Re: [PATCH bpf-next v2 5/8] libbpf, xsk: select AF_XDP BPF program based on kernel version

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Björn Töpel <bjorn.topel@xxxxxxxxx> writes:

> From: Björn Töpel <bjorn.topel@xxxxxxxxx>
>
> Add detection for kernel version, and adapt the BPF program based on
> kernel support. This way, users will get the best possible performance
> from the BPF program.

Please do explicit feature detection instead of relying on the kernel
version number; some distro kernels are known to have a creative notion
of their own version, which is not really related to the features they
actually support (I'm sure you know which one I'm referring to ;)).

-Toke





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