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
7static 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
40out:
41	type_cast__destroy(skel);
42}
43
44static 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
75out:
76	type_cast__destroy(skel);
77}
78
79static const char * const negative_tests[] = {
80	"untrusted_ptr",
81	"kctx_u64",
82};
83
84static 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");
101out:
102		type_cast__destroy(skel);
103	}
104}
105
106void 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