target: Add TCM_MISCOMPARE_VERIFY sense handling

This patch adds TCM_MISCOMPARE_VERIFY (ASC=0x1d, ASCQ=0x00) sense
handling to transport_send_check_condition_and_sense(), which is
required for a COMPARE_AND_WRITE comparision failure.

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: James Bottomley <JBottomley@Parallels.com>
Cc: Nicholas Bellinger <nab@linux-iscsi.org>
Signed-off-by: Nicholas Bellinger <nab@daterainc.com>

2 files changed, 10 insertions, 0 deletions

diff --git a/drivers/target/target_core_transport.c b/drivers/target/target_core_transport.c
index 53d1d756f7f5..3d3dc97b34d9 100644
--- a/drivers/target/target_core_transport.c
+++ b/drivers/target/target_core_transport.c
@@ -2791,6 +2791,15 @@ transport_send_check_condition_and_sense(struct se_cmd *cmd,
                 buffer[SPC_ASC_KEY_OFFSET] = asc;
                 buffer[SPC_ASCQ_KEY_OFFSET] = ascq;
                 break;
+        case TCM_MISCOMPARE_VERIFY:
+                /* CURRENT ERROR */
+                buffer[0] = 0x70;
+                buffer[SPC_ADD_SENSE_LEN_OFFSET] = 10;
+                buffer[SPC_SENSE_KEY_OFFSET] = MISCOMPARE;
+                /* MISCOMPARE DURING VERIFY OPERATION */
+                buffer[SPC_ASC_KEY_OFFSET] = 0x1d;
+                buffer[SPC_ASCQ_KEY_OFFSET] = 0x00;
+                break;
         case TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE:
         default:
                 /* CURRENT ERROR */
diff --git a/include/target/target_core_base.h b/include/target/target_core_base.h
index 6892b3332ebb..3313b7d91ac8 100644
--- a/include/target/target_core_base.h
+++ b/include/target/target_core_base.h
@@ -197,6 +197,7 @@ enum tcm_sense_reason_table {
         TCM_ADDRESS_OUT_OF_RANGE                = R(0x11),
         TCM_OUT_OF_RESOURCES                    = R(0x12),
         TCM_PARAMETER_LIST_LENGTH_ERROR         = R(0x13),
+        TCM_MISCOMPARE_VERIFY                   = R(0x14),
 #undef R
 };