lwn.git/tools/testing/selftests/bpf/prog_tests/string_kfuncs.c, branch master

selftests/bpf: Test kfunc bpf_strncasecmp

2026-01-21T17:42:53+00:00

Add testsuites for kfunc bpf_strncasecmp. Signed-off-by: Yuzuki Ishiyama Acked-by: Viktor Malik Link: https://lore.kernel.org/r/20260121033328.1850010-3-ishiyama@hpc.is.uec.ac.jp Signed-off-by: Alexei Starovoitov

selftests/bpf: Test bpf_strcasestr,bpf_strncasestr kfuncs

2025-10-10T17:05:32+00:00

Add tests for new kfuncs bpf_strcasestr() and bpf_strncasestr(). Signed-off-by: Rong Tao Link: https://lore.kernel.org/r/tencent_4F1A340A8966155C52AA9CBDB68FD221FE0A@qq.com Signed-off-by: Alexei Starovoitov

selftests/bpf: Test kfunc bpf_strcasecmp

2025-09-04T16:00:57+00:00

Add testsuites for kfunc bpf_strcasecmp. Signed-off-by: Rong Tao Link: https://lore.kernel.org/r/tencent_81A1A0ACC04B68158C57C4D151C46A832B07@qq.com Signed-off-by: Alexei Starovoitov

selftests/bpf: Add tests for string kfuncs

2025-06-26T16:44:46+00:00

Add both positive and negative tests cases using string kfuncs added in the previous patches. Positive tests check that the functions work as expected. Negative tests pass various incorrect strings to the kfuncs and check for the expected error codes: -E2BIG when passing too long strings -EFAULT when trying to read inaccessible kernel memory -ERANGE when passing userspace pointers on arches with non-overlapping address spaces A majority of the tests use the RUN_TESTS helper which executes BPF programs with BPF_PROG_TEST_RUN and check for the expected return value. An exception to this are tests for long strings as we need to memset the long string from userspace (at least I haven't found an ergonomic way to memset it from a BPF program), which cannot be done using the RUN_TESTS infrastructure. Suggested-by: Eduard Zingerman Signed-off-by: Viktor Malik Link: https://lore.kernel.org/r/090451a2e60c9ae1dceb4d1bfafa3479db5c7481.1750917800.git.vmalik@redhat.com Signed-off-by: Alexei Starovoitov