RDMA/ocrdma: Cache recv DB until QP moved to RTR

1) In post recv, don't ring the DB doorbell if the QP is in RTR state.
   Cache the DB calls, until the QP is moved to RTS state.
2) Add max_rd_sge support to dev->attr.
3) Code cleanup in alloc_pd path.

Signed-off-by: Naresh Gottumukkala <bgottumukkala@emulex.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>

1 files changed, 3 insertions, 0 deletions

diff --git a/drivers/infiniband/hw/ocrdma/ocrdma_hw.c b/drivers/infiniband/hw/ocrdma/ocrdma_hw.c
index c4bb29c9d48a..97bb1ce8d243 100644
--- a/drivers/infiniband/hw/ocrdma/ocrdma_hw.c
+++ b/drivers/infiniband/hw/ocrdma/ocrdma_hw.c
@@ -992,6 +992,9 @@ static void ocrdma_get_attr(struct ocrdma_dev *dev,
         attr->max_srq_sge = (rsp->max_srq_rqe_sge &
                               OCRDMA_MBX_QUERY_CFG_MAX_SRQ_SGE_MASK) >>
             OCRDMA_MBX_QUERY_CFG_MAX_SRQ_SGE_OFFSET;
+        attr->max_rdma_sge = (rsp->max_write_send_sge &
+                              OCRDMA_MBX_QUERY_CFG_MAX_WRITE_SGE_MASK) >>
+            OCRDMA_MBX_QUERY_CFG_MAX_WRITE_SGE_SHIFT;
         attr->max_ord_per_qp = (rsp->max_ird_ord_per_qp &
                                 OCRDMA_MBX_QUERY_CFG_MAX_ORD_PER_QP_MASK) >>
             OCRDMA_MBX_QUERY_CFG_MAX_ORD_PER_QP_SHIFT;