Lines Matching +full:supports +full:- +full:cqe
1 // SPDX-License-Identifier: GPL-2.0
4 * Copyright (c) 2015-2016 HGST, a Western Digital Company.
10 #include <linux/pci-p2pdma.h>
35 * - subsystems list
36 * - per-subsystem allowed hosts list
37 * - allow_any_host subsystem attribute
38 * - nvmet_genctr
39 * - the nvmet_transports array
42 * while when reading (popolating discovery log page or checking host-subsystem
56 case -ENOSPC: in errno_to_nvme_status()
57 req->error_loc = offsetof(struct nvme_rw_command, length); in errno_to_nvme_status()
59 case -EREMOTEIO: in errno_to_nvme_status()
60 req->error_loc = offsetof(struct nvme_rw_command, slba); in errno_to_nvme_status()
62 case -EOPNOTSUPP: in errno_to_nvme_status()
63 req->error_loc = offsetof(struct nvme_common_command, opcode); in errno_to_nvme_status()
64 switch (req->cmd->common.opcode) { in errno_to_nvme_status()
72 case -ENODATA: in errno_to_nvme_status()
73 req->error_loc = offsetof(struct nvme_rw_command, nsid); in errno_to_nvme_status()
75 case -EIO: in errno_to_nvme_status()
78 req->error_loc = offsetof(struct nvme_common_command, opcode); in errno_to_nvme_status()
85 pr_debug("unhandled cmd %d on qid %d\n", req->cmd->common.opcode, in nvmet_report_invalid_opcode()
86 req->sq->qid); in nvmet_report_invalid_opcode()
88 req->error_loc = offsetof(struct nvme_common_command, opcode); in nvmet_report_invalid_opcode()
98 if (sg_pcopy_from_buffer(req->sg, req->sg_cnt, buf, len, off) != len) { in nvmet_copy_to_sgl()
99 req->error_loc = offsetof(struct nvme_common_command, dptr); in nvmet_copy_to_sgl()
107 if (sg_pcopy_to_buffer(req->sg, req->sg_cnt, buf, len, off) != len) { in nvmet_copy_from_sgl()
108 req->error_loc = offsetof(struct nvme_common_command, dptr); in nvmet_copy_from_sgl()
116 if (sg_zero_buffer(req->sg, req->sg_cnt, len, off) != len) { in nvmet_zero_sgl()
117 req->error_loc = offsetof(struct nvme_common_command, dptr); in nvmet_zero_sgl()
129 xa_for_each(&subsys->namespaces, idx, cur) in nvmet_max_nsid()
130 nsid = cur->nsid; in nvmet_max_nsid()
137 return aen->event_type | (aen->event_info << 8) | (aen->log_page << 16); in nvmet_async_event_result()
144 mutex_lock(&ctrl->lock); in nvmet_async_events_failall()
145 while (ctrl->nr_async_event_cmds) { in nvmet_async_events_failall()
146 req = ctrl->async_event_cmds[--ctrl->nr_async_event_cmds]; in nvmet_async_events_failall()
147 mutex_unlock(&ctrl->lock); in nvmet_async_events_failall()
149 mutex_lock(&ctrl->lock); in nvmet_async_events_failall()
151 mutex_unlock(&ctrl->lock); in nvmet_async_events_failall()
159 mutex_lock(&ctrl->lock); in nvmet_async_events_process()
160 while (ctrl->nr_async_event_cmds && !list_empty(&ctrl->async_events)) { in nvmet_async_events_process()
161 aen = list_first_entry(&ctrl->async_events, in nvmet_async_events_process()
163 req = ctrl->async_event_cmds[--ctrl->nr_async_event_cmds]; in nvmet_async_events_process()
166 list_del(&aen->entry); in nvmet_async_events_process()
169 mutex_unlock(&ctrl->lock); in nvmet_async_events_process()
170 trace_nvmet_async_event(ctrl, req->cqe->result.u32); in nvmet_async_events_process()
172 mutex_lock(&ctrl->lock); in nvmet_async_events_process()
174 mutex_unlock(&ctrl->lock); in nvmet_async_events_process()
181 mutex_lock(&ctrl->lock); in nvmet_async_events_free()
182 list_for_each_entry_safe(aen, tmp, &ctrl->async_events, entry) { in nvmet_async_events_free()
183 list_del(&aen->entry); in nvmet_async_events_free()
186 mutex_unlock(&ctrl->lock); in nvmet_async_events_free()
206 aen->event_type = event_type; in nvmet_add_async_event()
207 aen->event_info = event_info; in nvmet_add_async_event()
208 aen->log_page = log_page; in nvmet_add_async_event()
210 mutex_lock(&ctrl->lock); in nvmet_add_async_event()
211 list_add_tail(&aen->entry, &ctrl->async_events); in nvmet_add_async_event()
212 mutex_unlock(&ctrl->lock); in nvmet_add_async_event()
