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-rw-r--r--include/scsi/libfc.h9
1 files changed, 9 insertions, 0 deletions
diff --git a/include/scsi/libfc.h b/include/scsi/libfc.h
index e1379b4e8fa..52beadf9a29 100644
--- a/include/scsi/libfc.h
+++ b/include/scsi/libfc.h
@@ -410,6 +410,12 @@ struct fc_seq {
* @fh_type: The frame type
* @class: The class of service
* @seq: The sequence in use on this exchange
+ * @resp_active: Number of tasks that are concurrently executing @resp().
+ * @resp_task: If @resp_active > 0, either the task executing @resp(), the
+ * task that has been interrupted to execute the soft-IRQ
+ * executing @resp() or NULL if more than one task is executing
+ * @resp concurrently.
+ * @resp_wq: Waitqueue for the tasks waiting on @resp_active.
* @resp: Callback for responses on this exchange
* @destructor: Called when destroying the exchange
* @arg: Passed as a void pointer to the resp() callback
@@ -441,6 +447,9 @@ struct fc_exch {
u32 r_a_tov;
u32 f_ctl;
struct fc_seq seq;
+ int resp_active;
+ struct task_struct *resp_task;
+ wait_queue_head_t resp_wq;
void (*resp)(struct fc_seq *, struct fc_frame *, void *);
void *arg;
void (*destructor)(struct fc_seq *, void *);