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c66ac9db8d
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>
44 lines
1.2 KiB
C
44 lines
1.2 KiB
C
#ifndef TARGET_CORE_TMR_H
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#define TARGET_CORE_TMR_H
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/* task management function values */
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#ifdef ABORT_TASK
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#undef ABORT_TASK
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#endif /* ABORT_TASK */
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#define ABORT_TASK 1
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#ifdef ABORT_TASK_SET
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#undef ABORT_TASK_SET
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#endif /* ABORT_TASK_SET */
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#define ABORT_TASK_SET 2
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#ifdef CLEAR_ACA
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#undef CLEAR_ACA
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#endif /* CLEAR_ACA */
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#define CLEAR_ACA 3
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#ifdef CLEAR_TASK_SET
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#undef CLEAR_TASK_SET
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#endif /* CLEAR_TASK_SET */
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#define CLEAR_TASK_SET 4
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#define LUN_RESET 5
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#define TARGET_WARM_RESET 6
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#define TARGET_COLD_RESET 7
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#define TASK_REASSIGN 8
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/* task management response values */
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#define TMR_FUNCTION_COMPLETE 0
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#define TMR_TASK_DOES_NOT_EXIST 1
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#define TMR_LUN_DOES_NOT_EXIST 2
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#define TMR_TASK_STILL_ALLEGIANT 3
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#define TMR_TASK_FAILOVER_NOT_SUPPORTED 4
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#define TMR_TASK_MGMT_FUNCTION_NOT_SUPPORTED 5
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#define TMR_FUNCTION_AUTHORIZATION_FAILED 6
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#define TMR_FUNCTION_REJECTED 255
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extern struct kmem_cache *se_tmr_req_cache;
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extern struct se_tmr_req *core_tmr_alloc_req(struct se_cmd *, void *, u8);
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extern void core_tmr_release_req(struct se_tmr_req *);
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extern int core_tmr_lun_reset(struct se_device *, struct se_tmr_req *,
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struct list_head *, struct se_cmd *);
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#endif /* TARGET_CORE_TMR_H */
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