214 queue_work(nvmet_wq, &ctrl->async_event_work); in nvmet_add_async_event()
221 mutex_lock(&ctrl->lock); in nvmet_add_to_changed_ns_log()
222 if (ctrl->nr_changed_ns > NVME_MAX_CHANGED_NAMESPACES) in nvmet_add_to_changed_ns_log()
225 for (i = 0; i < ctrl->nr_changed_ns; i++) { in nvmet_add_to_changed_ns_log()
226 if (ctrl->changed_ns_list[i] == nsid) in nvmet_add_to_changed_ns_log()
230 if (ctrl->nr_changed_ns == NVME_MAX_CHANGED_NAMESPACES) { in nvmet_add_to_changed_ns_log()
231 ctrl->changed_ns_list[0] = cpu_to_le32(0xffffffff); in nvmet_add_to_changed_ns_log()
232 ctrl->nr_changed_ns = U32_MAX; in nvmet_add_to_changed_ns_log()
236 ctrl->changed_ns_list[ctrl->nr_changed_ns++] = nsid; in nvmet_add_to_changed_ns_log()
238 mutex_unlock(&ctrl->lock); in nvmet_add_to_changed_ns_log()
245 lockdep_assert_held(&subsys->lock); in nvmet_ns_changed()
247 list_for_each_entry(ctrl, &subsys->ctrls, subsys_entry) { in nvmet_ns_changed()
262 mutex_lock(&subsys->lock); in nvmet_send_ana_event()
263 list_for_each_entry(ctrl, &subsys->ctrls, subsys_entry) { in nvmet_send_ana_event()
264 if (port && ctrl->port != port) in nvmet_send_ana_event()
271 mutex_unlock(&subsys->lock); in nvmet_send_ana_event()
279 list_for_each_entry(p, &port->subsystems, entry) in nvmet_port_send_ana_event()
280 nvmet_send_ana_event(p->subsys, port); in nvmet_port_send_ana_event()
289 if (nvmet_transports[ops->type]) in nvmet_register_transport()
290 ret = -EINVAL; in nvmet_register_transport()
292 nvmet_transports[ops->type] = ops; in nvmet_register_transport()
302 nvmet_transports[ops->type] = NULL; in nvmet_unregister_transport()
311 mutex_lock(&subsys->lock); in nvmet_port_del_ctrls()
312 list_for_each_entry(ctrl, &subsys->ctrls, subsys_entry) { in nvmet_port_del_ctrls()
313 if (ctrl->port == port) in nvmet_port_del_ctrls()
314 ctrl->ops->delete_ctrl(ctrl); in nvmet_port_del_ctrls()
316 mutex_unlock(&subsys->lock); in nvmet_port_del_ctrls()
326 ops = nvmet_transports[port->disc_addr.trtype]; in nvmet_enable_port()
329 request_module("nvmet-transport-%d", port->disc_addr.trtype); in nvmet_enable_port()
331 ops = nvmet_transports[port->disc_addr.trtype]; in nvmet_enable_port()
334 port->disc_addr.trtype); in nvmet_enable_port()
335 return -EINVAL; in nvmet_enable_port()
339 if (!try_module_get(ops->owner)) in nvmet_enable_port()
340 return -EINVAL; in nvmet_enable_port()
346 if (port->pi_enable && !(ops->flags & NVMF_METADATA_SUPPORTED)) { in nvmet_enable_port()
347 pr_err("T10-PI is not supported by transport type %d\n", in nvmet_enable_port()
348 port->disc_addr.trtype); in nvmet_enable_port()
349 ret = -EINVAL; in nvmet_enable_port()
353 ret = ops->add_port(port); in nvmet_enable_port()
358 if (port->inline_data_size < 0) in nvmet_enable_port()
359 port->inline_data_size = 0; in nvmet_enable_port()
361 port->enabled = true; in nvmet_enable_port()
362 port->tr_ops = ops; in nvmet_enable_port()
366 module_put(ops->owner); in nvmet_enable_port()
376 port->enabled = false; in nvmet_disable_port()
377 port->tr_ops = NULL; in nvmet_disable_port()
379 ops = nvmet_transports[port->disc_addr.trtype]; in nvmet_disable_port()
380 ops->remove_port(port); in nvmet_disable_port()
381 module_put(ops->owner); in nvmet_disable_port()
388 bool reset_tbkas = ctrl->reset_tbkas; in nvmet_keep_alive_timer()
390 ctrl->reset_tbkas = false; in nvmet_keep_alive_timer()
392 pr_debug("ctrl %d reschedule traffic based keep-alive timer\n", in nvmet_keep_alive_timer()
393 ctrl->cntlid); in nvmet_keep_alive_timer()
394 queue_delayed_work(nvmet_wq, &ctrl->ka_work, ctrl->kato * HZ); in nvmet_keep_alive_timer()
398 pr_err("ctrl %d keep-alive timer (%d seconds) expired!\n", in nvmet_keep_alive_timer()
399 ctrl->cntlid, ctrl->kato); in nvmet_keep_alive_timer()
406 if (unlikely(ctrl->kato == 0)) in nvmet_start_keep_alive_timer()
409 pr_debug("ctrl %d start keep-alive timer for %d secs\n", in nvmet_start_keep_alive_timer()
