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This change adds a struct mctp_dst, representing the result of a routing lookup. This decouples the struct mctp_route from the actual implementation of a routing operation. This will allow for future routing changes which may require more involved lookup logic, such as gateway routing - which may require multiple traversals of the routing table. Since we only use the struct mctp_route at lookup time, we no longer hold routes over a routing operation, as we only need it to populate the dst. However, we do hold the dev while the dst is active. This requires some changes to the route test infrastructure, as we no longer have a mock route to handle the route output operation, and transient dsts are created by the routing code, so we can't override them as easily. Instead, we use kunit->priv to stash a packet queue, and a custom dst_output function queues into that packet queue, which we can use for later expectations. Signed-off-by: Jeremy Kerr <jk@codeconstruct.com.au> Link: https://patch.msgid.link/20250702-dev-forwarding-v5-3-1468191da8a4@codeconstruct.com.au Signed-off-by: Paolo Abeni <pabeni@redhat.com>
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.