/* SPDX-License-Identifier: GPL-2.0-only */#ifndef UTIL_H#define UTIL_H #include <sys/socket.h>#include <linux/bitops.h>#include <linux/kernel.h>#include <linux/vm_sockets.h> /* All known vsock transports, see callers of vsock_core_register() */#define KNOWN_TRANSPORTS(x)		\	x(LOOPBACK, "loopback")		\	x(VIRTIO, "virtio")		\	x(VHOST, "vhost")		\	x(VMCI, "vmci")			\	x(HYPERV, "hvs") enum transport {	TRANSPORT_COUNTER_BASE = __COUNTER__ + 1,	#define x(name, symbol)		\		TRANSPORT_##name = BIT(__COUNTER__ - TRANSPORT_COUNTER_BASE),	KNOWN_TRANSPORTS(x)	TRANSPORT_NUM = __COUNTER__ - TRANSPORT_COUNTER_BASE,	#undef x}; static const char * const transport_ksyms[] = {	#define x(name, symbol) " " symbol "_transport",	KNOWN_TRANSPORTS(x)	#undef x}; static_assert(ARRAY_SIZE(transport_ksyms) == TRANSPORT_NUM);static_assert(BITS_PER_TYPE(int) >= TRANSPORT_NUM); #define TRANSPORTS_G2H   (TRANSPORT_VIRTIO | TRANSPORT_VMCI | TRANSPORT_HYPERV)#define TRANSPORTS_H2G   (TRANSPORT_VHOST | TRANSPORT_VMCI)#define TRANSPORTS_LOCAL (TRANSPORT_LOOPBACK) /* Tests can either run as the client or the server */enum test_mode {	TEST_MODE_UNSET,	TEST_MODE_CLIENT,	TEST_MODE_SERVER}; #define DEFAULT_PEER_PORT	1234 /* Test runner options */struct test_opts {	enum test_mode mode;	unsigned int peer_cid;	unsigned int peer_port;}; /* 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);unsigned int parse_port(const char *str);int vsock_connect_fd(int fd, unsigned int cid, unsigned int port);int vsock_connect(unsigned int cid, unsigned int port, int type);int vsock_accept(unsigned int cid, unsigned int port,		 struct sockaddr_vm *clientaddrp, int type);int vsock_stream_connect(unsigned int cid, unsigned int port);int vsock_bind_try(unsigned int cid, unsigned int port, int type);int vsock_bind(unsigned int cid, unsigned int port, int type);int vsock_bind_connect(unsigned int cid, unsigned int port,		       unsigned int bind_port, int type);int vsock_seqpacket_connect(unsigned int cid, unsigned int port);int vsock_stream_accept(unsigned int cid, unsigned int port,			struct sockaddr_vm *clientaddrp);int vsock_stream_listen(unsigned int cid, unsigned int port);int vsock_seqpacket_accept(unsigned int cid, unsigned int port,			   struct sockaddr_vm *clientaddrp);void vsock_wait_remote_close(int fd);bool vsock_ioctl_int(int fd, unsigned long op, int expected);bool vsock_wait_sent(int fd);void send_buf(int fd, const void *buf, size_t len, int flags,	      ssize_t expected_ret);void recv_buf(int fd, void *buf, size_t len, int flags, ssize_t expected_ret);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);void pick_test(struct test_case *test_cases, size_t test_cases_len,	       const char *test_id_str);unsigned long hash_djb2(const void *data, size_t len);size_t iovec_bytes(const struct iovec *iov, size_t iovnum);unsigned long iovec_hash_djb2(const struct iovec *iov, size_t iovnum);struct iovec *alloc_test_iovec(const struct iovec *test_iovec, int iovnum);void free_test_iovec(const struct iovec *test_iovec,		     struct iovec *iovec, int iovnum);void setsockopt_ull_check(int fd, int level, int optname,			  unsigned long long val, char const *errmsg);void setsockopt_int_check(int fd, int level, int optname, int val,			  char const *errmsg);void setsockopt_timeval_check(int fd, int level, int optname,			      struct timeval val, char const *errmsg);void enable_so_zerocopy_check(int fd);void enable_so_linger(int fd, int timeout);int get_transports(void);#endif /* UTIL_H */