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selftests/bpf: Add BTF_KIND_ENUM64 unit tests 

Add unit tests for basic BTF_KIND_ENUM64 encoding.

Acked-by: Andrii Nakryiko <andrii@kernel.org>
Signed-off-by: Yonghong Song <yhs@fb.com>
Link: https://lore.kernel.org/r/20220607062708.3724845-1-yhs@fb.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
This commit is contained in:
Yonghong Song 2022-06-06 23:27:08 -07:00 committed by Alexei Starovoitov
parent 2b7301457f
commit 3b5325186d
2 changed files with 37 additions and 0 deletions
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36
tools/testing/selftests/bpf/prog_tests/btf.c
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@ -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[] */

1
tools/testing/selftests/bpf/test_btf.h
View File

@ -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))