410 ctrl->cntlid, ctrl->kato); in nvmet_start_keep_alive_timer()
412 queue_delayed_work(nvmet_wq, &ctrl->ka_work, ctrl->kato * HZ); in nvmet_start_keep_alive_timer()
417 if (unlikely(ctrl->kato == 0)) in nvmet_stop_keep_alive_timer()
420 pr_debug("ctrl %d stop keep-alive\n", ctrl->cntlid); in nvmet_stop_keep_alive_timer()
422 cancel_delayed_work_sync(&ctrl->ka_work); in nvmet_stop_keep_alive_timer()
427 u32 nsid = le32_to_cpu(req->cmd->common.nsid); in nvmet_req_find_ns()
429 req->ns = xa_load(&nvmet_req_subsys(req)->namespaces, nsid); in nvmet_req_find_ns()
430 if (unlikely(!req->ns)) { in nvmet_req_find_ns()
431 req->error_loc = offsetof(struct nvme_common_command, nsid); in nvmet_req_find_ns()
435 percpu_ref_get(&req->ns->ref); in nvmet_req_find_ns()
443 complete(&ns->disable_done); in nvmet_destroy_namespace()
448 percpu_ref_put(&ns->ref); in nvmet_put_namespace()
462 if (!ns->use_p2pmem) in nvmet_p2pmem_ns_enable()
465 if (!ns->bdev) { in nvmet_p2pmem_ns_enable()
466 pr_err("peer-to-peer DMA is not supported by non-block device namespaces\n"); in nvmet_p2pmem_ns_enable()
467 return -EINVAL; in nvmet_p2pmem_ns_enable()
470 if (!blk_queue_pci_p2pdma(ns->bdev->bd_disk->queue)) { in nvmet_p2pmem_ns_enable()
471 pr_err("peer-to-peer DMA is not supported by the driver of %s\n", in nvmet_p2pmem_ns_enable()
472 ns->device_path); in nvmet_p2pmem_ns_enable()
473 return -EINVAL; in nvmet_p2pmem_ns_enable()
476 if (ns->p2p_dev) { in nvmet_p2pmem_ns_enable()
477 ret = pci_p2pdma_distance(ns->p2p_dev, nvmet_ns_dev(ns), true); in nvmet_p2pmem_ns_enable()
479 return -EINVAL; in nvmet_p2pmem_ns_enable()
490 pr_err("no peer-to-peer memory is available for %s\n", in nvmet_p2pmem_ns_enable()
491 ns->device_path); in nvmet_p2pmem_ns_enable()
492 return -EINVAL; in nvmet_p2pmem_ns_enable()
502 * Note: ctrl->subsys->lock should be held when calling this function
511 if (!ctrl->p2p_client || !ns->use_p2pmem) in nvmet_p2pmem_ns_add_p2p()
514 if (ns->p2p_dev) { in nvmet_p2pmem_ns_add_p2p()
515 ret = pci_p2pdma_distance(ns->p2p_dev, ctrl->p2p_client, true); in nvmet_p2pmem_ns_add_p2p()
519 p2p_dev = pci_dev_get(ns->p2p_dev); in nvmet_p2pmem_ns_add_p2p()
521 clients[0] = ctrl->p2p_client; in nvmet_p2pmem_ns_add_p2p()
526 pr_err("no peer-to-peer memory is available that's supported by %s and %s\n", in nvmet_p2pmem_ns_add_p2p()
527 dev_name(ctrl->p2p_client), ns->device_path); in nvmet_p2pmem_ns_add_p2p()
532 ret = radix_tree_insert(&ctrl->p2p_ns_map, ns->nsid, p2p_dev); in nvmet_p2pmem_ns_add_p2p()
537 ns->nsid); in nvmet_p2pmem_ns_add_p2p()
542 loff_t oldsize = ns->size; in nvmet_ns_revalidate()
544 if (ns->bdev) in nvmet_ns_revalidate()
549 return oldsize != ns->size; in nvmet_ns_revalidate()
554 struct nvmet_subsys *subsys = ns->subsys; in nvmet_ns_enable()
558 mutex_lock(&subsys->lock); in nvmet_ns_enable()
566 if (ns->enabled) in nvmet_ns_enable()
569 ret = -EMFILE; in nvmet_ns_enable()
570 if (subsys->nr_namespaces == NVMET_MAX_NAMESPACES) in nvmet_ns_enable()
574 if (ret == -ENOTBLK) in nvmet_ns_enable()
583 list_for_each_entry(ctrl, &subsys->ctrls, subsys_entry) in nvmet_ns_enable()
586 ret = percpu_ref_init(&ns->ref, nvmet_destroy_namespace, in nvmet_ns_enable()
591 if (ns->nsid > subsys->max_nsid) in nvmet_ns_enable()
592 subsys->max_nsid = ns->nsid; in nvmet_ns_enable()
594 ret = xa_insert(&subsys->namespaces, ns->nsid, ns, GFP_KERNEL); in nvmet_ns_enable()
598 subsys->nr_namespaces++; in nvmet_ns_enable()
600 nvmet_ns_changed(subsys, ns->nsid); in nvmet_ns_enable()
601 ns->enabled = true; in nvmet_ns_enable()
604 mutex_unlock(&subsys->lock); in nvmet_ns_enable()
608 subsys->max_nsid = nvmet_max_nsid(subsys); in nvmet_ns_enable()
609 percpu_ref_exit(&ns->ref); in nvmet_ns_enable()
611 list_for_each_entry(ctrl, &subsys->ctrls, subsys_entry) in nvmet_ns_enable()
612 pci_dev_put(radix_tree_delete(&ctrl->p2p_ns_map, ns->nsid)); in nvmet_ns_enable()
