*
*/
+#include "qemu/osdep.h"
#include <glib.h>
#include "libqtest.h"
#include "qemu/option.h"
+#include "qemu/range.h"
#include "sysemu/char.h"
#include "sysemu/sysemu.h"
#endif
#define QEMU_CMD_ACCEL " -machine accel=tcg"
-#define QEMU_CMD_MEM " -m 512 -object memory-backend-file,id=mem,size=512M,"\
+#define QEMU_CMD_MEM " -m %d -object memory-backend-file,id=mem,size=%dM,"\
"mem-path=%s,share=on -numa node,memdev=mem"
-#define QEMU_CMD_CHR " -chardev socket,id=chr0,path=%s"
-#define QEMU_CMD_NETDEV " -netdev vhost-user,id=net0,chardev=chr0,vhostforce"
-#define QEMU_CMD_NET " -device virtio-net-pci,netdev=net0 "
-#define QEMU_CMD_ROM " -option-rom ../pc-bios/pxe-virtio.rom"
+#define QEMU_CMD_CHR " -chardev socket,id=%s,path=%s"
+#define QEMU_CMD_NETDEV " -netdev vhost-user,id=net0,chardev=%s,vhostforce"
+#define QEMU_CMD_NET " -device virtio-net-pci,netdev=net0,romfile=./pc-bios/pxe-virtio.rom"
#define QEMU_CMD QEMU_CMD_ACCEL QEMU_CMD_MEM QEMU_CMD_CHR \
- QEMU_CMD_NETDEV QEMU_CMD_NET QEMU_CMD_ROM
+ QEMU_CMD_NETDEV QEMU_CMD_NET
#define HUGETLBFS_MAGIC 0x958458f6
#define VHOST_MEMORY_MAX_NREGIONS 8
#define VHOST_USER_F_PROTOCOL_FEATURES 30
+#define VHOST_USER_PROTOCOL_F_LOG_SHMFD 1
+
+#define VHOST_LOG_PAGE 0x1000
typedef enum VhostUserRequest {
VHOST_USER_NONE = 0,
VHOST_USER_GET_FEATURES = 1,
VHOST_USER_SET_FEATURES = 2,
VHOST_USER_SET_OWNER = 3,
- VHOST_USER_RESET_DEVICE = 4,
+ VHOST_USER_RESET_OWNER = 4,
VHOST_USER_SET_MEM_TABLE = 5,
VHOST_USER_SET_LOG_BASE = 6,
VHOST_USER_SET_LOG_FD = 7,
VHOST_USER_SET_VRING_ERR = 14,
VHOST_USER_GET_PROTOCOL_FEATURES = 15,
VHOST_USER_SET_PROTOCOL_FEATURES = 16,
+ VHOST_USER_SET_VRING_ENABLE = 18,
VHOST_USER_MAX
} VhostUserRequest;
VhostUserMemoryRegion regions[VHOST_MEMORY_MAX_NREGIONS];
} VhostUserMemory;
+typedef struct VhostUserLog {
+ uint64_t mmap_size;
+ uint64_t mmap_offset;
+} VhostUserLog;
+
typedef struct VhostUserMsg {
VhostUserRequest request;
uint32_t flags;
uint32_t size; /* the following payload size */
union {
+#define VHOST_USER_VRING_IDX_MASK (0xff)
+#define VHOST_USER_VRING_NOFD_MASK (0x1<<8)
uint64_t u64;
struct vhost_vring_state state;
struct vhost_vring_addr addr;
VhostUserMemory memory;
- };
+ VhostUserLog log;
+ } payload;
} QEMU_PACKED VhostUserMsg;
static VhostUserMsg m __attribute__ ((unused));
#define VHOST_USER_VERSION (0x1)
/*****************************************************************************/
-int fds_num = 0, fds[VHOST_MEMORY_MAX_NREGIONS];
-static VhostUserMemory memory;
-static CompatGMutex data_mutex;
-static CompatGCond data_cond;
+typedef struct TestServer {
+ gchar *socket_path;
+ gchar *mig_path;
+ gchar *chr_name;
+ CharDriverState *chr;
+ int fds_num;
