Commit 33574905 authored by Andrii Nakryiko's avatar Andrii Nakryiko Committed by Alexei Starovoitov
Browse files

selftests/bpf: Add tests for ENUMVAL_EXISTS/ENUMVAL_VALUE relocations 



Add tests validating existence and value relocations for enum value-based
relocations. If __builtin_preserve_enum_value() built-in is not supported,
skip tests.

Signed-off-by: default avatarAndrii Nakryiko <andriin@fb.com>
Signed-off-by: default avatarAlexei Starovoitov <ast@kernel.org>
Acked-by: default avatarYonghong Song <yhs@fb.com>
Link: https://lore.kernel.org/bpf/20200819194519.3375898-6-andriin@fb.com
parent eacaaed7

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

+56 −0
Original line number Diff line number Diff line
@@ -289,6 +289,23 @@ static int duration = 0; 
	.fails = true,							\

}



#define ENUMVAL_CASE_COMMON(name)					\

	.case_name = #name,						\

	.bpf_obj_file = "test_core_reloc_enumval.o",			\

	.btf_src_file = "btf__core_reloc_" #name ".o"			\



#define ENUMVAL_CASE(name, ...) {					\

	ENUMVAL_CASE_COMMON(name),					\

	.output = STRUCT_TO_CHAR_PTR(core_reloc_enumval_output)		\

			__VA_ARGS__,					\

	.output_len = sizeof(struct core_reloc_enumval_output),		\

}



#define ENUMVAL_ERR_CASE(name) {					\

	ENUMVAL_CASE_COMMON(name),					\

	.fails = true,							\

}



struct core_reloc_test_case;



typedef int (*setup_test_fn)(struct core_reloc_test_case *test);
@@ -686,6 +703,45 @@ static struct core_reloc_test_case test_cases[] = { 
	/* BTF_TYPE_ID_LOCAL/BTF_TYPE_ID_TARGET tests */

	TYPE_ID_CASE(type_id, setup_type_id_case_success),

	TYPE_ID_CASE(type_id___missing_targets, setup_type_id_case_failure),



	/* Enumerator value existence and value relocations */

	ENUMVAL_CASE(enumval, {

		.named_val1_exists = true,

		.named_val2_exists = true,

		.named_val3_exists = true,

		.anon_val1_exists = true,

		.anon_val2_exists = true,

		.anon_val3_exists = true,

		.named_val1 = 1,

		.named_val2 = 2,

		.anon_val1 = 0x10,

		.anon_val2 = 0x20,

	}),

	ENUMVAL_CASE(enumval___diff, {

		.named_val1_exists = true,

		.named_val2_exists = true,

		.named_val3_exists = true,

		.anon_val1_exists = true,

		.anon_val2_exists = true,

		.anon_val3_exists = true,

		.named_val1 = 101,

		.named_val2 = 202,

		.anon_val1 = 0x11,

		.anon_val2 = 0x22,

	}),

	ENUMVAL_CASE(enumval___val3_missing, {

		.named_val1_exists = true,

		.named_val2_exists = true,

		.named_val3_exists = false,

		.anon_val1_exists = true,

		.anon_val2_exists = true,

		.anon_val3_exists = false,

		.named_val1 = 111,

		.named_val2 = 222,

		.anon_val1 = 0x111,

		.anon_val2 = 0x222,

	}),

	ENUMVAL_ERR_CASE(enumval___err_missing),

};



struct data {

tools/testing/selftests/bpf/progs/btf__core_reloc_enumval.c

0 → 100644
+3 −0
Original line number Diff line number Diff line 
#include "core_reloc_types.h"



void f(struct core_reloc_enumval x) {}

tools/testing/selftests/bpf/progs/btf__core_reloc_enumval___diff.c

0 → 100644
+3 −0
Original line number Diff line number Diff line 
#include "core_reloc_types.h"



void f(struct core_reloc_enumval___diff x) {}

tools/testing/selftests/bpf/progs/btf__core_reloc_enumval___err_missing.c

0 → 100644
+3 −0
Original line number Diff line number Diff line 
#include "core_reloc_types.h"



void f(struct core_reloc_enumval___err_missing x) {}

tools/testing/selftests/bpf/progs/btf__core_reloc_enumval___val3_missing.c

0 → 100644
+3 −0
Original line number Diff line number Diff line 
#include "core_reloc_types.h"



void f(struct core_reloc_enumval___val3_missing x) {}

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