620 struct nvmet_subsys *subsys = ns->subsys; in nvmet_ns_disable()
623 mutex_lock(&subsys->lock); in nvmet_ns_disable()
624 if (!ns->enabled) in nvmet_ns_disable()
627 ns->enabled = false; in nvmet_ns_disable()
628 xa_erase(&ns->subsys->namespaces, ns->nsid); in nvmet_ns_disable()
629 if (ns->nsid == subsys->max_nsid) in nvmet_ns_disable()
630 subsys->max_nsid = nvmet_max_nsid(subsys); in nvmet_ns_disable()
632 list_for_each_entry(ctrl, &subsys->ctrls, subsys_entry) in nvmet_ns_disable()
633 pci_dev_put(radix_tree_delete(&ctrl->p2p_ns_map, ns->nsid)); in nvmet_ns_disable()
635 mutex_unlock(&subsys->lock); in nvmet_ns_disable()
645 percpu_ref_kill(&ns->ref); in nvmet_ns_disable()
647 wait_for_completion(&ns->disable_done); in nvmet_ns_disable()
648 percpu_ref_exit(&ns->ref); in nvmet_ns_disable()
650 mutex_lock(&subsys->lock); in nvmet_ns_disable()
652 subsys->nr_namespaces--; in nvmet_ns_disable()
653 nvmet_ns_changed(subsys, ns->nsid); in nvmet_ns_disable()
656 mutex_unlock(&subsys->lock); in nvmet_ns_disable()
664 nvmet_ana_group_enabled[ns->anagrpid]--; in nvmet_ns_free()
667 kfree(ns->device_path); in nvmet_ns_free()
679 init_completion(&ns->disable_done); in nvmet_ns_alloc()
681 ns->nsid = nsid; in nvmet_ns_alloc()
682 ns->subsys = subsys; in nvmet_ns_alloc()
685 ns->anagrpid = NVMET_DEFAULT_ANA_GRPID; in nvmet_ns_alloc()
686 nvmet_ana_group_enabled[ns->anagrpid]++; in nvmet_ns_alloc()
689 uuid_gen(&ns->uuid); in nvmet_ns_alloc()
690 ns->buffered_io = false; in nvmet_ns_alloc()
691 ns->csi = NVME_CSI_NVM; in nvmet_ns_alloc()
698 if (req->sq->size) { in nvmet_update_sq_head()
701 old_sqhd = READ_ONCE(req->sq->sqhd); in nvmet_update_sq_head()
703 new_sqhd = (old_sqhd + 1) % req->sq->size; in nvmet_update_sq_head()
704 } while (!try_cmpxchg(&req->sq->sqhd, &old_sqhd, new_sqhd)); in nvmet_update_sq_head()
706 req->cqe->sq_head = cpu_to_le16(req->sq->sqhd & 0x0000FFFF); in nvmet_update_sq_head()
711 struct nvmet_ctrl *ctrl = req->sq->ctrl; in nvmet_set_error()
715 req->cqe->status = cpu_to_le16(status << 1); in nvmet_set_error()
717 if (!ctrl || req->error_loc == NVMET_NO_ERROR_LOC) in nvmet_set_error()
720 spin_lock_irqsave(&ctrl->error_lock, flags); in nvmet_set_error()
721 ctrl->err_counter++; in nvmet_set_error()
723 &ctrl->slots[ctrl->err_counter % NVMET_ERROR_LOG_SLOTS]; in nvmet_set_error()
725 new_error_slot->error_count = cpu_to_le64(ctrl->err_counter); in nvmet_set_error()
726 new_error_slot->sqid = cpu_to_le16(req->sq->qid); in nvmet_set_error()
727 new_error_slot->cmdid = cpu_to_le16(req->cmd->common.command_id); in nvmet_set_error()
728 new_error_slot->status_field = cpu_to_le16(status << 1); in nvmet_set_error()
729 new_error_slot->param_error_location = cpu_to_le16(req->error_loc); in nvmet_set_error()
730 new_error_slot->lba = cpu_to_le64(req->error_slba); in nvmet_set_error()
731 new_error_slot->nsid = req->cmd->common.nsid; in nvmet_set_error()
732 spin_unlock_irqrestore(&ctrl->error_lock, flags); in nvmet_set_error()
735 req->cqe->status |= cpu_to_le16(1 << 14); in nvmet_set_error()
740 struct nvmet_ns *ns = req->ns; in __nvmet_req_complete()
742 if (!req->sq->sqhd_disabled) in __nvmet_req_complete()
744 req->cqe->sq_id = cpu_to_le16(req->sq->qid); in __nvmet_req_complete()
745 req->cqe->command_id = req->cmd->common.command_id; in __nvmet_req_complete()
752 req->ops->queue_response(req); in __nvmet_req_complete()
759 struct nvmet_sq *sq = req->sq; in nvmet_req_complete()
762 percpu_ref_put(&sq->ref); in nvmet_req_complete()
769 cq->qid = qid; in nvmet_cq_setup()
770 cq->size = size; in nvmet_cq_setup()
776 sq->sqhd = 0; in nvmet_sq_setup()
777 sq->qid = qid; in nvmet_sq_setup()
778 sq->size = size; in nvmet_sq_setup()
780 ctrl->sqs[qid] = sq; in nvmet_sq_setup()
787 complete(&sq->confirm_done); in nvmet_confirm_sq()
792 struct nvmet_ctrl *ctrl = sq->ctrl; in nvmet_sq_destroy()
798 if (ctrl && ctrl->sqs && ctrl->sqs[0] == sq) in nvmet_sq_destroy()
