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_success.skel.h"
5 #include "dummy_st_ops_fail.skel.h"
6 #include "trace_dummy_st_ops.skel.h"
7
8 /* Need to keep consistent with definition in include/linux/bpf.h */
9 struct bpf_dummy_ops_state {
10 int val;
11 };
12
test_dummy_st_ops_attach(void)13 static void test_dummy_st_ops_attach(void)
14 {
15 struct dummy_st_ops_success *skel;
16 struct bpf_link *link;
17
18 skel = dummy_st_ops_success__open_and_load();
19 if (!ASSERT_OK_PTR(skel, "dummy_st_ops_load"))
20 return;
21
22 link = bpf_map__attach_struct_ops(skel->maps.dummy_1);
23 ASSERT_EQ(libbpf_get_error(link), -EOPNOTSUPP, "dummy_st_ops_attach");
24
25 dummy_st_ops_success__destroy(skel);
26 }
27
test_dummy_init_ret_value(void)28 static void test_dummy_init_ret_value(void)
29 {
30 __u64 args[1] = {0};
31 LIBBPF_OPTS(bpf_test_run_opts, attr,
32 .ctx_in = args,
33 .ctx_size_in = sizeof(args),
34 );
35 struct dummy_st_ops_success *skel;
36 int fd, err;
37
38 skel = dummy_st_ops_success__open_and_load();
39 if (!ASSERT_OK_PTR(skel, "dummy_st_ops_load"))
40 return;
41
42 fd = bpf_program__fd(skel->progs.test_1);
43 err = bpf_prog_test_run_opts(fd, &attr);
44 ASSERT_OK(err, "test_run");
45 ASSERT_EQ(attr.retval, 0xf2f3f4f5, "test_ret");
46
47 dummy_st_ops_success__destroy(skel);
48 }
49
test_dummy_init_ptr_arg(void)50 static void test_dummy_init_ptr_arg(void)
51 {
52 int exp_retval = 0xbeef;
53 struct bpf_dummy_ops_state in_state = {
54 .val = exp_retval,
55 };
56 __u64 args[1] = {(unsigned long)&in_state};
57 LIBBPF_OPTS(bpf_test_run_opts, attr,
58 .ctx_in = args,
59 .ctx_size_in = sizeof(args),
60 );
61 struct trace_dummy_st_ops *trace_skel;
62 struct dummy_st_ops_success *skel;
63 int fd, err;
64
65 skel = dummy_st_ops_success__open_and_load();
66 if (!ASSERT_OK_PTR(skel, "dummy_st_ops_load"))
67 return;
68
69 fd = bpf_program__fd(skel->progs.test_1);
70
71 trace_skel = trace_dummy_st_ops__open();
72 if (!ASSERT_OK_PTR(trace_skel, "trace_dummy_st_ops__open"))
73 goto done;
74
75 err = bpf_program__set_attach_target(trace_skel->progs.fentry_test_1,
76 fd, "test_1");
77 if (!ASSERT_OK(err, "set_attach_target(fentry_test_1)"))
78 goto done;
79
80 err = trace_dummy_st_ops__load(trace_skel);
81 if (!ASSERT_OK(err, "load(trace_skel)"))
82 goto done;
83
84 err = trace_dummy_st_ops__attach(trace_skel);
85 if (!ASSERT_OK(err, "attach(trace_skel)"))
86 goto done;
87
88 err = bpf_prog_test_run_opts(fd, &attr);
89 ASSERT_OK(err, "test_run");
90 ASSERT_EQ(in_state.val, 0x5a, "test_ptr_ret");
91 ASSERT_EQ(attr.retval, exp_retval, "test_ret");
92 ASSERT_EQ(trace_skel->bss->val, exp_retval, "fentry_val");
93
94 done:
95 dummy_st_ops_success__destroy(skel);
96 trace_dummy_st_ops__destroy(trace_skel);
97 }
98
test_dummy_multiple_args(void)99 static void test_dummy_multiple_args(void)
100 {
101 __u64 args[5] = {0, -100, 0x8a5f, 'c', 0x1234567887654321ULL};
102 LIBBPF_OPTS(bpf_test_run_opts, attr,
103 .ctx_in = args,
104 .ctx_size_in = sizeof(args),
105 );
106 struct dummy_st_ops_success *skel;
107 int fd, err;
108 size_t i;
109 char name[8];
110
111 skel = dummy_st_ops_success__open_and_load();
112 if (!ASSERT_OK_PTR(skel, "dummy_st_ops_load"))
113 return;
114
115 fd = bpf_program__fd(skel->progs.test_2);
116 err = bpf_prog_test_run_opts(fd, &attr);
117 ASSERT_OK(err, "test_run");
118 for (i = 0; i < ARRAY_SIZE(args); i++) {
119 snprintf(name, sizeof(name), "arg %zu", i);
120 ASSERT_EQ(skel->bss->test_2_args[i], args[i], name);
121 }
122
123 dummy_st_ops_success__destroy(skel);
124 }
125
test_dummy_sleepable(void)126 static void test_dummy_sleepable(void)
127 {
128 __u64 args[1] = {0};
129 LIBBPF_OPTS(bpf_test_run_opts, attr,
130 .ctx_in = args,
131 .ctx_size_in = sizeof(args),
132 );
133 struct dummy_st_ops_success *skel;
134 int fd, err;
135
136 skel = dummy_st_ops_success__open_and_load();
137 if (!ASSERT_OK_PTR(skel, "dummy_st_ops_load"))
138 return;
139
140 fd = bpf_program__fd(skel->progs.test_sleepable);
141 err = bpf_prog_test_run_opts(fd, &attr);
142 ASSERT_OK(err, "test_run");
143
144 dummy_st_ops_success__destroy(skel);
145 }
146
test_dummy_st_ops(void)147 void test_dummy_st_ops(void)
148 {
149 if (test__start_subtest("dummy_st_ops_attach"))
150 test_dummy_st_ops_attach();
151 if (test__start_subtest("dummy_init_ret_value"))
152 test_dummy_init_ret_value();
153 if (test__start_subtest("dummy_init_ptr_arg"))
154 test_dummy_init_ptr_arg();
155 if (test__start_subtest("dummy_multiple_args"))
156 test_dummy_multiple_args();
157 if (test__start_subtest("dummy_sleepable"))
158 test_dummy_sleepable();
159
160 RUN_TESTS(dummy_st_ops_fail);
161 }
162