From 846f4826d18e660ab668eb26e83c6adf0ceb24d2 Mon Sep 17 00:00:00 2001 From: Yonghong Song Date: Thu, 11 Nov 2021 17:26:35 -0800 Subject: [PATCH] selftests/bpf: Test BTF_KIND_DECL_TAG for deduplication Add BTF_KIND_TYPE_TAG duplication unit tests. Signed-off-by: Yonghong Song Signed-off-by: Alexei Starovoitov Link: https://lore.kernel.org/bpf/20211112012635.1506853-1-yhs@fb.com --- tools/testing/selftests/bpf/prog_tests/btf.c | 139 ++++++++++++++++++++++++++- 1 file changed, 135 insertions(+), 4 deletions(-) diff --git a/tools/testing/selftests/bpf/prog_tests/btf.c b/tools/testing/selftests/bpf/prog_tests/btf.c index 88510a2..4aa6343 100644 --- a/tools/testing/selftests/bpf/prog_tests/btf.c +++ b/tools/testing/selftests/bpf/prog_tests/btf.c @@ -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"), + }, +}, }; -- 2.7.4