[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>
diff --git a/include/target/target_core_tmr.h b/include/target/target_core_tmr.h
new file mode 100644
index 0000000..6c8248b
--- /dev/null
+++ b/include/target/target_core_tmr.h
@@ -0,0 +1,43 @@
+#ifndef TARGET_CORE_TMR_H
+#define TARGET_CORE_TMR_H
+
+/* task management function values */
+#ifdef ABORT_TASK
+#undef ABORT_TASK
+#endif /* ABORT_TASK */
+#define ABORT_TASK 1
+#ifdef ABORT_TASK_SET
+#undef ABORT_TASK_SET
+#endif /* ABORT_TASK_SET */
+#define ABORT_TASK_SET 2
+#ifdef CLEAR_ACA
+#undef CLEAR_ACA
+#endif /* CLEAR_ACA */
+#define CLEAR_ACA 3
+#ifdef CLEAR_TASK_SET
+#undef CLEAR_TASK_SET
+#endif /* CLEAR_TASK_SET */
+#define CLEAR_TASK_SET 4
+#define LUN_RESET 5
+#define TARGET_WARM_RESET 6
+#define TARGET_COLD_RESET 7
+#define TASK_REASSIGN 8
+
+/* task management response values */
+#define TMR_FUNCTION_COMPLETE 0
+#define TMR_TASK_DOES_NOT_EXIST 1
+#define TMR_LUN_DOES_NOT_EXIST 2
+#define TMR_TASK_STILL_ALLEGIANT 3
+#define TMR_TASK_FAILOVER_NOT_SUPPORTED 4
+#define TMR_TASK_MGMT_FUNCTION_NOT_SUPPORTED 5
+#define TMR_FUNCTION_AUTHORIZATION_FAILED 6
+#define TMR_FUNCTION_REJECTED 255
+
+extern struct kmem_cache *se_tmr_req_cache;
+
+extern struct se_tmr_req *core_tmr_alloc_req(struct se_cmd *, void *, u8);
+extern void core_tmr_release_req(struct se_tmr_req *);
+extern int core_tmr_lun_reset(struct se_device *, struct se_tmr_req *,
+ struct list_head *, struct se_cmd *);
+
+#endif /* TARGET_CORE_TMR_H */