ACK: [SRU][N][PATCH 0/1] Fix missing XDP_UMEM_TX_METADATA_LEN in selftests/bpf

[Kevin Becker]

On Wed, Jul 1, 2026 at 1:26 AM Aaron Jauregui via kernel-team <
kernel-team at lists.ubuntu.com> wrote:

> BugLink: https://bugs.launchpad.net/bugs/2139686
>
> [ Impact ]
>
> ubuntu_bpf is failing on noble due to
> tools/testing/selftests/bpf/xdp_hw_metadata.c referencing
> XDP_UMEM_TX_METADATA_LEN, but the tools copy of include/uapi/if_xdp.h
> does not define it.
>
> Upstream commit d5e726d9143c was a series of 3 patches, but patch #3 of
> the series was dropped when cherry-picking. This third patch defines the
> symbol.
>
> [ Test Plan ]
>
> Build noble's bpf selftests, and check that the pre-existing error
> message (xdp_hw_metadata.c:82:26: error: 'XDP_UMEM_TX_METADATA_LEN'
> undeclared) no longer fires and the build completes successfully.
>
> [ Where problems could occur ]
>
> The change is not very invasive, only being comprised of 6 added lines
> across two files in tools/. Worst case scenario is a regression in the
> selftest that would show up as a test failure. Upstream patch has no
> follow-up fixes and has been in mainline since v6.11
>
> [ Other Info ]
>
> This is patch 3/3 of the original series sdf@ posted as
> https://lore.kernel.org/bpf/20240713015253.121248-1-sdf@fomichev.me. The
> other two patches are already in Noble, and this completes the series.
>
> Stanislav Fomichev (1):
>   selftests/bpf: Add XDP_UMEM_TX_METADATA_LEN to XSK TX metadata test
>
>  tools/include/uapi/linux/if_xdp.h                     | 4 ++++
>  tools/testing/selftests/bpf/prog_tests/xdp_metadata.c | 3 ++-
>  2 files changed, 6 insertions(+), 1 deletion(-)
>
>
>
Acked-by: Kevin Becker <kevin.becker at canonical.com>
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