1 // SPDX-License-Identifier: GPL-2.0
2 /* Copyright (c) 2022 Meta Platforms, Inc. and affiliates. */
3 #include <test_progs.h>
4 #include <network_helpers.h>
5 #include "type_cast.skel.h"
6
test_xdp(void)7 static void test_xdp(void)
8 {
9 struct type_cast *skel;
10 int err, prog_fd;
11 char buf[128];
12
13 LIBBPF_OPTS(bpf_test_run_opts, topts,
14 .data_in = &pkt_v4,
15 .data_size_in = sizeof(pkt_v4),
16 .data_out = buf,
17 .data_size_out = sizeof(buf),
18 .repeat = 1,
19 );
20
21 skel = type_cast__open();
22 if (!ASSERT_OK_PTR(skel, "skel_open"))
23 return;
24
25 bpf_program__set_autoload(skel->progs.md_xdp, true);
26 err = type_cast__load(skel);
27 if (!ASSERT_OK(err, "skel_load"))
28 goto out;
29
30 prog_fd = bpf_program__fd(skel->progs.md_xdp);
31 err = bpf_prog_test_run_opts(prog_fd, &topts);
32 ASSERT_OK(err, "test_run");
33 ASSERT_EQ(topts.retval, XDP_PASS, "xdp test_run retval");
34
35 ASSERT_EQ(skel->bss->ifindex, 1, "xdp_md ifindex");
36 ASSERT_EQ(skel->bss->ifindex, skel->bss->ingress_ifindex, "xdp_md ingress_ifindex");
37 ASSERT_STREQ(skel->bss->name, "lo", "xdp_md name");
38 ASSERT_NEQ(skel->bss->inum, 0, "xdp_md inum");
39
40 out:
41 type_cast__destroy(skel);
42 }
43
test_tc(void)44 static void test_tc(void)
45 {
46 struct type_cast *skel;
47 int err, prog_fd;
48
49 LIBBPF_OPTS(bpf_test_run_opts, topts,
50 .data_in = &pkt_v4,
51 .data_size_in = sizeof(pkt_v4),
52 .repeat = 1,
53 );
54
55 skel = type_cast__open();
56 if (!ASSERT_OK_PTR(skel, "skel_open"))
57 return;
58
59 bpf_program__set_autoload(skel->progs.md_skb, true);
60 err = type_cast__load(skel);
61 if (!ASSERT_OK(err, "skel_load"))
62 goto out;
63
64 prog_fd = bpf_program__fd(skel->progs.md_skb);
65 err = bpf_prog_test_run_opts(prog_fd, &topts);
66 ASSERT_OK(err, "test_run");
67 ASSERT_EQ(topts.retval, 0, "tc test_run retval");
68
69 ASSERT_EQ(skel->bss->meta_len, 0, "skb meta_len");
70 ASSERT_EQ(skel->bss->frag0_len, 0, "skb frag0_len");
71 ASSERT_NEQ(skel->bss->kskb_len, 0, "skb len");
72 ASSERT_NEQ(skel->bss->kskb2_len, 0, "skb2 len");
73 ASSERT_EQ(skel->bss->kskb_len, skel->bss->kskb2_len, "skb len compare");
74
75 out:
76 type_cast__destroy(skel);
77 }
78
79 static const char * const negative_tests[] = {
80 "untrusted_ptr",
81 "kctx_u64",
82 };
83
test_negative(void)84 static void test_negative(void)
85 {
86 struct bpf_program *prog;
87 struct type_cast *skel;
88 int i, err;
89
90 for (i = 0; i < ARRAY_SIZE(negative_tests); i++) {
91 skel = type_cast__open();
92 if (!ASSERT_OK_PTR(skel, "skel_open"))
93 return;
94
95 prog = bpf_object__find_program_by_name(skel->obj, negative_tests[i]);
96 if (!ASSERT_OK_PTR(prog, "bpf_object__find_program_by_name"))
97 goto out;
98 bpf_program__set_autoload(prog, true);
99 err = type_cast__load(skel);
100 ASSERT_ERR(err, "skel_load");
101 out:
102 type_cast__destroy(skel);
103 }
104 }
105
test_type_cast(void)106 void test_type_cast(void)
107 {
108 if (test__start_subtest("xdp"))
109 test_xdp();
110 if (test__start_subtest("tc"))
111 test_tc();
112 if (test__start_subtest("negative"))
113 test_negative();
114 }
115