[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-18 03:11:26 +08:00
|
|
|
#ifndef TARGET_CORE_TRANSPORT_H
|
|
|
|
#define TARGET_CORE_TRANSPORT_H
|
|
|
|
|
|
|
|
#define TARGET_CORE_VERSION TARGET_CORE_MOD_VERSION
|
|
|
|
|
|
|
|
/* Attempts before moving from SHORT to LONG */
|
|
|
|
#define PYX_TRANSPORT_WINDOW_CLOSED_THRESHOLD 3
|
|
|
|
#define PYX_TRANSPORT_WINDOW_CLOSED_WAIT_SHORT 3 /* In milliseconds */
|
|
|
|
#define PYX_TRANSPORT_WINDOW_CLOSED_WAIT_LONG 10 /* In milliseconds */
|
|
|
|
|
|
|
|
#define PYX_TRANSPORT_STATUS_INTERVAL 5 /* In seconds */
|
|
|
|
|
|
|
|
#define PYX_TRANSPORT_SENT_TO_TRANSPORT 0
|
|
|
|
#define PYX_TRANSPORT_WRITE_PENDING 1
|
|
|
|
|
|
|
|
#define PYX_TRANSPORT_UNKNOWN_SAM_OPCODE -1
|
|
|
|
#define PYX_TRANSPORT_HBA_QUEUE_FULL -2
|
|
|
|
#define PYX_TRANSPORT_REQ_TOO_MANY_SECTORS -3
|
|
|
|
#define PYX_TRANSPORT_OUT_OF_MEMORY_RESOURCES -4
|
|
|
|
#define PYX_TRANSPORT_INVALID_CDB_FIELD -5
|
|
|
|
#define PYX_TRANSPORT_INVALID_PARAMETER_LIST -6
|
|
|
|
#define PYX_TRANSPORT_LU_COMM_FAILURE -7
|
|
|
|
#define PYX_TRANSPORT_UNKNOWN_MODE_PAGE -8
|
|
|
|
#define PYX_TRANSPORT_WRITE_PROTECTED -9
|
|
|
|
#define PYX_TRANSPORT_TASK_TIMEOUT -10
|
|
|
|
#define PYX_TRANSPORT_RESERVATION_CONFLICT -11
|
|
|
|
#define PYX_TRANSPORT_ILLEGAL_REQUEST -12
|
|
|
|
#define PYX_TRANSPORT_USE_SENSE_REASON -13
|
|
|
|
|
|
|
|
#ifndef SAM_STAT_RESERVATION_CONFLICT
|
|
|
|
#define SAM_STAT_RESERVATION_CONFLICT 0x18
|
|
|
|
#endif
|
|
|
|
|
|
|
|
#define TRANSPORT_PLUGIN_FREE 0
|
|
|
|
#define TRANSPORT_PLUGIN_REGISTERED 1
|
|
|
|
|
|
|
|
#define TRANSPORT_PLUGIN_PHBA_PDEV 1
|
|
|
|
#define TRANSPORT_PLUGIN_VHBA_PDEV 2
|
|
|
|
#define TRANSPORT_PLUGIN_VHBA_VDEV 3
|
|
|
|
|
|
|
|
/* For SE OBJ Plugins, in seconds */
|
|
|
|
#define TRANSPORT_TIMEOUT_TUR 10
|
|
|
|
#define TRANSPORT_TIMEOUT_TYPE_DISK 60
|
|
|
|
#define TRANSPORT_TIMEOUT_TYPE_ROM 120
|
|
|
|
#define TRANSPORT_TIMEOUT_TYPE_TAPE 600
|
|
|
|
#define TRANSPORT_TIMEOUT_TYPE_OTHER 300
|
|
|
|
|
|
|
|
/* For se_task->task_state_flags */
|
|
|
|
#define TSF_EXCEPTION_CLEARED 0x01
|
|
|
|
|
|
|
|
/*
|
|
|
|
* struct se_subsystem_dev->su_dev_flags
|
|
|
|
*/
|
|
|
|
#define SDF_FIRMWARE_VPD_UNIT_SERIAL 0x00000001
|
|
|
|
#define SDF_EMULATED_VPD_UNIT_SERIAL 0x00000002
|
|
|
|
#define SDF_USING_UDEV_PATH 0x00000004
|
|
|
|
#define SDF_USING_ALIAS 0x00000008
|
|
|
|
|
|
|
|
/*
|
|
|
|
* struct se_device->dev_flags
|
|
|
|
*/
|
|
|
|
#define DF_READ_ONLY 0x00000001
|
|
|
|
#define DF_SPC2_RESERVATIONS 0x00000002
|
|
|
|
#define DF_SPC2_RESERVATIONS_WITH_ISID 0x00000004
|
|
|
|
|
|
|
|
/* struct se_dev_attrib sanity values */
|
|
|
|
/* 10 Minutes */
|
|
|
|
#define DA_TASK_TIMEOUT_MAX 600
|
|
|
|
/* Default max_unmap_lba_count */
|
|
|
|
#define DA_MAX_UNMAP_LBA_COUNT 0
|
|
|
|
/* Default max_unmap_block_desc_count */
|
|
|
|
#define DA_MAX_UNMAP_BLOCK_DESC_COUNT 0
|
|
|
|
/* Default unmap_granularity */
|
|
|
|
#define DA_UNMAP_GRANULARITY_DEFAULT 0
|
|
|
|
/* Default unmap_granularity_alignment */
|
|
|
|
#define DA_UNMAP_GRANULARITY_ALIGNMENT_DEFAULT 0
|
|
|
|
/* Emulation for Direct Page Out */
|
|
|
|
#define DA_EMULATE_DPO 0
|
|
|
|
