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 9 static int duration; 10 11 struct socket_cookie { 12 __u64 cookie_key; 13 __u32 cookie_value; 14 }; 15 16 void 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 68 close_client_fd: 69 close(client_fd); 70 close_server_fd: 71 close(server_fd); 72 close_cgroup_fd: 73 close(cgroup_fd); 74 out: 75 socket_cookie_prog__destroy(skel); 76 } 77