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authorJames Smart <James.Smart@Emulex.Com>2006-03-13 08:28:57 -0500
committerJames Bottomley <jejb@mulgrave.il.steeleye.com>2006-03-13 08:58:58 -0600
commitc829c394165f981d49f05a9be228404d7a9398d4 (patch)
tree649ca326052a4a35d31f150f274347ca9d38c678 /include/scsi/scsi_transport.h
parentce313db240862d809c736c5b1dfc759817fc7ca9 (diff)
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[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>
Diffstat (limited to 'include/scsi/scsi_transport.h')
-rw-r--r--include/scsi/scsi_transport.h11
1 files changed, 11 insertions, 0 deletions
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 @@ struct scsi_transport_template {
* 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) \
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