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-rw-r--r--drivers/scsi/libfc/fc_exch.c19
-rw-r--r--include/scsi/libfc.h10
2 files changed, 29 insertions, 0 deletions
diff --git a/drivers/scsi/libfc/fc_exch.c b/drivers/scsi/libfc/fc_exch.c
index e0b5b15c355b..1f124c0351b4 100644
--- a/drivers/scsi/libfc/fc_exch.c
+++ b/drivers/scsi/libfc/fc_exch.c
@@ -558,6 +558,22 @@ static struct fc_seq *fc_seq_start_next(struct fc_seq *sp)
return sp;
}
+/*
+ * Set the response handler for the exchange associated with a sequence.
+ */
+static void fc_seq_set_resp(struct fc_seq *sp,
+ void (*resp)(struct fc_seq *, struct fc_frame *,
+ void *),
+ void *arg)
+{
+ struct fc_exch *ep = fc_seq_exch(sp);
+
+ spin_lock_bh(&ep->ex_lock);
+ ep->resp = resp;
+ ep->arg = arg;
+ spin_unlock_bh(&ep->ex_lock);
+}
+
/**
* fc_seq_exch_abort() - Abort an exchange and sequence
* @req_sp: The sequence to be aborted
@@ -2329,6 +2345,9 @@ int fc_exch_init(struct fc_lport *lport)
if (!lport->tt.seq_start_next)
lport->tt.seq_start_next = fc_seq_start_next;
+ if (!lport->tt.seq_set_resp)
+ lport->tt.seq_set_resp = fc_seq_set_resp;
+
if (!lport->tt.exch_seq_send)
lport->tt.exch_seq_send = fc_exch_seq_send;
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