800 percpu_ref_kill_and_confirm(&sq->ref, nvmet_confirm_sq); in nvmet_sq_destroy()
801 wait_for_completion(&sq->confirm_done); in nvmet_sq_destroy()
802 wait_for_completion(&sq->free_done); in nvmet_sq_destroy()
803 percpu_ref_exit(&sq->ref); in nvmet_sq_destroy()
809 * send us keep-alive during this period, hence reset the in nvmet_sq_destroy()
810 * traffic based keep-alive timer so we don't trigger a in nvmet_sq_destroy()
811 * controller teardown as a result of a keep-alive expiration. in nvmet_sq_destroy()
813 ctrl->reset_tbkas = true; in nvmet_sq_destroy()
814 sq->ctrl->sqs[sq->qid] = NULL; in nvmet_sq_destroy()
816 sq->ctrl = NULL; /* allows reusing the queue later */ in nvmet_sq_destroy()
825 complete(&sq->free_done); in nvmet_sq_free()
832 ret = percpu_ref_init(&sq->ref, nvmet_sq_free, 0, GFP_KERNEL); in nvmet_sq_init()
837 init_completion(&sq->free_done); in nvmet_sq_init()
838 init_completion(&sq->confirm_done); in nvmet_sq_init()
848 enum nvme_ana_state state = port->ana_state[ns->anagrpid]; in nvmet_check_ana_state()
861 if (unlikely(req->ns->readonly)) { in nvmet_io_cmd_check_access()
862 switch (req->cmd->common.opcode) { in nvmet_io_cmd_check_access()
876 struct nvme_command *cmd = req->cmd; in nvmet_parse_io_cmd()
896 ret = nvmet_check_ana_state(req->port, req->ns); in nvmet_parse_io_cmd()
898 req->error_loc = offsetof(struct nvme_common_command, nsid); in nvmet_parse_io_cmd()
903 req->error_loc = offsetof(struct nvme_common_command, nsid); in nvmet_parse_io_cmd()
907 switch (req->ns->csi) { in nvmet_parse_io_cmd()
909 if (req->ns->file) in nvmet_parse_io_cmd()
924 u8 flags = req->cmd->common.flags; in nvmet_req_init()
927 req->cq = cq; in nvmet_req_init()
928 req->sq = sq; in nvmet_req_init()
929 req->ops = ops; in nvmet_req_init()
930 req->sg = NULL; in nvmet_req_init()
931 req->metadata_sg = NULL; in nvmet_req_init()
932 req->sg_cnt = 0; in nvmet_req_init()
933 req->metadata_sg_cnt = 0; in nvmet_req_init()
934 req->transfer_len = 0; in nvmet_req_init()
935 req->metadata_len = 0; in nvmet_req_init()
936 req->cqe->status = 0; in nvmet_req_init()
937 req->cqe->sq_head = 0; in nvmet_req_init()
938 req->ns = NULL; in nvmet_req_init()
939 req->error_loc = NVMET_NO_ERROR_LOC; in nvmet_req_init()
940 req->error_slba = 0; in nvmet_req_init()
944 req->error_loc = offsetof(struct nvme_common_command, flags); in nvmet_req_init()
955 req->error_loc = offsetof(struct nvme_common_command, flags); in nvmet_req_init()
960 if (unlikely(!req->sq->ctrl)) in nvmet_req_init()
961 /* will return an error for any non-connect command: */ in nvmet_req_init()
963 else if (likely(req->sq->qid != 0)) in nvmet_req_init()
971 trace_nvmet_req_init(req, req->cmd); in nvmet_req_init()
973 if (unlikely(!percpu_ref_tryget_live(&sq->ref))) { in nvmet_req_init()
978 if (sq->ctrl) in nvmet_req_init()
979 sq->ctrl->reset_tbkas = true; in nvmet_req_init()
991 percpu_ref_put(&req->sq->ref); in nvmet_req_uninit()
992 if (req->ns) in nvmet_req_uninit()
993 nvmet_put_namespace(req->ns); in nvmet_req_uninit()
999 if (unlikely(len != req->transfer_len)) { in nvmet_check_transfer_len()
1000 req->error_loc = offsetof(struct nvme_common_command, dptr); in nvmet_check_transfer_len()
1011 if (unlikely(data_len > req->transfer_len)) { in nvmet_check_data_len_lte()
1012 req->error_loc = offsetof(struct nvme_common_command, dptr); in nvmet_check_data_len_lte()
1022 return req->transfer_len - req->metadata_len; in nvmet_data_transfer_len()
1028 req->sg = pci_p2pmem_alloc_sgl(p2p_dev, &req->sg_cnt, in nvmet_req_alloc_p2pmem_sgls()
1030 if (!req->sg) in nvmet_req_alloc_p2pmem_sgls()
1033 if (req->metadata_len) { in nvmet_req_alloc_p2pmem_sgls()
1034 req->metadata_sg = pci_p2pmem_alloc_sgl(p2p_dev, in nvmet_req_alloc_p2pmem_sgls()
1035 &req->metadata_sg_cnt, req->metadata_len); in nvmet_req_alloc_p2pmem_sgls()
1036 if (!req->metadata_sg) in nvmet_req_alloc_p2pmem_sgls()
