58 	struct drbd_connection *connection;  in count_objects()  local
66 	for_each_connection(connection, resource)  in count_objects()
91 		state_change->connections[n].connection = NULL;  in alloc_state_change()
100 	struct drbd_connection *connection;  in remember_old_state()  local
124 	for_each_connection(connection, resource) {  in remember_old_state()
125 		kref_get(&connection->kref);  in remember_old_state()
126 		connection_state_change->connection = connection;  in remember_old_state()
128 			connection->cstate;  in remember_old_state()
130 			conn_highest_peer(connection);  in remember_old_state()
143 		for_each_connection(connection, resource) {  in remember_old_state()
146 			peer_device = conn_peer_device(connection, device->vnr);  in remember_old_state()
196 		struct drbd_connection *connection =  in remember_new_state()  local
197 			connection_state_change->connection;  in remember_new_state()
199 		connection_state_change->cstate[NEW] = connection->cstate;  in remember_new_state()
201 			conn_highest_peer(connection);  in remember_new_state()
282 		struct drbd_connection *connection =  in forget_state_change()  local
283 			state_change->connections[n].connection;  in forget_state_change()
285 		if (connection)  in forget_state_change()
286 			kref_put(&connection->kref, drbd_destroy_connection);  in forget_state_change()
306 bool conn_all_vols_unconf(struct drbd_connection *connection)  in conn_all_vols_unconf()  argument
313 	idr_for_each_entry(&connection->peer_devices, peer_device, vnr) {  in conn_all_vols_unconf()
347 enum drbd_role conn_highest_role(struct drbd_connection *connection)  in conn_highest_role()  argument
354 	idr_for_each_entry(&connection->peer_devices, peer_device, vnr) {  in conn_highest_role()
363 enum drbd_role conn_highest_peer(struct drbd_connection *connection)  in conn_highest_peer()  argument
370 	idr_for_each_entry(&connection->peer_devices, peer_device, vnr) {  in conn_highest_peer()
379 enum drbd_disk_state conn_highest_disk(struct drbd_connection *connection)  in conn_highest_disk()  argument
386 	idr_for_each_entry(&connection->peer_devices, peer_device, vnr) {  in conn_highest_disk()
395 enum drbd_disk_state conn_lowest_disk(struct drbd_connection *connection)  in conn_lowest_disk()  argument
402 	idr_for_each_entry(&connection->peer_devices, peer_device, vnr) {  in conn_lowest_disk()
411 enum drbd_disk_state conn_highest_pdsk(struct drbd_connection *connection)  in conn_highest_pdsk()  argument
418 	idr_for_each_entry(&connection->peer_devices, peer_device, vnr) {  in conn_highest_pdsk()
427 enum drbd_conns conn_lowest_conn(struct drbd_connection *connection)  in conn_lowest_conn()  argument
434 	idr_for_each_entry(&connection->peer_devices, peer_device, vnr) {  in conn_lowest_conn()
443 static bool no_peer_wf_report_params(struct drbd_connection *connection)  in no_peer_wf_report_params()  argument
450 	idr_for_each_entry(&connection->peer_devices, peer_device, vnr)  in no_peer_wf_report_params()
460 static void wake_up_all_devices(struct drbd_connection *connection)  in wake_up_all_devices()  argument
466 	idr_for_each_entry(&connection->peer_devices, peer_device, vnr)  in wake_up_all_devices()
554 			rv = is_valid_soft_transition(os, ns, first_peer_device(device)->connection);  in _req_st_cond()
603 			rv = is_valid_soft_transition(os, ns, first_peer_device(device)->connection);  in drbd_req_state()
637 		D_ASSERT(device, current != first_peer_device(device)->connection->worker.task);  in drbd_req_state()
813 static void conn_pr_state_change(struct drbd_connection *connection, union drbd_state os, union drb…  in conn_pr_state_change()  argument
827 		drbd_info(connection, "%s\n", pb);  in conn_pr_state_change()
852 	nc = rcu_dereference(first_peer_device(device)->connection->net_conf);  in is_valid_state()
857 			else if (conn_highest_peer(first_peer_device(device)->connection) == R_PRIMARY)  in is_valid_state()
898 		  first_peer_device(device)->connection->agreed_pro_version < 88)  in is_valid_state()
926 …valid_soft_transition(union drbd_state os, union drbd_state ns, struct drbd_connection *connection)  in is_valid_soft_transition()  argument
951 	if (test_bit(STATE_SENT, &connection->flags) &&  in is_valid_soft_transition()
