1 // SPDX-License-Identifier: GPL-2.0
2 /* Copyright (c) 2022 Facebook */
3
4 #include <test_progs.h>
5 #include <network_helpers.h>
6 #include "dynptr_fail.skel.h"
7 #include "dynptr_success.skel.h"
8
9 enum test_setup_type {
10 SETUP_SYSCALL_SLEEP,
11 SETUP_SKB_PROG,
12 SETUP_SKB_PROG_TP,
13 };
14
15 static struct {
16 const char *prog_name;
17 enum test_setup_type type;
18 } success_tests[] = {
19 {"test_read_write", SETUP_SYSCALL_SLEEP},
20 {"test_dynptr_data", SETUP_SYSCALL_SLEEP},
21 {"test_ringbuf", SETUP_SYSCALL_SLEEP},
22 {"test_skb_readonly", SETUP_SKB_PROG},
23 {"test_dynptr_skb_data", SETUP_SKB_PROG},
24 {"test_adjust", SETUP_SYSCALL_SLEEP},
25 {"test_adjust_err", SETUP_SYSCALL_SLEEP},
26 {"test_zero_size_dynptr", SETUP_SYSCALL_SLEEP},
27 {"test_dynptr_is_null", SETUP_SYSCALL_SLEEP},
28 {"test_dynptr_is_rdonly", SETUP_SKB_PROG},
29 {"test_dynptr_clone", SETUP_SKB_PROG},
30 {"test_dynptr_skb_no_buff", SETUP_SKB_PROG},
31 {"test_dynptr_skb_strcmp", SETUP_SKB_PROG},
32 {"test_dynptr_skb_tp_btf", SETUP_SKB_PROG_TP},
33 };
34
verify_success(const char * prog_name,enum test_setup_type setup_type)35 static void verify_success(const char *prog_name, enum test_setup_type setup_type)
36 {
37 struct dynptr_success *skel;
38 struct bpf_program *prog;
39 struct bpf_link *link;
40 int err;
41
42 skel = dynptr_success__open();
43 if (!ASSERT_OK_PTR(skel, "dynptr_success__open"))
44 return;
45
46 skel->bss->pid = getpid();
47
48 prog = bpf_object__find_program_by_name(skel->obj, prog_name);
49 if (!ASSERT_OK_PTR(prog, "bpf_object__find_program_by_name"))
50 goto cleanup;
51
52 bpf_program__set_autoload(prog, true);
53
54 err = dynptr_success__load(skel);
55 if (!ASSERT_OK(err, "dynptr_success__load"))
56 goto cleanup;
57
58 switch (setup_type) {
59 case SETUP_SYSCALL_SLEEP:
60 link = bpf_program__attach(prog);
61 if (!ASSERT_OK_PTR(link, "bpf_program__attach"))
62 goto cleanup;
63
64 usleep(1);
65
66 bpf_link__destroy(link);
67 break;
68 case SETUP_SKB_PROG:
69 {
70 int prog_fd;
71 char buf[64];
72
73 LIBBPF_OPTS(bpf_test_run_opts, topts,
74 .data_in = &pkt_v4,
75 .data_size_in = sizeof(pkt_v4),
76 .data_out = buf,
77 .data_size_out = sizeof(buf),
78 .repeat = 1,
79 );
80
81 prog_fd = bpf_program__fd(prog);
82 if (!ASSERT_GE(prog_fd, 0, "prog_fd"))
83 goto cleanup;
84
85 err = bpf_prog_test_run_opts(prog_fd, &topts);
86
87 if (!ASSERT_OK(err, "test_run"))
88 goto cleanup;
89
90 break;
91 }
92 case SETUP_SKB_PROG_TP:
93 {
94 struct __sk_buff skb = {};
95 struct bpf_object *obj;
96 int aux_prog_fd;
97
98 /* Just use its test_run to trigger kfree_skb tracepoint */
99 err = bpf_prog_test_load("./test_pkt_access.bpf.o", BPF_PROG_TYPE_SCHED_CLS,
100 &obj, &aux_prog_fd);
101 if (!ASSERT_OK(err, "prog_load sched cls"))
102 goto cleanup;
103
104 LIBBPF_OPTS(bpf_test_run_opts, topts,
105 .data_in = &pkt_v4,
106 .data_size_in = sizeof(pkt_v4),
107 .ctx_in = &skb,
108 .ctx_size_in = sizeof(skb),
109 );
110
111 link = bpf_program__attach(prog);
112 if (!ASSERT_OK_PTR(link, "bpf_program__attach"))
113 goto cleanup;
114
115 err = bpf_prog_test_run_opts(aux_prog_fd, &topts);
116 bpf_link__destroy(link);
117
118 if (!ASSERT_OK(err, "test_run"))
119 goto cleanup;
120
121 break;
122 }
123 }
124
125 ASSERT_EQ(skel->bss->err, 0, "err");
126
127 cleanup:
128 dynptr_success__destroy(skel);
129 }
130
test_dynptr(void)131 void test_dynptr(void)
132 {
133 int i;
134
135 for (i = 0; i < ARRAY_SIZE(success_tests); i++) {
136 if (!test__start_subtest(success_tests[i].prog_name))
137 continue;
138
139 verify_success(success_tests[i].prog_name, success_tests[i].type);
140 }
141
142 RUN_TESTS(dynptr_fail);
143 }
144