2 * QTest testcase for the vhost-user
4 * Copyright (c) 2014 Virtual Open Systems Sarl.
6 * This work is licensed under the terms of the GNU GPL, version 2 or later.
7 * See the COPYING file in the top-level directory.
11 #define QEMU_GLIB_COMPAT_H
15 #include "qemu/option.h"
16 #include "sysemu/char.h"
17 #include "sysemu/sysemu.h"
19 #include <linux/vhost.h>
22 #include <qemu/sockets.h>
24 /* GLIB version compatibility flags */
25 #if !GLIB_CHECK_VERSION(2, 26, 0)
26 #define G_TIME_SPAN_SECOND (G_GINT64_CONSTANT(1000000))
29 #if GLIB_CHECK_VERSION(2, 28, 0)
30 #define HAVE_MONOTONIC_TIME
33 #if GLIB_CHECK_VERSION(2, 32, 0)
34 #define HAVE_MUTEX_INIT
35 #define HAVE_COND_INIT
36 #define HAVE_THREAD_NEW
39 #define QEMU_CMD_ACCEL " -machine accel=tcg"
40 #define QEMU_CMD_MEM " -m 512 -object memory-backend-file,id=mem,size=512M,"\
41 "mem-path=%s,share=on -numa node,memdev=mem"
42 #define QEMU_CMD_CHR " -chardev socket,id=chr0,path=%s"
43 #define QEMU_CMD_NETDEV " -netdev vhost-user,id=net0,chardev=chr0,vhostforce"
44 #define QEMU_CMD_NET " -device virtio-net-pci,netdev=net0 "
45 #define QEMU_CMD_ROM " -option-rom ../pc-bios/pxe-virtio.rom"
47 #define QEMU_CMD QEMU_CMD_ACCEL QEMU_CMD_MEM QEMU_CMD_CHR \
48 QEMU_CMD_NETDEV QEMU_CMD_NET QEMU_CMD_ROM
50 #define HUGETLBFS_MAGIC 0x958458f6
52 /*********** FROM hw/virtio/vhost-user.c *************************************/
54 #define VHOST_MEMORY_MAX_NREGIONS 8
56 typedef enum VhostUserRequest {
58 VHOST_USER_GET_FEATURES = 1,
59 VHOST_USER_SET_FEATURES = 2,
60 VHOST_USER_SET_OWNER = 3,
61 VHOST_USER_RESET_OWNER = 4,
62 VHOST_USER_SET_MEM_TABLE = 5,
63 VHOST_USER_SET_LOG_BASE = 6,
64 VHOST_USER_SET_LOG_FD = 7,
65 VHOST_USER_SET_VRING_NUM = 8,
66 VHOST_USER_SET_VRING_ADDR = 9,
67 VHOST_USER_SET_VRING_BASE = 10,
68 VHOST_USER_GET_VRING_BASE = 11,
69 VHOST_USER_SET_VRING_KICK = 12,
70 VHOST_USER_SET_VRING_CALL = 13,
71 VHOST_USER_SET_VRING_ERR = 14,
75 typedef struct VhostUserMemoryRegion {
76 uint64_t guest_phys_addr;
78 uint64_t userspace_addr;
79 } VhostUserMemoryRegion;
81 typedef struct VhostUserMemory {
84 VhostUserMemoryRegion regions[VHOST_MEMORY_MAX_NREGIONS];
87 typedef struct VhostUserMsg {
88 VhostUserRequest request;
90 #define VHOST_USER_VERSION_MASK (0x3)
91 #define VHOST_USER_REPLY_MASK (0x1<<2)
93 uint32_t size; /* the following payload size */
96 struct vhost_vring_state state;
97 struct vhost_vring_addr addr;
98 VhostUserMemory memory;
100 } QEMU_PACKED VhostUserMsg;
102 static VhostUserMsg m __attribute__ ((unused));
103 #define VHOST_USER_HDR_SIZE (sizeof(m.request) \
107 #define VHOST_USER_PAYLOAD_SIZE (sizeof(m) - VHOST_USER_HDR_SIZE)
109 /* The version of the protocol we support */
110 #define VHOST_USER_VERSION (0x1)
111 /*****************************************************************************/
113 int fds_num = 0, fds[VHOST_MEMORY_MAX_NREGIONS];
114 static VhostUserMemory memory;
115 static GMutex *data_mutex;
116 static GCond *data_cond;
118 static gint64 _get_time(void)
120 #ifdef HAVE_MONOTONIC_TIME
121 return g_get_monotonic_time();
124 g_get_current_time(&time);
126 return time.tv_sec * G_TIME_SPAN_SECOND + time.tv_usec;
130 static GMutex *_mutex_new(void)
134 #ifdef HAVE_MUTEX_INIT
135 mutex = g_new(GMutex, 1);
138 mutex = g_mutex_new();
144 static void _mutex_free(GMutex *mutex)
146 #ifdef HAVE_MUTEX_INIT
147 g_mutex_clear(mutex);
154 static GCond *_cond_new(void)
158 #ifdef HAVE_COND_INIT
159 cond = g_new(GCond, 1);
168 static gboolean _cond_wait_until(GCond *cond, GMutex *mutex, gint64 end_time)
170 gboolean ret = FALSE;
171 #ifdef HAVE_COND_INIT
172 ret = g_cond_wait_until(cond, mutex, end_time);
174 GTimeVal time = { end_time / G_TIME_SPAN_SECOND,
175 end_time % G_TIME_SPAN_SECOND };
176 ret = g_cond_timed_wait(cond, mutex, &time);
181 static void _cond_free(GCond *cond)
183 #ifdef HAVE_COND_INIT
191 static GThread *_thread_new(const gchar *name, GThreadFunc func, gpointer data)
193 GThread *thread = NULL;
194 GError *error = NULL;
195 #ifdef HAVE_THREAD_NEW
196 thread = g_thread_try_new(name, func, data, &error);
