diff options
| author | David Vernet <void@manifault.com> | 2023-01-25 10:47:35 -0600 |
|---|---|---|
| committer | Alexei Starovoitov <ast@kernel.org> | 2023-01-25 10:25:57 -0800 |
| commit | 7dd880592a88799f3ef48fda507849a75f11cbf0 (patch) | |
| tree | 86fdb6a4bd97f6de4ff32ddfc2ca8d83fa9666d6 /net/bpf | |
| parent | 51a52a29ebaa8395de090fa415c6e1b2899a50f1 (diff) | |
bpf/selftests: Verify struct_ops prog sleepable behavior
In a set of prior changes, we added the ability for struct_ops programs
to be sleepable. This patch enhances the dummy_st_ops selftest suite to
validate this behavior by adding a new sleepable struct_ops entry to
dummy_st_ops.
Signed-off-by: David Vernet <void@manifault.com>
Link: https://lore.kernel.org/r/20230125164735.785732-5-void@manifault.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Diffstat (limited to 'net/bpf')
| -rw-r--r-- | net/bpf/bpf_dummy_struct_ops.c | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/net/bpf/bpf_dummy_struct_ops.c b/net/bpf/bpf_dummy_struct_ops.c index 1ac4467928a9..ff4f89a2b02a 100644 --- a/net/bpf/bpf_dummy_struct_ops.c +++ b/net/bpf/bpf_dummy_struct_ops.c @@ -154,6 +154,23 @@ static bool bpf_dummy_ops_is_valid_access(int off, int size, return bpf_tracing_btf_ctx_access(off, size, type, prog, info); } +static int bpf_dummy_ops_check_member(const struct btf_type *t, + const struct btf_member *member, + const struct bpf_prog *prog) +{ + u32 moff = __btf_member_bit_offset(t, member) / 8; + + switch (moff) { + case offsetof(struct bpf_dummy_ops, test_sleepable): + break; + default: + if (prog->aux->sleepable) + return -EINVAL; + } + + return 0; +} + static int bpf_dummy_ops_btf_struct_access(struct bpf_verifier_log *log, const struct bpf_reg_state *reg, int off, int size, enum bpf_access_type atype, @@ -208,6 +225,7 @@ static void bpf_dummy_unreg(void *kdata) struct bpf_struct_ops bpf_bpf_dummy_ops = { .verifier_ops = &bpf_dummy_verifier_ops, .init = bpf_dummy_init, + .check_member = bpf_dummy_ops_check_member, .init_member = bpf_dummy_init_member, .reg = bpf_dummy_reg, .unreg = bpf_dummy_unreg, |