target: Add Third Party Copy (3PC) bit in INQUIRY response

This patch adds the Third Party Copy (3PC) bit to signal support
for EXTENDED_COPY within standard inquiry response data.

Also add emulate_3pc device attribute in configfs (enabled by default)
to allow the exposure of this bit to be disabled, if necessary.

Cc: Christoph Hellwig <hch@lst.de>
Cc: Hannes Reinecke <hare@suse.de>
Cc: Martin Petersen <martin.petersen@oracle.com>
Cc: Chris Mason <chris.mason@fusionio.com>
Cc: Roland Dreier <roland@purestorage.com>
Cc: Zach Brown <zab@redhat.com>
Cc: James Bottomley <JBottomley@Parallels.com>
Cc: Nicholas Bellinger <nab@linux-iscsi.org>
Signed-off-by: Nicholas Bellinger <nab@daterainc.com>

1 files changed, 3 insertions, 0 deletions

diff --git a/include/target/target_core_base.h b/include/target/target_core_base.h
index 68a4ca698025..e12bcd7f76ca 100644
--- a/include/target/target_core_base.h
+++ b/include/target/target_core_base.h
@@ -99,6 +99,8 @@
 #define DA_EMULATE_TPWS                         0
 /* Emulation for CompareAndWrite (AtomicTestandSet) by default */
 #define DA_EMULATE_CAW                          1
+/* Emulation for 3rd Party Copy (ExtendedCopy) by default */
+#define DA_EMULATE_3PC                          1
 /* No Emulation for PSCSI by default */
 #define DA_EMULATE_ALUA                         0
 /* Enforce SCSI Initiator Port TransportID with 'ISID' for PR */
@@ -606,6 +608,7 @@ struct se_dev_attrib {
         int             emulate_tpu;
         int             emulate_tpws;
         int             emulate_caw;
+        int             emulate_3pc;
         int             enforce_pr_isids;
         int             is_nonrot;
         int             emulate_rest_reord;