Merge pull request #398 from anatoliy-glagolev/master

checking if task is in outqueue

include/iscsi.h

@@ -1537,6 +1537,13 @@ EXTERN void scsi_task_set_iov_in(struct scsi_task *task, struct scsi_iovec *iov,
 
 EXTERN int scsi_task_get_status(struct scsi_task *task, struct scsi_sense *sense);
 
+/*
+ * This function returns 1 if the task is queued for send (for example, the task has been created
+ * with an asynchronous request and has not been put on the wire right away due to the socket
+ * or the ISCSI session state); otherwise returns 0.
+ */
+EXTERN int iscsi_scsi_is_task_in_outqueue(struct iscsi_context *iscsi, struct scsi_task *task);
+
 /*
  * This function is used when you want to cancel a scsi task.
  * The callback for the task will immediately be invoked with SCSI_STATUS_CANCELLED.

lib/iscsi-command.c

@@ -2675,6 +2675,19 @@ iscsi_scsi_get_task_from_pdu(struct iscsi_pdu *pdu)
 	return pdu->scsi_cbdata.task;
 }
 
+int iscsi_scsi_is_task_in_outqueue(struct iscsi_context *iscsi, struct scsi_task *task)
+{
+	struct iscsi_pdu *pdu;
+
+	for (pdu = iscsi->outqueue; pdu; pdu = pdu->next) {
+		if (pdu->itt == task->itt) {
+			return 1;
+		}
+	}
+
+	return 0;
+}
+
 int
 iscsi_scsi_cancel_task(struct iscsi_context *iscsi,
 		       struct scsi_task *task)