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selftests/bpf: add CO-RE relocs ints tests

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Add various tests validating handling compatible/incompatible integer
types.

Signed-off-by: Andrii Nakryiko <andriin@fb.com>
Acked-by: Song Liu <songliubraving@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
This commit is contained in:
Andrii Nakryiko
2019-08-07 14:40:00 -07:00
committed by Alexei Starovoitov
parent d698f9dbdb
commit c1f5e7dd19
11 changed files with 209 additions and 0 deletions
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40
tools/testing/selftests/bpf/prog_tests/core_reloc.c
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@@ -145,6 +145,35 @@
.output_len = sizeof(struct core_reloc_ptr_as_arr), \
}
#define INTS_DATA(struct_name) STRUCT_TO_CHAR_PTR(struct_name) { \
.u8_field = 1, \
.s8_field = 2, \
.u16_field = 3, \
.s16_field = 4, \
.u32_field = 5, \
.s32_field = 6, \
.u64_field = 7, \
.s64_field = 8, \
}
#define INTS_CASE_COMMON(name) \
.case_name = #name, \
.bpf_obj_file = "test_core_reloc_ints.o", \
.btf_src_file = "btf__core_reloc_" #name ".o"
#define INTS_CASE(name) { \
INTS_CASE_COMMON(name), \
.input = INTS_DATA(core_reloc_##name), \
.input_len = sizeof(struct core_reloc_##name), \
.output = INTS_DATA(core_reloc_ints), \
.output_len = sizeof(struct core_reloc_ints), \
}
#define INTS_ERR_CASE(name) { \
INTS_CASE_COMMON(name), \
.fails = true, \
}
struct core_reloc_test_case {
const char *case_name;
const char *bpf_obj_file;
@@ -220,6 +249,17 @@ static struct core_reloc_test_case test_cases[] = {
/* handling "ptr is an array" semantics */
PTR_AS_ARR_CASE(ptr_as_arr),
PTR_AS_ARR_CASE(ptr_as_arr___diff_sz),
/* int signedness/sizing/bitfield handling */
INTS_CASE(ints),
INTS_CASE(ints___bool),
INTS_CASE(ints___reverse_sign),
INTS_ERR_CASE(ints___err_bitfield),
INTS_ERR_CASE(ints___err_wrong_sz_8),
INTS_ERR_CASE(ints___err_wrong_sz_16),
INTS_ERR_CASE(ints___err_wrong_sz_32),
INTS_ERR_CASE(ints___err_wrong_sz_64),
};
struct data {