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| author | Andrii Nakryiko <andrii@kernel.org> | 2024-04-28 05:09:54 +0200 |
|---|---|---|
| committer | Martin KaFai Lau <martin.lau@kernel.org> | 2024-04-30 01:48:33 +0200 |
| commit | 1bba3b3d373dbafae891e7cb06b8c82c8d62aba1 (patch) | |
| tree | a0dbfaaf0e1970a93b7b2536632329019a219d49 /tools/testing/selftests/bpf/progs/struct_ops_module.c | |
| parent | libbpf: handle nulled-out program in struct_ops correctly (diff) | |
| download | linux-1bba3b3d373dbafae891e7cb06b8c82c8d62aba1.tar.xz linux-1bba3b3d373dbafae891e7cb06b8c82c8d62aba1.zip | |
selftests/bpf: validate nulled-out struct_ops program is handled properly
Add a selftests validating that it's possible to have some struct_ops
callback set declaratively, then disable it (by setting to NULL)
programmatically. Libbpf should detect that such program should
not be loaded. Otherwise, it will unnecessarily fail the loading
when the host kernel does not have the type information.
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/r/20240428030954.3918764-2-andrii@kernel.org
Signed-off-by: Martin KaFai Lau <martin.lau@kernel.org>
Diffstat (limited to 'tools/testing/selftests/bpf/progs/struct_ops_module.c')
| -rw-r--r-- | tools/testing/selftests/bpf/progs/struct_ops_module.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/tools/testing/selftests/bpf/progs/struct_ops_module.c b/tools/testing/selftests/bpf/progs/struct_ops_module.c index 63b065dae002..40109be2b3ae 100644 --- a/tools/testing/selftests/bpf/progs/struct_ops_module.c +++ b/tools/testing/selftests/bpf/progs/struct_ops_module.c @@ -63,10 +63,17 @@ struct bpf_testmod_ops___zeroed { int zeroed; }; +SEC("?struct_ops/test_3") +int BPF_PROG(zeroed_op) +{ + return 1; +} + SEC(".struct_ops.link") struct bpf_testmod_ops___zeroed testmod_zeroed = { .test_1 = (void *)test_1, .test_2 = (void *)test_2_v2, + .zeroed_op = (void *)zeroed_op, }; struct bpf_testmod_ops___incompatible { |