2011-11-16 22:46:48 +08:00
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#ifndef TARGET_CORE_FABRIC_H
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#define TARGET_CORE_FABRIC_H
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[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
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struct target_core_fabric_ops {
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2015-04-09 02:01:35 +08:00
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struct module *module;
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const char *name;
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[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
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struct configfs_subsystem *tf_subsys;
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char *(*get_fabric_name)(void);
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u8 (*get_fabric_proto_ident)(struct se_portal_group *);
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char *(*tpg_get_wwn)(struct se_portal_group *);
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u16 (*tpg_get_tag)(struct se_portal_group *);
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u32 (*tpg_get_default_depth)(struct se_portal_group *);
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u32 (*tpg_get_pr_transport_id)(struct se_portal_group *,
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struct se_node_acl *,
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struct t10_pr_registration *, int *,
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unsigned char *);
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u32 (*tpg_get_pr_transport_id_len)(struct se_portal_group *,
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struct se_node_acl *,
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struct t10_pr_registration *, int *);
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char *(*tpg_parse_pr_out_transport_id)(struct se_portal_group *,
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const char *, u32 *, char **);
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int (*tpg_check_demo_mode)(struct se_portal_group *);
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int (*tpg_check_demo_mode_cache)(struct se_portal_group *);
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int (*tpg_check_demo_mode_write_protect)(struct se_portal_group *);
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int (*tpg_check_prod_mode_write_protect)(struct se_portal_group *);
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2011-07-27 08:48:43 +08:00
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/*
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* Optionally used by fabrics to allow demo-mode login, but not
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* expose any TPG LUNs, and return 'not connected' in standard
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* inquiry response
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*/
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int (*tpg_check_demo_mode_login_only)(struct se_portal_group *);
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2015-02-28 14:05:21 +08:00
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/*
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* Optionally used as a configfs tunable to determine when
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* target-core should signal the PROTECT=1 feature bit for
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* backends that don't support T10-PI, so that either fabric
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* HW offload or target-core emulation performs the associated
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* WRITE_STRIP and READ_INSERT operations.
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*/
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int (*tpg_check_prot_fabric_only)(struct se_portal_group *);
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[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
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struct se_node_acl *(*tpg_alloc_fabric_acl)(
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struct se_portal_group *);
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void (*tpg_release_fabric_acl)(struct se_portal_group *,
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struct se_node_acl *);
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u32 (*tpg_get_inst_index)(struct se_portal_group *);
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/*
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* Optional to release struct se_cmd and fabric dependent allocated
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2011-11-02 18:33:16 +08:00
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* I/O descriptor in transport_cmd_check_stop().
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*
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* Returning 1 will signal a descriptor has been released.
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* Returning 0 will signal a descriptor has not been released.
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[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
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*/
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2011-11-02 18:33:16 +08:00
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int (*check_stop_free)(struct se_cmd *);
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2011-06-01 11:56:57 +08:00
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void (*release_cmd)(struct se_cmd *);
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2012-05-19 04:57:19 +08:00
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void (*put_session)(struct se_session *);
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[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
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/*
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* Called with spin_lock_bh(struct se_portal_group->session_lock held.
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*/
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int (*shutdown_session)(struct se_session *);
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void (*close_session)(struct se_session *);
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u32 (*sess_get_index)(struct se_session *);
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/*
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* Used only for SCSI fabrics that contain multi-value TransportIDs
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* (like iSCSI). All other SCSI fabrics should set this to NULL.
