+static TestServer *test_server_new(const gchar *name)
+{
+ TestServer *server = g_new0(TestServer, 1);
+
+ server->socket_path = g_strdup_printf("%s/%s.sock", tmpfs, name);
+ server->mig_path = g_strdup_printf("%s/%s.mig", tmpfs, name);
+ server->chr_name = g_strdup_printf("chr-%s", name);
+
+ g_mutex_init(&server->data_mutex);
+ g_cond_init(&server->data_cond);
+
+ server->log_fd = -1;
+
+ return server;
+}
+
+static void test_server_create_chr(TestServer *server, const gchar *opt)
+{
+ gchar *chr_path;
+
+ chr_path = g_strdup_printf("unix:%s%s", server->socket_path, opt);
+ 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);
+}
+
+static void test_server_listen(TestServer *server)
+{
+ test_server_create_chr(server, ",server,nowait");
+}
+
+static inline void test_server_connect(TestServer *server)
+{
+ test_server_create_chr(server, ",reconnect=1");
+}
+
+#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, chr_opts, extra, ...) \
+ g_strdup_printf(QEMU_CMD extra, (mem), (mem), (root), (s)->chr_name, \
+ (s)->socket_path, (chr_opts), (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;
+
+ test_server_listen(s);
+ test_server_listen(dest);
+
+ 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;
+}
+
+#ifdef CONFIG_HAS_GLIB_SUBPROCESS_TESTS
+static void wait_for_rings_started(TestServer *s, size_t count)
+{
+ gint64 end_time;
+
+ g_mutex_lock(&s->data_mutex);
+ end_time = g_get_monotonic_time() + 5 * G_TIME_SPAN_SECOND;
+ while (ctpop64(s->rings) != count) {
+ if (!g_cond_wait_until(&s->data_cond, &s->data_mutex, end_time)) {
+ /* timeout has passed */
+ g_assert_cmpint(ctpop64(s->rings), ==, count);
+ break;
+ }
+ }
+
+ g_mutex_unlock(&s->data_mutex);
+}
+
+static gboolean
+reconnect_cb(gpointer user_data)
+{
+ TestServer *s = user_data;
+
+ qemu_chr_disconnect(s->chr);
+
+ return FALSE;
+}
+
+static gpointer
+connect_thread(gpointer data)
+{
+ TestServer *s = data;
+
+ /* wait for qemu to start before first try, to avoid extra warnings */
+ g_usleep(G_USEC_PER_SEC);
+ test_server_connect(s);
+
+ return NULL;
+}
+
+static void test_reconnect_subprocess(void)
+{
+ TestServer *s = test_server_new("reconnect");
+ char *cmd;
+
+ g_thread_new("connect", connect_thread, s);
+ cmd = GET_QEMU_CMDE(s, 2, ",server", "");
+ qtest_start(cmd);
+ g_free(cmd);
+
+ wait_for_fds(s);
+ wait_for_rings_started(s, 2);
+
+ /* reconnect */
+ s->fds_num = 0;
+ s->rings = 0;
+ g_idle_add(reconnect_cb, s);
+ wait_for_fds(s);
+ wait_for_rings_started(s, 2);
+
+ qtest_end();
+ test_server_free(s);
+ return;
+}
+
+static void test_reconnect(void)
+{
+ gchar *path = g_strdup_printf("/%s/vhost-user/reconnect/subprocess",
+ qtest_get_arch());
+ g_test_trap_subprocess(path, 0, 0);
+ g_test_trap_assert_passed();
+}
+#endif
+
projects / qemu.git / blobdiff