[PATCH bpf-next v6 2/3] selftests/bpf: Factor out many args tests from tracing_struct

Pu Lehui
2024-07-02T12:18:08Z

From: Pu Lehui <pulehui@huawei.com>

Factor out many args tests from tracing_struct and rename some function
names to make more sense. Meanwhile, remove unnecessary skeleton detach
operation as it will be covered by skeleton destroy operation.

Signed-off-by: Pu Lehui <pulehui@huawei.com>
---
.../selftests/bpf/prog_tests/tracing_struct.c | 30 ++++++++--
.../selftests/bpf/progs/tracing_struct.c | 54 -----------------
.../bpf/progs/tracing_struct_many_args.c | 60 +++++++++++++++++++
3 files changed, 86 insertions(+), 58 deletions(-)
create mode 100644 tools/testing/selftests/bpf/progs/tracing_struct_many_args.c

diff --git a/tools/testing/selftests/bpf/prog_tests/tracing_struct.c b/tools/testing/selftests/bpf/prog_tests/tracing_struct.c
index fe0fb0c9849a..cb2a95da2617 100644
--- a/tools/testing/selftests/bpf/prog_tests/tracing_struct.c
+++ b/tools/testing/selftests/bpf/prog_tests/tracing_struct.c
@@ -3,8 +3,9 @@

#include <test_progs.h>
#include "tracing_struct.skel.h"
+#include "tracing_struct_many_args.skel.h"

-static void test_fentry(void)
+static void test_struct_args(void)
{
struct tracing_struct *skel;
int err;
@@ -55,6 +56,25 @@ static void test_fentry(void)

ASSERT_EQ(skel->bss->t6, 1, "t6 ret");

+destroy_skel:
+ tracing_struct__destroy(skel);
+}
+
+static void test_struct_many_args(void)
+{
+ struct tracing_struct_many_args *skel;
+ int err;
+
+ skel = tracing_struct_many_args__open_and_load();
+ if (!ASSERT_OK_PTR(skel, "tracing_struct_many_args__open_and_load"))
+ return;
+
+ err = tracing_struct_many_args__attach(skel);
+ if (!ASSERT_OK(err, "tracing_struct_many_args__attach"))
+ goto destroy_skel;
+
+ ASSERT_OK(trigger_module_test_read(256), "trigger_read");
+
ASSERT_EQ(skel->bss->t7_a, 16, "t7:a");
ASSERT_EQ(skel->bss->t7_b, 17, "t7:b");
ASSERT_EQ(skel->bss->t7_c, 18, "t7:c");
@@ -74,12 +94,14 @@ static void test_fentry(void)
ASSERT_EQ(skel->bss->t8_g, 23, "t8:g");
ASSERT_EQ(skel->bss->t8_ret, 156, "t8 ret");

- tracing_struct__detach(skel);
destroy_skel:
- tracing_struct__destroy(skel);
+ tracing_struct_many_args__destroy(skel);
}

void test_tracing_struct(void)
{
- test_fentry();
+ if (test__start_subtest("struct_args"))
+ test_struct_args();
+ if (test__start_subtest("struct_many_args"))
+ test_struct_many_args();
}
diff --git a/tools/testing/selftests/bpf/progs/tracing_struct.c b/tools/testing/selftests/bpf/progs/tracing_struct.c
index 515daef3c84b..c435a3a8328a 100644
--- a/tools/testing/selftests/bpf/progs/tracing_struct.c
+++ b/tools/testing/selftests/bpf/progs/tracing_struct.c
@@ -18,11 +18,6 @@ struct bpf_testmod_struct_arg_3 {
int b[];
};

-struct bpf_testmod_struct_arg_4 {
- u64 a;
- int b;
-};
-
long t1_a_a, t1_a_b, t1_b, t1_c, t1_ret, t1_nregs;
__u64 t1_reg0, t1_reg1, t1_reg2, t1_reg3;
long t2_a, t2_b_a, t2_b_b, t2_c, t2_ret;
@@ -30,9 +25,6 @@ long t3_a, t3_b, t3_c_a, t3_c_b, t3_ret;
long t4_a_a, t4_b, t4_c, t4_d, t4_e_a, t4_e_b, t4_ret;
long t5_ret;
int t6;
-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;
-