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*/
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u32 (*sess_get_initiator_sid)(struct se_session *,
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unsigned char *, u32);
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int (*write_pending)(struct se_cmd *);
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int (*write_pending_status)(struct se_cmd *);
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void (*set_default_node_attributes)(struct se_node_acl *);
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u32 (*get_task_tag)(struct se_cmd *);
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int (*get_cmd_state)(struct se_cmd *);
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int (*queue_data_in)(struct se_cmd *);
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int (*queue_status)(struct se_cmd *);
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2013-07-03 23:22:17 +08:00
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void (*queue_tm_rsp)(struct se_cmd *);
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2014-03-23 05:55:56 +08:00
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void (*aborted_task)(struct se_cmd *);
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[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
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/*
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* fabric module calls for target_core_fabric_configfs.c
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*/
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struct se_wwn *(*fabric_make_wwn)(struct target_fabric_configfs *,
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struct config_group *, const char *);
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void (*fabric_drop_wwn)(struct se_wwn *);
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struct se_portal_group *(*fabric_make_tpg)(struct se_wwn *,
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struct config_group *, const char *);
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void (*fabric_drop_tpg)(struct se_portal_group *);
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int (*fabric_post_link)(struct se_portal_group *,
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struct se_lun *);
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void (*fabric_pre_unlink)(struct se_portal_group *,
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struct se_lun *);
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struct se_tpg_np *(*fabric_make_np)(struct se_portal_group *,
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struct config_group *, const char *);
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void (*fabric_drop_np)(struct se_tpg_np *);
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struct se_node_acl *(*fabric_make_nodeacl)(struct se_portal_group *,
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struct config_group *, const char *);
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void (*fabric_drop_nodeacl)(struct se_node_acl *);
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2015-04-09 02:01:35 +08:00
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struct configfs_attribute **tfc_discovery_attrs;
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struct configfs_attribute **tfc_wwn_attrs;
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struct configfs_attribute **tfc_tpg_base_attrs;
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struct configfs_attribute **tfc_tpg_np_base_attrs;
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struct configfs_attribute **tfc_tpg_attrib_attrs;
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struct configfs_attribute **tfc_tpg_auth_attrs;
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struct configfs_attribute **tfc_tpg_param_attrs;
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struct configfs_attribute **tfc_tpg_nacl_base_attrs;
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struct configfs_attribute **tfc_tpg_nacl_attrib_attrs;
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struct configfs_attribute **tfc_tpg_nacl_auth_attrs;
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struct configfs_attribute **tfc_tpg_nacl_param_attrs;
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[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
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};
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2011-11-16 22:46:48 +08:00
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2015-04-09 02:01:35 +08:00
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int target_register_template(const struct target_core_fabric_ops *fo);
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void target_unregister_template(const struct target_core_fabric_ops *fo);
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2014-04-03 03:52:38 +08:00
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struct se_session *transport_init_session(enum target_prot_op);
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2013-06-08 08:38:58 +08:00
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int transport_alloc_session_tags(struct se_session *, unsigned int,
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unsigned int);
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2014-04-03 03:52:38 +08:00
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struct se_session *transport_init_session_tags(unsigned int, unsigned int,
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enum target_prot_op);
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2011-11-16 22:46:48 +08:00
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void __transport_register_session(struct se_portal_group *,
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struct se_node_acl *, struct se_session *, void *);
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void transport_register_session(struct se_portal_group *,
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struct se_node_acl *, struct se_session *, void *);
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2012-02-27 14:22:10 +08:00
