IB/qib: Remove qib_post_receive and use rdmavt version

This patch removes the simple post recv function in favor of using rdmavt.
The packet receive processing still lives in the driver though.

Reviewed-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: Harish Chegondi <harish.chegondi@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>

diff --git a/drivers/infiniband/hw/qib/qib_verbs.c b/drivers/infiniband/hw/qib/qib_verbs.c
index 3766ea4..add899b 100644 (file)
--- a/drivers/infiniband/hw/qib/qib_verbs.c
+++ b/drivers/infiniband/hw/qib/qib_verbs.c
@@ -300,68 +300,6 @@ static void qib_copy_from_sge(void *data, struct rvt_sge_state *ss, u32 length)
        }
 }
 
-/**
-
- * qib_post_receive - post a receive on a QP
- * @ibqp: the QP to post the receive on
- * @wr: the WR to post
- * @bad_wr: the first bad WR is put here
- *
- * This may be called from interrupt context.
- */
-static int qib_post_receive(struct ib_qp *ibqp, struct ib_recv_wr *wr,
-                           struct ib_recv_wr **bad_wr)
-{
-       struct rvt_qp *qp = ibqp_to_rvtqp(ibqp);
-       struct rvt_rwq *wq = qp->r_rq.wq;
-       unsigned long flags;
-       int ret;
-
-       /* Check that state is OK to post receive. */
-       if (!(ib_rvt_state_ops[qp->state] & RVT_POST_RECV_OK) || !wq) {
-               *bad_wr = wr;
-               ret = -EINVAL;
-               goto bail;
-       }
-
-       for (; wr; wr = wr->next) {
-               struct rvt_rwqe *wqe;
-               u32 next;
-               int i;
-
-               if ((unsigned) wr->num_sge > qp->r_rq.max_sge) {
-                       *bad_wr = wr;
-                       ret = -EINVAL;
-                       goto bail;
-               }
-
-               spin_lock_irqsave(&qp->r_rq.lock, flags);
-               next = wq->head + 1;
-               if (next >= qp->r_rq.size)
-                       next = 0;
-               if (next == wq->tail) {
-                       spin_unlock_irqrestore(&qp->r_rq.lock, flags);
-                       *bad_wr = wr;
-                       ret = -ENOMEM;
-                       goto bail;
-               }
-
-               wqe = get_rwqe_ptr(&qp->r_rq, wq->head);
-               wqe->wr_id = wr->wr_id;
-               wqe->num_sge = wr->num_sge;
-               for (i = 0; i < wr->num_sge; i++)
-                       wqe->sg_list[i] = wr->sg_list[i];
-               /* Make sure queue entry is written before the head index. */
-               smp_wmb();
-               wq->head = next;
-               spin_unlock_irqrestore(&qp->r_rq.lock, flags);
-       }
-       ret = 0;
-
-bail:
-       return ret;
-}
-
 /**
  * qib_qp_rcv - processing an incoming packet on a QP
  * @rcd: the context pointer
@@ -1826,7 +1764,7 @@ int qib_register_ib_device(struct qib_devdata *dd)
        ibdev->query_qp = qib_query_qp;
        ibdev->destroy_qp = qib_destroy_qp;
        ibdev->post_send = NULL;
-       ibdev->post_recv = qib_post_receive;
+       ibdev->post_recv = NULL;
        ibdev->post_srq_recv = qib_post_srq_receive;
        ibdev->create_cq = NULL;
        ibdev->destroy_cq = NULL;