1040 req->p2p_dev = p2p_dev; in nvmet_req_alloc_p2pmem_sgls()
1044 pci_p2pmem_free_sgl(req->p2p_dev, req->sg); in nvmet_req_alloc_p2pmem_sgls()
1046 return -ENOMEM; in nvmet_req_alloc_p2pmem_sgls()
1052 !req->sq->ctrl || !req->sq->qid || !req->ns) in nvmet_req_find_p2p_dev()
1054 return radix_tree_lookup(&req->sq->ctrl->p2p_ns_map, req->ns->nsid); in nvmet_req_find_p2p_dev()
1064 req->sg = sgl_alloc(nvmet_data_transfer_len(req), GFP_KERNEL, in nvmet_req_alloc_sgls()
1065 &req->sg_cnt); in nvmet_req_alloc_sgls()
1066 if (unlikely(!req->sg)) in nvmet_req_alloc_sgls()
1069 if (req->metadata_len) { in nvmet_req_alloc_sgls()
1070 req->metadata_sg = sgl_alloc(req->metadata_len, GFP_KERNEL, in nvmet_req_alloc_sgls()
1071 &req->metadata_sg_cnt); in nvmet_req_alloc_sgls()
1072 if (unlikely(!req->metadata_sg)) in nvmet_req_alloc_sgls()
1078 sgl_free(req->sg); in nvmet_req_alloc_sgls()
1080 return -ENOMEM; in nvmet_req_alloc_sgls()
1086 if (req->p2p_dev) { in nvmet_req_free_sgls()
1087 pci_p2pmem_free_sgl(req->p2p_dev, req->sg); in nvmet_req_free_sgls()
1088 if (req->metadata_sg) in nvmet_req_free_sgls()
1089 pci_p2pmem_free_sgl(req->p2p_dev, req->metadata_sg); in nvmet_req_free_sgls()
1090 req->p2p_dev = NULL; in nvmet_req_free_sgls()
1092 sgl_free(req->sg); in nvmet_req_free_sgls()
1093 if (req->metadata_sg) in nvmet_req_free_sgls()
1094 sgl_free(req->metadata_sg); in nvmet_req_free_sgls()
1097 req->sg = NULL; in nvmet_req_free_sgls()
1098 req->metadata_sg = NULL; in nvmet_req_free_sgls()
1099 req->sg_cnt = 0; in nvmet_req_free_sgls()
1100 req->metadata_sg_cnt = 0; in nvmet_req_free_sgls()
1152 lockdep_assert_held(&ctrl->lock); in nvmet_start_ctrl()
1160 if (!nvmet_is_disc_subsys(ctrl->subsys) && in nvmet_start_ctrl()
1161 (nvmet_cc_iosqes(ctrl->cc) != NVME_NVM_IOSQES || in nvmet_start_ctrl()
1162 nvmet_cc_iocqes(ctrl->cc) != NVME_NVM_IOCQES)) { in nvmet_start_ctrl()
1163 ctrl->csts = NVME_CSTS_CFS; in nvmet_start_ctrl()
1167 if (nvmet_cc_mps(ctrl->cc) != 0 || in nvmet_start_ctrl()
1168 nvmet_cc_ams(ctrl->cc) != 0 || in nvmet_start_ctrl()
1169 !nvmet_css_supported(nvmet_cc_css(ctrl->cc))) { in nvmet_start_ctrl()
1170 ctrl->csts = NVME_CSTS_CFS; in nvmet_start_ctrl()
1174 ctrl->csts = NVME_CSTS_RDY; in nvmet_start_ctrl()
1182 if (ctrl->kato) in nvmet_start_ctrl()
1183 mod_delayed_work(nvmet_wq, &ctrl->ka_work, ctrl->kato * HZ); in nvmet_start_ctrl()
1188 lockdep_assert_held(&ctrl->lock); in nvmet_clear_ctrl()
1191 ctrl->csts &= ~NVME_CSTS_RDY; in nvmet_clear_ctrl()
1192 ctrl->cc = 0; in nvmet_clear_ctrl()
1199 mutex_lock(&ctrl->lock); in nvmet_update_cc()
1200 old = ctrl->cc; in nvmet_update_cc()
1201 ctrl->cc = new; in nvmet_update_cc()
1209 ctrl->csts |= NVME_CSTS_SHST_CMPLT; in nvmet_update_cc()
1212 ctrl->csts &= ~NVME_CSTS_SHST_CMPLT; in nvmet_update_cc()
1213 mutex_unlock(&ctrl->lock); in nvmet_update_cc()
1219 ctrl->cap = (1ULL << 37); in nvmet_init_cap()
1220 /* Controller supports one or more I/O Command Sets */ in nvmet_init_cap()
1221 ctrl->cap |= (1ULL << 43); in nvmet_init_cap()
1223 ctrl->cap |= (15ULL << 24); in nvmet_init_cap()
1225 if (ctrl->ops->get_max_queue_size) in nvmet_init_cap()
1226 ctrl->cap |= ctrl->ops->get_max_queue_size(ctrl) - 1; in nvmet_init_cap()
1228 ctrl->cap |= NVMET_QUEUE_SIZE - 1; in nvmet_init_cap()
1230 if (nvmet_is_passthru_subsys(ctrl->subsys)) in nvmet_init_cap()
1241 subsys = nvmet_find_get_subsys(req->port, subsysnqn); in nvmet_ctrl_find_get()
1245 req->cqe->result.u32 = IPO_IATTR_CONNECT_DATA(subsysnqn); in nvmet_ctrl_find_get()
1249 mutex_lock(&subsys->lock); in nvmet_ctrl_find_get()
1250 list_for_each_entry(ctrl, &subsys->ctrls, subsys_entry) { in nvmet_ctrl_find_get()
1251 if (ctrl->cntlid == cntlid) { in nvmet_ctrl_find_get()
1252 if (strncmp(hostnqn, ctrl->hostnqn, NVMF_NQN_SIZE)) { in nvmet_ctrl_find_get()
1256 if (!kref_get_unless_zero(&ctrl->ref)) in nvmet_ctrl_find_get()
1267 req->cqe->result.u32 = IPO_IATTR_CONNECT_DATA(cntlid); in nvmet_ctrl_find_get()