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void target_get_session(struct se_session *);
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2012-05-11 22:35:08 +08:00
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void target_put_session(struct se_session *);
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2015-03-07 12:34:32 +08:00
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ssize_t target_show_dynamic_sessions(struct se_portal_group *, char *);
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2011-11-16 22:46:48 +08:00
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void transport_free_session(struct se_session *);
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2012-03-09 15:45:02 +08:00
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void target_put_nacl(struct se_node_acl *);
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2011-11-16 22:46:48 +08:00
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void transport_deregister_session_configfs(struct se_session *);
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void transport_deregister_session(struct se_session *);
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2015-04-09 02:01:35 +08:00
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void transport_init_se_cmd(struct se_cmd *,
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const struct target_core_fabric_ops *,
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2011-11-16 22:46:48 +08:00
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struct se_session *, u32, int, int, unsigned char *);
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2012-11-07 04:24:09 +08:00
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sense_reason_t transport_lookup_cmd_lun(struct se_cmd *, u32);
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sense_reason_t target_setup_cmd_from_cdb(struct se_cmd *, unsigned char *);
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2012-10-02 08:23:22 +08:00
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int target_submit_cmd_map_sgls(struct se_cmd *, struct se_session *,
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unsigned char *, unsigned char *, u32, u32, int, int, int,
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2013-12-24 04:38:30 +08:00
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struct scatterlist *, u32, struct scatterlist *, u32,
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struct scatterlist *, u32);
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2012-07-17 02:04:39 +08:00
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int target_submit_cmd(struct se_cmd *, struct se_session *, unsigned char *,
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2011-11-19 12:36:22 +08:00
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unsigned char *, u32, u32, int, int, int);
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2012-02-25 17:40:24 +08:00
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int target_submit_tmr(struct se_cmd *se_cmd, struct se_session *se_sess,
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2012-01-20 05:39:21 +08:00
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unsigned char *sense, u32 unpacked_lun,
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2012-02-25 21:10:04 +08:00
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void *fabric_tmr_ptr, unsigned char tm_type,
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gfp_t, unsigned int, int);
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2011-11-16 22:46:48 +08:00
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int transport_handle_cdb_direct(struct se_cmd *);
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2012-11-07 04:24:09 +08:00
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sense_reason_t transport_generic_new_cmd(struct se_cmd *);
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2011-11-16 22:46:48 +08:00
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2012-07-09 03:58:39 +08:00
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void target_execute_cmd(struct se_cmd *cmd);
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2011-11-16 22:46:48 +08:00
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2013-05-31 15:46:11 +08:00
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int transport_generic_free_cmd(struct se_cmd *, int);
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2011-11-16 22:46:48 +08:00
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bool transport_wait_for_tasks(struct se_cmd *);
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int transport_check_aborted_status(struct se_cmd *, int);
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2012-11-07 04:24:09 +08:00
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int transport_send_check_condition_and_sense(struct se_cmd *,
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sense_reason_t, int);
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2013-03-22 13:54:28 +08:00
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int target_get_sess_cmd(struct se_session *, struct se_cmd *, bool);
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2011-11-16 22:46:48 +08:00
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int target_put_sess_cmd(struct se_session *, struct se_cmd *);
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2012-07-17 02:04:42 +08:00
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void target_sess_cmd_list_set_waiting(struct se_session *);
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2013-05-15 15:44:07 +08:00
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void target_wait_for_sess_cmds(struct se_session *);
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2011-11-16 22:46:48 +08:00
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int core_alua_check_nonop_delay(struct se_cmd *);
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2012-01-20 05:39:17 +08:00
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int core_tmr_alloc_req(struct se_cmd *, void *, u8, gfp_t);
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2011-11-16 22:46:48 +08:00
