[SCSI] libfc: add method for setting handler for incoming exchange

Add a method for setting handler for incoming exchange.
For multi-sequence exchanges, this allows the target driver
to add a response handler for handling subsequent sequences,
and exchange manager resets.

The new function is called fc_seq_set_resp().

Signed-off-by: Joe Eykholt <jeykholt@cisco.com>
Signed-off-by: Robert Love <robert.w.love@intel.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>

1 files changed, 10 insertions, 0 deletions

diff --git a/include/scsi/libfc.h b/include/scsi/libfc.h
index 3ae2a760b4f3..3b8f5d83611b 100644
--- a/include/scsi/libfc.h
+++ b/include/scsi/libfc.h
@@ -555,6 +555,16 @@ struct libfc_function_template {
         struct fc_seq *(*seq_start_next)(struct fc_seq *);
 
         /*
+         * Set a response handler for the exchange of the sequence.
+         *
+         * STATUS: OPTIONAL
+         */
+        void (*seq_set_resp)(struct fc_seq *sp,
+                             void (*resp)(struct fc_seq *, struct fc_frame *,
+                                          void *),
+                             void *arg);
+
+        /*
          * Assign a sequence for an incoming request frame.
          *
          * STATUS: OPTIONAL