Signed-off-by: Gerhard Engleder <gerhard@engleder-embedded.com> Reviewed-by: Andy Gospodarek <gospo@broadcom.com> Link: https://lore.kernel.org/r/20221015213050.65222-1-gerhard@engleder-embedded.com Signed-off-by: Martin KaFai Lau <martin.lau@kernel.org> 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.