linux-imx
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committed d0ad69043d7x
static int nvme_loop_init_admin_hctx(struct blk_mq_hw_ctx *hctx, void *data,// SPDX-License-Identifier: GPL-2.0/* * NVMe over Fabrics loopback device. * Copyright (c) 2015-2016 HGST, a Western Digital Company. */struct nvme_loop_iod { struct nvme_request nvme_req; struct nvme_command cmd; struct nvme_completion rsp; struct nvmet_req req; struct nvme_loop_queue *queue; struct work_struct work; struct sg_table sg_table; struct scatterlist first_sgl[];};struct nvme_loop_ctrl { struct nvme_loop_queue *queues; struct blk_mq_tag_set admin_tag_set; struct list_head list; struct blk_mq_tag_set tag_set; struct nvme_loop_iod async_event_iod; struct nvme_ctrl ctrl; struct nvmet_ctrl *target_ctrl; struct nvmet_port *port;};static inline struct nvme_loop_ctrl *to_loop_ctrl(struct nvme_ctrl *ctrl){ return container_of(ctrl, struct nvme_loop_ctrl, ctrl);}enum nvme_loop_queue_flags { NVME_LOOP_Q_LIVE = 0,};struct nvme_loop_queue { struct nvmet_cq nvme_cq; struct nvmet_sq nvme_sq; struct nvme_loop_ctrl *ctrl; unsigned long flags;};static LIST_HEAD(nvme_loop_ports);static DEFINE_MUTEX(nvme_loop_ports_mutex);static LIST_HEAD(nvme_loop_ctrl_list);static DEFINE_MUTEX(nvme_loop_ctrl_mutex);static void nvme_loop_queue_response(struct nvmet_req *nvme_req);static void nvme_loop_delete_ctrl(struct nvmet_ctrl *ctrl);static const struct nvmet_fabrics_ops nvme_loop_ops;static inline int nvme_loop_queue_idx(struct nvme_loop_queue *queue){ return queue - queue->ctrl->queues;}static void nvme_loop_complete_rq(struct request *req){ struct nvme_loop_iod *iod = blk_mq_rq_to_pdu(req); nvme_cleanup_cmd(req); sg_free_table_chained(&iod->sg_table, true); nvme_complete_rq(req);}static struct blk_mq_tags *nvme_loop_tagset(struct nvme_loop_queue *queue){ u32 queue_idx = nvme_loop_queue_idx(queue); if (queue_idx == 0) return queue->ctrl->admin_tag_set.tags[queue_idx]; return queue->ctrl->tag_set.tags[queue_idx - 1];}