/* SPDX-License-Identifier: GPL-2.0-only */#ifndef UTIL_H#define UTIL_H #include <sys/socket.h>#include <linux/vm_sockets.h> /* Tests can either run as the client or the server */enum test_mode {	TEST_MODE_UNSET,	TEST_MODE_CLIENT,	TEST_MODE_SERVER}; /* Test runner options */struct test_opts {	enum test_mode mode;	unsigned int peer_cid;}; /* A test case definition.  Test functions must print failures to stderr and * terminate with exit(EXIT_FAILURE). */struct test_case {	const char *name; /* human-readable name */ 	/* Called when test mode is TEST_MODE_CLIENT */	void (*run_client)(const struct test_opts *opts); 	/* Called when test mode is TEST_MODE_SERVER */	void (*run_server)(const struct test_opts *opts); 	bool skip;}; void init_signals(void);unsigned int parse_cid(const char *str);int vsock_stream_connect(unsigned int cid, unsigned int port);int vsock_stream_accept(unsigned int cid, unsigned int port,			struct sockaddr_vm *clientaddrp);void vsock_wait_remote_close(int fd);void send_byte(int fd, int expected_ret, int flags);void recv_byte(int fd, int expected_ret, int flags);void run_tests(const struct test_case *test_cases,	       const struct test_opts *opts);void list_tests(const struct test_case *test_cases);void skip_test(struct test_case *test_cases, size_t test_cases_len,	       const char *test_id_str);#endif /* UTIL_H */