mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-08-23 17:30:02 +00:00
![Nicholas Bellinger](/assets/img/avatar_default.png)
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>
67 lines
2.1 KiB
C
67 lines
2.1 KiB
C
#ifndef TARGET_CORE_PR_H
|
|
#define TARGET_CORE_PR_H
|
|
/*
|
|
* PERSISTENT_RESERVE_OUT service action codes
|
|
*
|
|
* spc4r17 section 6.14.2 Table 171
|
|
*/
|
|
#define PRO_REGISTER 0x00
|
|
#define PRO_RESERVE 0x01
|
|
#define PRO_RELEASE 0x02
|
|
#define PRO_CLEAR 0x03
|
|
#define PRO_PREEMPT 0x04
|
|
#define PRO_PREEMPT_AND_ABORT 0x05
|
|
#define PRO_REGISTER_AND_IGNORE_EXISTING_KEY 0x06
|
|
#define PRO_REGISTER_AND_MOVE 0x07
|
|
/*
|
|
* PERSISTENT_RESERVE_IN service action codes
|
|
*
|
|
* spc4r17 section 6.13.1 Table 159
|
|
*/
|
|
#define PRI_READ_KEYS 0x00
|
|
#define PRI_READ_RESERVATION 0x01
|
|
#define PRI_REPORT_CAPABILITIES 0x02
|
|
#define PRI_READ_FULL_STATUS 0x03
|
|
/*
|
|
* PERSISTENT_RESERVE_ SCOPE field
|
|
*
|
|
* spc4r17 section 6.13.3.3 Table 163
|
|
*/
|
|
#define PR_SCOPE_LU_SCOPE 0x00
|
|
/*
|
|
* PERSISTENT_RESERVE_* TYPE field
|
|
*
|
|
* spc4r17 section 6.13.3.4 Table 164
|
|
*/
|
|
#define PR_TYPE_WRITE_EXCLUSIVE 0x01
|
|
#define PR_TYPE_EXCLUSIVE_ACCESS 0x03
|
|
#define PR_TYPE_WRITE_EXCLUSIVE_REGONLY 0x05
|
|
#define PR_TYPE_EXCLUSIVE_ACCESS_REGONLY 0x06
|
|
#define PR_TYPE_WRITE_EXCLUSIVE_ALLREG 0x07
|
|
#define PR_TYPE_EXCLUSIVE_ACCESS_ALLREG 0x08
|
|
|
|
#define PR_APTPL_MAX_IPORT_LEN 256
|
|
#define PR_APTPL_MAX_TPORT_LEN 256
|
|
|
|
extern struct kmem_cache *t10_pr_reg_cache;
|
|
|
|
extern int core_pr_dump_initiator_port(struct t10_pr_registration *,
|
|
char *, u32);
|
|
extern int core_scsi2_emulate_crh(struct se_cmd *);
|
|
extern int core_scsi3_alloc_aptpl_registration(
|
|
struct t10_reservation_template *, u64,
|
|
unsigned char *, unsigned char *, u32,
|
|
unsigned char *, u16, u32, int, int, u8);
|
|
extern int core_scsi3_check_aptpl_registration(struct se_device *,
|
|
struct se_portal_group *, struct se_lun *,
|
|
struct se_lun_acl *);
|
|
extern void core_scsi3_free_pr_reg_from_nacl(struct se_device *,
|
|
struct se_node_acl *);
|
|
extern void core_scsi3_free_all_registrations(struct se_device *);
|
|
extern unsigned char *core_scsi3_pr_dump_type(int);
|
|
extern int core_scsi3_check_cdb_abort_and_preempt(struct list_head *,
|
|
struct se_cmd *);
|
|
extern int core_scsi3_emulate_pr(struct se_cmd *);
|
|
extern int core_setup_reservations(struct se_device *, int);
|
|
|
|
#endif /* TARGET_CORE_PR_H */
|