1 files changed, 29 insertions, 0 deletions

diff --git a/drivers/infiniband/hw/bnxt_re/qplib_fp.c b/drivers/infiniband/hw/bnxt_re/qplib_fp.c
index f05500bcdcf1..9af1514e5944 100644
--- a/drivers/infiniband/hw/bnxt_re/qplib_fp.c
+++ b/drivers/infiniband/hw/bnxt_re/qplib_fp.c
@@ -1128,6 +1128,11 @@ int bnxt_qplib_post_send(struct bnxt_qplib_qp *qp,
                 }
                 /* Each SGE entry = 1 WQE size16 */
                 wqe_size16 = wqe->num_sge;
+                /* HW requires wqe size has room for atleast one SGE even if
+                 * none was supplied by ULP
+                 */
+                if (!wqe->num_sge)
+                        wqe_size16++;
         }
 
         /* Specifics */
@@ -1364,6 +1369,11 @@ int bnxt_qplib_post_recv(struct bnxt_qplib_qp *qp,
         rqe->flags = wqe->flags;
         rqe->wqe_size = wqe->num_sge +
                         ((offsetof(typeof(*rqe), data) + 15) >> 4);
+        /* HW requires wqe size has room for atleast one SGE even if none
+         * was supplied by ULP
+         */
+        if (!wqe->num_sge)
+                rqe->wqe_size++;
 
         /* Supply the rqe->wr_id index to the wr_id_tbl for now */
         rqe->wr_id[0] = cpu_to_le32(sw_prod);
@@ -1885,6 +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,