tcmur: Add emulate XCOPY command support

The EXTENDED COPY command provides a means to copy data from one set of logical units to another set of logical units or to the same set of logical units. The entity within a SCSI device that manages the command processing for EXTENDED COPY commands and RECEIVE COPY RESULTS commands is the copy manager. The copy manager is responsible for copying data from the source devices to the destination devices. The copy source and destination devices are logical units that may reside in different SCSI devices or the same SCSI device. It is possible that the copy source device, copy destination device, and the copy manager are the same logical unit. Currently we are using sync way to do the emulate to simplify the initial patches, and the async way will be added later as commented by @liuy. Signed-off-by: Xiubo Li <lixiubo@cmss.chinamobile.com>
ddiss · May 20, 2017 · 9c86bd0 · 9c86bd0
1 parent 615a4e2
commit 9c86bd0
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Showing 2 changed files with 683 additions and 2 deletions.
diff --git a/scsi_defs.h b/scsi_defs.h
@@ -18,6 +18,7 @@
 #define READ_DISC_INFORMATION           0x51
 #define MODE_SELECT_10                  0x55
 #define MODE_SENSE_10                   0x5a
+#define EXTENDED_COPY                   0x83
 #define RECEIVE_COPY_RESULTS            0x84 /* RECEIVE COPY STATUS */
 #define READ_16                         0x88
 #define COMPARE_AND_WRITE               0x89
@@ -100,18 +101,23 @@ enum scsi_protocol {
  * Sense codes
  */
 #define ASC_NOT_READY_FORMAT_IN_PROGRESS        0x0404
-#define ASC_PORT_IN_STANDBY			0x040B
+#define ASC_PORT_IN_STANDBY                     0x040B
+#define ASC_COPY_TARGET_DEVICE_NOT_REACHABLE    0x0D02
+#define ASC_INCORRECT_COPY_TARGET_DEVICE_TYPE   0x0D03
 #define ASC_READ_ERROR                          0x1100
+#define ASC_LOGICAL_UNIT_COMMUNICATION_FAILURE  0x0800
 #define ASC_WRITE_ERROR                         0x0C00
 #define ASC_PARAMETER_LIST_LENGTH_ERROR         0x1a00
 #define ASC_MISCOMPARE_DURING_VERIFY_OPERATION  0x1d00
 #define ASC_LBA_OUT_OF_RANGE                    0x2100
 #define ASC_INVALID_FIELD_IN_CDB                0x2400
 #define ASC_INVALID_FIELD_IN_PARAMETER_LIST     0x2600
+#define ASC_UNSUPPORTED_SEGMENT_DESC_TYPE_CODE  0x2609
+#define ASC_UNSUPPORTED_TARGET_DESC_TYPE_CODE   0x2607
 #define ASC_CANT_WRITE_INCOMPATIBLE_FORMAT      0x3005
 #define ASC_SAVING_PARAMETERS_NOT_SUPPORTED     0x3900
 #define ASC_INTERNAL_TARGET_FAILURE             0x4400
-#define ASC_STPG_CMD_FAILED			0x670A
+#define ASC_STPG_CMD_FAILED                     0x670A
 
 
 #define ALUA_ACCESS_STATE_OPTIMIZED		0x0