[SCSI] FC transport : Avoid device offline cases by stalling aborts until device unblocked
This moves the eh_timed_out functionality from the scsi_host_template
to the transport_template. Given that this is now a transport function,
the EH_RESET_TIMER case no longer caps the timer reschedulings. The
transport guarantees that this is not an infinite condition.
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
diff --git a/include/scsi/scsi_transport.h b/include/scsi/scsi_transport.h
index e7b1054..b3657f1 100644
--- a/include/scsi/scsi_transport.h
+++ b/include/scsi/scsi_transport.h
@@ -48,6 +48,17 @@
* True if the transport wants to use a host-based work-queue
*/
unsigned int create_work_queue : 1;
+
+ /*
+ * This is an optional routine that allows the transport to become
+ * involved when a scsi io timer fires. The return value tells the
+ * timer routine how to finish the io timeout handling:
+ * EH_HANDLED: I fixed the error, please complete the command
+ * EH_RESET_TIMER: I need more time, reset the timer and
+ * begin counting again
+ * EH_NOT_HANDLED Begin normal error recovery
+ */
+ enum scsi_eh_timer_return (* eh_timed_out)(struct scsi_cmnd *);
};
#define transport_class_to_shost(tc) \