210 static struct ipmi_user *acquire_ipmi_user(struct ipmi_user *user, int *index)  in acquire_ipmi_user()  argument
211 	__acquires(user->release_barrier)  in acquire_ipmi_user()
215 	*index = srcu_read_lock(&user->release_barrier);  in acquire_ipmi_user()
216 	ruser = srcu_dereference(user->self, &user->release_barrier);  in acquire_ipmi_user()
218 		srcu_read_unlock(&user->release_barrier, *index);  in acquire_ipmi_user()
222 static void release_ipmi_user(struct ipmi_user *user, int index)  in release_ipmi_user()  argument
224 	srcu_read_unlock(&user->release_barrier, index);  in release_ipmi_user()
230 	struct ipmi_user *user;  member
932 	if (!msg->user) {  in deliver_response()
948 		atomic_dec(&msg->user->nr_msgs);  in deliver_response()
951 		struct ipmi_user *user = acquire_ipmi_user(msg->user, &index);  in deliver_response()  local
953 		if (user) {  in deliver_response()
954 			atomic_dec(&user->nr_msgs);  in deliver_response()
955 			user->handler->ipmi_recv_hndl(msg, user->handler_data);  in deliver_response()
956 			release_ipmi_user(user, index);  in deliver_response()
1203 	struct ipmi_user *user = container_of(work, struct ipmi_user,  in free_user_work()  local
1206 	cleanup_srcu_struct(&user->release_barrier);  in free_user_work()
1207 	vfree(user);  in free_user_work()
1213 		     struct ipmi_user      **user)  in ipmi_create_user()  argument
1287 	*user = new_user;  in ipmi_create_user()
1326 	struct ipmi_user *user = container_of(ref, struct ipmi_user, refcount);  in free_user()  local
1329 	queue_work(remove_work_wq, &user->remove_work);  in free_user()
1332 static void _ipmi_destroy_user(struct ipmi_user *user)  in _ipmi_destroy_user()  argument
1334 	struct ipmi_smi  *intf = user->intf;  in _ipmi_destroy_user()
1340 	if (!acquire_ipmi_user(user, &i)) {  in _ipmi_destroy_user()
1345 		synchronize_srcu(&user->release_barrier);  in _ipmi_destroy_user()
1349 	rcu_assign_pointer(user->self, NULL);  in _ipmi_destroy_user()
1350 	release_ipmi_user(user, i);  in _ipmi_destroy_user()
1352 	synchronize_srcu(&user->release_barrier);  in _ipmi_destroy_user()
1354 	if (user->handler->shutdown)  in _ipmi_destroy_user()
1355 		user->handler->shutdown(user->handler_data);  in _ipmi_destroy_user()
1357 	if (user->handler->ipmi_watchdog_pretimeout)  in _ipmi_destroy_user()
1360 	if (user->gets_events)  in _ipmi_destroy_user()
1365 	list_del_rcu(&user->link);  in _ipmi_destroy_user()
1370 		    && (intf->seq_table[i].recv_msg->user == user)) {  in _ipmi_destroy_user()
1387 		if (rcvr->user == user) {  in _ipmi_destroy_user()
1405 int ipmi_destroy_user(struct ipmi_user *user)  in ipmi_destroy_user()  argument
1407 	_ipmi_destroy_user(user);  in ipmi_destroy_user()
1409 	kref_put(&user->refcount, free_user);  in ipmi_destroy_user()
1415 int ipmi_get_version(struct ipmi_user *user,  in ipmi_get_version()  argument
1422 	user = acquire_ipmi_user(user, &index);  in ipmi_get_version()
1423 	if (!user)  in ipmi_get_version()
1426 	rv = bmc_get_device_id(user->intf, NULL, &id, NULL, NULL);  in ipmi_get_version()
1431 	release_ipmi_user(user, index);  in ipmi_get_version()
1437 int ipmi_set_my_address(struct ipmi_user *user,  in ipmi_set_my_address()  argument
1443 	user = acquire_ipmi_user(user, &index);  in ipmi_set_my_address()
1444 	if (!user)  in ipmi_set_my_address()
1451 		user->intf->addrinfo[channel].address = address;  in ipmi_set_my_address()
1453 	release_ipmi_user(user, index);  in ipmi_set_my_address()
1459 int ipmi_get_my_address(struct ipmi_user *user,  in ipmi_get_my_address()  argument
1465 	user = acquire_ipmi_user(user, &index);  in ipmi_get_my_address()
1466 	if (!user)  in ipmi_get_my_address()
1473 		*address = user->intf->addrinfo[channel].address;  in ipmi_get_my_address()
1475 	release_ipmi_user(user, index);  in ipmi_get_my_address()
1481 int ipmi_set_my_LUN(struct ipmi_user *user,  in ipmi_set_my_LUN()  argument
1487 	user = acquire_ipmi_user(user, &index);  in ipmi_set_my_LUN()
