[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>
2010-12-17 12:11:26 -07:00
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#ifndef TARGET_CORE_TRANSPORT_H
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#define TARGET_CORE_TRANSPORT_H
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#define TARGET_CORE_VERSION TARGET_CORE_MOD_VERSION
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/* Attempts before moving from SHORT to LONG */
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#define PYX_TRANSPORT_WINDOW_CLOSED_THRESHOLD 3
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#define PYX_TRANSPORT_WINDOW_CLOSED_WAIT_SHORT 3 /* In milliseconds */
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#define PYX_TRANSPORT_WINDOW_CLOSED_WAIT_LONG 10 /* In milliseconds */
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#define PYX_TRANSPORT_STATUS_INTERVAL 5 /* In seconds */
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#define TRANSPORT_PLUGIN_PHBA_PDEV 1
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#define TRANSPORT_PLUGIN_VHBA_PDEV 2
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#define TRANSPORT_PLUGIN_VHBA_VDEV 3
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/*
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* struct se_subsystem_dev->su_dev_flags
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*/
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#define SDF_FIRMWARE_VPD_UNIT_SERIAL 0x00000001
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#define SDF_EMULATED_VPD_UNIT_SERIAL 0x00000002
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#define SDF_USING_UDEV_PATH 0x00000004
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#define SDF_USING_ALIAS 0x00000008
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/*
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* struct se_device->dev_flags
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*/
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#define DF_READ_ONLY 0x00000001
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#define DF_SPC2_RESERVATIONS 0x00000002
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#define DF_SPC2_RESERVATIONS_WITH_ISID 0x00000004
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/* struct se_dev_attrib sanity values */
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/* Default max_unmap_lba_count */
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#define DA_MAX_UNMAP_LBA_COUNT 0
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/* Default max_unmap_block_desc_count */
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#define DA_MAX_UNMAP_BLOCK_DESC_COUNT 0
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/* Default unmap_granularity */
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#define DA_UNMAP_GRANULARITY_DEFAULT 0
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/* Default unmap_granularity_alignment */
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#define DA_UNMAP_GRANULARITY_ALIGNMENT_DEFAULT 0
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/* Emulation for Direct Page Out */
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#define DA_EMULATE_DPO 0
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/* Emulation for Forced Unit Access WRITEs */
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#define DA_EMULATE_FUA_WRITE 1
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/* Emulation for Forced Unit Access READs */
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#define DA_EMULATE_FUA_READ 0
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/* Emulation for WriteCache and SYNCHRONIZE_CACHE */
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#define DA_EMULATE_WRITE_CACHE 0
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/* Emulation for UNIT ATTENTION Interlock Control */
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#define DA_EMULATE_UA_INTLLCK_CTRL 0
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/* Emulation for TASK_ABORTED status (TAS) by default */
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#define DA_EMULATE_TAS 1
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/* Emulation for Thin Provisioning UNMAP using block/blk-lib.c:blkdev_issue_discard() */
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#define DA_EMULATE_TPU 0
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/*
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* Emulation for Thin Provisioning WRITE_SAME w/ UNMAP=1 bit using
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* block/blk-lib.c:blkdev_issue_discard()
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*/
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#define DA_EMULATE_TPWS 0
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/* No Emulation for PSCSI by default */
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#define DA_EMULATE_RESERVATIONS 0
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/* No Emulation for PSCSI by default */
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#define DA_EMULATE_ALUA 0
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/* Enforce SCSI Initiator Port TransportID with 'ISID' for PR */
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#define DA_ENFORCE_PR_ISIDS 1
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#define DA_STATUS_MAX_SECTORS_MIN 16
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#define DA_STATUS_MAX_SECTORS_MAX 8192
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2011-07-05 13:34:52 -07:00
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/* By default don't report non-rotating (solid state) medium */
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#define DA_IS_NONROT 0
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2011-07-17 02:57:58 -07:00
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/* Queue Algorithm Modifier default for restricted reordering in control mode page */
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#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>
2010-12-17 12:11:26 -07:00
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#define SE_MODE_PAGE_BUF 512
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#define MOD_MAX_SECTORS(ms, bs) (ms % (PAGE_SIZE / bs))
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struct se_subsystem_api;
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2011-07-19 01:55:10 -07:00
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extern int init_se_kmem_caches(void);
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extern void release_se_kmem_caches(void);
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2011-02-09 16:35:03 -07:00
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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>
2010-12-17 12:11:26 -07:00
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extern void transport_init_queue_obj(struct se_queue_obj *);
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2011-10-22 01:03:54 -07:00
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extern void transport_subsystem_check_init(void);
|
[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>
2010-12-17 12:11:26 -07:00
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extern int transport_subsystem_register(struct se_subsystem_api *);
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extern void transport_subsystem_release(struct se_subsystem_api *);
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extern void transport_load_plugins(void);
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extern struct se_session *transport_init_session(void);
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extern void __transport_register_session(struct se_portal_group *,
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struct se_node_acl *,
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struct se_session *, void *);
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extern void transport_register_session(struct se_portal_group *,
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struct se_node_acl *,
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struct se_session *, void *);
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extern void transport_free_session(struct se_session *);
