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 };
13 
14 static struct {
15 	const char *prog_name;
16 	enum test_setup_type type;
17 } success_tests[] = {
18 	{"test_read_write", SETUP_SYSCALL_SLEEP},
19 	{"test_dynptr_data", SETUP_SYSCALL_SLEEP},
20 	{"test_ringbuf", SETUP_SYSCALL_SLEEP},
21 	{"test_skb_readonly", SETUP_SKB_PROG},
22 	{"test_dynptr_skb_data", SETUP_SKB_PROG},
23 	{"test_adjust", SETUP_SYSCALL_SLEEP},
24 	{"test_adjust_err", SETUP_SYSCALL_SLEEP},
25 	{"test_zero_size_dynptr", SETUP_SYSCALL_SLEEP},
26 	{"test_dynptr_is_null", SETUP_SYSCALL_SLEEP},
27 	{"test_dynptr_is_rdonly", SETUP_SKB_PROG},
28 	{"test_dynptr_clone", SETUP_SKB_PROG},
29 	{"test_dynptr_skb_no_buff", SETUP_SKB_PROG},
30 	{"test_dynptr_skb_strcmp", SETUP_SKB_PROG},
31 };
32 
33 static void verify_success(const char *prog_name, enum test_setup_type setup_type)
34 {
35 	struct dynptr_success *skel;
36 	struct bpf_program *prog;
37 	struct bpf_link *link;
38        int err;
39 
40 	skel = dynptr_success__open();
41 	if (!ASSERT_OK_PTR(skel, "dynptr_success__open"))
42 		return;
43 
44 	skel->bss->pid = getpid();
45 
46 	prog = bpf_object__find_program_by_name(skel->obj, prog_name);
47 	if (!ASSERT_OK_PTR(prog, "bpf_object__find_program_by_name"))
48 		goto cleanup;
49 
50        bpf_program__set_autoload(prog, true);
51 
52 	err = dynptr_success__load(skel);
53 	if (!ASSERT_OK(err, "dynptr_success__load"))
54 		goto cleanup;
55 
56 	switch (setup_type) {
57 	case SETUP_SYSCALL_SLEEP:
58 		link = bpf_program__attach(prog);
59 		if (!ASSERT_OK_PTR(link, "bpf_program__attach"))
60 			goto cleanup;
61 
62 		usleep(1);
63 
64 		bpf_link__destroy(link);
65 		break;
66 	case SETUP_SKB_PROG:
67 	{
68 		int prog_fd;
69 		char buf[64];
70 
71 		LIBBPF_OPTS(bpf_test_run_opts, topts,
72 			    .data_in = &pkt_v4,
73 			    .data_size_in = sizeof(pkt_v4),
74 			    .data_out = buf,
75 			    .data_size_out = sizeof(buf),
76 			    .repeat = 1,
77 		);
78 
79 		prog_fd = bpf_program__fd(prog);
80 		if (!ASSERT_GE(prog_fd, 0, "prog_fd"))
81 			goto cleanup;
82 
83 		err = bpf_prog_test_run_opts(prog_fd, &topts);
84 
85 		if (!ASSERT_OK(err, "test_run"))
86 			goto cleanup;
87 
88 		break;
89 	}
90 	}
91 
92 	ASSERT_EQ(skel->bss->err, 0, "err");
93 
94 cleanup:
95 	dynptr_success__destroy(skel);
96 }
97 
98 void test_dynptr(void)
99 {
100 	int i;
101 
102 	for (i = 0; i < ARRAY_SIZE(success_tests); i++) {
103 		if (!test__start_subtest(success_tests[i].prog_name))
104 			continue;
105 
106 		verify_success(success_tests[i].prog_name, success_tests[i].type);
107 	}
108 
109 	RUN_TESTS(dynptr_fail);
110 }
111