1270 mutex_unlock(&subsys->lock); in nvmet_ctrl_find_get()
1278 if (unlikely(!(req->sq->ctrl->cc & NVME_CC_ENABLE))) { in nvmet_check_ctrl_status()
1280 req->cmd->common.opcode, req->sq->qid); in nvmet_check_ctrl_status()
1284 if (unlikely(!(req->sq->ctrl->csts & NVME_CSTS_RDY))) { in nvmet_check_ctrl_status()
1286 req->cmd->common.opcode, req->sq->qid); in nvmet_check_ctrl_status()
1291 pr_warn("qid %d not authenticated\n", req->sq->qid); in nvmet_check_ctrl_status()
1303 if (subsys->allow_any_host) in nvmet_host_allowed()
1309 list_for_each_entry(p, &subsys->hosts, entry) { in nvmet_host_allowed()
1310 if (!strcmp(nvmet_host_name(p->host), hostnqn)) in nvmet_host_allowed()
1318 * Note: ctrl->subsys->lock should be held when calling this function
1326 if (!req->p2p_client) in nvmet_setup_p2p_ns_map()
1329 ctrl->p2p_client = get_device(req->p2p_client); in nvmet_setup_p2p_ns_map()
1331 xa_for_each(&ctrl->subsys->namespaces, idx, ns) in nvmet_setup_p2p_ns_map()
1336 * Note: ctrl->subsys->lock should be held when calling this function
1343 radix_tree_for_each_slot(slot, &ctrl->p2p_ns_map, &iter, 0) in nvmet_release_p2p_ns_map()
1346 put_device(ctrl->p2p_client); in nvmet_release_p2p_ns_map()
1354 pr_err("ctrl %d fatal error occurred!\n", ctrl->cntlid); in nvmet_fatal_error_handler()
1355 ctrl->ops->delete_ctrl(ctrl); in nvmet_fatal_error_handler()
1367 subsys = nvmet_find_get_subsys(req->port, subsysnqn); in nvmet_alloc_ctrl()
1371 req->cqe->result.u32 = IPO_IATTR_CONNECT_DATA(subsysnqn); in nvmet_alloc_ctrl()
1372 req->error_loc = offsetof(struct nvme_common_command, dptr); in nvmet_alloc_ctrl()
1380 req->cqe->result.u32 = IPO_IATTR_CONNECT_DATA(hostnqn); in nvmet_alloc_ctrl()
1383 req->error_loc = offsetof(struct nvme_common_command, dptr); in nvmet_alloc_ctrl()
1392 mutex_init(&ctrl->lock); in nvmet_alloc_ctrl()
1394 ctrl->port = req->port; in nvmet_alloc_ctrl()
1395 ctrl->ops = req->ops; in nvmet_alloc_ctrl()
1399 if (ctrl->port->disc_addr.trtype == NVMF_TRTYPE_LOOP) in nvmet_alloc_ctrl()
1400 subsys->clear_ids = 1; in nvmet_alloc_ctrl()
1403 INIT_WORK(&ctrl->async_event_work, nvmet_async_event_work); in nvmet_alloc_ctrl()
1404 INIT_LIST_HEAD(&ctrl->async_events); in nvmet_alloc_ctrl()
1405 INIT_RADIX_TREE(&ctrl->p2p_ns_map, GFP_KERNEL); in nvmet_alloc_ctrl()
1406 INIT_WORK(&ctrl->fatal_err_work, nvmet_fatal_error_handler); in nvmet_alloc_ctrl()
1407 INIT_DELAYED_WORK(&ctrl->ka_work, nvmet_keep_alive_timer); in nvmet_alloc_ctrl()
1409 memcpy(ctrl->subsysnqn, subsysnqn, NVMF_NQN_SIZE); in nvmet_alloc_ctrl()
1410 memcpy(ctrl->hostnqn, hostnqn, NVMF_NQN_SIZE); in nvmet_alloc_ctrl()
1412 kref_init(&ctrl->ref); in nvmet_alloc_ctrl()
1413 ctrl->subsys = subsys; in nvmet_alloc_ctrl()
1415 WRITE_ONCE(ctrl->aen_enabled, NVMET_AEN_CFG_OPTIONAL); in nvmet_alloc_ctrl()
1417 ctrl->changed_ns_list = kmalloc_array(NVME_MAX_CHANGED_NAMESPACES, in nvmet_alloc_ctrl()
1419 if (!ctrl->changed_ns_list) in nvmet_alloc_ctrl()
1422 ctrl->sqs = kcalloc(subsys->max_qid + 1, in nvmet_alloc_ctrl()
1425 if (!ctrl->sqs) in nvmet_alloc_ctrl()
1429 subsys->cntlid_min, subsys->cntlid_max, in nvmet_alloc_ctrl()
1435 ctrl->cntlid = ret; in nvmet_alloc_ctrl()
1441 if (nvmet_is_disc_subsys(ctrl->subsys) && !kato) in nvmet_alloc_ctrl()
1444 /* keep-alive timeout in seconds */ in nvmet_alloc_ctrl()
1445 ctrl->kato = DIV_ROUND_UP(kato, 1000); in nvmet_alloc_ctrl()
1447 ctrl->err_counter = 0; in nvmet_alloc_ctrl()
1448 spin_lock_init(&ctrl->error_lock); in nvmet_alloc_ctrl()
1452 mutex_lock(&subsys->lock); in nvmet_alloc_ctrl()
1453 list_add_tail(&ctrl->subsys_entry, &subsys->ctrls); in nvmet_alloc_ctrl()
1455 mutex_unlock(&subsys->lock); in nvmet_alloc_ctrl()
1461 kfree(ctrl->sqs); in nvmet_alloc_ctrl()
1463 kfree(ctrl->changed_ns_list); in nvmet_alloc_ctrl()
1475 struct nvmet_subsys *subsys = ctrl->subsys; in nvmet_ctrl_free()
