bpf_map__btf_key_type_id
LIBBPF_API __u32 bpf_map__btf_key_type_id(const struct bpf_map *map);
create_opts.btf_key_type_id = bpf_map__btf_key_type_id(inner_map);
err = (bpf_map__btf_key_type_id(map) == 0 || bpf_map__btf_value_type_id(map) == 0)
bpf_map__btf_key_type_id(map), bpf_map__btf_value_type_id(map),
!ASSERT_EQ(bpf_map__btf_key_type_id(map), 0, ".data.custom clear btf key") ||
!ASSERT_EQ(bpf_map__btf_key_type_id(map), 0, ".data.non_array clear btf key") ||
!ASSERT_EQ(bpf_map__btf_key_type_id(map), 0, ".data.array_not_last clear btf key") ||
create_attr.btf_key_type_id = bpf_map__btf_key_type_id(map);