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xdp_metadata test is flaky sometimes: verify_xsk_metadata:FAIL:rx_hash_type unexpected rx_hash_type: actual 8 != expected 0 Where 8 means XDP_RSS_TYPE_L4_ANY and is exported from veth driver only when 'skb->l4_hash' condition is met. This makes me think that the program is triggering again for some other packet. Let's have a filter, similar to xdp_hw_metadata, where we trigger XDP kfuncs only for UDP packets destined to port 8080. Signed-off-by: Stanislav Fomichev <sdf@google.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Link: https://lore.kernel.org/bpf/20231204174423.3460052-1-sdf@google.com