kernel/tools/testing/selftests/bpf/prog_tests/fexit_test.c, branch linux-6.2.y

selftests/bpf: Migrate from bpf_prog_test_run

2022-02-03T06:31:18Z

bpf_prog_test_run is being deprecated in favor of the OPTS-based bpf_prog_test_run_opts. We end up unable to use CHECK in most cases, so replace usages with ASSERT_* calls. Signed-off-by: Delyan Kratunov Signed-off-by: Andrii Nakryiko Link: https://lore.kernel.org/bpf/20220202235423.1097270-2-delyank@fb.com

selftests/bpf: Add weak/typeless ksym test for light skeleton

2021-10-28T23:30:07Z

Also, avoid using CO-RE features, as lskel doesn't support CO-RE, yet. Include both light and libbpf skeleton in same file to test both of them together. In c48e51c8b07a ("bpf: selftests: Add selftests for module kfunc support"), I added support for generating both lskel and libbpf skel for a BPF object, however the name parameter for bpftool caused collisions when included in same file together. This meant that every test needed a separate file for a libbpf/light skeleton separation instead of subtests. Change that by appending a "_lskel" suffix to the name for files using light skeleton, and convert all existing users. Signed-off-by: Kumar Kartikeya Dwivedi Signed-off-by: Alexei Starovoitov Acked-by: Andrii Nakryiko Link: https://lore.kernel.org/bpf/20211028063501.2239335-7-memxor@gmail.com

selftests/bpf: Convert few tests to light skeleton.

2021-05-18T22:41:44Z

Convert few tests that don't use CO-RE to light skeleton. Signed-off-by: Alexei Starovoitov Signed-off-by: Daniel Borkmann Acked-by: Andrii Nakryiko Link: https://lore.kernel.org/bpf/20210514003623.28033-19-alexei.starovoitov@gmail.com

selftests/bpf: Add re-attach test to fexit_test

2021-04-26T04:09:02Z

Adding the test to re-attach (detach/attach again) tracing fexit programs, plus check that already linked program can't be attached again. Also switching to ASSERT* macros. Signed-off-by: Jiri Olsa Signed-off-by: Alexei Starovoitov Acked-by: Andrii Nakryiko Link: https://lore.kernel.org/bpf/20210414195147.1624932-5-jolsa@kernel.org

bpf: Add test ops for BPF_PROG_TYPE_TRACING

2020-03-04T21:41:06Z

The current fexit and fentry tests rely on a different program to exercise the functions they attach to. Instead of doing this, implement the test operations for tracing which will also be used for BPF_MODIFY_RETURN in a subsequent patch. Also, clean up the fexit test to use the generated skeleton. Signed-off-by: KP Singh Signed-off-by: Alexei Starovoitov Acked-by: Andrii Nakryiko Acked-by: Daniel Borkmann Link: https://lore.kernel.org/bpf/20200304191853.1529-7-kpsingh@chromium.org

selftests/bpf: Initialize duration variable before using

2020-01-24T10:05:45Z

The 'duration' variable is referenced in the CHECK() macro, and there are some uses of the macro before 'duration' is set. The clang compiler (validly) complains about this. Sample error: .../selftests/bpf/prog_tests/fexit_test.c:23:6: warning: variable 'duration' is uninitialized when used here [-Wuninitialized] if (CHECK(err, "prog_load sched cls", "err %d errno %d\n", err, errno)) ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ .../selftests/bpf/test_progs.h:134:25: note: expanded from macro 'CHECK' if (CHECK(err, "prog_load sched cls", "err %d errno %d\n", err, errno)) ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ _CHECK(condition, tag, duration, format) ^~~~~~~~ Signed-off-by: John Sperbeck Signed-off-by: Stanislav Fomichev Signed-off-by: Daniel Borkmann Acked-by: Martin KaFai Lau Link: https://lore.kernel.org/bpf/20200123235144.93610-1-sdf@google.com

selftests/bpf: Add fexit tests for BPF trampoline

2019-11-15T22:43:28Z

Add fexit tests for BPF trampoline that checks kernel functions with up to 6 arguments of different sizes and their return values. Signed-off-by: Alexei Starovoitov Signed-off-by: Daniel Borkmann Acked-by: Song Liu Link: https://lore.kernel.org/bpf/20191114185720.1641606-11-ast@kernel.org