diff options
author | Yonghong Song <yhs@fb.com> | 2021-11-12 04:26:25 +0300 |
---|---|---|
committer | Alexei Starovoitov <ast@kernel.org> | 2021-11-12 04:41:11 +0300 |
commit | 0dc85872203bf7b15c56c7eb228b8f3fabb17ac2 (patch) | |
tree | 75db0fc12541d122df710b791c704925ed29736a /tools | |
parent | 3da5ba6f0509ace03cad38b554c89797129e90be (diff) | |
download | linux-0dc85872203bf7b15c56c7eb228b8f3fabb17ac2.tar.xz |
selftests/bpf: Test libbpf API function btf__add_type_tag()
Add unit tests for btf__add_type_tag().
Signed-off-by: Yonghong Song <yhs@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20211112012625.1505748-1-yhs@fb.com
Diffstat (limited to 'tools')
-rw-r--r-- | tools/testing/selftests/bpf/btf_helpers.c | 4 | ||||
-rw-r--r-- | tools/testing/selftests/bpf/prog_tests/btf_write.c | 67 |
2 files changed, 43 insertions, 28 deletions
diff --git a/tools/testing/selftests/bpf/btf_helpers.c b/tools/testing/selftests/bpf/btf_helpers.c index acb59202486d..b5941d514e17 100644 --- a/tools/testing/selftests/bpf/btf_helpers.c +++ b/tools/testing/selftests/bpf/btf_helpers.c @@ -25,11 +25,12 @@ static const char * const btf_kind_str_mapping[] = { [BTF_KIND_DATASEC] = "DATASEC", [BTF_KIND_FLOAT] = "FLOAT", [BTF_KIND_DECL_TAG] = "DECL_TAG", + [BTF_KIND_TYPE_TAG] = "TYPE_TAG", }; static const char *btf_kind_str(__u16 kind) { - if (kind > BTF_KIND_DECL_TAG) + if (kind > BTF_KIND_TYPE_TAG) return "UNKNOWN"; return btf_kind_str_mapping[kind]; } @@ -109,6 +110,7 @@ int fprintf_btf_type_raw(FILE *out, const struct btf *btf, __u32 id) case BTF_KIND_VOLATILE: case BTF_KIND_RESTRICT: case BTF_KIND_TYPEDEF: + case BTF_KIND_TYPE_TAG: fprintf(out, " type_id=%u", t->type); break; case BTF_KIND_ARRAY: { diff --git a/tools/testing/selftests/bpf/prog_tests/btf_write.c b/tools/testing/selftests/bpf/prog_tests/btf_write.c index b912eeb0b6b4..addf99c05896 100644 --- a/tools/testing/selftests/bpf/prog_tests/btf_write.c +++ b/tools/testing/selftests/bpf/prog_tests/btf_write.c @@ -297,6 +297,16 @@ static void gen_btf(struct btf *btf) ASSERT_EQ(btf_decl_tag(t)->component_idx, 1, "tag_component_idx"); ASSERT_STREQ(btf_type_raw_dump(btf, 19), "[19] DECL_TAG 'tag2' type_id=14 component_idx=1", "raw_dump"); + + /* TYPE_TAG */ + id = btf__add_type_tag(btf, "tag1", 1); + ASSERT_EQ(id, 20, "tag_id"); + t = btf__type_by_id(btf, 20); + ASSERT_STREQ(btf__str_by_offset(btf, t->name_off), "tag1", "tag_value"); + ASSERT_EQ(btf_kind(t), BTF_KIND_TYPE_TAG, "tag_kind"); + ASSERT_EQ(t->type, 1, "tag_type"); + ASSERT_STREQ(btf_type_raw_dump(btf, 20), + "[20] TYPE_TAG 'tag1' type_id=1", "raw_dump"); } static void test_btf_add() @@ -337,7 +347,8 @@ static void test_btf_add() "[17] DATASEC 'datasec1' size=12 vlen=1\n" "\ttype_id=1 offset=4 size=8", "[18] DECL_TAG 'tag1' type_id=16 component_idx=-1", - "[19] DECL_TAG 'tag2' type_id=14 