diff options
| author | Kui-Feng Lee <thinker.li@gmail.com> | 2024-02-28 22:45:23 -0800 |
|---|---|---|
| committer | Andrii Nakryiko <andrii@kernel.org> | 2024-02-29 14:23:53 -0800 |
| commit | 0623e73317940d052216fb6eef4efd55a0a7f602 (patch) | |
| tree | 524cfad5f7755ea83210ec355b43fa650219b237 /tools/testing/selftests/bpf/bpf_testmod/bpf_testmod.h | |
| parent | f2e81192e07e87897ff1296c96775eceea8f582a (diff) | |
selftests/bpf: Test if shadow types work correctly.
Change the values of fields, including scalar types and function pointers,
and check if the struct_ops map works as expected.
The test changes the field "test_2" of "testmod_1" from the pointer to
test_2() to pointer to test_3() and the field "data" to 13. The function
test_2() and test_3() both compute a new value for "test_2_result", but in
different way. By checking the value of "test_2_result", it ensures the
struct_ops map works as expected with changes through shadow types.
Signed-off-by: Kui-Feng Lee <thinker.li@gmail.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20240229064523.2091270-6-thinker.li@gmail.com
Diffstat (limited to 'tools/testing/selftests/bpf/bpf_testmod/bpf_testmod.h')
| -rw-r--r-- | tools/testing/selftests/bpf/bpf_testmod/bpf_testmod.h | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/tools/testing/selftests/bpf/bpf_testmod/bpf_testmod.h b/tools/testing/selftests/bpf/bpf_testmod/bpf_testmod.h index c3b0cf788f9f..971458acfac3 100644 --- a/tools/testing/selftests/bpf/bpf_testmod/bpf_testmod.h +++ b/tools/testing/selftests/bpf/bpf_testmod/bpf_testmod.h @@ -35,6 +35,14 @@ struct bpf_testmod_ops { void (*test_2)(int a, int b); /* Used to test nullable arguments. */ int (*test_maybe_null)(int dummy, struct task_struct *task); + + /* The following fields are used to test shadow copies. */ + char onebyte; + struct { + int a; + int b; + } unsupported; + int data; }; #endif /* _BPF_TESTMOD_H */ |