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

selftests/bpf: test eager BPF ringbuf size adjustment logic

2022-07-19T17:01:20Z

Add test validating that libbpf adjusts (and reflects adjusted) ringbuf size early, before bpf_object is loaded. Also make sure we can't successfully resize ringbuf map after bpf_object is loaded. Signed-off-by: Andrii Nakryiko Acked-by: Yonghong Song Link: https://lore.kernel.org/r/20220715230952.2219271-2-andrii@kernel.org Signed-off-by: Alexei Starovoitov

selftests/bpf: Test libbpf's ringbuf size fix up logic

2022-05-09T15:15:32Z

Make sure we always excercise libbpf's ringbuf map size adjustment logic by specifying non-zero size that's definitely not a page size multiple. Signed-off-by: Andrii Nakryiko Signed-off-by: Daniel Borkmann Link: https://lore.kernel.org/bpf/20220509004148.1801791-10-andrii@kernel.org

selftests/bpf: Migrate selftests to bpf_map_create()

2021-11-25T22:37:38Z

Conversion is straightforward for most cases. In few cases tests are using mutable map_flags and attribute structs, but bpf_map_create_opts can be used in the similar fashion, so there were no problems. Just lots of repetitive conversions. Signed-off-by: Andrii Nakryiko Signed-off-by: Daniel Borkmann Link: https://lore.kernel.org/bpf/20211124193233.3115996-5-andrii@kernel.org

selftests/bpf: Turn on libbpf 1.0 mode and fix all IS_ERR checks

2021-05-26T00:32:35Z

Turn ony libbpf 1.0 mode. Fix all the explicit IS_ERR checks that now will be broken because libbpf returns NULL on error (and sets errno). Fix ASSERT_OK_PTR and ASSERT_ERR_PTR to work for both old mode and new modes and use them throughout selftests. This is trivial to do by using libbpf_get_error() API that all libbpf users are supposed to use, instead of IS_ERR checks. A bunch of checks also did explicit -1 comparison for various fd-returning APIs. Such checks are replaced with >= 0 or < 0 cases. There were also few misuses of bpf_object__find_map_by_name() in test_maps. Those are fixed in this patch as well. Signed-off-by: Andrii Nakryiko Signed-off-by: Alexei Starovoitov Acked-by: John Fastabend Acked-by: Toke Høiland-Jørgensen Link: https://lore.kernel.org/bpf/20210525035935.1461796-3-andrii@kernel.org

selftests/bpf: ringbuf_multi: Test bpf_map__set_inner_map_fd

2021-04-09T06:54:48Z

Test map__set_inner_map_fd() interaction with map-in-map initialization. Use hashmap of maps just to make it different to existing array of maps. Signed-off-by: Yauheni Kaliuta Signed-off-by: Andrii Nakryiko Link: https://lore.kernel.org/bpf/20210408061310.95877-9-yauheni.kaliuta@redhat.com

selftests/bpf: ringbuf_multi: Use runtime page size

2021-04-09T06:54:48Z

Set bpf table sizes dynamically according to the runtime page size value. Do not switch to ASSERT macros, keep CHECK, for consistency with the rest of the test. Can be a separate cleanup patch. Signed-off-by: Yauheni Kaliuta Signed-off-by: Andrii Nakryiko Link: https://lore.kernel.org/bpf/20210408061310.95877-8-yauheni.kaliuta@redhat.com

libbpf: Fix ring_buffer__poll() to return number of consumed samples

2020-12-02T04:21:45Z

Fix ring_buffer__poll() to return the number of non-discarded records consumed, just like its documentation states. It's also consistent with ring_buffer__consume() return. Fix up selftests with wrong expected results. Fixes: bf99c936f947 ("libbpf: Add BPF ring buffer support") Fixes: cb1c9ddd5525 ("selftests/bpf: Add BPF ringbuf selftests") Signed-off-by: Andrii Nakryiko Signed-off-by: Alexei Starovoitov Link: https://lore.kernel.org/bpf/20201130223336.904192-1-andrii@kernel.org

selftests/bpf: Add BPF ringbuf selftests

2020-06-01T21:38:22Z

Both singleton BPF ringbuf and BPF ringbuf with map-in-map use cases are tested. Also reserve+submit/discards and output variants of API are validated. Signed-off-by: Andrii Nakryiko Signed-off-by: Daniel Borkmann Link: https://lore.kernel.org/bpf/20200529075424.3139988-4-andriin@fb.com Signed-off-by: Alexei Starovoitov