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Signal clearly to the user, via an error, that mixing IPv4 and IPv6 rules in the same matcher is not supported. Previously such cases silently failed by adding a rule that did not work correctly. Rules can specify an IP version by one of two fields: IP version or ethertype. At matcher creation, store whether the template matches on any of these two fields. If yes, inspect each rule for its corresponding match value and store the IP version inside the matcher to guard against inconsistencies with subsequent rules. Furthermore, also check rules for internal consistency, i.e. verify that the ethertype and IP version match values do not contradict each other. The logic applies to inner and outer headers independently, to account for tunneling. Rules that do not match on IP addresses are not affected. Signed-off-by: Vlad Dogaru <vdogaru@nvidia.com> Reviewed-by: Yevgeny Kliteynik <kliteyn@nvidia.com> Signed-off-by: Mark Bloch <mbloch@nvidia.com> Link: https://patch.msgid.link/20250422092540.182091-4-mbloch@nvidia.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.