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void core_tmr_release_req(struct se_tmr_req *);
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int transport_generic_handle_tmr(struct se_cmd *);
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2012-11-07 04:24:09 +08:00
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void transport_generic_request_failure(struct se_cmd *, sense_reason_t);
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2013-08-22 07:04:10 +08:00
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void __target_execute_cmd(struct se_cmd *);
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2011-11-16 22:46:48 +08:00
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int transport_lookup_tmr_lun(struct se_cmd *, u32);
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2013-10-08 05:13:02 +08:00
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struct se_node_acl *core_tpg_get_initiator_node_acl(struct se_portal_group *tpg,
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unsigned char *);
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2011-11-16 22:46:48 +08:00
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struct se_node_acl *core_tpg_check_initiator_node_acl(struct se_portal_group *,
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unsigned char *);
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void core_tpg_clear_object_luns(struct se_portal_group *);
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struct se_node_acl *core_tpg_add_initiator_node_acl(struct se_portal_group *,
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struct se_node_acl *, const char *, u32);
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int core_tpg_del_initiator_node_acl(struct se_portal_group *,
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struct se_node_acl *, int);
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int core_tpg_set_initiator_node_queue_depth(struct se_portal_group *,
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|
unsigned char *, u32, int);
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2012-12-12 08:30:53 +08:00
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|
int core_tpg_set_initiator_node_tag(struct se_portal_group *,
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struct se_node_acl *, const char *);
|
2015-04-09 02:01:35 +08:00
|
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|
int core_tpg_register(const struct target_core_fabric_ops *,
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|
|
struct se_wwn *, struct se_portal_group *, void *, int);
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2011-11-16 22:46:48 +08:00
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int core_tpg_deregister(struct se_portal_group *);
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/* SAS helpers */
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u8 sas_get_fabric_proto_ident(struct se_portal_group *);
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u32 sas_get_pr_transport_id(struct se_portal_group *, struct se_node_acl *,
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struct t10_pr_registration *, int *, unsigned char *);
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u32 sas_get_pr_transport_id_len(struct se_portal_group *, struct se_node_acl *,
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struct t10_pr_registration *, int *);
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char *sas_parse_pr_out_transport_id(struct se_portal_group *, const char *,
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|
u32 *, char **);
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/* FC helpers */
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u8 fc_get_fabric_proto_ident(struct se_portal_group *);
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u32 fc_get_pr_transport_id(struct se_portal_group *, struct se_node_acl *,
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|
struct t10_pr_registration *, int *, unsigned char *);
|
|
|
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u32 fc_get_pr_transport_id_len(struct se_portal_group *, struct se_node_acl *,
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|
|
struct t10_pr_registration *, int *);
|
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|
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char *fc_parse_pr_out_transport_id(struct se_portal_group *, const char *,
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|
|
u32 *, char **);
|
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|
/* iSCSI helpers */
|
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|
u8 iscsi_get_fabric_proto_ident(struct se_portal_group *);
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|
|
u32 iscsi_get_pr_transport_id(struct se_portal_group *, struct se_node_acl *,
|
|
|
|
struct t10_pr_registration *, int *, unsigned char *);
|
|
|
|
u32 iscsi_get_pr_transport_id_len(struct se_portal_group *, struct se_node_acl *,
|
|
|
|
struct t10_pr_registration *, int *);
|
|
|
|
char *iscsi_parse_pr_out_transport_id(struct se_portal_group *, const char *,
|
|
|
|
u32 *, char **);
|
|
|
|
|
2013-08-22 05:54:54 +08:00
|
|
|
/*
|
|
|
|
* The LIO target core uses DMA_TO_DEVICE to mean that data is going
|
|
|
|
* to the target (eg handling a WRITE) and DMA_FROM_DEVICE to mean
|
|
|
|
* that data is coming from the target (eg handling a READ). However,
|
|
|
|
* this is just the opposite of what we have to tell the DMA mapping
|
|
|
|
* layer -- eg when handling a READ, the HBA will have to DMA the data
|
|
|
|
* out of memory so it can send it to the initiator, which means we
|
|
|
|
* need to use DMA_TO_DEVICE when we map the data.
|
|
|
|
*/
|
|
|
|
static inline enum dma_data_direction
|
|
|
|
target_reverse_dma_direction(struct se_cmd *se_cmd)
|
|
|
|
{
|
|
|
|
if (se_cmd->se_cmd_flags & SCF_BIDI)
|
|
|
|
return DMA_BIDIRECTIONAL;
|
|
|
|
|
|
|
|
switch (se_cmd->data_direction) {
|
|
|
|
case DMA_TO_DEVICE:
|
|
|
|
return DMA_FROM_DEVICE;
|
|
|
|
case DMA_FROM_DEVICE:
|
|
|
|
return DMA_TO_DEVICE;
|
|
|
|
case DMA_NONE:
|
|
|
|
default:
|
|
|
|
return DMA_NONE;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2011-11-16 22:46:48 +08:00
|
|
|
#endif /* TARGET_CORE_FABRICH */
|