nvmet.h (ab5d0b38c0475d6ff59f1a6ccf7c668b9ec2e0a4) nvmet.h (aaf2e048af2704da5869f27b508b288f36d5c7b7)
1/* SPDX-License-Identifier: GPL-2.0 */
2/*
3 * Copyright (c) 2015-2016 HGST, a Western Digital Company.
4 */
5
6#ifndef _NVMET_H
7#define _NVMET_H
8

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245
246#ifdef CONFIG_NVME_TARGET_PASSTHRU
247 struct nvme_ctrl *passthru_ctrl;
248 char *passthru_ctrl_path;
249 struct config_group passthru_group;
250 unsigned int admin_timeout;
251 unsigned int io_timeout;
252#endif /* CONFIG_NVME_TARGET_PASSTHRU */
1/* SPDX-License-Identifier: GPL-2.0 */
2/*
3 * Copyright (c) 2015-2016 HGST, a Western Digital Company.
4 */
5
6#ifndef _NVMET_H
7#define _NVMET_H
8

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245
246#ifdef CONFIG_NVME_TARGET_PASSTHRU
247 struct nvme_ctrl *passthru_ctrl;
248 char *passthru_ctrl_path;
249 struct config_group passthru_group;
250 unsigned int admin_timeout;
251 unsigned int io_timeout;
252#endif /* CONFIG_NVME_TARGET_PASSTHRU */
253
254#ifdef CONFIG_BLK_DEV_ZONED
255 u8 zasl;
256#endif /* CONFIG_BLK_DEV_ZONED */
253};
254
255static inline struct nvmet_subsys *to_subsys(struct config_item *item)
256{
257 return container_of(to_config_group(item), struct nvmet_subsys, group);
258}
259
260static inline struct nvmet_subsys *namespaces_to_subsys(

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330 struct work_struct work;
331 } f;
332 struct {
333 struct bio inline_bio;
334 struct request *rq;
335 struct work_struct work;
336 bool use_workqueue;
337 } p;
257};
258
259static inline struct nvmet_subsys *to_subsys(struct config_item *item)
260{
261 return container_of(to_config_group(item), struct nvmet_subsys, group);
262}
263
264static inline struct nvmet_subsys *namespaces_to_subsys(

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334 struct work_struct work;
335 } f;
336 struct {
337 struct bio inline_bio;
338 struct request *rq;
339 struct work_struct work;
340 bool use_workqueue;
341 } p;
342#ifdef CONFIG_BLK_DEV_ZONED
343 struct {
344 struct bio inline_bio;
345 struct work_struct zmgmt_work;
346 } z;
347#endif /* CONFIG_BLK_DEV_ZONED */
338 };
339 int sg_cnt;
340 int metadata_sg_cnt;
341 /* data length as parsed from the SGL descriptor: */
342 size_t transfer_len;
343 size_t metadata_len;
344
345 struct nvmet_port *port;
346
347 void (*execute)(struct nvmet_req *req);
348 const struct nvmet_fabrics_ops *ops;
349
350 struct pci_dev *p2p_dev;
351 struct device *p2p_client;
352 u16 error_loc;
353 u64 error_slba;
354};
355
356extern struct workqueue_struct *buffered_io_wq;
348 };
349 int sg_cnt;
350 int metadata_sg_cnt;
351 /* data length as parsed from the SGL descriptor: */
352 size_t transfer_len;
353 size_t metadata_len;
354
355 struct nvmet_port *port;
356
357 void (*execute)(struct nvmet_req *req);
358 const struct nvmet_fabrics_ops *ops;
359
360 struct pci_dev *p2p_dev;
361 struct device *p2p_client;
362 u16 error_loc;
363 u64 error_slba;
364};
365
366extern struct workqueue_struct *buffered_io_wq;
367extern struct workqueue_struct *zbd_wq;
357
358static inline void nvmet_set_result(struct nvmet_req *req, u32 result)
359{
360 req->cqe->result.u32 = cpu_to_le32(result);
361}
362
363/*
364 * NVMe command writes actually are DMA reads for us on the target side.

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398void nvmet_execute_async_event(struct nvmet_req *req);
399void nvmet_start_keep_alive_timer(struct nvmet_ctrl *ctrl);
400void nvmet_stop_keep_alive_timer(struct nvmet_ctrl *ctrl);
401
402u16 nvmet_parse_connect_cmd(struct nvmet_req *req);
403void nvmet_bdev_set_limits(struct block_device *bdev, struct nvme_id_ns *id);
404u16 nvmet_bdev_parse_io_cmd(struct nvmet_req *req);
405u16 nvmet_file_parse_io_cmd(struct nvmet_req *req);
368
369static inline void nvmet_set_result(struct nvmet_req *req, u32 result)
370{
371 req->cqe->result.u32 = cpu_to_le32(result);
372}
373
374/*
375 * NVMe command writes actually are DMA reads for us on the target side.