+ int fds[VHOST_MEMORY_MAX_NREGIONS];
+ VhostUserMemory memory;
+ GMutex data_mutex;
+ GCond data_cond;
+ int log_fd;
+ uint64_t rings;
+} TestServer;
#if !GLIB_CHECK_VERSION(2, 32, 0)
static gboolean g_cond_wait_until(CompatGCond cond, CompatGMutex mutex,
}
#endif
-static void wait_for_fds(void)
+static const char *tmpfs;
+static const char *root;
+
+static void wait_for_fds(TestServer *s)
{
gint64 end_time;
- g_mutex_lock(&data_mutex);
+ g_mutex_lock(&s->data_mutex);
end_time = g_get_monotonic_time() + 5 * G_TIME_SPAN_SECOND;
- while (!fds_num) {
- if (!g_cond_wait_until(&data_cond, &data_mutex, end_time)) {
+ while (!s->fds_num) {
+ if (!g_cond_wait_until(&s->data_cond, &s->data_mutex, end_time)) {
/* timeout has passed */
- g_assert(fds_num);
+ g_assert(s->fds_num);
break;
}
}
/* check for sanity */
- g_assert_cmpint(fds_num, >, 0);
- g_assert_cmpint(fds_num, ==, memory.nregions);
+ g_assert_cmpint(s->fds_num, >, 0);
+ g_assert_cmpint(s->fds_num, ==, s->memory.nregions);
- g_mutex_unlock(&data_mutex);
+ g_mutex_unlock(&s->data_mutex);
}
-static void read_guest_mem(void)
+static void read_guest_mem(const void *data)
{
+ TestServer *s = (void *)data;
uint32_t *guest_mem;
int i, j;
size_t size;
- wait_for_fds();
+ wait_for_fds(s);
- g_mutex_lock(&data_mutex);
+ g_mutex_lock(&s->data_mutex);
/* iterate all regions */
- for (i = 0; i < fds_num; i++) {
+ for (i = 0; i < s->fds_num; i++) {
/* We'll check only the region statring at 0x0*/
- if (memory.regions[i].guest_phys_addr != 0x0) {
+ if (s->memory.regions[i].guest_phys_addr != 0x0) {
continue;
}
- g_assert_cmpint(memory.regions[i].memory_size, >, 1024);
+ g_assert_cmpint(s->memory.regions[i].memory_size, >, 1024);
- size = memory.regions[i].memory_size + memory.regions[i].mmap_offset;
+ size = s->memory.regions[i].memory_size +
+ s->memory.regions[i].mmap_offset;
guest_mem = mmap(0, size, PROT_READ | PROT_WRITE,
- MAP_SHARED, fds[i], 0);
+ MAP_SHARED, s->fds[i], 0);
g_assert(guest_mem != MAP_FAILED);
- guest_mem += (memory.regions[i].mmap_offset / sizeof(*guest_mem));
+ guest_mem += (s->memory.regions[i].mmap_offset / sizeof(*guest_mem));
for (j = 0; j < 256; j++) {
- uint32_t a = readl(memory.regions[i].guest_phys_addr + j*4);
+ uint32_t a = readl(s->memory.regions[i].guest_phys_addr + j*4);
uint32_t b = guest_mem[j];
g_assert_cmpint(a, ==, b);
}
- munmap(guest_mem, memory.regions[i].memory_size);
+ munmap(guest_mem, s->memory.regions[i].memory_size);
}
- g_assert_cmpint(1, ==, 1);
- g_mutex_unlock(&data_mutex);
+ g_mutex_unlock(&s->data_mutex);
}
static void *thread_function(void *data)
{
- GMainLoop *loop;
- loop = g_main_loop_new(NULL, FALSE);
+ GMainLoop *loop = data;
g_main_loop_run(loop);
return NULL;
