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

selftests/bpf: Use read_perf_max_sample_freq() in perf_event_stackmap

2023-05-11T14:11:14Z

[ Upstream commit de6d014a09bf12a9a8959d60c0a1d4a41d394a89 ] Currently, perf_event sample period in perf_event_stackmap is set too low that the test fails randomly. Fix this by using the max sample frequency, from read_perf_max_sample_freq(). Move read_perf_max_sample_freq() to testing_helpers.c. Replace the CHECK() with if-printf, as CHECK is not available in testing_helpers.c. Fixes: 1da4864c2b20 ("selftests/bpf: Add callchain_stackid") Signed-off-by: Song Liu Signed-off-by: Daniel Borkmann Link: https://lore.kernel.org/bpf/20230412210423.900851-2-song@kernel.org Signed-off-by: Sasha Levin

selftests/bpf: Improve by-name subtest selection logic in prog_tests

2022-04-11T03:08:20Z

Improve subtest selection logic when using -t/-a/-d parameters. In particular, more than one subtest can be specified or a combination of tests / subtests. -a send_signal -d send_signal/send_signal_nmi* - runs send_signal test without nmi tests -a send_signal/send_signal_nmi*,find_vma - runs two send_signal subtests and find_vma test -a 'send_signal*' -a find_vma -d send_signal/send_signal_nmi* - runs 2 send_signal test and find_vma test. Disables two send_signal nmi subtests -t send_signal -t find_vma - runs two *send_signal* tests and one *find_vma* test This will allow us to have granular control over which subtests to disable in the CI system instead of disabling whole tests. Also, add new selftest to avoid possible regression when changing prog_test test name selection logic. Signed-off-by: Mykola Lysenko Signed-off-by: Andrii Nakryiko Link: https://lore.kernel.org/bpf/20220409001750.529930-1-mykolal@fb.com

selftests/bpf: Fix issues in parse_num_list()

2022-04-06T17:10:03Z

The function does not check that parsing_end is false after parsing argument. Thus, if the final part of the argument is something like '4-', which is invalid, parse_num_list() will discard it instead of returning -EINVAL. Before: $ ./test_progs -n 2,4- #2 atomic_bounds:OK Summary: 1/0 PASSED, 0 SKIPPED, 0 FAILED After: $ ./test_progs -n 2,4- Failed to parse test numbers. Signed-off-by: Yuntao Wang Signed-off-by: Andrii Nakryiko Link: https://lore.kernel.org/bpf/20220406003622.73539-1-ytcoode@gmail.com

selftests/bpf: Remove the only use of deprecated bpf_object__load_xattr()

2021-12-10T23:29:18Z

Switch from bpf_object__load_xattr() to bpf_object__load() and kernel_log_level in bpf_object_open_opts. Signed-off-by: Andrii Nakryiko Signed-off-by: Alexei Starovoitov Link: https://lore.kernel.org/bpf/20211209193840.1248570-12-andrii@kernel.org

libbpf: Change bpf_program__set_extra_flags to bpf_program__set_flags

2021-11-19T22:21:37Z

bpf_program__set_extra_flags has just been introduced so we can still change it without breaking users. This new interface is a bit more flexible (for example if someone wants to clear a flag). Signed-off-by: Florent Revest Signed-off-by: Andrii Nakryiko Link: https://lore.kernel.org/bpf/20211119180035.1396139-1-revest@chromium.org

selftests/bpf: Fix bpf_prog_test_load() logic to pass extra log level

2021-11-12T00:44:26Z

After recent refactoring bpf_prog_test_load(), used across multiple selftests, lost ability to specify extra log_level 1 or 2 (for -vv and -vvv, respectively). Fix that problem by using bpf_object__load_xattr() API that supports extra log_level flags. Also restore BPF_F_TEST_RND_HI32 prog_flags by utilizing new bpf_program__set_extra_flags() API. Fixes: f87c1930ac29 ("selftests/bpf: Merge test_stub.c into testing_helpers.c") Reported-by: Alexei Starovoitov Signed-off-by: Andrii Nakryiko Signed-off-by: Alexei Starovoitov Link: https://lore.kernel.org/bpf/20211111051758.92283-3-andrii@kernel.org

selftests/bpf: Merge test_stub.c into testing_helpers.c

2021-11-07T16:34:23Z

Move testing prog and object load wrappers (bpf_prog_test_load and bpf_test_load_program) into testing_helpers.{c,h} and get rid of otherwise useless test_stub.c. Make testing_helpers.c available to non-test_progs binaries as well. Signed-off-by: Andrii Nakryiko Signed-off-by: Alexei Starovoitov Acked-by: Dave Marchevsky Link: https://lore.kernel.org/bpf/20211103220845.2676888-11-andrii@kernel.org

selftests/bpf: Add link detach tests for cgroup, netns, and xdp bpf_links

2020-08-02T03:38:28Z

Add bpf_link__detach() testing to selftests for cgroup, netns, and xdp bpf_links. Signed-off-by: Andrii Nakryiko Signed-off-by: Alexei Starovoitov Acked-by: Song Liu Acked-by: John Fastabend Link: https://lore.kernel.org/bpf/20200731182830.286260-4-andriin@fb.com

selftests/bpf: Extract parse_num_list into generic testing_helpers.c

2020-05-13T19:19:38Z

Add testing_helpers.c, which will contain generic helpers for test runners and tests needing some common generic functionality, like parsing a set of numbers. Signed-off-by: Andrii Nakryiko Signed-off-by: Alexei Starovoitov Acked-by: Yonghong Song Link: https://lore.kernel.org/bpf/20200512192445.2351848-2-andriin@fb.com