/* Emulation for Forced Unit Access WRITEs */
|
|
|
|
#define DA_EMULATE_FUA_WRITE 1
|
|
|
|
/* Emulation for Forced Unit Access READs */
|
|
|
|
#define DA_EMULATE_FUA_READ 0
|
|
|
|
/* Emulation for WriteCache and SYNCHRONIZE_CACHE */
|
|
|
|
#define DA_EMULATE_WRITE_CACHE 0
|
|
|
|
/* Emulation for UNIT ATTENTION Interlock Control */
|
|
|
|
#define DA_EMULATE_UA_INTLLCK_CTRL 0
|
|
|
|
/* Emulation for TASK_ABORTED status (TAS) by default */
|
|
|
|
#define DA_EMULATE_TAS 1
|
|
|
|
/* Emulation for Thin Provisioning UNMAP using block/blk-lib.c:blkdev_issue_discard() */
|
|
|
|
#define DA_EMULATE_TPU 0
|
|
|
|
/*
|
|
|
|
* Emulation for Thin Provisioning WRITE_SAME w/ UNMAP=1 bit using
|
|
|
|
* block/blk-lib.c:blkdev_issue_discard()
|
|
|
|
*/
|
|
|
|
#define DA_EMULATE_TPWS 0
|
|
|
|
/* No Emulation for PSCSI by default */
|
|
|
|
#define DA_EMULATE_RESERVATIONS 0
|
|
|
|
/* No Emulation for PSCSI by default */
|
|
|
|
#define DA_EMULATE_ALUA 0
|
|
|
|
/* Enforce SCSI Initiator Port TransportID with 'ISID' for PR */
|
|
|
|
#define DA_ENFORCE_PR_ISIDS 1
|
|
|
|
#define DA_STATUS_MAX_SECTORS_MIN 16
|
|
|
|
#define DA_STATUS_MAX_SECTORS_MAX 8192
|
2011-07-06 04:34:52 +08:00
|
|
|
/* By default don't report non-rotating (solid state) medium */
|
|
|
|
#define DA_IS_NONROT 0
|
2011-07-17 17:57:58 +08:00
|
|
|
/* Queue Algorithm Modifier default for restricted reordering in control mode page */
|
|
|
|
#define DA_EMULATE_REST_REORD 0
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-18 03:11:26 +08:00
|
|
|
|
|
|
|
#define SE_MODE_PAGE_BUF 512
|
|
|
|
|
|
|
|
#define MOD_MAX_SECTORS(ms, bs) (ms % (PAGE_SIZE / bs))
|
|
|
|
|
|
|
|
struct se_mem;
|
|
|
|
struct se_subsystem_api;
|
|
|
|
|
2011-03-14 19:06:01 +08:00
|
|
|
extern struct kmem_cache *se_mem_cache;
|
|
|
|
|
2011-07-19 16:55:10 +08:00
|
|
|
extern int init_se_kmem_caches(void);
|
|
|
|
extern void release_se_kmem_caches(void);
|
2011-02-10 07:35:03 +08:00
|
|
|
extern u32 scsi_get_new_index(scsi_index_t);
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-18 03:11:26 +08:00
|
|
|
extern void transport_init_queue_obj(struct se_queue_obj *);
|
|
|
|
extern int transport_subsystem_check_init(void);
|
|
|
|
extern int transport_subsystem_register(struct se_subsystem_api *);
|
|
|
|
extern void transport_subsystem_release(struct se_subsystem_api *);
|
|
|
|
extern void transport_load_plugins(void);
|
|
|
|
extern struct se_session *transport_init_session(void);
|
|
|
|
extern void __transport_register_session(struct se_portal_group *,
|
|
|
|
struct se_node_acl *,
|
|
|
|
struct se_session *, void *);
|
|
|
|
extern void transport_register_session(struct se_portal_group *,
|
|
|
|
struct se_node_acl *,
|
|
|
|
struct se_session *, void *);
|
|
|
|
extern void transport_free_session(struct se_session *);
|
|
|
|
extern void transport_deregister_session_configfs(struct se_session *);
|
|
|
|
extern void transport_deregister_session(struct se_session *);
|
|
|
|
extern void transport_cmd_finish_abort(struct se_cmd *, int);
|
|
|
|
extern void transport_cmd_finish_abort_tmr(struct se_cmd *);
|
|
|
|
extern void transport_complete_sync_cache(struct se_cmd *, int);
|
|
|
|