1488 	if (!user)  in ipmi_set_my_LUN()
1495 		user->intf->addrinfo[channel].lun = LUN & 0x3;  in ipmi_set_my_LUN()
1497 	release_ipmi_user(user, index);  in ipmi_set_my_LUN()
1503 int ipmi_get_my_LUN(struct ipmi_user *user,  in ipmi_get_my_LUN()  argument
1509 	user = acquire_ipmi_user(user, &index);  in ipmi_get_my_LUN()
1510 	if (!user)  in ipmi_get_my_LUN()
1517 		*address = user->intf->addrinfo[channel].lun;  in ipmi_get_my_LUN()
1519 	release_ipmi_user(user, index);  in ipmi_get_my_LUN()
1525 int ipmi_get_maintenance_mode(struct ipmi_user *user)  in ipmi_get_maintenance_mode()  argument
1530 	user = acquire_ipmi_user(user, &index);  in ipmi_get_maintenance_mode()
1531 	if (!user)  in ipmi_get_maintenance_mode()
1534 	spin_lock_irqsave(&user->intf->maintenance_mode_lock, flags);  in ipmi_get_maintenance_mode()
1535 	mode = user->intf->maintenance_mode;  in ipmi_get_maintenance_mode()
1536 	spin_unlock_irqrestore(&user->intf->maintenance_mode_lock, flags);  in ipmi_get_maintenance_mode()
1537 	release_ipmi_user(user, index);  in ipmi_get_maintenance_mode()
1550 int ipmi_set_maintenance_mode(struct ipmi_user *user, int mode)  in ipmi_set_maintenance_mode()  argument
1554 	struct ipmi_smi *intf = user->intf;  in ipmi_set_maintenance_mode()
1556 	user = acquire_ipmi_user(user, &index);  in ipmi_set_maintenance_mode()
1557 	if (!user)  in ipmi_set_maintenance_mode()
1586 	release_ipmi_user(user, index);  in ipmi_set_maintenance_mode()
1592 int ipmi_set_gets_events(struct ipmi_user *user, bool val)  in ipmi_set_gets_events()  argument
1595 	struct ipmi_smi      *intf = user->intf;  in ipmi_set_gets_events()
1600 	user = acquire_ipmi_user(user, &index);  in ipmi_set_gets_events()
1601 	if (!user)  in ipmi_set_gets_events()
1607 	if (user->gets_events == val)  in ipmi_set_gets_events()
1610 	user->gets_events = val;  in ipmi_set_gets_events()
1627 	while (user->gets_events && !list_empty(&intf->waiting_events)) {  in ipmi_set_gets_events()
1640 			msg->user = user;  in ipmi_set_gets_events()
1641 			kref_get(&user->refcount);  in ipmi_set_gets_events()
1651 	release_ipmi_user(user, index);  in ipmi_set_gets_events()
1689 int ipmi_register_for_cmd(struct ipmi_user *user,  in ipmi_register_for_cmd()  argument
1694 	struct ipmi_smi *intf = user->intf;  in ipmi_register_for_cmd()
1698 	user = acquire_ipmi_user(user, &index);  in ipmi_register_for_cmd()
1699 	if (!user)  in ipmi_register_for_cmd()
1710 	rcvr->user = user;  in ipmi_register_for_cmd()
1728 	release_ipmi_user(user, index);  in ipmi_register_for_cmd()
1734 int ipmi_unregister_for_cmd(struct ipmi_user *user,  in ipmi_unregister_for_cmd()  argument
1739 	struct ipmi_smi *intf = user->intf;  in ipmi_unregister_for_cmd()
1744 	user = acquire_ipmi_user(user, &index);  in ipmi_unregister_for_cmd()
1745 	if (!user)  in ipmi_unregister_for_cmd()
1755 		if (rcvr->user == user) {  in ipmi_unregister_for_cmd()
1767 	release_ipmi_user(user, index);  in ipmi_unregister_for_cmd()
2297 static int i_ipmi_request(struct ipmi_user     *user,  in i_ipmi_request()  argument
2315 	if (user) {  in i_ipmi_request()
2316 		if (atomic_add_return(1, &user->nr_msgs) > max_msgs_per_user) {  in i_ipmi_request()
2352 	recv_msg->user = user;  in i_ipmi_request()
2353 	if (user)  in i_ipmi_request()
2355 		kref_get(&user->refcount);  in i_ipmi_request()
2395 	if (rv && user)  in i_ipmi_request()
2396 		atomic_dec(&user->nr_msgs);  in i_ipmi_request()
2413 int ipmi_request_settime(struct ipmi_user *user,  in ipmi_request_settime()  argument
2425 	if (!user)  in ipmi_request_settime()
2428 	user = acquire_ipmi_user(user, &index);  in ipmi_request_settime()
2429 	if (!user)  in ipmi_request_settime()
2432 	rv = check_addr(user->intf, addr, &saddr, &lun);  in ipmi_request_settime()
2434 		rv = i_ipmi_request(user,  in ipmi_request_settime()
2435 				    user->intf,  in ipmi_request_settime()
2447 	release_ipmi_user(user, index);  in ipmi_request_settime()
