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1/* SPDX-License-Identifier: GPL-2.0-only */
2#ifndef UTIL_H
3#define UTIL_H
4
5#include <sys/socket.h>
6#include <linux/bitops.h>
7#include <linux/kernel.h>
8#include <linux/vm_sockets.h>
9
10/* All known vsock transports, see callers of vsock_core_register() */
11#define KNOWN_TRANSPORTS(x) \
12 x(LOOPBACK, "loopback") \
13 x(VIRTIO, "virtio") \
14 x(VHOST, "vhost") \
15 x(VMCI, "vmci") \
16 x(HYPERV, "hvs")
17
18enum transport {
19 TRANSPORT_COUNTER_BASE = __COUNTER__ + 1,
20 #define x(name, symbol) \
21 TRANSPORT_##name = BIT(__COUNTER__ - TRANSPORT_COUNTER_BASE),
22 KNOWN_TRANSPORTS(x)
23 TRANSPORT_NUM = __COUNTER__ - TRANSPORT_COUNTER_BASE,
24 #undef x
25};
26
27static const char * const transport_ksyms[] = {
28 #define x(name, symbol) " " symbol "_transport",
29 KNOWN_TRANSPORTS(x)
30 #undef x
31};
32
33static_assert(ARRAY_SIZE(transport_ksyms) == TRANSPORT_NUM);
34static_assert(BITS_PER_TYPE(int) >= TRANSPORT_NUM);
35
36#define TRANSPORTS_G2H (TRANSPORT_VIRTIO | TRANSPORT_VMCI | TRANSPORT_HYPERV)
37#define TRANSPORTS_H2G (TRANSPORT_VHOST | TRANSPORT_VMCI)
38#define TRANSPORTS_LOCAL (TRANSPORT_LOOPBACK)
39
40/* Tests can either run as the client or the server */
41enum test_mode {
42 TEST_MODE_UNSET,
43 TEST_MODE_CLIENT,
44 TEST_MODE_SERVER
45};
46
47#define DEFAULT_PEER_PORT 1234
48
49/* Test runner options */
50struct test_opts {
51 enum test_mode mode;
52 unsigned int peer_cid;
53 unsigned int peer_port;
54};
55
56/* A test case definition. Test functions must print failures to stderr and
57 * terminate with exit(EXIT_FAILURE).
58 */
59struct test_case {
60 const char *name; /* human-readable name */
61
62 /* Called when test mode is TEST_MODE_CLIENT */
63 void (*run_client)(const struct test_opts *opts);
64
65 /* Called when test mode is TEST_MODE_SERVER */
66 void (*run_server)(const struct test_opts *opts);
67
68 bool skip;
69};
70
71void init_signals(void);
72unsigned int parse_cid(const char *str);
73unsigned int parse_port(const char *str);
74int vsock_connect_fd(int fd, unsigned int cid, unsigned int port);
75int vsock_connect(unsigned int cid, unsigned int port, int type);
76int vsock_accept(unsigned int cid, unsigned int port,
77 struct sockaddr_vm *clientaddrp, int type);
78int vsock_stream_connect(unsigned int cid, unsigned int port);
79int vsock_bind_try(unsigned int cid, unsigned int port, int type);
80int vsock_bind(unsigned int cid, unsigned int port, int type);
81int vsock_bind_connect(unsigned int cid, unsigned int port,
82 unsigned int bind_port, int type);
83int vsock_seqpacket_connect(unsigned int cid, unsigned int port);
84int vsock_stream_accept(unsigned int cid, unsigned int port,
85 struct sockaddr_vm *clientaddrp);
86int vsock_stream_listen(unsigned int cid, unsigned int port);
87int vsock_seqpacket_accept(unsigned int cid, unsigned int port,
88 struct sockaddr_vm *clientaddrp);
89void vsock_wait_remote_close(int fd);
90bool vsock_ioctl_int(int fd, unsigned long op, int expected);
91bool vsock_wait_sent(int fd);
92void send_buf(int fd, const void *buf, size_t len, int flags,
93 ssize_t expected_ret);
94void recv_buf(int fd, void *buf, size_t len, int flags, ssize_t expected_ret);
95void send_byte(int fd, int expected_ret, int flags);
96void recv_byte(int fd, int expected_ret, int flags);
97void run_tests(const struct test_case *test_cases,
98 const struct test_opts *opts);
99void list_tests(const struct test_case *test_cases);
100void skip_test(struct test_case *test_cases, size_t test_cases_len,
101 const char *test_id_str);
102void pick_test(struct test_case *test_cases, size_t test_cases_len,
103 const char *test_id_str);
104unsigned long hash_djb2(const void *data, size_t len);
105size_t iovec_bytes(const struct iovec *iov, size_t iovnum);
106unsigned long iovec_hash_djb2(const struct iovec *iov, size_t iovnum);
107struct iovec *alloc_test_iovec(const struct iovec *test_iovec, int iovnum);
108void free_test_iovec(const struct iovec *test_iovec,
109 struct iovec *iovec, int iovnum);
110void setsockopt_ull_check(int fd, int level, int optname,
111 unsigned long long val, char const *errmsg);
112void setsockopt_int_check(int fd, int level, int optname, int val,
113 char const *errmsg);
114void setsockopt_timeval_check(int fd, int level, int optname,
115 struct timeval val, char const *errmsg);
116void enable_so_zerocopy_check(int fd);
117void enable_so_linger(int fd, int timeout);
118int get_transports(void);
119#endif /* UTIL_H */