[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/drivers/target/target_core_ua.h b/drivers/target/target_core_ua.h
new file mode 100644
index 0000000..6e6b034
--- /dev/null
+++ b/drivers/target/target_core_ua.h
@@ -0,0 +1,36 @@
+#ifndef TARGET_CORE_UA_H
+
+/*
+ * From spc4r17, Table D.1: ASC and ASCQ Assignement
+ */
+#define ASCQ_29H_POWER_ON_RESET_OR_BUS_DEVICE_RESET_OCCURED 0x00
+#define ASCQ_29H_POWER_ON_OCCURRED 0x01
+#define ASCQ_29H_SCSI_BUS_RESET_OCCURED 0x02
+#define ASCQ_29H_BUS_DEVICE_RESET_FUNCTION_OCCURRED 0x03
+#define ASCQ_29H_DEVICE_INTERNAL_RESET 0x04
+#define ASCQ_29H_TRANSCEIVER_MODE_CHANGED_TO_SINGLE_ENDED 0x05
+#define ASCQ_29H_TRANSCEIVER_MODE_CHANGED_TO_LVD 0x06
+#define ASCQ_29H_NEXUS_LOSS_OCCURRED 0x07
+
+#define ASCQ_2AH_PARAMETERS_CHANGED 0x00
+#define ASCQ_2AH_MODE_PARAMETERS_CHANGED 0x01
+#define ASCQ_2AH_LOG_PARAMETERS_CHANGED 0x02
+#define ASCQ_2AH_RESERVATIONS_PREEMPTED 0x03
+#define ASCQ_2AH_RESERVATIONS_RELEASED 0x04
+#define ASCQ_2AH_REGISTRATIONS_PREEMPTED 0x05
+#define ASCQ_2AH_ASYMMETRIC_ACCESS_STATE_CHANGED 0x06
+#define ASCQ_2AH_IMPLICT_ASYMMETRIC_ACCESS_STATE_TRANSITION_FAILED 0x07
+#define ASCQ_2AH_PRIORITY_CHANGED 0x08
+
+#define ASCQ_2CH_PREVIOUS_RESERVATION_CONFLICT_STATUS 0x09
+
+extern struct kmem_cache *se_ua_cache;
+
+extern int core_scsi3_ua_check(struct se_cmd *, unsigned char *);
+extern int core_scsi3_ua_allocate(struct se_node_acl *, u32, u8, u8);
+extern void core_scsi3_ua_release_all(struct se_dev_entry *);
+extern void core_scsi3_ua_for_check_condition(struct se_cmd *, u8 *, u8 *);
+extern int core_scsi3_ua_clear_for_request_sense(struct se_cmd *,
+ u8 *, u8 *);
+
+#endif /* TARGET_CORE_UA_H */