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409void nvmet_execute_async_event(struct nvmet_req *req);
410void nvmet_start_keep_alive_timer(struct nvmet_ctrl *ctrl);
411void nvmet_stop_keep_alive_timer(struct nvmet_ctrl *ctrl);
412
413u16 nvmet_parse_connect_cmd(struct nvmet_req *req);
414void nvmet_bdev_set_limits(struct block_device *bdev, struct nvme_id_ns *id);
415u16 nvmet_bdev_parse_io_cmd(struct nvmet_req *req);
416u16 nvmet_file_parse_io_cmd(struct nvmet_req *req);
417u16 nvmet_bdev_zns_parse_io_cmd(struct nvmet_req *req);
406u16 nvmet_parse_admin_cmd(struct nvmet_req *req);
407u16 nvmet_parse_discovery_cmd(struct nvmet_req *req);
408u16 nvmet_parse_fabrics_cmd(struct nvmet_req *req);
409
410bool nvmet_req_init(struct nvmet_req *req, struct nvmet_cq *cq,
411 struct nvmet_sq *sq, const struct nvmet_fabrics_ops *ops);
412void nvmet_req_uninit(struct nvmet_req *req);
413bool nvmet_check_transfer_len(struct nvmet_req *req, size_t len);

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525void nvmet_bdev_ns_disable(struct nvmet_ns *ns);
526void nvmet_file_ns_disable(struct nvmet_ns *ns);
527u16 nvmet_bdev_flush(struct nvmet_req *req);
528u16 nvmet_file_flush(struct nvmet_req *req);
529void nvmet_ns_changed(struct nvmet_subsys *subsys, u32 nsid);
530void nvmet_bdev_ns_revalidate(struct nvmet_ns *ns);
531int nvmet_file_ns_revalidate(struct nvmet_ns *ns);
532void nvmet_ns_revalidate(struct nvmet_ns *ns);
418u16 nvmet_parse_admin_cmd(struct nvmet_req *req);
419u16 nvmet_parse_discovery_cmd(struct nvmet_req *req);
420u16 nvmet_parse_fabrics_cmd(struct nvmet_req *req);
421
422bool nvmet_req_init(struct nvmet_req *req, struct nvmet_cq *cq,
423 struct nvmet_sq *sq, const struct nvmet_fabrics_ops *ops);
424void nvmet_req_uninit(struct nvmet_req *req);
425bool nvmet_check_transfer_len(struct nvmet_req *req, size_t len);

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537void nvmet_bdev_ns_disable(struct nvmet_ns *ns);
538void nvmet_file_ns_disable(struct nvmet_ns *ns);
539u16 nvmet_bdev_flush(struct nvmet_req *req);
540u16 nvmet_file_flush(struct nvmet_req *req);
541void nvmet_ns_changed(struct nvmet_subsys *subsys, u32 nsid);
542void nvmet_bdev_ns_revalidate(struct nvmet_ns *ns);
543int nvmet_file_ns_revalidate(struct nvmet_ns *ns);
544void nvmet_ns_revalidate(struct nvmet_ns *ns);
545u16 blk_to_nvme_status(struct nvmet_req *req, blk_status_t blk_sts);
533
546
547bool nvmet_bdev_zns_enable(struct nvmet_ns *ns);
548void nvmet_execute_identify_cns_cs_ctrl(struct nvmet_req *req);
549void nvmet_execute_identify_cns_cs_ns(struct nvmet_req *req);
550void nvmet_bdev_execute_zone_mgmt_recv(struct nvmet_req *req);
551void nvmet_bdev_execute_zone_mgmt_send(struct nvmet_req *req);
552void nvmet_bdev_execute_zone_append(struct nvmet_req *req);
553
534static inline u32 nvmet_rw_data_len(struct nvmet_req *req)
535{
536 return ((u32)le16_to_cpu(req->cmd->rw.length) + 1) <<
537 req->ns->blksize_shift;
538}
539
540static inline u32 nvmet_rw_metadata_len(struct nvmet_req *req)
541{

--- 101 unchanged lines hidden --- 		554static inline u32 nvmet_rw_data_len(struct nvmet_req *req)
555{
556 return ((u32)le16_to_cpu(req->cmd->rw.length) + 1) <<
557 req->ns->blksize_shift;
558}
559
560static inline u32 nvmet_rw_metadata_len(struct nvmet_req *req)
561{

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