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brintos / linux-shallow public Read only

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1// SPDX-License-Identifier: GPL-2.0-only2 3/*4 * Copyright 2020 Google LLC.5 */6 7#include <test_progs.h>8#include <network_helpers.h>9 10void 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 63close_bpf_object:64	bpf_object__close(obj);65 66close_server_fd:67	close(server_fd);68 69close_cgroup_fd:70	close(cgroup_fd);71}72