}
static void chr_read(void *opaque, const uint8_t *buf, int size)
{
- CharDriverState *chr = opaque;
+ TestServer *s = opaque;
+ CharDriverState *chr = s->chr;
VhostUserMsg msg;
uint8_t *p = (uint8_t *) &msg;
int fd;
return;
}
- g_mutex_lock(&data_mutex);
+ g_mutex_lock(&s->data_mutex);
memcpy(p, buf, VHOST_USER_HDR_SIZE);
if (msg.size) {
p += VHOST_USER_HDR_SIZE;
- qemu_chr_fe_read_all(chr, p, msg.size);
+ g_assert_cmpint(qemu_chr_fe_read_all(chr, p, msg.size), ==, msg.size);
}
switch (msg.request) {
case VHOST_USER_GET_FEATURES:
/* send back features to qemu */
msg.flags |= VHOST_USER_REPLY_MASK;
- msg.size = sizeof(m.u64);
- msg.u64 = 0x1ULL << VHOST_USER_F_PROTOCOL_FEATURES;
+ msg.size = sizeof(m.payload.u64);
+ msg.payload.u64 = 0x1ULL << VHOST_F_LOG_ALL |
+ 0x1ULL << VHOST_USER_F_PROTOCOL_FEATURES;
p = (uint8_t *) &msg;
qemu_chr_fe_write_all(chr, p, VHOST_USER_HDR_SIZE + msg.size);
break;
case VHOST_USER_SET_FEATURES:
- g_assert_cmpint(msg.u64 & (0x1ULL << VHOST_USER_F_PROTOCOL_FEATURES),
+ g_assert_cmpint(msg.payload.u64 & (0x1ULL << VHOST_USER_F_PROTOCOL_FEATURES),
!=, 0ULL);
break;
case VHOST_USER_GET_PROTOCOL_FEATURES:
/* send back features to qemu */
msg.flags |= VHOST_USER_REPLY_MASK;
- msg.size = sizeof(m.u64);
- msg.u64 = 0;
+ msg.size = sizeof(m.payload.u64);
+ msg.payload.u64 = 1 << VHOST_USER_PROTOCOL_F_LOG_SHMFD;
p = (uint8_t *) &msg;
qemu_chr_fe_write_all(chr, p, VHOST_USER_HDR_SIZE + msg.size);
break;
case VHOST_USER_GET_VRING_BASE:
/* send back vring base to qemu */
msg.flags |= VHOST_USER_REPLY_MASK;
- msg.size = sizeof(m.state);
- msg.state.num = 0;
+ msg.size = sizeof(m.payload.state);
+ msg.payload.state.num = 0;
p = (uint8_t *) &msg;
qemu_chr_fe_write_all(chr, p, VHOST_USER_HDR_SIZE + msg.size);
+
+ assert(msg.payload.state.index < 2);
+ s->rings &= ~(0x1ULL << msg.payload.state.index);
break;
case VHOST_USER_SET_MEM_TABLE:
/* received the mem table */
- memcpy(&memory, &msg.memory, sizeof(msg.memory));
- fds_num = qemu_chr_fe_get_msgfds(chr, fds, sizeof(fds) / sizeof(int));
+ memcpy(&s->memory, &msg.payload.memory, sizeof(msg.payload.memory));
+ s->fds_num = qemu_chr_fe_get_msgfds(chr, s->fds, G_N_ELEMENTS(s->fds));
/* signal the test that it can continue */
- g_cond_signal(&data_cond);
+ g_cond_signal(&s->data_cond);
break;
case VHOST_USER_SET_VRING_KICK:
*/
qemu_set_nonblock(fd);
break;
+
+ case VHOST_USER_SET_LOG_BASE:
+ if (s->log_fd != -1) {
+ close(s->log_fd);
+ s->log_fd = -1;
+ }
+ qemu_chr_fe_get_msgfds(chr, &s->log_fd, 1);
+ msg.flags |= VHOST_USER_REPLY_MASK;
+ msg.size = 0;
+ p = (uint8_t *) &msg;
+ qemu_chr_fe_write_all(chr, p, VHOST_USER_HDR_SIZE);
+
+ g_cond_signal(&s->data_cond);
+ break;
+