extern void transport_complete_task(struct se_task *, int);
|
|
|
|
extern void transport_add_task_to_execute_queue(struct se_task *,
|
|
|
|
struct se_task *,
|
|
|
|
struct se_device *);
|
2011-02-25 08:58:20 +08:00
|
|
|
extern void transport_remove_task_from_execute_queue(struct se_task *,
|
|
|
|
struct se_device *);
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-18 03:11:26 +08:00
|
|
|
unsigned char *transport_dump_cmd_direction(struct se_cmd *);
|
|
|
|
extern void transport_dump_dev_state(struct se_device *, char *, int *);
|
|
|
|
extern void transport_dump_dev_info(struct se_device *, struct se_lun *,
|
|
|
|
unsigned long long, char *, int *);
|
|
|
|
extern void transport_dump_vpd_proto_id(struct t10_vpd *,
|
|
|
|
unsigned char *, int);
|
|
|
|
extern void transport_set_vpd_proto_id(struct t10_vpd *, unsigned char *);
|
|
|
|
extern int transport_dump_vpd_assoc(struct t10_vpd *,
|
|
|
|
unsigned char *, int);
|
|
|
|
extern int transport_set_vpd_assoc(struct t10_vpd *, unsigned char *);
|
|
|
|
extern int transport_dump_vpd_ident_type(struct t10_vpd *,
|
|
|
|
unsigned char *, int);
|
|
|
|
extern int transport_set_vpd_ident_type(struct t10_vpd *, unsigned char *);
|
|
|
|
extern int transport_dump_vpd_ident(struct t10_vpd *,
|
|
|
|
unsigned char *, int);
|
|
|
|
extern int transport_set_vpd_ident(struct t10_vpd *, unsigned char *);
|
|
|
|
extern struct se_device *transport_add_device_to_core_hba(struct se_hba *,
|
|
|
|
struct se_subsystem_api *,
|
|
|
|
struct se_subsystem_dev *, u32,
|
|
|
|
void *, struct se_dev_limits *,
|
|
|
|
const char *, const char *);
|
|
|
|
extern void transport_init_se_cmd(struct se_cmd *,
|
|
|
|
struct target_core_fabric_ops *,
|
|
|
|
struct se_session *, u32, int, int,
|
|
|
|
unsigned char *);
|
2011-07-21 03:13:28 +08:00
|
|
|
void *transport_kmap_first_data_page(struct se_cmd *cmd);
|
|
|
|
void transport_kunmap_first_data_page(struct se_cmd *cmd);
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-18 03:11:26 +08:00
|
|
|
extern int transport_generic_allocate_tasks(struct se_cmd *, unsigned char *);
|
2011-06-04 11:59:19 +08:00
|
|
|
extern int transport_handle_cdb_direct(struct se_cmd *);
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-18 03:11:26 +08:00
|
|
|
extern int transport_generic_handle_cdb_map(struct se_cmd *);
|
|
|
|
extern int transport_generic_handle_data(struct se_cmd *);
|
|
|
|
extern void transport_new_cmd_failure(struct se_cmd *);
|
|
|
|
extern int transport_generic_handle_tmr(struct se_cmd *);
|
2011-05-20 11:19:11 +08:00
|
|
|
extern void transport_generic_free_cmd_intr(struct se_cmd *);
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-18 03:11:26 +08:00
|
|
|
extern void __transport_stop_task_timer(struct se_task *, unsigned long *);
|
|
|
|
extern int transport_generic_map_mem_to_cmd(struct se_cmd *cmd, struct scatterlist *, u32,
|
|
|
|
struct scatterlist *, u32);
|
|
|
|
extern int transport_clear_lun_from_sessions(struct se_lun *);
|
|
|
|
extern int transport_check_aborted_status(struct se_cmd *, int);
|
|
|
|
extern int transport_send_check_condition_and_sense(struct se_cmd *, u8, int);
|
|
|
|
extern void transport_send_task_abort(struct se_cmd *);
