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selftests/bpf: Test BTF_KIND_DECL_TAG for deduplication 

Add BTF_KIND_TYPE_TAG duplication unit tests.

Signed-off-by: Yonghong Song <yhs@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Link: https://lore.kernel.org/bpf/20211112012635.1506853-1-yhs@fb.com
This commit is contained in:
Yonghong Song 2021-11-11 17:26:35 -08:00 committed by Alexei Starovoitov
parent 6aa5dabc9d
commit 846f4826d1
1 changed files with 135 additions and 4 deletions
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139
tools/testing/selftests/bpf/prog_tests/btf.c
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@ -6878,15 +6878,16 @@ static struct btf_dedup_test dedup_tests[] = {
BTF_RESTRICT_ENC(8), /* [11] restrict */
BTF_FUNC_PROTO_ENC(1, 2), /* [12] func_proto */
BTF_FUNC_PROTO_ARG_ENC(NAME_TBD, 1),
BTF_FUNC_PROTO_ARG_ENC(NAME_TBD, 8),
BTF_FUNC_PROTO_ARG_ENC(NAME_TBD, 18),
BTF_FUNC_ENC(NAME_TBD, 12), /* [13] func */
BTF_TYPE_FLOAT_ENC(NAME_TBD, 2), /* [14] float */
BTF_DECL_TAG_ENC(NAME_TBD, 13, -1), /* [15] decl_tag */
BTF_DECL_TAG_ENC(NAME_TBD, 13, 1), /* [16] decl_tag */
BTF_DECL_TAG_ENC(NAME_TBD, 7, -1), /* [17] decl_tag */
BTF_TYPE_TAG_ENC(NAME_TBD, 8), /* [18] type_tag */
BTF_END_RAW,
},
BTF_STR_SEC("\0A\0B\0C\0D\0E\0F\0G\0H\0I\0J\0K\0L\0M\0N\0O\0P\0Q"),
BTF_STR_SEC("\0A\0B\0C\0D\0E\0F\0G\0H\0I\0J\0K\0L\0M\0N\0O\0P\0Q\0R"),
},
.expect = {
.raw_types = {
@ -6907,15 +6908,16 @@ static struct btf_dedup_test dedup_tests[] = {
BTF_RESTRICT_ENC(8), /* [11] restrict */
BTF_FUNC_PROTO_ENC(1, 2), /* [12] func_proto */
BTF_FUNC_PROTO_ARG_ENC(NAME_TBD, 1),
BTF_FUNC_PROTO_ARG_ENC(NAME_TBD, 8),
BTF_FUNC_PROTO_ARG_ENC(NAME_TBD, 18),
BTF_FUNC_ENC(NAME_TBD, 12), /* [13] func */
BTF_TYPE_FLOAT_ENC(NAME_TBD, 2), /* [14] float */
BTF_DECL_TAG_ENC(NAME_TBD, 13, -1), /* [15] decl_tag */
BTF_DECL_TAG_ENC(NAME_TBD, 13, 1), /* [16] decl_tag */
BTF_DECL_TAG_ENC(NAME_TBD, 7, -1), /* [17] decl_tag */
BTF_TYPE_TAG_ENC(NAME_TBD, 8), /* [18] type_tag */
BTF_END_RAW,
},
BTF_STR_SEC("\0A\0B\0C\0D\0E\0F\0G\0H\0I\0J\0K\0L\0M\0N\0O\0P\0Q"),
BTF_STR_SEC("\0A\0B\0C\0D\0E\0F\0G\0H\0I\0J\0K\0L\0M\0N\0O\0P\0Q\0R"),
},
},
{
@ -7221,6 +7223,135 @@ static struct btf_dedup_test dedup_tests[] = {
BTF_STR_SEC("\0t\0tag1\0tag2\0tag3"),
},
},
{
.descr = "dedup: btf_type_tag #1",
.input = {
.raw_types = {
/* ptr -> tag2 -> tag1 -> int */
BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4), /* [1] */
BTF_TYPE_TAG_ENC(NAME_NTH(1), 1), /* [2] */
BTF_TYPE_TAG_ENC(NAME_NTH(2), 2), /* [3] */
BTF_PTR_ENC(3), /* [4] */
/* ptr -> tag2 -> tag1 -> int */
BTF_TYPE_TAG_ENC(NAME_NTH(1), 1), /* [5] */
BTF_TYPE_TAG_ENC(NAME_NTH(2), 5), /* [6] */
BTF_PTR_ENC(6), /* [7] */
/* ptr -> tag1 -> int */
BTF_TYPE_TAG_ENC(NAME_NTH(1), 1), /* [8] */
BTF_PTR_ENC(8), /* [9] */
BTF_END_RAW,
},
BTF_STR_SEC("\0tag1\0tag2"),
},
.expect = {
.raw_types = {
