Commit 846f4826 authored by Yonghong Song's avatar Yonghong Song Committed by Alexei Starovoitov
Browse files

selftests/bpf: Test BTF_KIND_DECL_TAG for deduplication 



Add BTF_KIND_TYPE_TAG duplication unit tests.

Signed-off-by: default avatarYonghong Song <yhs@fb.com>
Signed-off-by: default avatarAlexei Starovoitov <ast@kernel.org>
Link: https://lore.kernel.org/bpf/20211112012635.1506853-1-yhs@fb.com
parent 6aa5dabc

tools/testing/selftests/bpf/prog_tests/btf.c

+135 −4
Original line number Diff line number Diff line
@@ -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"),

	},

},



};