component_idx=1"); + "[19] DECL_TAG 'tag2' type_id=14 component_idx=1", + "[20] TYPE_TAG 'tag1' type_id=1"); btf__free(btf); } @@ -359,7 +370,7 @@ static void test_btf_add_btf() gen_btf(btf2); id = btf__add_btf(btf1, btf2); - if (!ASSERT_EQ(id, 20, "id")) + if (!ASSERT_EQ(id, 21, "id")) goto cleanup; VALIDATE_RAW_BTF( @@ -391,35 +402,37 @@ static void test_btf_add_btf() "\ttype_id=1 offset=4 size=8", "[18] DECL_TAG 'tag1' type_id=16 component_idx=-1", "[19] DECL_TAG 'tag2' type_id=14 component_idx=1", + "[20] TYPE_TAG 'tag1' type_id=1", /* types appended from the second BTF */ - "[20] INT 'int' size=4 bits_offset=0 nr_bits=32 encoding=SIGNED", - "[21] PTR '(anon)' type_id=20", - "[22] CONST '(anon)' type_id=24", - "[23] VOLATILE '(anon)' type_id=22", - "[24] RESTRICT '(anon)' type_id=23", - "[25] ARRAY '(anon)' type_id=21 index_type_id=20 nr_elems=10", - "[26] STRUCT 's1' size=8 vlen=2\n" - "\t'f1' type_id=20 bits_offset=0\n" - "\t'f2' type_id=20 bits_offset=32 bitfield_size=16", - "[27] UNION 'u1' size=8 vlen=1\n" - "\t'f1' type_id=20 bits_offset=0 bitfield_size=16", - "[28] ENUM 'e1' size=4 vlen=2\n" + "[21] INT 'int' size=4 bits_offset=0 nr_bits=32 encoding=SIGNED", + "[22] PTR '(anon)' type_id=21", + "[23] CONST '(anon)' type_id=25", + "[24] VOLATILE '(anon)' type_id=23", + "[25] RESTRICT '(anon)' type_id=24", + "[26] ARRAY '(anon)' type_id=22 index_type_id=21 nr_elems=10", + "[27] STRUCT 's1' size=8 vlen=2\n" + "\t'f1' type_id=21 bits_offset=0\n" + "\t'f2' type_id=21 bits_offset=32 bitfield_size=16", + "[28] UNION 'u1' size=8 vlen=1\n" + "\t'f1' type_id=21 bits_offset=0 bitfield_size=16", + "[29] ENUM 'e1' size=4 vlen=2\n" "\t'v1' val=1\n" "\t'v2' val=2", - "[29] FWD 'struct_fwd' fwd_kind=struct", - "[30] FWD 'union_fwd' fwd_kind=union", - "[31] ENUM 'enum_fwd' size=4 vlen=0", - "[32] TYPEDEF 'typedef1' type_id=20", - "[33] FUNC 'func1' type_id=34 linkage=global", - "[34] FUNC_PROTO '(anon)' ret_type_id=20 vlen=2\n" - "\t'p1' type_id=20\n" - "\t'p2' type_id=21", - "[35] VAR 'var1' type_id=20, linkage=global-alloc", - "[36] DATASEC 'datasec1' size=12 vlen=1\n" - "\ttype_id=20 offset=4 size=8", - "[37] DECL_TAG 'tag1' type_id=35 component_idx=-1", - "[38] DECL_TAG 'tag2' type_id=33 component_idx=1"); + "[30] FWD 'struct_fwd' fwd_kind=struct", + "[31] FWD 'union_fwd' fwd_kind=union", + "[32] ENUM 'enum_fwd' size=4 vlen=0", + "[33] TYPEDEF 'typedef1' type_id=21", + "[34] FUNC 'func1' type_id=35 linkage=global", + "[35] FUNC_PROTO '(anon)' ret_type_id=21 vlen=2\n" + "\t'p1' type_id=21\n" + "\t'p2' type_id=22", + "[36] VAR 'var1' type_id=21, linkage=global-alloc", + "[37] DATASEC 'datasec1' size=12 vlen=1\n" + "\ttype_id=21 offset=4 size=8", + "[38] DECL_TAG 'tag1' type_id=36 component_idx=-1", + "[39] DECL_TAG 'tag2' type_id=34 component_idx=1", + "[40] TYPE_TAG 'tag1' type_id=21"); cleanup: btf__free(btf1); |