RDMA/bnxt_re: Report MISSED_EVENTS in req_notify_cq

[karo-tx-linux.git] / drivers / infiniband / hw / bnxt_re / qplib_fp.c

diff --git a/drivers/infiniband/hw/bnxt_re/qplib_fp.c b/drivers/infiniband/hw/bnxt_re/qplib_fp.c
index 8ef39df2f44fa4188da2b401c1631e752ace752a..9af1514e59448fbf83315a03421048c9f64a14fc 100644 (file)
--- a/drivers/infiniband/hw/bnxt_re/qplib_fp.c
+++ b/drivers/infiniband/hw/bnxt_re/qplib_fp.c
@@ -1895,6 +1895,25 @@ flush_rq:
        return rc;
 }
 
+bool bnxt_qplib_is_cq_empty(struct bnxt_qplib_cq *cq)
+{
+       struct cq_base *hw_cqe, **hw_cqe_ptr;
+       unsigned long flags;
+       u32 sw_cons, raw_cons;
+       bool rc = true;
+
+       spin_lock_irqsave(&cq->hwq.lock, flags);
+       raw_cons = cq->hwq.cons;
+       sw_cons = HWQ_CMP(raw_cons, &cq->hwq);
+       hw_cqe_ptr = (struct cq_base **)cq->hwq.pbl_ptr;
+       hw_cqe = &hw_cqe_ptr[CQE_PG(sw_cons)][CQE_IDX(sw_cons)];
+
+        /* Check for Valid bit. If the CQE is valid, return false */
+       rc = !CQE_CMP_VALID(hw_cqe, raw_cons, cq->hwq.max_elements);
+       spin_unlock_irqrestore(&cq->hwq.lock, flags);
+       return rc;
+}
+
 static int bnxt_qplib_cq_process_res_raweth_qp1(struct bnxt_qplib_cq *cq,
                                                struct cq_res_raweth_qp1 *hwcqe,
                                                struct bnxt_qplib_cqe **pcqe,