SEC("fentry/bpf_testmod_test_struct_arg_1")
int BPF_PROG2(test_struct_arg_1, struct bpf_testmod_struct_arg_2, a, int, b, int, c)
@@ -138,50 +130,4 @@ int BPF_PROG2(test_struct_arg_11, struct bpf_testmod_struct_arg_3 *, a)
return 0;
}

-SEC("fentry/bpf_testmod_test_struct_arg_7")
-int BPF_PROG2(test_struct_arg_12, __u64, a, void *, b, short, c, int, d,
- void *, e, struct bpf_testmod_struct_arg_4, f)
-{
- t7_a = a;
- t7_b = (long)b;
- t7_c = c;
- t7_d = d;
- t7_e = (long)e;
- t7_f_a = f.a;
- t7_f_b = f.b;
- return 0;
-}
-
-SEC("fexit/bpf_testmod_test_struct_arg_7")
-int BPF_PROG2(test_struct_arg_13, __u64, a, void *, b, short, c, int, d,
- void *, e, struct bpf_testmod_struct_arg_4, f, int, ret)
-{
- t7_ret = ret;
- return 0;
-}
-
-SEC("fentry/bpf_testmod_test_struct_arg_8")
-int BPF_PROG2(test_struct_arg_14, __u64, a, void *, b, short, c, int, d,
- void *, e, struct bpf_testmod_struct_arg_4, f, int, g)
-{
- t8_a = a;
- t8_b = (long)b;
- t8_c = c;
- t8_d = d;
- t8_e = (long)e;
- t8_f_a = f.a;
- t8_f_b = f.b;
- t8_g = g;
- return 0;
-}
-
-SEC("fexit/bpf_testmod_test_struct_arg_8")
-int BPF_PROG2(test_struct_arg_15, __u64, a, void *, b, short, c, int, d,
- void *, e, struct bpf_testmod_struct_arg_4, f, int, g,
- int, ret)
-{
- t8_ret = ret;
- return 0;
-}
-
char _license[] SEC("license") = "GPL";
diff --git a/tools/testing/selftests/bpf/progs/tracing_struct_many_args.c b/tools/testing/selftests/bpf/progs/tracing_struct_many_args.c
new file mode 100644
index 000000000000..3de4bb918178
--- /dev/null
+++ b/tools/testing/selftests/bpf/progs/tracing_struct_many_args.c
@@ -0,0 +1,60 @@
+// SPDX-License-Identifier: GPL-2.0
+#include <vmlinux.h>
+#include <bpf/bpf_tracing.h>
+#include <bpf/bpf_helpers.h>
+
+struct bpf_testmod_struct_arg_4 {
+ u64 a;
+ int b;
+};
+
+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;
+
+SEC("fentry/bpf_testmod_test_struct_arg_7")
+int BPF_PROG2(test_struct_many_args_1, __u64, a, void *, b, short, c, int, d,
+ void *, e, struct bpf_testmod_struct_arg_4, f)
+{
+ t7_a = a;
+ t7_b = (long)b;
+ t7_c = c;
+ t7_d = d;
+ t7_e = (long)e;
+ t7_f_a = f.a;
+ t7_f_b = f.b;
+ return 0;
+}
+
+SEC("fexit/bpf_testmod_test_struct_arg_7")
+int BPF_PROG2(test_struct_many_args_2, __u64, a, void *, b, short, c, int, d,
+ void *, e, struct bpf_testmod_struct_arg_4, f, int, ret)
+{
+ t7_ret = ret;
+ return 0;
+}
+
+SEC("fentry/bpf_testmod_test_struct_arg_8")
+int BPF_PROG2(test_struct_many_args_3, __u64, a, void *, b, short, c, int, d,
+ void *, e, struct bpf_testmod_struct_arg_4, f, int, g)
+{
+ t8_a = a;
+ t8_b = (long)b;
+ t8_c = c;
+ t8_d = d;
+ t8_e = (long)e;
+ t8_f_a = f.a;
+ t8_f_b = f.b;
+ t8_g = g;
+ return 0;
+}
+
+SEC("fexit/bpf_testmod_test_struct_arg_8")
+int BPF_PROG2(test_struct_many_args_4, __u64, a, void *, b, short, c, int, d,
+ void *, e, struct bpf_testmod_struct_arg_4, f, int, g,
+ int, ret)
+{
+ t8_ret = ret;
+ return 0;
+}
+
+char _license[] SEC("license") = "GPL";
--
2.34.1