+ case VHOST_USER_SET_VRING_BASE:
+ assert(msg.payload.state.index < 2);
+ s->rings |= 0x1ULL << msg.payload.state.index;
+ break;
+
default:
break;
}
- g_mutex_unlock(&data_mutex);
+
+ g_mutex_unlock(&s->data_mutex);
}
static const char *init_hugepagefs(const char *path)
return path;
}
+static TestServer *test_server_new(const gchar *name)
+{
+ TestServer *server = g_new0(TestServer, 1);
+ gchar *chr_path;
+
+ server->socket_path = g_strdup_printf("%s/%s.sock", tmpfs, name);
+ server->mig_path = g_strdup_printf("%s/%s.mig", tmpfs, name);
+
+ chr_path = g_strdup_printf("unix:%s,server,nowait", server->socket_path);
+ server->chr_name = g_strdup_printf("chr-%s", name);
+ server->chr = qemu_chr_new(server->chr_name, chr_path, NULL);
+ g_free(chr_path);
+
+ qemu_chr_add_handlers(server->chr, chr_can_read, chr_read, NULL, server);
+
+ g_mutex_init(&server->data_mutex);
+ g_cond_init(&server->data_cond);
+
+ server->log_fd = -1;
+
+ return server;
+}
+
+#define GET_QEMU_CMD(s) \
+ g_strdup_printf(QEMU_CMD, 512, 512, (root), (s)->chr_name, \
+ (s)->socket_path, (s)->chr_name)
+
+#define GET_QEMU_CMDE(s, mem, extra, ...) \
+ g_strdup_printf(QEMU_CMD extra, (mem), (mem), (root), (s)->chr_name, \
+ (s)->socket_path, (s)->chr_name, ##__VA_ARGS__)
+
+static gboolean _test_server_free(TestServer *server)
+{
+ int i;
+
+ qemu_chr_delete(server->chr);
+
+ for (i = 0; i < server->fds_num; i++) {
+ close(server->fds[i]);
+ }
+
+ if (server->log_fd != -1) {
+ close(server->log_fd);
+ }
+
+ unlink(server->socket_path);
+ g_free(server->socket_path);
+
+ unlink(server->mig_path);
+ g_free(server->mig_path);
+
+ g_free(server->chr_name);
+ g_free(server);
+
+ return FALSE;
+}
+
+static void test_server_free(TestServer *server)
+{
+ g_idle_add((GSourceFunc)_test_server_free, server);
+}
+
+static void wait_for_log_fd(TestServer *s)
+{
+ gint64 end_time;
+
+ g_mutex_lock(&s->data_mutex);
+ end_time = g_get_monotonic_time() + 5 * G_TIME_SPAN_SECOND;
+ while (s->log_fd == -1) {
+ if (!g_cond_wait_until(&s->data_cond, &s->data_mutex, end_time)) {
+ /* timeout has passed */
+ g_assert(s->log_fd != -1);
+ break;
+ }
+ }
+
+ g_mutex_unlock(&s->data_mutex);
+}
+
+static void write_guest_mem(TestServer *s, uint32_t seed)
+{
+ uint32_t *guest_mem;
+ int i, j;
+ size_t size;
+
+ wait_for_fds(s);
+
+ /* iterate all regions */
+ for (i = 0; i < s->fds_num; i++) {
+
+ /* We'll write only the region statring at 0x0 */
+ if (s->memory.regions[i].guest_phys_addr != 0x0) {
+ continue;
+ }
+
+ g_assert_cmpint(s->memory.regions[i].memory_size, >, 1024);
+
+ size = s->memory.regions[i].memory_size +
+ s->memory.regions[i].mmap_offset;
+
+ guest_mem = mmap(0, size, PROT_READ | PROT_WRITE,
