Commit 3b532518 authored by Yonghong Song's avatar Yonghong Song Committed by Alexei Starovoitov
Browse files

selftests/bpf: Add BTF_KIND_ENUM64 unit tests 



Add unit tests for basic BTF_KIND_ENUM64 encoding.

Acked-by: default avatarAndrii Nakryiko <andrii@kernel.org>
Signed-off-by: default avatarYonghong Song <yhs@fb.com>
Link: https://lore.kernel.org/r/20220607062708.3724845-1-yhs@fb.com


Signed-off-by: default avatarAlexei Starovoitov <ast@kernel.org>
parent 2b730145

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

+36 −0
Original line number Diff line number Diff line
@@ -4052,6 +4052,42 @@ static struct btf_raw_test raw_tests[] = { 
	.btf_load_err = true,

	.err_str = "Type tags don't precede modifiers",

},

{

	.descr = "enum64 test #1, unsigned, size 8",

	.raw_types = {

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

		BTF_TYPE_ENC(NAME_TBD, BTF_INFO_ENC(BTF_KIND_ENUM64, 0, 2), 8),	/* [2] */

		BTF_ENUM64_ENC(NAME_TBD, 0, 0),

		BTF_ENUM64_ENC(NAME_TBD, 1, 1),

		BTF_END_RAW,

	},

	BTF_STR_SEC("\0a\0b\0c"),

	.map_type = BPF_MAP_TYPE_ARRAY,

	.map_name = "tag_type_check_btf",

	.key_size = sizeof(int),

	.value_size = 8,

	.key_type_id = 1,

	.value_type_id = 2,

	.max_entries = 1,

},

{

	.descr = "enum64 test #2, signed, size 4",

	.raw_types = {

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

		BTF_TYPE_ENC(NAME_TBD, BTF_INFO_ENC(BTF_KIND_ENUM64, 1, 2), 4),	/* [2] */

		BTF_ENUM64_ENC(NAME_TBD, -1, 0),

		BTF_ENUM64_ENC(NAME_TBD, 1, 0),

		BTF_END_RAW,

	},

	BTF_STR_SEC("\0a\0b\0c"),

	.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 = 2,

	.max_entries = 1,

},



}; /* struct btf_raw_test raw_tests[] */

tools/testing/selftests/bpf/test_btf.h

+1 −0
Original line number Diff line number Diff line
@@ -39,6 +39,7 @@ 
#define BTF_MEMBER_ENC(name, type, bits_offset)	\

	(name), (type), (bits_offset)

#define BTF_ENUM_ENC(name, val) (name), (val)

#define BTF_ENUM64_ENC(name, val_lo32, val_hi32) (name), (val_lo32), (val_hi32)

#define BTF_MEMBER_OFFSET(bitfield_size, bits_offset) \

	((bitfield_size) << 24 | (bits_offset))