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We can treat SKB_GSO_GRE almost exactly the same as UDP tunnels, except that we don't want to edit the outer UDP len (as there isn't one). For SKB_GSO_GRE_CSUM, we have to use GSO_PARTIAL as the device doesn't support offload of non-UDP outer L4 checksums. Signed-off-by: Edward Cree <ecree@solarflare.com> Signed-off-by: Jakub Kicinski <kuba@kernel.org> Acked-by: Martin Habets <mhabets@solarflare.com> Reviewed-by: Alexander Duyck <alexanderduyck@fb.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 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.