Commit 6aa5dabc authored by Yonghong Song's avatar Yonghong Song Committed by Alexei Starovoitov
Browse files

selftests/bpf: Add BTF_KIND_TYPE_TAG unit tests 



Add BTF_KIND_TYPE_TAG unit tests.

Signed-off-by: default avatarYonghong Song <yhs@fb.com>
Signed-off-by: default avatarAlexei Starovoitov <ast@kernel.org>
Acked-by: default avatarAndrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20211112012630.1506095-1-yhs@fb.com
parent 0dc85872

tools/testing/selftests/bpf/prog_tests/btf.c

+18 −0
Original line number Diff line number Diff line
@@ -3939,6 +3939,23 @@ static struct btf_raw_test raw_tests[] = { 
	.btf_load_err = true,

	.err_str = "Invalid component_idx",

},

{

	.descr = "type_tag test #1",

	.raw_types = {

		BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),	/* [1] */

		BTF_TYPE_TAG_ENC(NAME_TBD, 1),			/* [2] */

		BTF_PTR_ENC(2),					/* [3] */

		BTF_END_RAW,

	},

	BTF_STR_SEC("\0tag"),

	.map_type = BPF_MAP_TYPE_ARRAY,

	.map_name = "tag_type_check_btf",

	.key_size = sizeof(int),

	.value_size = 4,

	.key_type_id = 1,

	.value_type_id = 1,

	.max_entries = 1,

},



}; /* struct btf_raw_test raw_tests[] */
@@ -7222,6 +7239,7 @@ static int btf_type_size(const struct btf_type *t) 
	case BTF_KIND_TYPEDEF:

	case BTF_KIND_FUNC:

	case BTF_KIND_FLOAT:

	case BTF_KIND_TYPE_TAG:

		return base_size;

	case BTF_KIND_INT:

		return base_size + sizeof(__u32);

tools/testing/selftests/bpf/test_btf.h

+3 −0
Original line number Diff line number Diff line
@@ -72,4 +72,7 @@ 
#define BTF_DECL_TAG_ENC(value, type, component_idx)	\

	BTF_TYPE_ENC(value, BTF_INFO_ENC(BTF_KIND_DECL_TAG, 0, 0), type), (component_idx)



#define BTF_TYPE_TAG_ENC(value, type)	\

	BTF_TYPE_ENC(value, BTF_INFO_ENC(BTF_KIND_TYPE_TAG, 0, 0), type)



#endif /* _TEST_BTF_H */