From: Mike Christie <michaelc@xxxxxxxxxxx>
This patch adds a bsg queueing and timeout function
callout to the scsi host transport template. In the
next patches the transport classes will use this along
with the scsi_bsg lib.
Signed-off-by: Mike Christie <michaelc@xxxxxxxxxxx>
---
include/scsi/scsi_transport.h | 23 +++++++++++++++++++++++
1 files changed, 23 insertions(+), 0 deletions(-)
diff --git a/include/scsi/scsi_transport.h b/include/scsi/scsi_transport.h
index 0de32cd..2167b8c 100644
--- a/include/scsi/scsi_transport.h
+++ b/include/scsi/scsi_transport.h
@@ -25,6 +25,8 @@
#include <scsi/scsi_host.h>
#include <scsi/scsi_device.h>
+struct scsi_bsg_job;
+
struct scsi_transport_template {
/* the attribute containers */
struct transport_container host_attrs;
@@ -68,6 +70,27 @@ struct scsi_transport_template {
enum blk_eh_timer_return (*eh_timed_out)(struct scsi_cmnd *);
/*
+ * This is an optional routine that allows the transport to become
+ * involved when a bsg req timer fires. 0 should be returned on
+ * success and a -Exyz code should be returned on a error.
+ * If -EAGAIN is returned we give the request more time.
+ */
+ int (*eh_bsg_job_timed_out)(struct scsi_bsg_job *);
+
+ /*
+ * This is optional. LLDDs should set this to the amount of space
+ * it needs for a bsg_job that is queued to @queue_bsg_job.
+ */
+ int bsg_job_size;
+
+ /*
+ * This is a an optional routine that is used to queue a bsg job
+ * to the LLDD. The LLDD should return 0 for success and a -Exyz
+ * error code for a failure.
+ */
+ int (*queue_bsg_job)(struct scsi_bsg_job *);
+
+ /*
* Used as callback for the completion of i_t_nexus request
* for target drivers.
*/
--
1.7.2.3
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