+ MAP_SHARED, s->fds[i], 0);
+
+ g_assert(guest_mem != MAP_FAILED);
+ guest_mem += (s->memory.regions[i].mmap_offset / sizeof(*guest_mem));
+
+ for (j = 0; j < 256; j++) {
+ guest_mem[j] = seed + j;
+ }
+
+ munmap(guest_mem, s->memory.regions[i].memory_size);
+ break;
+ }
+}
+
+static guint64 get_log_size(TestServer *s)
+{
+ guint64 log_size = 0;
+ int i;
+
+ for (i = 0; i < s->memory.nregions; ++i) {
+ VhostUserMemoryRegion *reg = &s->memory.regions[i];
+ guint64 last = range_get_last(reg->guest_phys_addr,
+ reg->memory_size);
+ log_size = MAX(log_size, last / (8 * VHOST_LOG_PAGE) + 1);
+ }
+
+ return log_size;
+}
+
+typedef struct TestMigrateSource {
+ GSource source;
+ TestServer *src;
+ TestServer *dest;
+} TestMigrateSource;
+
+static gboolean
+test_migrate_source_check(GSource *source)
+{
+ TestMigrateSource *t = (TestMigrateSource *)source;
+ gboolean overlap = t->src->rings && t->dest->rings;
+
+ g_assert(!overlap);
+
+ return FALSE;
+}
+
+#if !GLIB_CHECK_VERSION(2,36,0)
+/* this callback is unnecessary with glib >2.36, the default
+ * prepare for the source does the same */
+static gboolean
+test_migrate_source_prepare(GSource *source, gint *timeout)
+{
+ *timeout = -1;
+ return FALSE;
+}
+#endif
+
+GSourceFuncs test_migrate_source_funcs = {
+#if !GLIB_CHECK_VERSION(2,36,0)
+ .prepare = test_migrate_source_prepare,
+#endif
+ .check = test_migrate_source_check,
+};
+
+static void test_migrate(void)
+{
+ TestServer *s = test_server_new("src");
+ TestServer *dest = test_server_new("dest");
+ char *uri = g_strdup_printf("%s%s", "unix:", dest->mig_path);
+ QTestState *global = global_qtest, *from, *to;
+ GSource *source;
+ gchar *cmd;
+ QDict *rsp;
+ guint8 *log;
+ guint64 size;
+
+ cmd = GET_QEMU_CMDE(s, 2, "");
+ from = qtest_start(cmd);
+ g_free(cmd);
+
+ wait_for_fds(s);
+ size = get_log_size(s);
+ g_assert_cmpint(size, ==, (2 * 1024 * 1024) / (VHOST_LOG_PAGE * 8));
+
+ cmd = GET_QEMU_CMDE(dest, 2, " -incoming %s", uri);
+ to = qtest_init(cmd);
+ g_free(cmd);
+
+ source = g_source_new(&test_migrate_source_funcs,
+ sizeof(TestMigrateSource));
+ ((TestMigrateSource *)source)->src = s;
+ ((TestMigrateSource *)source)->dest = dest;
+ g_source_attach(source, NULL);
+
+ /* slow down migration to have time to fiddle with log */
+ /* TODO: qtest could learn to break on some places */
+ rsp = qmp("{ 'execute': 'migrate_set_speed',"
+ "'arguments': { 'value': 10 } }");
+ g_assert(qdict_haskey(rsp, "return"));
+ QDECREF(rsp);
+
+ cmd = g_strdup_printf("{ 'execute': 'migrate',"
+ "'arguments': { 'uri': '%s' } }",
+ uri);
+ rsp = qmp(cmd);
+ g_free(cmd);
+ g_assert(qdict_haskey(rsp, "return"));
+ QDECREF(rsp);
+
+ wait_for_log_fd(s);
+
