Changes in testing_helpers.h

4192bb29 - selftests/bpf: Provide a generic [un]load_module helper

Thu, 10 Oct 2024 13:27:08 +0000

selftests/bpf: Provide a generic [un]load_module helperGeneralize the previous [un]load_bpf_testmod() helpers (intesting_helpers.c) to the more generic [un]load_module(), which canload an arbitrary kernel module by name. This allows future selfteststo more easily load custom kernel modules other than bpf_testmod.ko.Refactor [un]load_bpf_testmod() to wrap this new helper.Signed-off-by: Simon Sundberg Acked-by: Jiri Olsa Acked-by: Kumar Kartikeya Dwivedi Signed-off-by: Toke Høiland-Jørgensen Link: https://lore.kernel.org/r/20241010-fix-kfunc-btf-caching-for-modules-v2-2-745af6c1af98@redhat.comSigned-off-by: Alexei Starovoitov List of files: /linux-6.15/tools/testing/selftests/bpf/testing_helpers.h

e9bbda13 - selftests/bpf: Test case for lacking CFI stub functions.

Thu, 22 Feb 2024 02:11:05 +0000

selftests/bpf: Test case for lacking CFI stub functions.Ensure struct_ops rejects the registration of struct_ops types withoutproper CFI stub functions.bpf_test_no_cfi.ko is a module that attempts to register a struct_ops typecalled "bpf_test_no_cfi_ops" with cfi_stubs of NULL and non-NULL value.The NULL one should fail, and the non-NULL one should succeed. The modulecan only be loaded successfully if these registrations yield the expectedresults.Signed-off-by: Kui-Feng Lee Link: https://lore.kernel.org/r/20240222021105.1180475-3-thinker.li@gmail.comSigned-off-by: Martin KaFai Lau List of files: /linux-6.15/tools/testing/selftests/bpf/testing_helpers.h

15b4f88d - selftests/bpf: Move is_jit_enabled() into testing_helpers

Tue, 23 Jan 2024 09:03:50 +0000

selftests/bpf: Move is_jit_enabled() into testing_helpersCurrently, is_jit_enabled() is only used in test_progs, move it intotesting_helpers so that it can be used in test_verifier. While at it,remove the second argument "0" of open() as Hou Tao suggested.Signed-off-by: Tiezhu Yang Signed-off-by: Andrii Nakryiko Acked-by: Hou Tao Acked-by: Song Liu Link: https://lore.kernel.org/bpf/20240123090351.2207-2-yangtiezhu@loongson.cn List of files: /linux-6.15/tools/testing/selftests/bpf/testing_helpers.h

56d3e44a - selftests/bpf: detect testing prog flags support

Tue, 09 Jan 2024 23:17:38 +0000

selftests/bpf: detect testing prog flags supportVarious tests specify extra testing prog_flags when loading BPFprograms, like BPF_F_TEST_RND_HI32, and more recently alsoBPF_F_TEST_REG_INVARIANTS. While BPF_F_TEST_RND_HI32 is old enough tonot cause much problem on older kernels, BPF_F_TEST_REG_INVARIANTS isvery fresh and unconditionally specifying it causes selftests to fail oneven slightly outdated kernels.This breaks libbpf CI test against 4.9 and 5.15 kernels, it can breaksome local development (done outside of VM), etc.To prevent this, and guard against similar problems in the future, doruntime detection of supported "testing flags", and only provide thosethat host kernel recognizes.Acked-by: Song Liu Acked-by: Jiri Olsa Signed-off-by: Andrii Nakryiko Link: https://lore.kernel.org/r/20240109231738.575844-1-andrii@kernel.orgSigned-off-by: Alexei Starovoitov List of files: /linux-6.15/tools/testing/selftests/bpf/testing_helpers.h

b4b7a409 - selftests/bpf: Factor out get_xlated_program() helper

Fri, 05 Jan 2024 10:48:18 +0000

selftests/bpf: Factor out get_xlated_program() helperBoth test_verifier and test_progs use get_xlated_program(), so movingthe helper into testing_helpers.h to reuse it.Acked-by: Eduard Zingerman Signed-off-by: Hou Tao Link: https://lore.kernel.org/r/20240105104819.3916743-3-houtao@huaweicloud.comSigned-off-by: Alexei Starovoitov List of files: /linux-6.15/tools/testing/selftests/bpf/testing_helpers.h

4c6612f6 - selftests/bpf: Check VLAN tag and proto in xdp_metadata

Tue, 05 Dec 2023 21:08:47 +0000

selftests/bpf: Check VLAN tag and proto in xdp_metadataVerify, whether VLAN tag and proto are set correctly.To simulate "stripped" VLAN tag on veth, send test packet from VLANinterface.Also, add TO_STR() macro for convenience.Acked-by: Stanislav Fomichev Signed-off-by: Larysa Zaremba Link: https://lore.kernel.org/r/20231205210847.28460-19-larysa.zaremba@intel.comSigned-off-by: Alexei Starovoitov List of files: /linux-6.15/tools/testing/selftests/bpf/testing_helpers.h