/* ptr -> tag2 -> tag1 -> int */
BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4), /* [1] */
BTF_TYPE_TAG_ENC(NAME_NTH(1), 1), /* [2] */
BTF_TYPE_TAG_ENC(NAME_NTH(2), 2), /* [3] */
BTF_PTR_ENC(3), /* [4] */
/* ptr -> tag1 -> int */
BTF_PTR_ENC(2), /* [5] */
BTF_END_RAW,
},
BTF_STR_SEC("\0tag1\0tag2"),
},
},
{
.descr = "dedup: btf_type_tag #2",
.input = {
.raw_types = {
/* ptr -> tag2 -> tag1 -> int */
BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4), /* [1] */
BTF_TYPE_TAG_ENC(NAME_NTH(1), 1), /* [2] */
BTF_TYPE_TAG_ENC(NAME_NTH(2), 2), /* [3] */
BTF_PTR_ENC(3), /* [4] */
/* ptr -> tag2 -> int */
BTF_TYPE_TAG_ENC(NAME_NTH(2), 1), /* [5] */
BTF_PTR_ENC(5), /* [6] */
BTF_END_RAW,
},
BTF_STR_SEC("\0tag1\0tag2"),
},
.expect = {
.raw_types = {
/* ptr -> tag2 -> tag1 -> int */
BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4), /* [1] */
BTF_TYPE_TAG_ENC(NAME_NTH(1), 1), /* [2] */
BTF_TYPE_TAG_ENC(NAME_NTH(2), 2), /* [3] */
BTF_PTR_ENC(3), /* [4] */
/* ptr -> tag2 -> int */
BTF_TYPE_TAG_ENC(NAME_NTH(2), 1), /* [5] */
BTF_PTR_ENC(5), /* [6] */
BTF_END_RAW,
},
BTF_STR_SEC("\0tag1\0tag2"),
},
},
{
.descr = "dedup: btf_type_tag #3",
.input = {
.raw_types = {
/* ptr -> tag2 -> tag1 -> int */
BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4), /* [1] */
BTF_TYPE_TAG_ENC(NAME_NTH(1), 1), /* [2] */
BTF_TYPE_TAG_ENC(NAME_NTH(2), 2), /* [3] */
BTF_PTR_ENC(3), /* [4] */
/* ptr -> tag1 -> tag2 -> int */
BTF_TYPE_TAG_ENC(NAME_NTH(2), 1), /* [5] */
BTF_TYPE_TAG_ENC(NAME_NTH(1), 5), /* [6] */
BTF_PTR_ENC(6), /* [7] */
BTF_END_RAW,
},
BTF_STR_SEC("\0tag1\0tag2"),
},
.expect = {
.raw_types = {
/* ptr -> tag2 -> tag1 -> int */
BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4), /* [1] */
BTF_TYPE_TAG_ENC(NAME_NTH(1), 1), /* [2] */
BTF_TYPE_TAG_ENC(NAME_NTH(2), 2), /* [3] */
BTF_PTR_ENC(3), /* [4] */
/* ptr -> tag1 -> tag2 -> int */
BTF_TYPE_TAG_ENC(NAME_NTH(2), 1), /* [5] */
BTF_TYPE_TAG_ENC(NAME_NTH(1), 5), /* [6] */
BTF_PTR_ENC(6), /* [7] */
BTF_END_RAW,
},
BTF_STR_SEC("\0tag1\0tag2"),
},
},
{
.descr = "dedup: btf_type_tag #4",
.input = {
.raw_types = {
/* ptr -> tag1 -> int */
BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4), /* [1] */
BTF_TYPE_TAG_ENC(NAME_NTH(1), 1), /* [2] */
BTF_PTR_ENC(2), /* [3] */
/* ptr -> tag1 -> long */
BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 64, 8), /* [4] */
BTF_TYPE_TAG_ENC(NAME_NTH(1), 4), /* [5] */
BTF_PTR_ENC(5), /* [6] */
BTF_END_RAW,
},
BTF_STR_SEC("\0tag1"),
},
.expect = {
.raw_types = {
/* ptr -> tag1 -> int */
BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4), /* [1] */
BTF_TYPE_TAG_ENC(NAME_NTH(1), 1), /* [2] */
BTF_PTR_ENC(2), /* [3] */
/* ptr -> tag1 -> long */
BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 64, 8), /* [4] */
BTF_TYPE_TAG_ENC(NAME_NTH(1), 4), /* [5] */
BTF_PTR_ENC(5), /* [6] */
BTF_END_RAW,
},
BTF_STR_SEC("\0tag1"),
},
},
};