diff options
author | Andrii Nakryiko <andriin@fb.com> | 2019-10-15 11:28:49 -0700 |
---|---|---|
committer | Alexei Starovoitov <ast@kernel.org> | 2019-10-15 16:06:05 -0700 |
commit | c7566a69695cd3d8fe876c0da38a03a7472d3f56 (patch) | |
tree | 87cf6a2540dbbb1bca6286de1e1c5c06b65f650f /tools/testing/selftests/bpf/prog_tests | |
parent | libbpf: Add BPF-side definitions of supported field relocation kinds (diff) | |
download | linux-dev-c7566a69695cd3d8fe876c0da38a03a7472d3f56.tar.xz linux-dev-c7566a69695cd3d8fe876c0da38a03a7472d3f56.zip |
selftests/bpf: Add field existence CO-RE relocs tests
Add a bunch of tests validating CO-RE is handling field existence
relocation. Relaxed CO-RE relocation mode is activated for these new
tests to prevent libbpf from rejecting BPF object for no-match
relocation, even though test BPF program is not going to use that
relocation, if field is missing.
Signed-off-by: Andrii Nakryiko <andriin@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Link: https://lore.kernel.org/bpf/20191015182849.3922287-6-andriin@fb.com
Diffstat (limited to 'tools/testing/selftests/bpf/prog_tests')
-rw-r--r-- | tools/testing/selftests/bpf/prog_tests/core_reloc.c | 76 |
1 files changed, 74 insertions, 2 deletions
diff --git a/tools/testing/selftests/bpf/prog_tests/core_reloc.c b/tools/testing/selftests/bpf/prog_tests/core_reloc.c index 21a0dff66241..7e2f5b4bf7f3 100644 --- a/tools/testing/selftests/bpf/prog_tests/core_reloc.c +++ b/tools/testing/selftests/bpf/prog_tests/core_reloc.c @@ -174,6 +174,21 @@ .fails = true, \ } +#define EXISTENCE_DATA(struct_name) STRUCT_TO_CHAR_PTR(struct_name) { \ + .a = 42, \ +} + +#define EXISTENCE_CASE_COMMON(name) \ + .case_name = #name, \ + .bpf_obj_file = "test_core_reloc_existence.o", \ + .btf_src_file = "btf__core_reloc_" #name ".o", \ + .relaxed_core_relocs = true \ + +#define EXISTENCE_ERR_CASE(name) { \ + EXISTENCE_CASE_COMMON(name), \ + .fails = true, \ +} + struct core_reloc_test_case { const char *case_name; const char *bpf_obj_file; @@ -183,6 +198,7 @@ struct core_reloc_test_case { const char *output; int output_len; bool fails; + bool relaxed_core_relocs; }; static struct core_reloc_test_case test_cases[] = { @@ -283,6 +299,59 @@ static struct core_reloc_test_case test_cases[] = { }, .output_len = sizeof(struct core_reloc_misc_output), }, + + /* validate field existence checks */ + { + EXISTENCE_CASE_COMMON(existence), + .input = STRUCT_TO_CHAR_PTR(core_reloc_existence) { + .a = 1, + .b = 2, + .c = 3, + .arr = { 4 }, + .s = { .x = 5 }, + }, + .input_len = sizeof(struct core_reloc_existence), + .output = STRUCT_TO_CHAR_PTR(core_reloc_existence_output) { + .a_exists = 1, + .b_exists = 1, + .c_exists = 1, + .arr_exists = 1, + .s_exists = 1, + .a_value = 1, + .b_value = 2, + .c_value = 3, + .arr_value = 4, + .s_value = 5, + }, + .output_len = sizeof(struct core_reloc_existence_output), + }, + { + EXISTENCE_CASE_COMMON(existence___minimal), + .input = STRUCT_TO_CHAR_PTR(core_reloc_existence___minimal) { + .a = 42, + }, + .input_len = sizeof(struct core_reloc_existence), + .output = STRUCT_TO_CHAR_PTR(core_reloc_existence_output) { + .a_exists = 1, + .b_exists = 0, + .c_exists = 0, + .arr_exists = 0, + .s_exists = 0, + .a_value = 42, + .b_value = 0xff000002u, + .c_value = 0xff000003u, + .arr_value = 0xff000004u, + .s_value = 0xff000005u, + }, + .output_len = sizeof(struct core_reloc_existence_output), + }, + + EXISTENCE_ERR_CASE(existence__err_int_sz), + EXISTENCE_ERR_CASE(existence__err_int_type), + EXISTENCE_ERR_CASE(existence__err_int_kind), + EXISTENCE_ERR_CASE(existence__err_arr_kind), + EXISTENCE_ERR_CASE(existence__err_arr_value_type), + EXISTENCE_ERR_CASE(existence__err_struct_type), }; struct data { @@ -305,11 +374,14 @@ void test_core_reloc(void) for (i = 0; i < ARRAY_SIZE(test_cases); i++) { test_case = &test_cases[i]; - if (!test__start_subtest(test_case->case_name)) continue; - obj = bpf_object__open(test_case->bpf_obj_file); + LIBBPF_OPTS(bpf_object_open_opts, opts, + .relaxed_core_relocs = test_case->relaxed_core_relocs, + ); + + obj = bpf_object__open_file(test_case->bpf_obj_file, &opts); if (CHECK(IS_ERR_OR_NULL(obj), "obj_open", "failed to open '%s': %ld\n", test_case->bpf_obj_file, PTR_ERR(obj))) |