1 // SPDX-License-Identifier: GPL-2.0
2
3 #include <test_progs.h>
4 #include "netns_cookie_prog.skel.h"
5 #include "network_helpers.h"
6
7 #ifndef SO_NETNS_COOKIE
8 #define SO_NETNS_COOKIE 71
9 #endif
10
11 static int duration;
12
13 void test_netns_cookie(void)
14 {
15 int server_fd = -1, client_fd = -1, cgroup_fd = -1;
16 int err, val, ret, map, verdict;
17 struct netns_cookie_prog *skel;
18 uint64_t cookie_expected_value;
19 socklen_t vallen = sizeof(cookie_expected_value);
20 static const char send_msg[] = "message";
21
22 skel = netns_cookie_prog__open_and_load();
23 if (!ASSERT_OK_PTR(skel, "skel_open"))
24 return;
25
26 cgroup_fd = test__join_cgroup("/netns_cookie");
27 if (CHECK(cgroup_fd < 0, "join_cgroup", "cgroup creation failed\n"))
28 goto done;
29
30 skel->links.get_netns_cookie_sockops = bpf_program__attach_cgroup(
31 skel->progs.get_netns_cookie_sockops, cgroup_fd);
32 if (!ASSERT_OK_PTR(skel->links.get_netns_cookie_sockops, "prog_attach"))
33 goto done;
34
35 verdict = bpf_program__fd(skel->progs.get_netns_cookie_sk_msg);
36 map = bpf_map__fd(skel->maps.sock_map);
37 err = bpf_prog_attach(verdict, map, BPF_SK_MSG_VERDICT, 0);
38 if (!ASSERT_OK(err, "prog_attach"))
39 goto done;
40
41 server_fd = start_server(AF_INET6, SOCK_STREAM, "::1", 0, 0);
42 if (CHECK(server_fd < 0, "start_server", "errno %d\n", errno))
43 goto done;
44
45 client_fd = connect_to_fd(server_fd, 0);
46 if (CHECK(client_fd < 0, "connect_to_fd", "errno %d\n", errno))
47 goto done;
48
49 ret = send(client_fd, send_msg, sizeof(send_msg), 0);
50 if (CHECK(ret != sizeof(send_msg), "send(msg)", "ret:%d\n", ret))
51 goto done;
52
53 err = bpf_map_lookup_elem(bpf_map__fd(skel->maps.sockops_netns_cookies),
54 &client_fd, &val);
55 if (!ASSERT_OK(err, "map_lookup(sockops_netns_cookies)"))
56 goto done;
57
58 err = getsockopt(client_fd, SOL_SOCKET, SO_NETNS_COOKIE,
59 &cookie_expected_value, &vallen);
60 if (!ASSERT_OK(err, "getsockopt"))
61 goto done;
62
63 ASSERT_EQ(val, cookie_expected_value, "cookie_value");
64
65 err = bpf_map_lookup_elem(bpf_map__fd(skel->maps.sk_msg_netns_cookies),
66 &client_fd, &val);
67 if (!ASSERT_OK(err, "map_lookup(sk_msg_netns_cookies)"))
68 goto done;
69
70 ASSERT_EQ(val, cookie_expected_value, "cookie_value");
71
72 done:
73 if (server_fd != -1)
74 close(server_fd);
75 if (client_fd != -1)
76 close(client_fd);
77 if (cgroup_fd != -1)
78 close(cgroup_fd);
79 netns_cookie_prog__destroy(skel);
80 }
81
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