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The patch adds a basic XDP processing to xen-netfront driver. We ran an XDP program for an RX response received from netback driver. Also we request xen-netback to adjust data offset for bpf_xdp_adjust_head() header space for custom headers. synchronization between frontend and backend parts is done by using xenbus state switching: Reconfiguring -> Reconfigured- > Connected UDP packets drop rate using xdp program is around 310 kpps using ./pktgen_sample04_many_flows.sh and 160 kpps without the patch. Signed-off-by: Denis Kirjanov <kda@linux-powerpc.org> Signed-off-by: David S. Miller <davem@davemloft.net>
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.