3830d04a - selftests/bpf: Move get_time_ns to testing_helpers.h

Wed, 09 Aug 2023 08:34:30 +0000

selftests/bpf: Move get_time_ns to testing_helpers.hWe'd like to have single copy of get_time_ns used b bench and test_progs,but we can't just include bench.h, because of conflicting 'struct env'objects.Moving get_time_ns to testing_helpers.h which is being included by bothbench and test_progs objects.Signed-off-by: Jiri Olsa Link: https://lore.kernel.org/r/20230809083440.3209381-19-jolsa@kernel.orgSigned-off-by: Alexei Starovoitov List of files: /linux-6.15/tools/testing/selftests/bpf/testing_helpers.h

11642eb9 - selftests/bpf: Use un/load_bpf_testmod functions in tests

Mon, 15 May 2023 13:37:52 +0000

selftests/bpf: Use un/load_bpf_testmod functions in testsNow that we have un/load_bpf_testmod helpers in testing_helpers.h,we can use it in other tests and save some lines.Acked-by: David Vernet Signed-off-by: Jiri Olsa Link: https://lore.kernel.org/r/20230515133756.1658301-7-jolsa@kernel.orgSigned-off-by: Alexei Starovoitov List of files: /linux-6.15/tools/testing/selftests/bpf/testing_helpers.h

45db3109 - selftests/bpf: Move test_progs helpers to testing_helpers object

Mon, 15 May 2023 13:37:49 +0000

selftests/bpf: Move test_progs helpers to testing_helpers objectMoving test_progs helpers to testing_helpers object so they can beused from test_verifier in following changes.Also adding missing ifndef header guard to testing_helpers.h header.Using stderr instead of env.stderr because un/load_bpf_testmod helperswill be used outside test_progs. Also at the point of calling themin test_progs the std files are not hijacked yet and stderr is thesame as env.stderr.Acked-by: David Vernet Signed-off-by: Jiri Olsa Link: https://lore.kernel.org/r/20230515133756.1658301-4-jolsa@kernel.orgSigned-off-by: Alexei Starovoitov List of files: /linux-6.15/tools/testing/selftests/bpf/testing_helpers.h

64276f01 - selftests/bpf: Test_progs can read test lists from file

Thu, 27 Apr 2023 22:53:33 +0000

selftests/bpf: Test_progs can read test lists from fileImprove test selection logic when using -a/-b/-d/-t options.The list of tests to include or exclude can now be read from a file,specified as @.The file contains one name (or wildcard pattern) per line, andcomments beginning with # are ignored.These options can be passed multiple times to read more than one file.Signed-off-by: Stephen Veiss Signed-off-by: Andrii Nakryiko Acked-by: Yonghong Song Link: https://lore.kernel.org/bpf/20230427225333.3506052-3-sveiss@meta.com List of files: /linux-6.15/tools/testing/selftests/bpf/testing_helpers.h

de6d014a - selftests/bpf: Use read_perf_max_sample_freq() in perf_event_stackmap

Wed, 12 Apr 2023 21:04:21 +0000

selftests/bpf: Use read_perf_max_sample_freq() in perf_event_stackmapCurrently, perf_event sample period in perf_event_stackmap is set too lowthat 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 List of files: /linux-6.15/tools/testing/selftests/bpf/testing_helpers.h

61ddff37 - selftests/bpf: Improve by-name subtest selection logic in prog_tests

Sat, 09 Apr 2022 00:17:49 +0000

selftests/bpf: Improve by-name subtest selection logic in prog_testsImprove subtest selection logic when using -t/-a/-d parameters.In particular, more than one subtest can be specified or acombination of tests / subtests.-a send_signal -d send_signal/send_signal_nmi* - runs send_signaltest without nmi tests-a send_signal/send_signal_nmi*,find_vma - runs two send_signalsubtests 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_signalnmi subtests-t send_signal -t find_vma - runs two *send_signal* tests and one*find_vma* testThis will allow us to have granular control over which subteststo disable in the CI system instead of disabling whole tests.Also, add new selftest to avoid possible regression whenchanging 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 List of files: /linux-6.15/tools/testing/selftests/bpf/testing_helpers.h

f87c1930 - selftests/bpf: Merge test_stub.c into testing_helpers.c

Wed, 03 Nov 2021 22:08:43 +0000

selftests/bpf: Merge test_stub.c into testing_helpers.cMove testing prog and object load wrappers (bpf_prog_test_load andbpf_test_load_program) into testing_helpers.{c,h} and get rid ofotherwise useless test_stub.c. Make testing_helpers.c available tonon-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 List of files: /linux-6.15/tools/testing/selftests/bpf/testing_helpers.h

90806ccc - selftests/bpf: Add link detach tests for cgroup, netns, and xdp bpf_links

Fri, 31 Jul 2020 18:28:28 +0000

selftests/bpf: Add link detach tests for cgroup, netns, and xdp bpf_linksAdd bpf_link__detach() testing to selftests for cgroup, netns, and xdpbpf_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 List of files: /linux-6.15/tools/testing/selftests/bpf/testing_helpers.h

cd49291c - selftests/bpf: Extract parse_num_list into generic testing_helpers.c

Tue, 12 May 2020 19:24:42 +0000

selftests/bpf: Extract parse_num_list into generic testing_helpers.cAdd testing_helpers.c, which will contain generic helpers for test runners andtests needing some common generic functionality, like parsing a set ofnumbers.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 List of files: /linux-6.15/tools/testing/selftests/bpf/testing_helpers.h