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The tool xdp_hw_metadata can be used by driver developers implementing XDP-hints metadata kfuncs. Remove all bpf_printk calls, as the tool already transfers all the XDP-hints related information via metadata area to AF_XDP userspace process. Add counters for providing remaining information about failure and skipped packet events. Signed-off-by: Jesper Dangaard Brouer <brouer@redhat.com> Acked-by: Stanislav Fomichev <sdf@google.com> Link: https://lore.kernel.org/r/168132891533.340624.7313781245316405141.stgit@firesoul Signed-off-by: Alexei Starovoitov <ast@kernel.org>