2452 int ipmi_request_supply_msgs(struct ipmi_user     *user,  in ipmi_request_supply_msgs()  argument
2464 	if (!user)  in ipmi_request_supply_msgs()
2467 	user = acquire_ipmi_user(user, &index);  in ipmi_request_supply_msgs()
2468 	if (!user)  in ipmi_request_supply_msgs()
2471 	rv = check_addr(user->intf, addr, &saddr, &lun);  in ipmi_request_supply_msgs()
2473 		rv = i_ipmi_request(user,  in ipmi_request_supply_msgs()
2474 				    user->intf,  in ipmi_request_supply_msgs()
2486 	release_ipmi_user(user, index);  in ipmi_request_supply_msgs()
3507 void ipmi_poll_interface(struct ipmi_user *user)  in ipmi_poll_interface()  argument
3509 	ipmi_poll(user->intf);  in ipmi_poll_interface()
3530 	struct ipmi_user *user;  in nr_msgs_show()  local
3535 	list_for_each_entry_rcu(user, &intf->users, link)  in nr_msgs_show()
3536 		count += atomic_read(&user->nr_msgs);  in nr_msgs_show()
3792 		struct ipmi_user *user =  in ipmi_unregister_smi()  local
3796 		_ipmi_destroy_user(user);  in ipmi_unregister_smi()
3883 	struct ipmi_user         *user = NULL;  in handle_ipmb_get_msg_cmd()  local
3905 		user = rcvr->user;  in handle_ipmb_get_msg_cmd()
3906 		kref_get(&user->refcount);  in handle_ipmb_get_msg_cmd()
3908 		user = NULL;  in handle_ipmb_get_msg_cmd()
3911 	if (user == NULL) {  in handle_ipmb_get_msg_cmd()
3952 			kref_put(&user->refcount, free_user);  in handle_ipmb_get_msg_cmd()
3965 			recv_msg->user = user;  in handle_ipmb_get_msg_cmd()
3994 	struct ipmi_user         *user = NULL;  in handle_ipmb_direct_rcv_cmd()  local
4004 		user = rcvr->user;  in handle_ipmb_direct_rcv_cmd()
4005 		kref_get(&user->refcount);  in handle_ipmb_direct_rcv_cmd()
4007 		user = NULL;  in handle_ipmb_direct_rcv_cmd()
4010 	if (user == NULL) {  in handle_ipmb_direct_rcv_cmd()
4043 			kref_put(&user->refcount, free_user);  in handle_ipmb_direct_rcv_cmd()
4057 			recv_msg->user = user;  in handle_ipmb_direct_rcv_cmd()
4183 	struct ipmi_user         *user = NULL;  in handle_lan_get_msg_cmd()  local
4205 		user = rcvr->user;  in handle_lan_get_msg_cmd()
4206 		kref_get(&user->refcount);  in handle_lan_get_msg_cmd()
4208 		user = NULL;  in handle_lan_get_msg_cmd()
4211 	if (user == NULL) {  in handle_lan_get_msg_cmd()
4228 			kref_put(&user->refcount, free_user);  in handle_lan_get_msg_cmd()
4244 			recv_msg->user = user;  in handle_lan_get_msg_cmd()
4282 	struct ipmi_user *user = NULL;  in handle_oem_get_msg_cmd()  local
4312 		user = rcvr->user;  in handle_oem_get_msg_cmd()
4313 		kref_get(&user->refcount);  in handle_oem_get_msg_cmd()
4315 		user = NULL;  in handle_oem_get_msg_cmd()
4318 	if (user == NULL) {  in handle_oem_get_msg_cmd()
4337 			kref_put(&user->refcount, free_user);  in handle_oem_get_msg_cmd()
4351 			recv_msg->user = user;  in handle_oem_get_msg_cmd()
4398 	struct ipmi_user     *user;  in handle_read_event_rsp()  local
4424 	list_for_each_entry_rcu(user, &intf->users, link) {  in handle_read_event_rsp()
4425 		if (!user->gets_events)  in handle_read_event_rsp()
4448 		recv_msg->user = user;  in handle_read_event_rsp()
4449 		kref_get(&user->refcount);  in handle_read_event_rsp()
4802 		struct ipmi_user *user;  in handle_new_recv_msgs()  local
4806 		list_for_each_entry_rcu(user, &intf->users, link) {  in handle_new_recv_msgs()
4807 			if (user->handler->ipmi_watchdog_pretimeout)  in handle_new_recv_msgs()
4808 				user->handler->ipmi_watchdog_pretimeout(  in handle_new_recv_msgs()
4809 					user->handler_data);  in handle_new_recv_msgs()
5164 		rv->user = NULL;  in ipmi_alloc_recv_msg()
5173 	if (msg->user && !oops_in_progress)  in ipmi_free_recv_msg()
5174 		kref_put(&msg->user->refcount, free_user);  in ipmi_free_recv_msg()
5407 	struct ipmi_user *user;  in panic_event()  local
5444 		list_for_each_entry_rcu(user, &intf->users, link) {  in panic_event()
5445 			if (user->handler->ipmi_panic_handler)  in panic_event()
5446 				user->handler->ipmi_panic_handler(  in panic_event()
5447 					user->handler_data);  in panic_event()