1// SPDX-License-Identifier: GPL-2.0-only
2
3/*
4 * Copyright 2020 Google LLC.
5 */
6
7#include <test_progs.h>
8#include <network_helpers.h>
9
10void test_load_bytes_relative(void)
11{
12	int server_fd, cgroup_fd, prog_fd, map_fd, client_fd;
13	int err;
14	struct bpf_object *obj;
15	struct bpf_program *prog;
16	struct bpf_map *test_result;
17	__u32 duration = 0;
18
19	__u32 map_key = 0;
20	__u32 map_value = 0;
21
22	cgroup_fd = test__join_cgroup("/load_bytes_relative");
23	if (CHECK_FAIL(cgroup_fd < 0))
24		return;
25
26	server_fd = start_server(AF_INET, SOCK_STREAM, NULL, 0, 0);
27	if (CHECK_FAIL(server_fd < 0))
28		goto close_cgroup_fd;
29
30	err = bpf_prog_test_load("./load_bytes_relative.bpf.o", BPF_PROG_TYPE_CGROUP_SKB,
31				 &obj, &prog_fd);
32	if (CHECK_FAIL(err))
33		goto close_server_fd;
34
35	test_result = bpf_object__find_map_by_name(obj, "test_result");
36	if (CHECK_FAIL(!test_result))
37		goto close_bpf_object;
38
39	map_fd = bpf_map__fd(test_result);
40	if (map_fd < 0)
41		goto close_bpf_object;
42
43	prog = bpf_object__find_program_by_name(obj, "load_bytes_relative");
44	if (CHECK_FAIL(!prog))
45		goto close_bpf_object;
46
47	err = bpf_prog_attach(prog_fd, cgroup_fd, BPF_CGROUP_INET_EGRESS,
48			      BPF_F_ALLOW_MULTI);
49	if (CHECK_FAIL(err))
50		goto close_bpf_object;
51
52	client_fd = connect_to_fd(server_fd, 0);
53	if (CHECK_FAIL(client_fd < 0))
54		goto close_bpf_object;
55	close(client_fd);
56
57	err = bpf_map_lookup_elem(map_fd, &map_key, &map_value);
58	if (CHECK_FAIL(err))
59		goto close_bpf_object;
60
61	CHECK(map_value != 1, "bpf", "bpf program returned failure");
62
63close_bpf_object:
64	bpf_object__close(obj);
65
66close_server_fd:
67	close(server_fd);
68
69close_cgroup_fd:
70	close(cgroup_fd);
71}
72