Re: [[RFC xdp-hints] 13/16] libbpf: Helpers to access XDP frame metadata

[Andrii Nakryiko <andrii.nakryiko@gmail.com>]

On Mon, Aug 2, 2021 at 6:04 PM Ederson de Souza
<ederson.desouza@intel.com> wrote:
>
> Two new pairs of helpers: `xsk_umem__adjust_prod_data` and
> `xsk_umem__adjust_prod_data_meta` for data that is being produced by the
> application - such as data that will be sent; and
> `xsk_umem__adjust_cons_data` and `xsk_umem__adjust_cons_data_meta`,
> for data being consumed - such as data obtained from the completion
> queue.
>
> Those function should usually be used on data obtained via
> `xsk_umem__get_data`. Didn't change this function to avoid API breaks.
>
> Signed-off-by: Ederson de Souza <ederson.desouza@intel.com>
> ---

AF_XDP parts of libbpf are being moved into libxdp ([0]). We shouldn't
keep adding new APIs if we are actively working on deprecating and
removing existing functionality already. CC'ing Toke and Magnus for
the state of libxsk to libxdp migration.

  [0] https://github.com/xdp-project/xdp-tools/tree/master/lib/libxdp#using-af_xdp-sockets


>  tools/lib/bpf/libbpf.map |  4 ++++
>  tools/lib/bpf/xsk.c      | 26 ++++++++++++++++++++++++++
>  tools/lib/bpf/xsk.h      |  7 +++++++
>  3 files changed, 37 insertions(+)
>

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