[SCSI] libfc: don't require a local exchange for incoming requests

Incoming requests shouldn't require a local exchange if we're
just going to reply with one or two frames and don't expect
anything further.  Don't allocate exchanges for such requests
until requested by the upper-layer protocol.

The sequence is always NULL for new requests, so remove
that as an argument to request handlers.

Also change the first argument to lport->tt.seq_els_rsp_send
from the sequence pointer to the received frame pointer, to
supply the exchange IDs and destination ID info.

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, 4 insertions, 5 deletions

diff --git a/drivers/scsi/fcoe/libfcoe.c b/drivers/scsi/fcoe/libfcoe.c
index 4de8ced..2c265fe 100644
--- a/drivers/scsi/fcoe/libfcoe.c
+++ b/drivers/scsi/fcoe/libfcoe.c
@@ -2341,20 +2341,19 @@ drop:
 
 /**
  * fcoe_ctlr_disc_recv - discovery receive handler for VN2VN mode.
- * @fip: The FCoE controller
+ * @lport: The local port
+ * @fp: The received frame
  *
  * This should never be called since we don't see RSCNs or other
  * fabric-generated ELSes.
  */
-static void fcoe_ctlr_disc_recv(struct fc_seq *seq, struct fc_frame *fp,
-				struct fc_lport *lport)
+static void fcoe_ctlr_disc_recv(struct fc_lport *lport, struct fc_frame *fp)
 {
 	struct fc_seq_els_data rjt_data;
 
-	rjt_data.fp = NULL;
 	rjt_data.reason = ELS_RJT_UNSUP;
 	rjt_data.explan = ELS_EXPL_NONE;
-	lport->tt.seq_els_rsp_send(seq, ELS_LS_RJT, &rjt_data);
+	lport->tt.seq_els_rsp_send(fp, ELS_LS_RJT, &rjt_data);
 	fc_frame_free(fp);
 }