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#define loopback 1
12
13static int duration;
14
15void test_netns_cookie(void)
16{
17	LIBBPF_OPTS(bpf_prog_attach_opts, opta);
18	LIBBPF_OPTS(bpf_prog_detach_opts, optd);
19	int server_fd = -1, client_fd = -1, cgroup_fd = -1;
20	int err, val, ret, map, verdict, tc_fd;
21	struct netns_cookie_prog *skel;
22	uint64_t cookie_expected_value;
23	socklen_t vallen = sizeof(cookie_expected_value);
24	static const char send_msg[] = "message";
25
26	skel = netns_cookie_prog__open_and_load();
27	if (!ASSERT_OK_PTR(skel, "skel_open"))
28		return;
29
30	cgroup_fd = test__join_cgroup("/netns_cookie");
31	if (CHECK(cgroup_fd < 0, "join_cgroup", "cgroup creation failed\n"))
32		goto done;
33
34	skel->links.get_netns_cookie_sockops = bpf_program__attach_cgroup(
35		skel->progs.get_netns_cookie_sockops, cgroup_fd);
36	if (!ASSERT_OK_PTR(skel->links.get_netns_cookie_sockops, "prog_attach"))
37		goto done;
38
39	verdict = bpf_program__fd(skel->progs.get_netns_cookie_sk_msg);
40	map = bpf_map__fd(skel->maps.sock_map);
41	err = bpf_prog_attach(verdict, map, BPF_SK_MSG_VERDICT, 0);
42	if (!ASSERT_OK(err, "prog_attach"))
43		goto done;
44
45	tc_fd = bpf_program__fd(skel->progs.get_netns_cookie_tcx);
46	err = bpf_prog_attach_opts(tc_fd, loopback, BPF_TCX_INGRESS, &opta);
47	if (!ASSERT_OK(err, "prog_attach"))
48		goto done;
49
50	server_fd = start_server(AF_INET6, SOCK_STREAM, "::1", 0, 0);
51	if (CHECK(server_fd < 0, "start_server", "errno %d\n", errno))
52		goto cleanup_tc;
53
54	client_fd = connect_to_fd(server_fd, 0);
55	if (CHECK(client_fd < 0, "connect_to_fd", "errno %d\n", errno))
56		goto cleanup_tc;
57
58	ret = send(client_fd, send_msg, sizeof(send_msg), 0);
59	if (CHECK(ret != sizeof(send_msg), "send(msg)", "ret:%d\n", ret))
60		goto cleanup_tc;
61
62	err = bpf_map_lookup_elem(bpf_map__fd(skel->maps.sockops_netns_cookies),
63				  &client_fd, &val);
64	if (!ASSERT_OK(err, "map_lookup(sockops_netns_cookies)"))
65		goto cleanup_tc;
66
67	err = getsockopt(client_fd, SOL_SOCKET, SO_NETNS_COOKIE,
68			 &cookie_expected_value, &vallen);
69	if (!ASSERT_OK(err, "getsockopt"))
70		goto cleanup_tc;
71
72	ASSERT_EQ(val, cookie_expected_value, "cookie_value");
73
74	err = bpf_map_lookup_elem(bpf_map__fd(skel->maps.sk_msg_netns_cookies),
75				  &client_fd, &val);
76	if (!ASSERT_OK(err, "map_lookup(sk_msg_netns_cookies)"))
77		goto cleanup_tc;
78
79	ASSERT_EQ(val, cookie_expected_value, "cookie_value");
80	ASSERT_EQ(skel->bss->tcx_init_netns_cookie, cookie_expected_value, "cookie_value");
81	ASSERT_EQ(skel->bss->tcx_netns_cookie, cookie_expected_value, "cookie_value");
82
83cleanup_tc:
84	err = bpf_prog_detach_opts(tc_fd, loopback, BPF_TCX_INGRESS, &optd);
85	ASSERT_OK(err, "prog_detach");
86
87done:
88	if (server_fd != -1)
89		close(server_fd);
90	if (client_fd != -1)
91		close(client_fd);
92	if (cgroup_fd != -1)
93		close(cgroup_fd);
94	netns_cookie_prog__destroy(skel);
95}