+ log = mmap(0, size, PROT_READ | PROT_WRITE, MAP_SHARED, s->log_fd, 0);
+ g_assert(log != MAP_FAILED);
+
+ /* modify first page */
+ write_guest_mem(s, 0x42);
+ log[0] = 1;
+ munmap(log, size);
+
+ /* speed things up */
+ rsp = qmp("{ 'execute': 'migrate_set_speed',"
+ "'arguments': { 'value': 0 } }");
+ g_assert(qdict_haskey(rsp, "return"));
+ QDECREF(rsp);
+
+ qmp_eventwait("STOP");
+
+ global_qtest = to;
+ qmp_eventwait("RESUME");
+
+ read_guest_mem(dest);
+
+ g_source_destroy(source);
+ g_source_unref(source);
+
+ qtest_quit(to);
+ test_server_free(dest);
+ qtest_quit(from);
+ test_server_free(s);
+ g_free(uri);
+
+ global_qtest = global;
+}
+
int main(int argc, char **argv)
{
QTestState *s = NULL;
- CharDriverState *chr = NULL;
+ TestServer *server = NULL;
const char *hugefs;
- char *socket_path = 0;
- char *qemu_cmd = 0;
- char *chr_path = 0;
+ char *qemu_cmd = NULL;
int ret;
char template[] = "/tmp/vhost-test-XXXXXX";
- const char *tmpfs;
- const char *root;
+ GMainLoop *loop;
+ GThread *thread;
g_test_init(&argc, &argv, NULL);
module_call_init(MODULE_INIT_QOM);
+ qemu_add_opts(&qemu_chardev_opts);
tmpfs = mkdtemp(template);
if (!tmpfs) {
- g_test_message("mkdtemp on path (%s): %s\n", template, strerror(errno));
+ g_test_message("mkdtemp on path (%s): %s\n", template, strerror(errno));
}
g_assert(tmpfs);
root = tmpfs;
}
- socket_path = g_strdup_printf("%s/vhost.sock", tmpfs);
-
- /* create char dev and add read handlers */
- qemu_add_opts(&qemu_chardev_opts);
- chr_path = g_strdup_printf("unix:%s,server,nowait", socket_path);
- chr = qemu_chr_new("chr0", chr_path, NULL);
- g_free(chr_path);
- qemu_chr_add_handlers(chr, chr_can_read, chr_read, NULL, chr);
+ server = test_server_new("test");
+ loop = g_main_loop_new(NULL, FALSE);
/* run the main loop thread so the chardev may operate */
- g_mutex_init(&data_mutex);
- g_cond_init(&data_cond);
- g_thread_new(NULL, thread_function, NULL);
+ thread = g_thread_new(NULL, thread_function, loop);
+
+ qemu_cmd = GET_QEMU_CMD(server);
- qemu_cmd = g_strdup_printf(QEMU_CMD, root, socket_path);
s = qtest_start(qemu_cmd);
g_free(qemu_cmd);
- qtest_add_func("/vhost-user/read-guest-mem", read_guest_mem);
+ qtest_add_data_func("/vhost-user/read-guest-mem", server, read_guest_mem);
+ qtest_add_func("/vhost-user/migrate", test_migrate);
ret = g_test_run();
}
/* cleanup */
- unlink(socket_path);
- g_free(socket_path);
+ test_server_free(server);
+
+ /* finish the helper thread and dispatch pending sources */
+ g_main_loop_quit(loop);
+ g_thread_join(thread);
+ while (g_main_context_pending(NULL)) {
+ g_main_context_iteration (NULL, TRUE);
+ }
+ g_main_loop_unref(loop);
ret = rmdir(tmpfs);
if (ret != 0) {
projects / qemu.git / blobdiff