1241 	if (first_peer_device(device)->connection->agreed_pro_version < 90)  in set_ov_position()
1279 	struct drbd_connection *connection = peer_device ? peer_device->connection : NULL;  in _drbd_set_state()  local
1306 				rv = is_valid_soft_transition(os, ns, connection);  in _drbd_set_state()
1308 			rv = is_valid_soft_transition(os, ns, connection);  in _drbd_set_state()
1325 		conn_pr_state_change(connection, os, ns,  in _drbd_set_state()
1357 		start_new_tl_epoch(connection);  in _drbd_set_state()
1364 	    no_peer_wf_report_params(connection)) {  in _drbd_set_state()
1365 		clear_bit(STATE_SENT, &connection->flags);  in _drbd_set_state()
1366 		wake_up_all_devices(connection);  in _drbd_set_state()
1371 	wake_up(&connection->ping_wait);  in _drbd_set_state()
1459 		drbd_thread_stop_nowait(&connection->receiver);  in _drbd_set_state()
1463 		drbd_thread_stop_nowait(&connection->receiver);  in _drbd_set_state()
1468 		drbd_thread_restart_nowait(&connection->receiver);  in _drbd_set_state()
1473 		connection->connect_cnt++;  in _drbd_set_state()
1492 		drbd_queue_work(&connection->sender_work,  in _drbd_set_state()
1540 	D_ASSERT(device, current == first_peer_device(device)->connection->worker.task);  in drbd_bitmap_io_from_worker()
1575 	struct drbd_connection *connection = connection_state_change->connection;  in notify_connection_state_change()  local
1581 	notify_connection_state(skb, seq, connection, &connection_info, type);  in notify_connection_state_change()
1720 	struct drbd_connection *connection = peer_device ? peer_device->connection : NULL;  in after_state_ch()  local
1750 		if (os.conn < C_CONNECTED && conn_lowest_conn(connection) >= C_CONNECTED)  in after_state_ch()
1754 		    conn_lowest_disk(connection) == D_UP_TO_DATE)  in after_state_ch()
1758 			_tl_restart(connection, what);  in after_state_ch()
1759 			_conn_request_state(connection,  in after_state_ch()
1769 		if (resource->susp_fen && conn_lowest_conn(connection) >= C_CONNECTED) {  in after_state_ch()
1775 			idr_for_each_entry(&connection->peer_devices, peer_device, vnr)  in after_state_ch()
1785 			_tl_restart(connection, RESEND);  in after_state_ch()
1786 			_conn_request_state(connection,  in after_state_ch()
1800 	    connection->agreed_pro_version >= 96 && get_ldev(device)) {  in after_state_ch()
2047 	struct drbd_connection *connection;  member
2055 	struct drbd_connection *connection = acscw->connection;  in w_after_conn_state_ch()  local
2067 		drbd_thread_start(&connection->receiver);  in w_after_conn_state_ch()
2073 		idr_for_each_entry(&connection->peer_devices, peer_device, vnr)  in w_after_conn_state_ch()
2076 		notify_connection_state(NULL, 0, connection, NULL, NOTIFY_DESTROY);  in w_after_conn_state_ch()
2079 		mutex_lock(&connection->resource->conf_update);  in w_after_conn_state_ch()
2080 		old_conf = connection->net_conf;  in w_after_conn_state_ch()
2081 		connection->my_addr_len = 0;  in w_after_conn_state_ch()
2082 		connection->peer_addr_len = 0;  in w_after_conn_state_ch()
2083 		RCU_INIT_POINTER(connection->net_conf, NULL);  in w_after_conn_state_ch()
2084 		conn_free_crypto(connection);  in w_after_conn_state_ch()
2085 		mutex_unlock(&connection->resource->conf_update);  in w_after_conn_state_ch()
2095 			idr_for_each_entry(&connection->peer_devices, peer_device, vnr) {  in w_after_conn_state_ch()
2103 			spin_lock_irq(&connection->resource->req_lock);  in w_after_conn_state_ch()
2104 			_tl_restart(connection, CONNECTION_LOST_WHILE_PENDING);  in w_after_conn_state_ch()
2105 			_conn_request_state(connection,  in w_after_conn_state_ch()
2109 			spin_unlock_irq(&connection->resource->req_lock);  in w_after_conn_state_ch()
2112 	kref_put(&connection->kref, drbd_destroy_connection);  in w_after_conn_state_ch()
2114 	conn_md_sync(connection);  in w_after_conn_state_ch()
2119 static void conn_old_common_state(struct drbd_connection *connection, union drbd_state *pcs, enum c…  in conn_old_common_state()  argument
2127 		  .conn = connection->cstate,  in conn_old_common_state()
2133 	idr_for_each_entry(&connection->peer_devices, peer_device, vnr) {  in conn_old_common_state()
2166 conn_is_valid_transition(struct drbd_connection *connection, union drbd_state mask, union drbd_stat…  in conn_is_valid_transition()  argument