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extern void transport_deregister_session_configfs(struct se_session *);
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extern void transport_deregister_session(struct se_session *);
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extern void transport_cmd_finish_abort(struct se_cmd *, int);
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extern void transport_complete_sync_cache(struct se_cmd *, int);
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extern void transport_complete_task(struct se_task *, int);
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extern void transport_add_task_to_execute_queue(struct se_task *,
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struct se_task *,
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struct se_device *);
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2011-02-24 17:58:20 -07:00
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extern void transport_remove_task_from_execute_queue(struct se_task *,
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struct se_device *);
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2011-10-12 08:07:04 -07:00
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extern void __transport_remove_task_from_execute_queue(struct se_task *,
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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>
2010-12-17 12:11:26 -07:00
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unsigned char *transport_dump_cmd_direction(struct se_cmd *);
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extern void transport_dump_dev_state(struct se_device *, char *, int *);
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extern void transport_dump_dev_info(struct se_device *, struct se_lun *,
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unsigned long long, char *, int *);
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extern void transport_dump_vpd_proto_id(struct t10_vpd *,
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unsigned char *, int);
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extern void transport_set_vpd_proto_id(struct t10_vpd *, unsigned char *);
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extern int transport_dump_vpd_assoc(struct t10_vpd *,
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unsigned char *, int);
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extern int transport_set_vpd_assoc(struct t10_vpd *, unsigned char *);
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extern int transport_dump_vpd_ident_type(struct t10_vpd *,
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unsigned char *, int);
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extern int transport_set_vpd_ident_type(struct t10_vpd *, unsigned char *);
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extern int transport_dump_vpd_ident(struct t10_vpd *,
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unsigned char *, int);
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extern int transport_set_vpd_ident(struct t10_vpd *, unsigned char *);
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extern struct se_device *transport_add_device_to_core_hba(struct se_hba *,
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struct se_subsystem_api *,
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struct se_subsystem_dev *, u32,
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void *, struct se_dev_limits *,
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const char *, const char *);
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extern void transport_init_se_cmd(struct se_cmd *,
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struct target_core_fabric_ops *,
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struct se_session *, u32, int, int,
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unsigned char *);
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2011-07-20 12:13:28 -07:00
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void *transport_kmap_first_data_page(struct se_cmd *cmd);
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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>
2010-12-17 12:11:26 -07:00
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extern int transport_generic_allocate_tasks(struct se_cmd *, unsigned char *);
|
2011-06-03 20:59:19 -07:00
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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>
2010-12-17 12:11:26 -07:00
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extern int transport_generic_handle_cdb_map(struct se_cmd *);
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extern int transport_generic_handle_data(struct se_cmd *);
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extern int transport_generic_handle_tmr(struct se_cmd *);
|
2011-10-17 10:56:46 -07:00
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extern bool target_stop_task(struct se_task *task, unsigned long *flags);
|
[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>
2010-12-17 12:11:26 -07:00
|
|
|
extern int transport_generic_map_mem_to_cmd(struct se_cmd *cmd, struct scatterlist *, u32,
|
|
|
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struct scatterlist *, u32);
|
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|
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extern int transport_clear_lun_from_sessions(struct se_lun *);
|
2011-11-02 21:52:08 -07:00
|
|
|
extern bool transport_wait_for_tasks(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>
2010-12-17 12:11:26 -07:00
|
|
|
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 *);
|
2011-05-31 20:56:57 -07:00
|
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|
extern void transport_release_cmd(struct se_cmd *);
|
2011-10-08 13:59:52 -07:00
|
|
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extern void transport_generic_free_cmd(struct se_cmd *, int);
|
2011-11-02 21:52:08 -07:00
|
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|
extern void target_get_sess_cmd(struct se_session *, struct se_cmd *);
|
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|
extern int target_put_sess_cmd(struct se_session *, struct se_cmd *);
|
|
|
|
extern void target_splice_sess_cmd_list(struct se_session *);
|
|
|
|
extern void target_wait_for_sess_cmds(struct se_session *, 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>
2010-12-17 12:11:26 -07:00
|
|
|
extern void transport_generic_wait_for_cmds(struct se_cmd *, int);
|
|
|
|
extern void transport_do_task_sg_chain(struct se_cmd *);
|
|
|
|
extern void transport_generic_process_write(struct se_cmd *);
|
2011-05-02 17:12:10 -07:00
|
|
|
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>
2010-12-17 12:11:26 -07:00
|
|
|
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 04:06:01 -07:00
|
|
|
/* From target_core_cdb.c */
|
|
|
|
extern int transport_emulate_control_cdb(struct se_task *);
|
2011-10-12 08:09:12 -07:00
|
|
|
extern void target_get_task_cdb(struct se_task *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>
2010-12-17 12:11:26 -07:00
|
|
|
|
|
|
|
/*
|
|
|
|
* 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;
|
2011-10-14 04:30:17 -07:00
|
|
|
|
|
|
|
unsigned int fua_write_emulated : 1;
|
|
|
|
unsigned int write_cache_emulated : 1;
|
|
|
|
|
[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>
2010-12-17 12:11:26 -07:00
|
|
|
/*
|
|
|
|
* struct module for struct se_hba references
|
|
|
|
*/
|
|
|
|
struct module *owner;
|
|
|
|
/*
|
|
|
|
* Used for global se_subsystem_api list_head
|
|
|
|
*/
|
|
|
|
struct list_head sub_api_list;
|
|
|
|
/*
|
|
|
|
* 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 *);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* transport_complete():
|
|
|
|
*
|
|
|
|
* Use transport_generic_complete() for majority of DAS transport
|
|
|
|
* drivers. Provided out of convenience.
|
|
|
|
*/
|
|
|
|
int (*transport_complete)(struct se_task *task);
|
2011-06-08 10:36:43 -07:00
|
|
|
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>
2010-12-17 12:11:26 -07:00
|
|
|
/*
|
|
|
|
* 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_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 */
|