117 static u32 nvmet_max_nsid(struct nvmet_subsys *subsys)  in nvmet_max_nsid()  argument
123 	xa_for_each(&subsys->namespaces, idx, cur)  in nvmet_max_nsid()
235 void nvmet_ns_changed(struct nvmet_subsys *subsys, u32 nsid)  in nvmet_ns_changed()  argument
239 	lockdep_assert_held(&subsys->lock);  in nvmet_ns_changed()
241 	list_for_each_entry(ctrl, &subsys->ctrls, subsys_entry) {  in nvmet_ns_changed()
251 void nvmet_send_ana_event(struct nvmet_subsys *subsys,  in nvmet_send_ana_event()  argument
256 	mutex_lock(&subsys->lock);  in nvmet_send_ana_event()
257 	list_for_each_entry(ctrl, &subsys->ctrls, subsys_entry) {  in nvmet_send_ana_event()
265 	mutex_unlock(&subsys->lock);  in nvmet_send_ana_event()
274 		nvmet_send_ana_event(p->subsys, port);  in nvmet_port_send_ana_event()
301 void nvmet_port_del_ctrls(struct nvmet_port *port, struct nvmet_subsys *subsys)  in nvmet_port_del_ctrls()  argument
305 	mutex_lock(&subsys->lock);  in nvmet_port_del_ctrls()
306 	list_for_each_entry(ctrl, &subsys->ctrls, subsys_entry) {  in nvmet_port_del_ctrls()
310 	mutex_unlock(&subsys->lock);  in nvmet_port_del_ctrls()
544 		nvmet_ns_changed(ns->subsys, ns->nsid);  in nvmet_ns_revalidate()
549 	struct nvmet_subsys *subsys = ns->subsys;  in nvmet_ns_enable()  local
553 	mutex_lock(&subsys->lock);  in nvmet_ns_enable()
556 	if (nvmet_is_passthru_subsys(subsys)) {  in nvmet_ns_enable()
565 	if (subsys->nr_namespaces == NVMET_MAX_NAMESPACES)  in nvmet_ns_enable()
578 	list_for_each_entry(ctrl, &subsys->ctrls, subsys_entry)  in nvmet_ns_enable()
586 	if (ns->nsid > subsys->max_nsid)  in nvmet_ns_enable()
587 		subsys->max_nsid = ns->nsid;  in nvmet_ns_enable()
589 	ret = xa_insert(&subsys->namespaces, ns->nsid, ns, GFP_KERNEL);  in nvmet_ns_enable()
593 	subsys->nr_namespaces++;  in nvmet_ns_enable()
595 	nvmet_ns_changed(subsys, ns->nsid);  in nvmet_ns_enable()
599 	mutex_unlock(&subsys->lock);  in nvmet_ns_enable()
603 	subsys->max_nsid = nvmet_max_nsid(subsys);  in nvmet_ns_enable()
606 	list_for_each_entry(ctrl, &subsys->ctrls, subsys_entry)  in nvmet_ns_enable()
615 	struct nvmet_subsys *subsys = ns->subsys;  in nvmet_ns_disable()  local
618 	mutex_lock(&subsys->lock);  in nvmet_ns_disable()
623 	xa_erase(&ns->subsys->namespaces, ns->nsid);  in nvmet_ns_disable()
624 	if (ns->nsid == subsys->max_nsid)  in nvmet_ns_disable()
625 		subsys->max_nsid = nvmet_max_nsid(subsys);  in nvmet_ns_disable()
627 	list_for_each_entry(ctrl, &subsys->ctrls, subsys_entry)  in nvmet_ns_disable()
630 	mutex_unlock(&subsys->lock);  in nvmet_ns_disable()
645 	mutex_lock(&subsys->lock);  in nvmet_ns_disable()
647 	subsys->nr_namespaces--;  in nvmet_ns_disable()
648 	nvmet_ns_changed(subsys, ns->nsid);  in nvmet_ns_disable()
651 	mutex_unlock(&subsys->lock);  in nvmet_ns_disable()
666 struct nvmet_ns *nvmet_ns_alloc(struct nvmet_subsys *subsys, u32 nsid)  in nvmet_ns_alloc()  argument
677 	ns->subsys = subsys;  in nvmet_ns_alloc()
1143 	if (ctrl->subsys->type != NVME_NQN_DISC &&  in nvmet_start_ctrl()
1210 	if (nvmet_is_passthru_subsys(ctrl->subsys))  in nvmet_init_cap()
1219 	struct nvmet_subsys *subsys;  in nvmet_ctrl_find_get()  local
1221 	subsys = nvmet_find_get_subsys(req->port, subsysnqn);  in nvmet_ctrl_find_get()
1222 	if (!subsys) {  in nvmet_ctrl_find_get()
1229 	mutex_lock(&subsys->lock);  in nvmet_ctrl_find_get()
1230 	list_for_each_entry(ctrl, &subsys->ctrls, subsys_entry) {  in nvmet_ctrl_find_get()
1250 	mutex_unlock(&subsys->lock);  in nvmet_ctrl_find_get()
1251 	nvmet_subsys_put(subsys);  in nvmet_ctrl_find_get()
1272 bool nvmet_host_allowed(struct nvmet_subsys *subsys, const char *hostnqn)  in nvmet_host_allowed()  argument
1278 	if (subsys->allow_any_host)  in nvmet_host_allowed()
1281 	if (subsys->type == NVME_NQN_DISC) /* allow all access to disc subsys */  in nvmet_host_allowed()
