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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>
68 lines
2.1 KiB
C
68 lines
2.1 KiB
C
#ifndef TARGET_CORE_PR_H
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#define TARGET_CORE_PR_H
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/*
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* PERSISTENT_RESERVE_OUT service action codes
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*
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* spc4r17 section 6.14.2 Table 171
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*/
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#define PRO_REGISTER 0x00
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#define PRO_RESERVE 0x01
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#define PRO_RELEASE 0x02
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#define PRO_CLEAR 0x03
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#define PRO_PREEMPT 0x04
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#define PRO_PREEMPT_AND_ABORT 0x05
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#define PRO_REGISTER_AND_IGNORE_EXISTING_KEY 0x06
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#define PRO_REGISTER_AND_MOVE 0x07
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/*
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* PERSISTENT_RESERVE_IN service action codes
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*
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* spc4r17 section 6.13.1 Table 159
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*/
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#define PRI_READ_KEYS 0x00
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#define PRI_READ_RESERVATION 0x01
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#define PRI_REPORT_CAPABILITIES 0x02
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#define PRI_READ_FULL_STATUS 0x03
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/*
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* PERSISTENT_RESERVE_ SCOPE field
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*
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* spc4r17 section 6.13.3.3 Table 163
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*/
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#define PR_SCOPE_LU_SCOPE 0x00
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/*
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* PERSISTENT_RESERVE_* TYPE field
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*
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* spc4r17 section 6.13.3.4 Table 164
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*/
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#define PR_TYPE_WRITE_EXCLUSIVE 0x01
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#define PR_TYPE_EXCLUSIVE_ACCESS 0x03
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#define PR_TYPE_WRITE_EXCLUSIVE_REGONLY 0x05
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#define PR_TYPE_EXCLUSIVE_ACCESS_REGONLY 0x06
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#define PR_TYPE_WRITE_EXCLUSIVE_ALLREG 0x07
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#define PR_TYPE_EXCLUSIVE_ACCESS_ALLREG 0x08
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#define PR_APTPL_MAX_IPORT_LEN 256
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#define PR_APTPL_MAX_TPORT_LEN 256
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extern struct kmem_cache *t10_pr_reg_cache;
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extern int core_pr_dump_initiator_port(struct t10_pr_registration *,
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char *, u32);
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extern int core_scsi2_emulate_crh(struct se_cmd *);
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extern int core_scsi3_alloc_aptpl_registration(
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struct t10_reservation_template *, u64,
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unsigned char *, unsigned char *, u32,
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unsigned char *, u16, u32, int, int, u8);
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extern int core_scsi3_check_aptpl_registration(struct se_device *,
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struct se_portal_group *, struct se_lun *,
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struct se_lun_acl *);
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extern void core_scsi3_free_pr_reg_from_nacl(struct se_device *,
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struct se_node_acl *);
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extern void core_scsi3_free_all_registrations(struct se_device *);
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extern unsigned char *core_scsi3_pr_dump_type(int);
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extern int core_scsi3_check_cdb_abort_and_preempt(struct list_head *,
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struct se_cmd *);
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extern int core_scsi3_emulate_pr(struct se_cmd *);
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extern int core_setup_reservations(struct se_device *, int);
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#endif /* TARGET_CORE_PR_H */
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