|
2011-06-01 11:56:57 +08:00
|
|
|
extern void transport_release_cmd(struct se_cmd *);
|
2011-09-14 05:09:01 +08:00
|
|
|
extern bool transport_generic_free_cmd(struct se_cmd *, int);
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-18 03:11:26 +08:00
|
|
|
extern void transport_generic_wait_for_cmds(struct se_cmd *, int);
|
2011-07-19 16:55:10 +08:00
|
|
|
extern int transport_init_task_sg(struct se_task *, struct se_mem *, u32);
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-18 03:11:26 +08:00
|
|
|
extern int transport_map_mem_to_sg(struct se_task *, struct list_head *,
|
2011-05-03 08:12:10 +08:00
|
|
|
struct scatterlist *, struct se_mem *,
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-18 03:11:26 +08:00
|
|
|
struct se_mem **, u32 *, u32 *);
|
|
|
|
extern void transport_do_task_sg_chain(struct se_cmd *);
|
|
|
|
extern void transport_generic_process_write(struct se_cmd *);
|
2011-05-03 08:12:10 +08:00
|
|
|
extern int transport_generic_new_cmd(struct se_cmd *);
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-18 03:11:26 +08:00
|
|
|
extern int transport_generic_do_tmr(struct se_cmd *);
|
|
|
|
/* From target_core_alua.c */
|
|
|
|
extern int core_alua_check_nonop_delay(struct se_cmd *);
|
2011-03-14 19:06:01 +08:00
|
|
|
/* From target_core_cdb.c */
|
|
|
|
extern int transport_emulate_control_cdb(struct se_task *);
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-18 03:11:26 +08:00
|
|
|
|
|
|
|
/*
|
|
|
|
* Each se_transport_task_t can have N number of possible struct se_task's
|
|
|
|
* for the storage transport(s) to possibly execute.
|
|
|
|
* Used primarily for splitting up CDBs that exceed the physical storage
|
|
|
|
* HBA's maximum sector count per task.
|
|
|
|
*/
|
|
|
|
struct se_mem {
|
|
|
|
struct page *se_page;
|
|
|
|
u32 se_len;
|
|
|
|
u32 se_off;
|
|
|
|
struct list_head se_list;
|
|
|
|
} ____cacheline_aligned;
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Each type of disk transport supported MUST have a template defined
|
|
|
|
* within its .h file.
|
|
|
|
*/
|
|
|
|
struct se_subsystem_api {
|
|
|
|
/*
|
|
|
|
* The Name. :-)
|
|
|
|
*/
|
|
|
|
char name[16];
|
|
|
|
/*
|
|
|
|
* Transport Type.
|
|
|
|
*/
|
|
|
|
u8 transport_type;
|
|
|
|
/*
|
|
|
|
* struct module for struct se_hba references
|
|
|
|
*/
|
|
|
|
struct module *owner;
|
|
|
|
/*
|
|
|
|
* Used for global se_subsystem_api list_head
|
|
|
|
*/
|
|
|
|
struct list_head sub_api_list;
|
|
|
|
/*
|
|
|
|
* For SCF_SCSI_NON_DATA_CDB
|
|
|
|
*/
|
|
|
|
int (*cdb_none)(struct se_task *);
|
|
|
|
/*
|
2011-07-21 12:41:48 +08:00
|
|
|
* For SCF_SCSI_DATA_SG_IO_CDB
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-18 03:11:26 +08:00
|
|
|
*/
|
2011-07-21 12:41:48 +08:00
|
|
|
int (*map_data_SG)(struct se_task *);
|
|
|
|
/*
|
|
|
|
* For SCF_SCSI_CONTROL_SG_IO_CDB
|
|
|
|
*/
|
|
|
|
int (*map_control_SG)(struct se_task *);
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-18 03:11:26 +08:00
|
|
|
/*
|
|
|
|
* attach_hba():
|
|
|
|
*/
|
|
|
|
int (*attach_hba)(struct se_hba *, u32);
|
|
|
|
/*
|
|
|
|
* detach_hba():
|
|
|
|
*/
|
|
|
|
void (*detach_hba)(struct se_hba *);
|
|
|
