[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_file.h b/drivers/target/target_core_file.h
new file mode 100644
index 0000000..ef4de2b
--- /dev/null
+++ b/drivers/target/target_core_file.h
@@ -0,0 +1,50 @@
+#ifndef TARGET_CORE_FILE_H
+#define TARGET_CORE_FILE_H
+
+#define FD_VERSION "4.0"
+
+#define FD_MAX_DEV_NAME 256
+/* Maximum queuedepth for the FILEIO HBA */
+#define FD_HBA_QUEUE_DEPTH 256
+#define FD_DEVICE_QUEUE_DEPTH 32
+#define FD_MAX_DEVICE_QUEUE_DEPTH 128
+#define FD_BLOCKSIZE 512
+#define FD_MAX_SECTORS 1024
+
+#define RRF_EMULATE_CDB 0x01
+#define RRF_GOT_LBA 0x02
+
+struct fd_request {
+ struct se_task fd_task;
+ /* SCSI CDB from iSCSI Command PDU */
+ unsigned char fd_scsi_cdb[TCM_MAX_COMMAND_SIZE];
+ /* FILEIO device */
+ struct fd_dev *fd_dev;
+} ____cacheline_aligned;
+
+#define FBDF_HAS_PATH 0x01
+#define FBDF_HAS_SIZE 0x02
+#define FDBD_USE_BUFFERED_IO 0x04
+
+struct fd_dev {
+ u32 fbd_flags;
+ unsigned char fd_dev_name[FD_MAX_DEV_NAME];
+ /* Unique Ramdisk Device ID in Ramdisk HBA */
+ u32 fd_dev_id;
+ /* Number of SG tables in sg_table_array */
+ u32 fd_table_count;
+ u32 fd_queue_depth;
+ u32 fd_block_size;
+ unsigned long long fd_dev_size;
+ struct file *fd_file;
+ /* FILEIO HBA device is connected to */
+ struct fd_host *fd_host;
+} ____cacheline_aligned;
+
+struct fd_host {
+ u32 fd_host_dev_id_count;
+ /* Unique FILEIO Host ID */
+ u32 fd_host_id;
+} ____cacheline_aligned;
+
+#endif /* TARGET_CORE_FILE_H */