Re: [PATCH bpf-next,v3 0/2] Clarify and Enhance XDP Rx Metadata Handling

On 07/03, Song Yoong Siang wrote:

This patch set improves the documentation and selftests for XDP Rx metadata handling. The first patch clarifies the documentation around XDP metadata layout and METADATA_SIZE. The second patch enhances the BPF selftests to make XDP metadata handling more robust across different NICs.

Prior to this patch set, the XDP program might accidentally overwrite the device-reserved metadata.

V3:

• update doc and commit msg accordingly.

V2: https://lore.kernel.org/netdev/20250702030349.3275368-1-yoong.siang.song@int...

• unconditionally do bpf_xdp_adjust_meta with -XDP_METADATA_SIZE (Stanislav)

V1: https://lore.kernel.org/netdev/20250701042940.3272325-1-yoong.siang.song@int...

Acked-by: Stanislav Fomichev sdf@fomichev.me