|
/*
|
|
|
|
* pmode_hba(): Used for TCM/pSCSI subsystem plugin HBA ->
|
|
|
|
* Linux/SCSI struct Scsi_Host passthrough
|
|
|
|
*/
|
|
|
|
int (*pmode_enable_hba)(struct se_hba *, unsigned long);
|
|
|
|
/*
|
|
|
|
* allocate_virtdevice():
|
|
|
|
*/
|
|
|
|
void *(*allocate_virtdevice)(struct se_hba *, const char *);
|
|
|
|
/*
|
|
|
|
* create_virtdevice(): Only for Virtual HBAs
|
|
|
|
*/
|
|
|
|
struct se_device *(*create_virtdevice)(struct se_hba *,
|
|
|
|
struct se_subsystem_dev *, void *);
|
|
|
|
/*
|
|
|
|
* free_device():
|
|
|
|
*/
|
|
|
|
void (*free_device)(void *);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* dpo_emulated():
|
|
|
|
*/
|
|
|
|
int (*dpo_emulated)(struct se_device *);
|
|
|
|
/*
|
|
|
|
* fua_write_emulated():
|
|
|
|
*/
|
|
|
|
int (*fua_write_emulated)(struct se_device *);
|
|
|
|
/*
|
|
|
|
* fua_read_emulated():
|
|
|
|
*/
|
|
|
|
int (*fua_read_emulated)(struct se_device *);
|
|
|
|
/*
|
|
|
|
* write_cache_emulated():
|
|
|
|
*/
|
|
|
|
int (*write_cache_emulated)(struct se_device *);
|
|
|
|
/*
|
|
|
|
* transport_complete():
|
|
|
|
*
|
|
|
|
* Use transport_generic_complete() for majority of DAS transport
|
|
|
|
* drivers. Provided out of convenience.
|
|
|
|
*/
|
|
|
|
int (*transport_complete)(struct se_task *task);
|
2011-06-09 01:36:43 +08:00
|
|
|
struct se_task *(*alloc_task)(unsigned char *cdb);
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-18 03:11:26 +08:00
|
|
|
/*
|
|
|
|
* do_task():
|
|
|
|
*/
|
|
|
|
int (*do_task)(struct se_task *);
|
|
|
|
/*
|
|
|
|
* Used by virtual subsystem plugins IBLOCK and FILEIO to emulate
|
|
|
|
* UNMAP and WRITE_SAME_* w/ UNMAP=1 <-> Linux/Block Discard
|
|
|
|
*/
|
|
|
|
int (*do_discard)(struct se_device *, sector_t, u32);
|
|
|
|
/*
|
|
|
|
* Used by virtual subsystem plugins IBLOCK and FILEIO to emulate
|
|
|
|
* SYNCHRONIZE_CACHE_* <-> Linux/Block blkdev_issue_flush()
|
|
|
|
*/
|
|
|
|
void (*do_sync_cache)(struct se_task *);
|
|
|
|
/*
|
|
|
|
* free_task():
|
|
|
|
*/
|
|
|
|
void (*free_task)(struct se_task *);
|
|
|
|
/*
|
|
|
|
* check_configfs_dev_params():
|
|
|
|
*/
|
|
|
|
ssize_t (*check_configfs_dev_params)(struct se_hba *, struct se_subsystem_dev *);
|
|
|
|
/*
|
|
|
|
* set_configfs_dev_params():
|
|
|
|
*/
|
|
|
|
ssize_t (*set_configfs_dev_params)(struct se_hba *, struct se_subsystem_dev *,
|
|
|
|
const char *, ssize_t);
|
|
|
|
/*
|
|
|
|
* show_configfs_dev_params():
|
|
|
|
*/
|
|
|
|
ssize_t (*show_configfs_dev_params)(struct se_hba *, struct se_subsystem_dev *,
|
|
|
|
char *);
|
|
|
|
/*
|
|
|
|
* get_cdb():
|
|
|
|
*/
|
|
|
|
unsigned char *(*get_cdb)(struct se_task *);
|
|
|
|
/*
|
|
|
|
* get_device_rev():
|
|
|
|
*/
|
|
|
|
u32 (*get_device_rev)(struct se_device *);
|
|
|
|
/*
|
|
|
|
* get_device_type():
|
|
|
|
*/
|
|
|
|
u32 (*get_device_type)(struct se_device *);
|
|
|
|
/*
|
|
|
|
* Get the sector_t from a subsystem backstore..
|
|
|
|
*/
|
|
|
|
sector_t (*get_blocks)(struct se_device *);
|
|
|
|
/*
|
|
|
|
* get_sense_buffer():
|
|
|
|
*/
|
|
|
|
unsigned char *(*get_sense_buffer)(struct se_task *);
|
|
|
|
} ____cacheline_aligned;
|
|
|
|
|
|
|
|
#endif /* TARGET_CORE_TRANSPORT_H */
|