[SCSI] iscsi class, libiscsi and qla4xxx: convert to new transport host byte values

This patch converts the iscsi drivers to the new host byte values.

v2
Drop some conversions. Want to avoid conflicts with other patches.
v1
initial patch.

Signed-off-by: Mike Christie <[e-mail]>
Signed-off-by: James Bottomley <[e-mail]>

drivers/scsi/libiscsi.c

···
 			goto reject;
 		case ISCSI_STATE_RECOVERY_FAILED:
 			reason = FAILURE_SESSION_RECOVERY_TIMEOUT;
-			sc->result = DID_NO_CONNECT << 16;
+			sc->result = DID_TRANSPORT_FAILFAST << 16;
 			break;
 		case ISCSI_STATE_TERMINATE:
 			reason = FAILURE_SESSION_TERMINATE;
···
 	 * flush queues.
 	 */
 	spin_lock_bh(&session->lock);
-	fail_all_commands(conn, -1,
-			STOP_CONN_RECOVER ? DID_BUS_BUSY : DID_ERROR);
+	if (STOP_CONN_RECOVER)
+		fail_all_commands(conn, -1, DID_TRANSPORT_DISRUPTED);
+	else
+		fail_all_commands(conn, -1, DID_ERROR);
 	flush_control_queues(session, conn);
 	spin_unlock_bh(&session->lock);
 	mutex_unlock(&session->eh_mutex);

drivers/scsi/qla4xxx/ql4_isr.c

···
 			      ha->host_no, cmd->device->channel,
 			      cmd->device->id, cmd->device->lun));
 
-		cmd->result = DID_BUS_BUSY << 16;
+		cmd->result = DID_TRANSPORT_DISRUPTED << 16;
 
 		/*
 		 * Mark device missing so that we won't continue to send
···
 		if (atomic_read(&ddb_entry->state) == DDB_STATE_ONLINE)
 			qla4xxx_mark_device_missing(ha, ddb_entry);
 
-		cmd->result = DID_BUS_BUSY << 16;
+		cmd->result = DID_TRANSPORT_DISRUPTED << 16;
 		break;
 
 	case SCS_QUEUE_FULL:

drivers/scsi/scsi_transport_iscsi.c

···
 		err = 0;
 		break;
 	case ISCSI_SESSION_FAILED:
-		err = DID_IMM_RETRY << 16;
+		err = DID_TRANSPORT_DISRUPTED << 16;
 		break;
 	case ISCSI_SESSION_FREE:
-		err = DID_NO_CONNECT << 16;
+		err = DID_TRANSPORT_FAILFAST << 16;
 		break;
 	default:
 		err = DID_NO_CONNECT << 16;