v4: address comment from Daniel Xu: - use human-readable test names in 2/2 v3: address comments from Andrii: - prune verbose error message in 1/2 - use bpf_link_create internally in 1/2 - use subtests in patch 2/2 When initial netfilter bpf program type support got added one suggestion was to extend libbpf with a helper to ease attachment of nf programs to the hook locations. Add such a helper and a demo test case that attaches a dummy program to various combinations. I tested that the selftest fails when changing the expected outcome (i.e., set 'success' when it should fail and v.v.). Florian Westphal (2): tools: libbpf: add netfilter link attach helper selftests/bpf: Add bpf_program__attach_netfilter helper test tools/lib/bpf/bpf.c | 6 ++ tools/lib/bpf/bpf.h | 6 ++ tools/lib/bpf/libbpf.c | 42 +++++++++ tools/lib/bpf/libbpf.h | 15 ++++ tools/lib/bpf/libbpf.map | 1 + .../bpf/prog_tests/netfilter_link_attach.c | 86 +++++++++++++++++++ .../bpf/progs/test_netfilter_link_attach.c | 14 +++ 7 files changed, 170 insertions(+) create mode 100644 tools/testing/selftests/bpf/prog_tests/netfilter_link_attach.c create mode 100644 tools/testing/selftests/bpf/progs/test_netfilter_link_attach.c -- 2.39.3
