i40iw: Send last streaming mode message for loopback connections

Send a zero length last streaming mode message for loopback
connections to synchronize between accepting QP and connecting QP.
This avoids data transfer to start on the accepting QP before
the connecting QP is in RTS. Also remove function i40iw_loopback_nop()
as it is no longer used.

Fixes: f27b4746f378 ("i40iw: add connection management code")
Signed-off-by: Tatyana Nikolova <tatyana.e.nikolova@intel.com>
Signed-off-by: Shiraz Saleem <shiraz.saleem@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>

diff --git a/drivers/infiniband/hw/i40iw/i40iw_cm.c b/drivers/infiniband/hw/i40iw/i40iw_cm.c
index 64343985e0b7d5f452d8df70ad5672ef75f55c9b..7ca0638579c0b31d9cd0fdc71ea6858b77dba7ea 100644 (file)
--- a/drivers/infiniband/hw/i40iw/i40iw_cm.c
+++ b/drivers/infiniband/hw/i40iw/i40iw_cm.c
@@ -3346,26 +3346,6 @@ int i40iw_cm_disconn(struct i40iw_qp *iwqp)
        return 0;
 }
 
-/**
- * i40iw_loopback_nop - Send a nop
- * @qp: associated hw qp
- */
-static void i40iw_loopback_nop(struct i40iw_sc_qp *qp)
-{
-       u64 *wqe;
-       u64 header;
-
-       wqe = qp->qp_uk.sq_base->elem;
-       set_64bit_val(wqe, 0, 0);
-       set_64bit_val(wqe, 8, 0);
-       set_64bit_val(wqe, 16, 0);
-
-       header = LS_64(I40IWQP_OP_NOP, I40IWQPSQ_OPCODE) |
-           LS_64(0, I40IWQPSQ_SIGCOMPL) |
-           LS_64(qp->qp_uk.swqe_polarity, I40IWQPSQ_VALID);
-       set_64bit_val(wqe, 24, header);
-}
-
 /**
  * i40iw_qp_disconnect - free qp and close cm
  * @iwqp: associate qp for the connection
@@ -3638,7 +3618,7 @@ int i40iw_accept(struct iw_cm_id *cm_id, struct iw_cm_conn_param *conn_param)
        } else {
                if (iwqp->page)
                        iwqp->sc_qp.qp_uk.sq_base = kmap(iwqp->page);
-               i40iw_loopback_nop(&iwqp->sc_qp);
+               dev->iw_priv_qp_ops->qp_send_lsmm(&iwqp->sc_qp, NULL, 0, 0);
        }
 
        if (iwqp->page)