This series fixes the XDP feature test and moves it to drivers/net/hw. The tester uses AF_PACKET, so the remote host does not need native XDP. Existing remote XDP programs and offload settings are left unchanged.
Changes since v4: - Rebase onto net-next 8df0638138d3. - Split the helper fixes, packet probes, build rules and framework move into five patches. - Move the common BPF rules, including %.skel.h, into net/bpf.mk. - Use installed kernel headers and register the helper in TEST_GEN_FILES. - Handle short control messages, EOF and helper timeouts. Use XDP links on the DUT to release the test's attachment when the process exits. - Skip unsupported native XDP and veth XDP_TX without a peer XDP program. Tested on x86_64 Ubuntu with Linux 6.8.0-124-generic: - headers_install and the xdp_features build passed. - Three veth setups: 17 PASS, 1 expected XDP_TX SKIP, no failures. - Nine error and cleanup checks passed. Existing programs and offload settings were unchanged, with no helpers or namespaces left behind. - Patch 2: two concurrent runs passed all six cases each; repeated TERM also left no helpers or namespaces. - Protocol framing checks, Ruff, pylint and git diff --check passed. These tests used veth devices. Physical-NIC testing remains unverified. Previous version: https://lore.kernel.org/all/[email protected]/ Signed-off-by: Bochao Cao <[email protected]> --- Bochao Cao (5): selftests/bpf: Fix XDP feature test setup and teardown selftests/bpf: Track XDP test processes and isolate namespaces selftests/bpf: Send XDP feature probes with AF_PACKET selftests/net: Add a shared BPF skeleton rule selftests/net: Move the XDP feature test to drivers/net/hw tools/testing/selftests/bpf/Makefile | 11 +- tools/testing/selftests/bpf/test_xdp_features.sh | 107 --- tools/testing/selftests/bpf/xdp_features.c | 719 -------------- tools/testing/selftests/drivers/net/README.rst | 18 + tools/testing/selftests/drivers/net/hw/.gitignore | 3 + tools/testing/selftests/drivers/net/hw/Makefile | 15 +- tools/testing/selftests/drivers/net/hw/config | 3 + .../net/hw/xdp_features.bpf.c} | 42 +- .../selftests/drivers/net/hw/xdp_features.c | 1003 ++++++++++++++++++++ .../{bpf => drivers/net/hw}/xdp_features.h | 1 + .../selftests/drivers/net/hw/xdp_features.py | 137 +++ tools/testing/selftests/net/bpf.mk | 25 + 12 files changed, 1212 insertions(+), 872 deletions(-) --- base-commit: 8df0638138d3e0344fd1fb36cf2d1ca1cf5028f0 change-id: 20261008-xdp-v5-send-20261008-301d0e1d3165 Best regards, -- Bochao Cao <[email protected]>
