1 // SPDX-License-Identifier: GPL-2.0-only 2 3 /* 4 * Copyright 2020 Google LLC. 5 */ 6 7 #include <test_progs.h> 8 #include <network_helpers.h> 9 10 void test_load_bytes_relative(void) 11 { 12 int server_fd, cgroup_fd, prog_fd, map_fd, client_fd; 13 int err; 14 struct bpf_object *obj; 15 struct bpf_program *prog; 16 struct bpf_map *test_result; 17 __u32 duration = 0; 18 19 __u32 map_key = 0; 20 __u32 map_value = 0; 21 22 cgroup_fd = test__join_cgroup("/load_bytes_relative"); 23 if (CHECK_FAIL(cgroup_fd < 0)) 24 return; 25 26 server_fd = start_server(AF_INET, SOCK_STREAM, NULL, 0, 0); 27 if (CHECK_FAIL(server_fd < 0)) 28 goto close_cgroup_fd; 29 30 err = bpf_prog_test_load("./load_bytes_relative.bpf.o", BPF_PROG_TYPE_CGROUP_SKB, 31 &obj, &prog_fd); 32 if (CHECK_FAIL(err)) 33 goto close_server_fd; 34 35 test_result = bpf_object__find_map_by_name(obj, "test_result"); 36 if (CHECK_FAIL(!test_result)) 37 goto close_bpf_object; 38 39 map_fd = bpf_map__fd(test_result); 40 if (map_fd < 0) 41 goto close_bpf_object; 42 43 prog = bpf_object__find_program_by_name(obj, "load_bytes_relative"); 44 if (CHECK_FAIL(!prog)) 45 goto close_bpf_object; 46 47 err = bpf_prog_attach(prog_fd, cgroup_fd, BPF_CGROUP_INET_EGRESS, 48 BPF_F_ALLOW_MULTI); 49 if (CHECK_FAIL(err)) 50 goto close_bpf_object; 51 52 client_fd = connect_to_fd(server_fd, 0); 53 if (CHECK_FAIL(client_fd < 0)) 54 goto close_bpf_object; 55 close(client_fd); 56 57 err = bpf_map_lookup_elem(map_fd, &map_key, &map_value); 58 if (CHECK_FAIL(err)) 59 goto close_bpf_object; 60 61 CHECK(map_value != 1, "bpf", "bpf program returned failure"); 62 63 close_bpf_object: 64 bpf_object__close(obj); 65 66 close_server_fd: 67 close(server_fd); 68 69 close_cgroup_fd: 70 close(cgroup_fd); 71 } 72