target: add SAM_STAT_BUSY sense reason

Add SAM_STAT_BUSY sense_reason. The next patch will have
target_core_user return this value while it is temporarily
blocked and restarting.

Signed-off-by: Mike Christie <mchristi@redhat.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>

2 files changed, 4 insertions, 0 deletions

diff --git a/drivers/target/target_core_transport.c b/drivers/target/target_core_transport.c
index 58caacd54a3b..74b646f165d4 100644
--- a/drivers/target/target_core_transport.c
+++ b/drivers/target/target_core_transport.c
@@ -1774,6 +1774,9 @@ void transport_generic_request_failure(struct se_cmd *cmd,
         case TCM_OUT_OF_RESOURCES:
                 cmd->scsi_status = SAM_STAT_TASK_SET_FULL;
                 goto queue_status;
+        case TCM_LUN_BUSY:
+                cmd->scsi_status = SAM_STAT_BUSY;
+                goto queue_status;
         case TCM_RESERVATION_CONFLICT:
                 /*
                  * No SENSE Data payload for this case, set SCSI Status
diff --git a/include/target/target_core_base.h b/include/target/target_core_base.h
index 2c8d8115469d..00482f903dec 100644
--- a/include/target/target_core_base.h
+++ b/include/target/target_core_base.h
@@ -183,6 +183,7 @@ enum tcm_sense_reason_table {
         TCM_TOO_MANY_SEGMENT_DESCS              = R(0x1b),
         TCM_UNSUPPORTED_SEGMENT_DESC_TYPE_CODE  = R(0x1c),
         TCM_INSUFFICIENT_REGISTRATION_RESOURCES = R(0x1d),
+        TCM_LUN_BUSY                            = R(0x1e),
 #undef R
 };