1 // SPDX-License-Identifier: GPL-2.0
2 /* Copyright (C) 2021. Huawei Technologies Co., Ltd */
3 #include <test_progs.h>
4 #include "dummy_st_ops.skel.h"
5 #include "trace_dummy_st_ops.skel.h"
6
7 /* Need to keep consistent with definition in include/linux/bpf.h */
8 struct bpf_dummy_ops_state {
9 int val;
10 };
11
test_dummy_st_ops_attach(void)12 static void test_dummy_st_ops_attach(void)
13 {
14 struct dummy_st_ops *skel;
15 struct bpf_link *link;
16
17 skel = dummy_st_ops__open_and_load();
18 if (!ASSERT_OK_PTR(skel, "dummy_st_ops_load"))
19 return;
20
21 link = bpf_map__attach_struct_ops(skel->maps.dummy_1);
22 ASSERT_EQ(libbpf_get_error(link), -EOPNOTSUPP, "dummy_st_ops_attach");
23
24 dummy_st_ops__destroy(skel);
25 }
26
test_dummy_init_ret_value(void)27 static void test_dummy_init_ret_value(void)
28 {
29 __u64 args[1] = {0};
30 LIBBPF_OPTS(bpf_test_run_opts, attr,
31 .ctx_in = args,
32 .ctx_size_in = sizeof(args),
33 );
34 struct dummy_st_ops *skel;
35 int fd, err;
36
37 skel = dummy_st_ops__open_and_load();
38 if (!ASSERT_OK_PTR(skel, "dummy_st_ops_load"))
39 return;
40
41 fd = bpf_program__fd(skel->progs.test_1);
42 err = bpf_prog_test_run_opts(fd, &attr);
43 ASSERT_OK(err, "test_run");
44 ASSERT_EQ(attr.retval, 0xf2f3f4f5, "test_ret");
45
46 dummy_st_ops__destroy(skel);
47 }
48
test_dummy_init_ptr_arg(void)49 static void test_dummy_init_ptr_arg(void)
50 {
51 int exp_retval = 0xbeef;
52 struct bpf_dummy_ops_state in_state = {
53 .val = exp_retval,
54 };
55 __u64 args[1] = {(unsigned long)&in_state};
56 LIBBPF_OPTS(bpf_test_run_opts, attr,
57 .ctx_in = args,
58 .ctx_size_in = sizeof(args),
59 );
60 struct trace_dummy_st_ops *trace_skel;
61 struct dummy_st_ops *skel;
62 int fd, err;
63
64 skel = dummy_st_ops__open_and_load();
65 if (!ASSERT_OK_PTR(skel, "dummy_st_ops_load"))
66 return;
67
68 fd = bpf_program__fd(skel->progs.test_1);
69
70 trace_skel = trace_dummy_st_ops__open();
71 if (!ASSERT_OK_PTR(trace_skel, "trace_dummy_st_ops__open"))
72 goto done;
73
74 err = bpf_program__set_attach_target(trace_skel->progs.fentry_test_1,
75 fd, "test_1");
76 if (!ASSERT_OK(err, "set_attach_target(fentry_test_1)"))
77 goto done;
78
79 err = trace_dummy_st_ops__load(trace_skel);
80 if (!ASSERT_OK(err, "load(trace_skel)"))
81 goto done;
82
83 err = trace_dummy_st_ops__attach(trace_skel);
84 if (!ASSERT_OK(err, "attach(trace_skel)"))
85 goto done;
86
87 err = bpf_prog_test_run_opts(fd, &attr);
88 ASSERT_OK(err, "test_run");
89 ASSERT_EQ(in_state.val, 0x5a, "test_ptr_ret");
90 ASSERT_EQ(attr.retval, exp_retval, "test_ret");
91 ASSERT_EQ(trace_skel->bss->val, exp_retval, "fentry_val");
92
93 done:
94 dummy_st_ops__destroy(skel);
95 trace_dummy_st_ops__destroy(trace_skel);
96 }
97
test_dummy_multiple_args(void)98 static void test_dummy_multiple_args(void)
99 {
100 __u64 args[5] = {0, -100, 0x8a5f, 'c', 0x1234567887654321ULL};
101 LIBBPF_OPTS(bpf_test_run_opts, attr,
102 .ctx_in = args,
103 .ctx_size_in = sizeof(args),
104 );
105 struct dummy_st_ops *skel;
106 int fd, err;
107 size_t i;
108 char name[8];
109
110 skel = dummy_st_ops__open_and_load();
111 if (!ASSERT_OK_PTR(skel, "dummy_st_ops_load"))
112 return;
113
114 fd = bpf_program__fd(skel->progs.test_2);
115 err = bpf_prog_test_run_opts(fd, &attr);
116 ASSERT_OK(err, "test_run");
117 for (i = 0; i < ARRAY_SIZE(args); i++) {
118 snprintf(name, sizeof(name), "arg %zu", i);
119 ASSERT_EQ(skel->bss->test_2_args[i], args[i], name);
120 }
121
122 dummy_st_ops__destroy(skel);
123 }
124
test_dummy_st_ops(void)125 void test_dummy_st_ops(void)
126 {
127 if (test__start_subtest("dummy_st_ops_attach"))
128 test_dummy_st_ops_attach();
129 if (test__start_subtest("dummy_init_ret_value"))
130 test_dummy_init_ret_value();
131 if (test__start_subtest("dummy_init_ptr_arg"))
132 test_dummy_init_ptr_arg();
133 if (test__start_subtest("dummy_multiple_args"))
134 test_dummy_multiple_args();
135 }
136