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selftests/bpf: Add testcase where 7th argment is struct

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Add testcase where 7th argument is struct for architectures with 8 argument
registers, and increase the complexity of the struct.

Signed-off-by: Pu Lehui <pulehui@huawei.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Reviewed-by: Björn Töpel <bjorn@rivosinc.com>
Acked-by: Björn Töpel <bjorn@kernel.org>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Link: https://lore.kernel.org/bpf/20240702121944.1091530-4-pulehui@huaweicloud.com
This commit is contained in:
Pu Lehui 2024-07-02 12:19:44 +00:00 committed by Daniel Borkmann
parent 5d52ad3668
commit 9474f72cd6
4 changed files with 69 additions and 0 deletions
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1
tools/testing/selftests/bpf/DENYLIST.aarch64
View file

@ -6,6 +6,7 @@ kprobe_multi_test # needs CONFIG_FPROBE
module_attach # prog 'kprobe_multi': failed to auto-attach: -95
fentry_test/fentry_many_args # fentry_many_args:FAIL:fentry_many_args_attach unexpected error: -524
fexit_test/fexit_many_args # fexit_many_args:FAIL:fexit_many_args_attach unexpected error: -524
tracing_struct/struct_many_args # struct_many_args:FAIL:tracing_struct_many_args__attach unexpected error: -524
fill_link_info/kprobe_multi_link_info # bpf_program__attach_kprobe_multi_opts unexpected error: -95
fill_link_info/kretprobe_multi_link_info # bpf_program__attach_kprobe_multi_opts unexpected error: -95
fill_link_info/kprobe_multi_invalid_ubuff # bpf_program__attach_kprobe_multi_opts unexpected error: -95

19
tools/testing/selftests/bpf/bpf_testmod/bpf_testmod.c
View file

@ -53,6 +53,13 @@ struct bpf_testmod_struct_arg_4 {
int b;
};
struct bpf_testmod_struct_arg_5 {
char a;
short b;
int c;
long d;
};
__bpf_hook_start();
noinline int
@ -110,6 +117,15 @@ bpf_testmod_test_struct_arg_8(u64 a, void *b, short c, int d, void *e,
return bpf_testmod_test_struct_arg_result;
}
noinline int
bpf_testmod_test_struct_arg_9(u64 a, void *b, short c, int d, void *e, char f,
short g, struct bpf_testmod_struct_arg_5 h, long i)
{
bpf_testmod_test_struct_arg_result = a + (long)b + c + d + (long)e +
f + g + h.a + h.b + h.c + h.d + i;
return bpf_testmod_test_struct_arg_result;
}
noinline int
bpf_testmod_test_arg_ptr_to_struct(struct bpf_testmod_struct_arg_1 *a) {
bpf_testmod_test_struct_arg_result = a->a;
@ -305,6 +321,7 @@ bpf_testmod_test_read(struct file *file, struct kobject *kobj,
struct bpf_testmod_struct_arg_2 struct_arg2 = {2, 3};
struct bpf_testmod_struct_arg_3 *struct_arg3;
struct bpf_testmod_struct_arg_4 struct_arg4 = {21, 22};
struct bpf_testmod_struct_arg_5 struct_arg5 = {23, 24, 25, 26};
int i = 1;
while (bpf_testmod_return_ptr(i))
@ -319,6 +336,8 @@ bpf_testmod_test_read(struct file *file, struct kobject *kobj,
(void *)20, struct_arg4);
(void)bpf_testmod_test_struct_arg_8(16, (void *)17, 18, 19,
(void *)20, struct_arg4, 23);
(void)bpf_testmod_test_struct_arg_9(16, (void *)17, 18, 19, (void *)20,
21, 22, struct_arg5, 27);
(void)bpf_testmod_test_arg_ptr_to_struct(&struct_arg1_2);

14
tools/testing/selftests/bpf/prog_tests/tracing_struct.c
View file

@ -94,6 +94,20 @@ static void test_struct_many_args(void)
ASSERT_EQ(skel->bss->t8_g, 23, "t8:g");
ASSERT_EQ(skel->bss->t8_ret, 156, "t8 ret");
ASSERT_EQ(skel->bss->t9_a, 16, "t9:a");
ASSERT_EQ(skel->bss->t9_b, 17, "t9:b");
ASSERT_EQ(skel->bss->t9_c, 18, "t9:c");
ASSERT_EQ(skel->bss->t9_d, 19, "t9:d");
ASSERT_EQ(skel->bss->t9_e, 20, "t9:e");
ASSERT_EQ(skel->bss->t9_f, 21, "t9:f");
ASSERT_EQ(skel->bss->t9_g, 22, "t9:f");
ASSERT_EQ(skel->bss->t9_h_a, 23, "t9:h.a");
ASSERT_EQ(skel->bss->t9_h_b, 24, "t9:h.b");
ASSERT_EQ(skel->bss->t9_h_c, 25, "t9:h.c");
ASSERT_EQ(skel->bss->t9_h_d, 26, "t9:h.d");
ASSERT_EQ(skel->bss->t9_i, 27, "t9:i");
ASSERT_EQ(skel->bss->t9_ret, 258, "t9 ret");
destroy_skel:
tracing_struct_many_args__destroy(skel);
}

35
tools/testing/selftests/bpf/progs/tracing_struct_many_args.c
View file

@ -8,8 +8,16 @@ struct bpf_testmod_struct_arg_4 {
int b;
};
struct bpf_testmod_struct_arg_5 {
char a;
short b;
int c;
long d;
};
long t7_a, t7_b, t7_c, t7_d, t7_e, t7_f_a, t7_f_b, t7_ret;
long t8_a, t8_b, t8_c, t8_d, t8_e, t8_f_a, t8_f_b, t8_g, t8_ret;
long t9_a, t9_b, t9_c, t9_d, t9_e, t9_f, t9_g, t9_h_a, t9_h_b, t9_h_c, t9_h_d, t9_i, t9_ret;
SEC("fentry/bpf_testmod_test_struct_arg_7")
int BPF_PROG2(test_struct_many_args_1, __u64, a, void *, b, short, c, int, d,
@ -57,4 +65,31 @@ int BPF_PROG2(test_struct_many_args_4, __u64, a, void *, b, short, c, int, d,
return 0;
}
SEC("fentry/bpf_testmod_test_struct_arg_9")
int BPF_PROG2(test_struct_many_args_5, __u64, a, void *, b, short, c, int, d, void *, e,
char, f, short, g, struct bpf_testmod_struct_arg_5, h, long, i)
{
t9_a = a;
t9_b = (long)b;
t9_c = c;
t9_d = d;
t9_e = (long)e;
t9_f = f;
t9_g = g;
t9_h_a = h.a;
t9_h_b = h.b;
t9_h_c = h.c;
t9_h_d = h.d;
t9_i = i;
return 0;
}
SEC("fexit/bpf_testmod_test_struct_arg_9")
int BPF_PROG2(test_struct_many_args_6, __u64, a, void *, b, short, c, int, d, void *, e,
char, f, short, g, struct bpf_testmod_struct_arg_5, h, long, i, int, ret)
{
t9_ret = ret;
return 0;
}
char _license[] SEC("license") = "GPL";