1// SPDX-License-Identifier: GPL-2.0
2// Copyright (c) 2020 Google LLC.
3// Copyright (c) 2018 Facebook
4
5#include <test_progs.h>
6#include "socket_cookie_prog.skel.h"
7#include "network_helpers.h"
8
9static int duration;
10
11struct socket_cookie {
12	__u64 cookie_key;
13	__u32 cookie_value;
14};
15
16void test_socket_cookie(void)
17{
18	int server_fd = 0, client_fd = 0, cgroup_fd = 0, err = 0;
19	socklen_t addr_len = sizeof(struct sockaddr_in6);
20	struct socket_cookie_prog *skel;
21	__u32 cookie_expected_value;
22	struct sockaddr_in6 addr;
23	struct socket_cookie val;
24
25	skel = socket_cookie_prog__open_and_load();
26	if (!ASSERT_OK_PTR(skel, "skel_open"))
27		return;
28
29	cgroup_fd = test__join_cgroup("/socket_cookie");
30	if (CHECK(cgroup_fd < 0, "join_cgroup", "cgroup creation failed\n"))
31		goto out;
32
33	skel->links.set_cookie = bpf_program__attach_cgroup(
34		skel->progs.set_cookie, cgroup_fd);
35	if (!ASSERT_OK_PTR(skel->links.set_cookie, "prog_attach"))
36		goto close_cgroup_fd;
37
38	skel->links.update_cookie_sockops = bpf_program__attach_cgroup(
39		skel->progs.update_cookie_sockops, cgroup_fd);
40	if (!ASSERT_OK_PTR(skel->links.update_cookie_sockops, "prog_attach"))
41		goto close_cgroup_fd;
42
43	skel->links.update_cookie_tracing = bpf_program__attach(
44		skel->progs.update_cookie_tracing);
45	if (!ASSERT_OK_PTR(skel->links.update_cookie_tracing, "prog_attach"))
46		goto close_cgroup_fd;
47
48	server_fd = start_server(AF_INET6, SOCK_STREAM, "::1", 0, 0);
49	if (CHECK(server_fd < 0, "start_server", "errno %d\n", errno))
50		goto close_cgroup_fd;
51
52	client_fd = connect_to_fd(server_fd, 0);
53	if (CHECK(client_fd < 0, "connect_to_fd", "errno %d\n", errno))
54		goto close_server_fd;
55
56	err = bpf_map_lookup_elem(bpf_map__fd(skel->maps.socket_cookies),
57				  &client_fd, &val);
58	if (!ASSERT_OK(err, "map_lookup(socket_cookies)"))
59		goto close_client_fd;
60
61	err = getsockname(client_fd, (struct sockaddr *)&addr, &addr_len);
62	if (!ASSERT_OK(err, "getsockname"))
63		goto close_client_fd;
64
65	cookie_expected_value = (ntohs(addr.sin6_port) << 8) | 0xFF;
66	ASSERT_EQ(val.cookie_value, cookie_expected_value, "cookie_value");
67
68close_client_fd:
69	close(client_fd);
70close_server_fd:
71	close(server_fd);
72close_cgroup_fd:
73	close(cgroup_fd);
74out:
75	socket_cookie_prog__destroy(skel);
76}
77