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>

diff --git a/drivers/target/target_core_transport.c b/drivers/target/target_core_transport.c
index 53d1d756f7f532afea85bd8842ca2d726c878abf..3d3dc97b34d92acd8e65123f21613ce47b21d8f7 100644 (file)
--- 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 6892b3332ebb6eee9556b45cedde5318845ed4ed..3313b7d91ac8aa0e3c2a3168c0b880b97b3fa6f1 100644 (file)
--- 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
 };