1
2
3
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