1284 	list_for_each_entry(p, &subsys->hosts, entry) {  in nvmet_host_allowed()
1306 	xa_for_each(&ctrl->subsys->namespaces, idx, ns)  in nvmet_setup_p2p_ns_map()
1336 	struct nvmet_subsys *subsys;  in nvmet_alloc_ctrl()  local
1342 	subsys = nvmet_find_get_subsys(req->port, subsysnqn);  in nvmet_alloc_ctrl()
1343 	if (!subsys) {  in nvmet_alloc_ctrl()
1352 	if (!nvmet_host_allowed(subsys, hostnqn)) {  in nvmet_alloc_ctrl()
1381 	ctrl->subsys = subsys;  in nvmet_alloc_ctrl()
1390 	ctrl->sqs = kcalloc(subsys->max_qid + 1,  in nvmet_alloc_ctrl()
1396 	if (subsys->cntlid_min > subsys->cntlid_max)  in nvmet_alloc_ctrl()
1400 			     subsys->cntlid_min, subsys->cntlid_max,  in nvmet_alloc_ctrl()
1414 	if ((ctrl->subsys->type == NVME_NQN_DISC) && !kato)  in nvmet_alloc_ctrl()
1425 	mutex_lock(&subsys->lock);  in nvmet_alloc_ctrl()
1426 	list_add_tail(&ctrl->subsys_entry, &subsys->ctrls);  in nvmet_alloc_ctrl()
1428 	mutex_unlock(&subsys->lock);  in nvmet_alloc_ctrl()
1440 	nvmet_subsys_put(subsys);  in nvmet_alloc_ctrl()
1448 	struct nvmet_subsys *subsys = ctrl->subsys;  in nvmet_ctrl_free()  local
1450 	mutex_lock(&subsys->lock);  in nvmet_ctrl_free()
1453 	mutex_unlock(&subsys->lock);  in nvmet_ctrl_free()
1467 	nvmet_subsys_put(subsys);  in nvmet_ctrl_free()
1502 		if (!strncmp(p->subsys->subsysnqn, subsysnqn,  in nvmet_find_get_subsys()
1504 			if (!kref_get_unless_zero(&p->subsys->ref))  in nvmet_find_get_subsys()
1507 			return p->subsys;  in nvmet_find_get_subsys()
1517 	struct nvmet_subsys *subsys;  in nvmet_subsys_alloc()  local
1521 	subsys = kzalloc(sizeof(*subsys), GFP_KERNEL);  in nvmet_subsys_alloc()
1522 	if (!subsys)  in nvmet_subsys_alloc()
1525 	subsys->ver = NVMET_DEFAULT_VS;  in nvmet_subsys_alloc()
1528 	bin2hex(subsys->serial, &serial, sizeof(serial));  in nvmet_subsys_alloc()
1530 	subsys->model_number = kstrdup(NVMET_DEFAULT_CTRL_MODEL, GFP_KERNEL);  in nvmet_subsys_alloc()
1531 	if (!subsys->model_number) {  in nvmet_subsys_alloc()
1538 		subsys->max_qid = NVMET_NR_QUEUES;  in nvmet_subsys_alloc()
1541 		subsys->max_qid = 0;  in nvmet_subsys_alloc()
1548 	subsys->type = type;  in nvmet_subsys_alloc()
1549 	subsys->subsysnqn = kstrndup(subsysnqn, NVMF_NQN_SIZE,  in nvmet_subsys_alloc()
1551 	if (!subsys->subsysnqn) {  in nvmet_subsys_alloc()
1555 	subsys->cntlid_min = NVME_CNTLID_MIN;  in nvmet_subsys_alloc()
1556 	subsys->cntlid_max = NVME_CNTLID_MAX;  in nvmet_subsys_alloc()
1557 	kref_init(&subsys->ref);  in nvmet_subsys_alloc()
1559 	mutex_init(&subsys->lock);  in nvmet_subsys_alloc()
1560 	xa_init(&subsys->namespaces);  in nvmet_subsys_alloc()
1561 	INIT_LIST_HEAD(&subsys->ctrls);  in nvmet_subsys_alloc()
1562 	INIT_LIST_HEAD(&subsys->hosts);  in nvmet_subsys_alloc()
1564 	return subsys;  in nvmet_subsys_alloc()
1567 	kfree(subsys->model_number);  in nvmet_subsys_alloc()
1569 	kfree(subsys);  in nvmet_subsys_alloc()
1575 	struct nvmet_subsys *subsys =  in nvmet_subsys_free()  local
1578 	WARN_ON_ONCE(!xa_empty(&subsys->namespaces));  in nvmet_subsys_free()
1580 	xa_destroy(&subsys->namespaces);  in nvmet_subsys_free()
1581 	nvmet_passthru_subsys_free(subsys);  in nvmet_subsys_free()
1583 	kfree(subsys->subsysnqn);  in nvmet_subsys_free()
1584 	kfree(subsys->model_number);  in nvmet_subsys_free()
1585 	kfree(subsys);  in nvmet_subsys_free()
1588 void nvmet_subsys_del_ctrls(struct nvmet_subsys *subsys)  in nvmet_subsys_del_ctrls()  argument
1592 	mutex_lock(&subsys->lock);  in nvmet_subsys_del_ctrls()
1593 	list_for_each_entry(ctrl, &subsys->ctrls, subsys_entry)  in nvmet_subsys_del_ctrls()
1595 	mutex_unlock(&subsys->lock);  in nvmet_subsys_del_ctrls()
1598 void nvmet_subsys_put(struct nvmet_subsys *subsys)  in nvmet_subsys_put()  argument
1600 	kref_put(&subsys->ref, nvmet_subsys_free);  in nvmet_subsys_put()