Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel os linux

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>

authored by

Yonghong Song and committed by
Alexei Starovoitov
3b532518 2b730145

+37
+36
tools/testing/selftests/bpf/prog_tests/btf.c
··· 4052 4052 .btf_load_err = true, 4053 4053 .err_str = "Type tags don't precede modifiers", 4054 4054 }, 4055 + { 4056 + .descr = "enum64 test #1, unsigned, size 8", 4057 + .raw_types = { 4058 + BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4), /* [1] */ 4059 + BTF_TYPE_ENC(NAME_TBD, BTF_INFO_ENC(BTF_KIND_ENUM64, 0, 2), 8), /* [2] */ 4060 + BTF_ENUM64_ENC(NAME_TBD, 0, 0), 4061 + BTF_ENUM64_ENC(NAME_TBD, 1, 1), 4062 + BTF_END_RAW, 4063 + }, 4064 + BTF_STR_SEC("\0a\0b\0c"), 4065 + .map_type = BPF_MAP_TYPE_ARRAY, 4066 + .map_name = "tag_type_check_btf", 4067 + .key_size = sizeof(int), 4068 + .value_size = 8, 4069 + .key_type_id = 1, 4070 + .value_type_id = 2, 4071 + .max_entries = 1, 4072 + }, 4073 + { 4074 + .descr = "enum64 test #2, signed, size 4", 4075 + .raw_types = { 4076 + BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4), /* [1] */ 4077 + BTF_TYPE_ENC(NAME_TBD, BTF_INFO_ENC(BTF_KIND_ENUM64, 1, 2), 4), /* [2] */ 4078 + BTF_ENUM64_ENC(NAME_TBD, -1, 0), 4079 + BTF_ENUM64_ENC(NAME_TBD, 1, 0), 4080 + BTF_END_RAW, 4081 + }, 4082 + BTF_STR_SEC("\0a\0b\0c"), 4083 + .map_type = BPF_MAP_TYPE_ARRAY, 4084 + .map_name = "tag_type_check_btf", 4085 + .key_size = sizeof(int), 4086 + .value_size = 4, 4087 + .key_type_id = 1, 4088 + .value_type_id = 2, 4089 + .max_entries = 1, 4090 + }, 4055 4091 4056 4092 }; /* struct btf_raw_test raw_tests[] */ 4057 4093
+1
tools/testing/selftests/bpf/test_btf.h
··· 39 39 #define BTF_MEMBER_ENC(name, type, bits_offset) \ 40 40 (name), (type), (bits_offset) 41 41 #define BTF_ENUM_ENC(name, val) (name), (val) 42 + #define BTF_ENUM64_ENC(name, val_lo32, val_hi32) (name), (val_lo32), (val_hi32) 42 43 #define BTF_MEMBER_OFFSET(bitfield_size, bits_offset) \ 43 44 ((bitfield_size) << 24 | (bits_offset)) 44 45