198 thread = g_thread_create(func, data, TRUE, &error);
203 static void read_guest_mem(void)
209 g_mutex_lock(data_mutex);
211 end_time = _get_time() + 5 * G_TIME_SPAN_SECOND;
213 if (!_cond_wait_until(data_cond, data_mutex, end_time)) {
214 /* timeout has passed */
220 /* check for sanity */
221 g_assert_cmpint(fds_num, >, 0);
222 g_assert_cmpint(fds_num, ==, memory.nregions);
224 /* iterate all regions */
225 for (i = 0; i < fds_num; i++) {
227 /* We'll check only the region statring at 0x0*/
228 if (memory.regions[i].guest_phys_addr != 0x0) {
232 g_assert_cmpint(memory.regions[i].memory_size, >, 1024);
234 guest_mem = mmap(0, memory.regions[i].memory_size,
235 PROT_READ | PROT_WRITE, MAP_SHARED, fds[i], 0);
237 for (j = 0; j < 256; j++) {
238 uint32_t a = readl(memory.regions[i].guest_phys_addr + j*4);
239 uint32_t b = guest_mem[j];
241 g_assert_cmpint(a, ==, b);
244 munmap(guest_mem, memory.regions[i].memory_size);
247 g_assert_cmpint(1, ==, 1);
248 g_mutex_unlock(data_mutex);
251 static void *thread_function(void *data)
254 loop = g_main_loop_new(NULL, FALSE);
255 g_main_loop_run(loop);
259 static int chr_can_read(void *opaque)
261 return VHOST_USER_HDR_SIZE;
264 static void chr_read(void *opaque, const uint8_t *buf, int size)
266 CharDriverState *chr = opaque;
268 uint8_t *p = (uint8_t *) &msg;
271 if (size != VHOST_USER_HDR_SIZE) {
272 g_test_message("Wrong message size received %d\n", size);
276 g_mutex_lock(data_mutex);
277 memcpy(p, buf, VHOST_USER_HDR_SIZE);
280 p += VHOST_USER_HDR_SIZE;
281 qemu_chr_fe_read_all(chr, p, msg.size);
284 switch (msg.request) {
285 case VHOST_USER_GET_FEATURES:
286 /* send back features to qemu */
287 msg.flags |= VHOST_USER_REPLY_MASK;
288 msg.size = sizeof(m.u64);
290 p = (uint8_t *) &msg;
291 qemu_chr_fe_write_all(chr, p, VHOST_USER_HDR_SIZE + msg.size);
294 case VHOST_USER_GET_VRING_BASE:
295 /* send back vring base to qemu */
296 msg.flags |= VHOST_USER_REPLY_MASK;
297 msg.size = sizeof(m.state);
299 p = (uint8_t *) &msg;
300 qemu_chr_fe_write_all(chr, p, VHOST_USER_HDR_SIZE + msg.size);
303 case VHOST_USER_SET_MEM_TABLE:
304 /* received the mem table */
305 memcpy(&memory, &msg.memory, sizeof(msg.memory));
306 fds_num = qemu_chr_fe_get_msgfds(chr, fds, sizeof(fds) / sizeof(int));
308 /* signal the test that it can continue */
309 g_cond_signal(data_cond);
312 case VHOST_USER_SET_VRING_KICK:
313 case VHOST_USER_SET_VRING_CALL:
315 qemu_chr_fe_get_msgfds(chr, &fd, 1);
317 * This is a non-blocking eventfd.
318 * The receive function forces it to be blocking,
319 * so revert it back to non-blocking.
321 qemu_set_nonblock(fd);
326 g_mutex_unlock(data_mutex);
329 static const char *init_hugepagefs(void)
335 path = getenv("QTEST_HUGETLBFS_PATH");
340 if (access(path, R_OK | W_OK | X_OK)) {
341 g_test_message("access on path (%s): %s\n", path, strerror(errno));
346 ret = statfs(path, &fs);
347 } while (ret != 0 && errno == EINTR);
350 g_test_message("statfs on path (%s): %s\n", path, strerror(errno));
354 if (fs.f_type != HUGETLBFS_MAGIC) {
355 g_test_message("Warning: path not on HugeTLBFS: %s\n", path);
362 int main(int argc, char **argv)
364 QTestState *s = NULL;
365 CharDriverState *chr = NULL;
366 const char *hugefs = 0;
367 char *socket_path = 0;
372 g_test_init(&argc, &argv, NULL);
374 module_call_init(MODULE_INIT_QOM);
376 hugefs = init_hugepagefs();
381 socket_path = g_strdup_printf("/tmp/vhost-%d.sock", getpid());
383 /* create char dev and add read handlers */
384 qemu_add_opts(&qemu_chardev_opts);
385 chr_path = g_strdup_printf("unix:%s,server,nowait", socket_path);
386 chr = qemu_chr_new("chr0", chr_path, NULL);
388 qemu_chr_add_handlers(chr, chr_can_read, chr_read, NULL, chr);
390 /* run the main loop thread so the chardev may operate */
391 data_mutex = _mutex_new();
392 data_cond = _cond_new();
393 _thread_new(NULL, thread_function, NULL);
395 qemu_cmd = g_strdup_printf(QEMU_CMD, hugefs, socket_path);
396 s = qtest_start(qemu_cmd);
399 qtest_add_func("/vhost-user/read-guest-mem", read_guest_mem);
410 _cond_free(data_cond);
411 _mutex_free(data_mutex);