2175 	idr_for_each_entry(&connection->peer_devices, peer_device, vnr) {  in conn_is_valid_transition()
2192 					rv = is_valid_soft_transition(os, ns, connection);  in conn_is_valid_transition()
2194 				rv = is_valid_soft_transition(os, ns, connection);  in conn_is_valid_transition()
2209 conn_set_state(struct drbd_connection *connection, union drbd_state mask, union drbd_state val,  in conn_set_state()  argument
2228 		if (connection->cstate != C_WF_REPORT_PARAMS && val.conn == C_WF_REPORT_PARAMS)  in conn_set_state()
2229 			connection->last_reconnect_jif = jiffies;  in conn_set_state()
2231 		connection->cstate = val.conn;  in conn_set_state()
2235 	idr_for_each_entry(&connection->peer_devices, peer_device, vnr) {  in conn_set_state()
2272 	ns_min.susp = ns_max.susp = connection->resource->susp;  in conn_set_state()
2273 	ns_min.susp_nod = ns_max.susp_nod = connection->resource->susp_nod;  in conn_set_state()
2274 	ns_min.susp_fen = ns_max.susp_fen = connection->resource->susp_fen;  in conn_set_state()
2281 _conn_rq_cond(struct drbd_connection *connection, union drbd_state mask, union drbd_state val)  in _conn_rq_cond()  argument
2285 	if (test_and_clear_bit(CONN_WD_ST_CHG_OKAY, &connection->flags))  in _conn_rq_cond()
2288 	if (test_and_clear_bit(CONN_WD_ST_CHG_FAIL, &connection->flags))  in _conn_rq_cond()
2291 	err = conn_is_valid_transition(connection, mask, val, 0);  in _conn_rq_cond()
2292 	if (err == SS_SUCCESS && connection->cstate == C_WF_REPORT_PARAMS)  in _conn_rq_cond()
2299 _conn_request_state(struct drbd_connection *connection, union drbd_state mask, union drbd_state val,  in _conn_request_state()  argument
2304 	enum drbd_conns oc = connection->cstate;  in _conn_request_state()
2315 	rv = conn_is_valid_transition(connection, mask, val, flags);  in _conn_request_state()
2325 		spin_unlock_irq(&connection->resource->req_lock);  in _conn_request_state()
2326 		mutex_lock(&connection->cstate_mutex);  in _conn_request_state()
2329 		set_bit(CONN_WD_ST_CHG_REQ, &connection->flags);  in _conn_request_state()
2330 		if (conn_send_state_req(connection, mask, val)) {  in _conn_request_state()
2332 			clear_bit(CONN_WD_ST_CHG_REQ, &connection->flags);  in _conn_request_state()
2339 			set_bit(DISCONNECT_SENT, &connection->flags);  in _conn_request_state()
2344 		spin_lock_irq(&connection->resource->req_lock);  in _conn_request_state()
2345 		wait_event_lock_irq(connection->ping_wait,  in _conn_request_state()
2346 				(rv = _conn_rq_cond(connection, mask, val)),  in _conn_request_state()
2347 				connection->resource->req_lock);  in _conn_request_state()
2348 		clear_bit(CONN_WD_ST_CHG_REQ, &connection->flags);  in _conn_request_state()
2353 	state_change = remember_old_state(connection->resource, GFP_ATOMIC);  in _conn_request_state()
2354 	conn_old_common_state(connection, &os, &flags);  in _conn_request_state()
2356 	conn_set_state(connection, mask, val, &ns_min, &ns_max, flags);  in _conn_request_state()
2357 	conn_pr_state_change(connection, os, ns_max, flags);  in _conn_request_state()
2367 		kref_get(&connection->kref);  in _conn_request_state()
2368 		acscw->connection = connection;  in _conn_request_state()
2370 		drbd_queue_work(&connection->sender_work, &acscw->w);  in _conn_request_state()
2372 		drbd_err(connection, "Could not kmalloc an acscw\n");  in _conn_request_state()
2379 		spin_unlock_irq(&connection->resource->req_lock);  in _conn_request_state()
2381 		mutex_unlock(&connection->cstate_mutex);  in _conn_request_state()
2382 		spin_lock_irq(&connection->resource->req_lock);  in _conn_request_state()
2385 		drbd_err(connection, "State change failed: %s\n", drbd_set_st_err_str(rv));  in _conn_request_state()
2386 		drbd_err(connection, " mask = 0x%x val = 0x%x\n", mask.i, val.i);  in _conn_request_state()
2387 		drbd_err(connection, " old_conn:%s wanted_conn:%s\n", drbd_conn_str(oc), drbd_conn_str(val.conn));  in _conn_request_state()
2393 conn_request_state(struct drbd_connection *connection, union drbd_state mask, union drbd_state val,  in conn_request_state()  argument
2398 	spin_lock_irq(&connection->resource->req_lock);  in conn_request_state()
2399 	rv = _conn_request_state(connection, mask, val, flags);  in conn_request_state()
2400 	spin_unlock_irq(&connection->resource->req_lock);  in conn_request_state()