RDMA/cxgb4: Mark QP in error before disabling the queue in firmware

QPs need to be moved to error before telling the firwmare to shutdown
the queue.  Otherwise, the application can submit WRs that will never
get fetched by the hardware and never flushed by the driver.

Signed-off-by: Kumar Sanghvi <kumaras@chelsio.com>
Acked-by: Steve Wise <swsie@opengridcomputing.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>

diff --git a/drivers/infiniband/hw/cxgb4/qp.c b/drivers/infiniband/hw/cxgb4/qp.c
index 62c7262a9eb3fcf14188a1e3becd149e86531a5d..2466cfcc9ffcf8d787abfe1aa5643cf83aa8d8a8 100644 (file)
--- a/drivers/infiniband/hw/cxgb4/qp.c
+++ b/drivers/infiniband/hw/cxgb4/qp.c
@@ -1221,6 +1221,8 @@ int c4iw_modify_qp(struct c4iw_dev *rhp, struct c4iw_qp *qhp,
                                disconnect = 1;
                                c4iw_get_ep(&qhp->ep->com);
                        }
+                       if (qhp->ibqp.uobject)
+                               t4_set_wq_in_error(&qhp->wq);
                        ret = rdma_fini(rhp, qhp, ep);
                        if (ret)
                                goto err;
@@ -1237,6 +1239,8 @@ int c4iw_modify_qp(struct c4iw_dev *rhp, struct c4iw_qp *qhp,
                        break;
                case C4IW_QP_STATE_ERROR:
                        set_state(qhp, C4IW_QP_STATE_ERROR);
+                       if (qhp->ibqp.uobject)
+                               t4_set_wq_in_error(&qhp->wq);
                        if (!internal) {
                                abort = 1;
                                disconnect = 1;