1477 mutex_lock(&subsys->lock); in nvmet_ctrl_free()
1479 list_del(&ctrl->subsys_entry); in nvmet_ctrl_free()
1480 mutex_unlock(&subsys->lock); in nvmet_ctrl_free()
1484 flush_work(&ctrl->async_event_work); in nvmet_ctrl_free()
1485 cancel_work_sync(&ctrl->fatal_err_work); in nvmet_ctrl_free()
1489 ida_free(&cntlid_ida, ctrl->cntlid); in nvmet_ctrl_free()
1492 kfree(ctrl->sqs); in nvmet_ctrl_free()
1493 kfree(ctrl->changed_ns_list); in nvmet_ctrl_free()
1501 kref_put(&ctrl->ref, nvmet_ctrl_free); in nvmet_ctrl_put()
1506 mutex_lock(&ctrl->lock); in nvmet_ctrl_fatal_error()
1507 if (!(ctrl->csts & NVME_CSTS_CFS)) { in nvmet_ctrl_fatal_error()
1508 ctrl->csts |= NVME_CSTS_CFS; in nvmet_ctrl_fatal_error()
1509 queue_work(nvmet_wq, &ctrl->fatal_err_work); in nvmet_ctrl_fatal_error()
1511 mutex_unlock(&ctrl->lock); in nvmet_ctrl_fatal_error()
1524 if (!kref_get_unless_zero(&nvmet_disc_subsys->ref)) in nvmet_find_get_subsys()
1530 list_for_each_entry(p, &port->subsystems, entry) { in nvmet_find_get_subsys()
1531 if (!strncmp(p->subsys->subsysnqn, subsysnqn, in nvmet_find_get_subsys()
1533 if (!kref_get_unless_zero(&p->subsys->ref)) in nvmet_find_get_subsys()
1536 return p->subsys; in nvmet_find_get_subsys()
1552 return ERR_PTR(-ENOMEM); in nvmet_subsys_alloc()
1554 subsys->ver = NVMET_DEFAULT_VS; in nvmet_subsys_alloc()
1557 bin2hex(subsys->serial, &serial, sizeof(serial)); in nvmet_subsys_alloc()
1559 subsys->model_number = kstrdup(NVMET_DEFAULT_CTRL_MODEL, GFP_KERNEL); in nvmet_subsys_alloc()
1560 if (!subsys->model_number) { in nvmet_subsys_alloc()
1561 ret = -ENOMEM; in nvmet_subsys_alloc()
1565 subsys->ieee_oui = 0; in nvmet_subsys_alloc()
1567 subsys->firmware_rev = kstrndup(UTS_RELEASE, NVMET_FR_MAX_SIZE, GFP_KERNEL); in nvmet_subsys_alloc()
1568 if (!subsys->firmware_rev) { in nvmet_subsys_alloc()
1569 ret = -ENOMEM; in nvmet_subsys_alloc()
1575 subsys->max_qid = NVMET_NR_QUEUES; in nvmet_subsys_alloc()
1579 subsys->max_qid = 0; in nvmet_subsys_alloc()
1582 pr_err("%s: Unknown Subsystem type - %d\n", __func__, type); in nvmet_subsys_alloc()
1583 ret = -EINVAL; in nvmet_subsys_alloc()
1586 subsys->type = type; in nvmet_subsys_alloc()
1587 subsys->subsysnqn = kstrndup(subsysnqn, NVMF_NQN_SIZE, in nvmet_subsys_alloc()
1589 if (!subsys->subsysnqn) { in nvmet_subsys_alloc()
1590 ret = -ENOMEM; in nvmet_subsys_alloc()
1593 subsys->cntlid_min = NVME_CNTLID_MIN; in nvmet_subsys_alloc()
1594 subsys->cntlid_max = NVME_CNTLID_MAX; in nvmet_subsys_alloc()
1595 kref_init(&subsys->ref); in nvmet_subsys_alloc()
1597 mutex_init(&subsys->lock); in nvmet_subsys_alloc()
1598 xa_init(&subsys->namespaces); in nvmet_subsys_alloc()
1599 INIT_LIST_HEAD(&subsys->ctrls); in nvmet_subsys_alloc()
1600 INIT_LIST_HEAD(&subsys->hosts); in nvmet_subsys_alloc()
1605 kfree(subsys->firmware_rev); in nvmet_subsys_alloc()
1607 kfree(subsys->model_number); in nvmet_subsys_alloc()
1618 WARN_ON_ONCE(!xa_empty(&subsys->namespaces)); in nvmet_subsys_free()
1620 xa_destroy(&subsys->namespaces); in nvmet_subsys_free()
1623 kfree(subsys->subsysnqn); in nvmet_subsys_free()
1624 kfree(subsys->model_number); in nvmet_subsys_free()
1625 kfree(subsys->firmware_rev); in nvmet_subsys_free()
1633 mutex_lock(&subsys->lock); in nvmet_subsys_del_ctrls()
1634 list_for_each_entry(ctrl, &subsys->ctrls, subsys_entry) in nvmet_subsys_del_ctrls()
1635 ctrl->ops->delete_ctrl(ctrl); in nvmet_subsys_del_ctrls()
1636 mutex_unlock(&subsys->lock); in nvmet_subsys_del_ctrls()
1641 kref_put(&subsys->ref, nvmet_subsys_free); in nvmet_subsys_put()
1646 int error = -ENOMEM; in nvmet_init()
1650 nvmet_bvec_cache = kmem_cache_create("nvmet-bvec", in nvmet_init()
1654 return -ENOMEM; in nvmet_init()
1656 zbd_wq = alloc_workqueue("nvmet-zbd-wq", WQ_MEM_RECLAIM, 0); in nvmet_init()
1660 buffered_io_wq = alloc_workqueue("nvmet-buffered-io-wq", in nvmet_init()
1665 nvmet_wq = alloc_workqueue("nvmet-wq", WQ_MEM_RECLAIM, 0); in nvmet_init()