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AF_XDP-interaction: Add README.org

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I keep forgetting the API docs, so lets add links in the README.

Signed-off-by: Jesper Dangaard Brouer <brouer@redhat.com>
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Jesper Dangaard Brouer
2021-11-05 13:40:20 +01:00
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#+Title: How to transfer info from XDP-prog to AF_XDP
This BPF-example show how use BTF to create a communication channel
between XDP-prog (running kernel-side) and AF_XDP user-space process.
* AF_XDP documentation
In kernel [[https://www.kernel.org/doc/html/latest/networking/af_xdp.html][documentation for AF_XDP]].
XDP-tools also contain documentation in [[https://github.com/xdp-project/xdp-tools/blob/master/lib/libxdp/README.org#using-af_xdp-sockets][libxdp for AF_XDP]], explaining
how to use the API, and the difference between the control-path and
data-path APIs.