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Willem de Bruijn says:
====================
preserve MSG_ZEROCOPY with forwarding
Avoid false positive copying of zerocopy skb frags when entering the
ingress path if the skb is not queued locally but forwarded.
Patch 1 for more details and feature.
Patch 2 converts the existing selftest to a pass/fail test and adds
coverage for this new feature.
====================
Link: https://patch.msgid.link/20250630194312.1571410-1-willemdebruijn.kernel@gmail.com
Signed-off-by: Jakub Kicinski <kuba@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 reStructuredText 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.