From: Ralph Campbell Date: Mon, 27 Oct 2008 22:31:25 +0000 (-0700) Subject: IB/ipath: Fix RDMA write with immediate copy of last packet X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=a8b56f296d7d977fea2512e353a131f8da490aa5;p=mv-sheeva.git IB/ipath: Fix RDMA write with immediate copy of last packet When the last packet of a RDMA write with immediate is received, the next receive work queue entry ID should be used to generate a completion entry. The code was incorrectly resetting part of the state used to copy the last packet. Signed-off-by: Ralph Campbell Signed-off-by: Roland Dreier --- diff --git a/drivers/infiniband/hw/ipath/ipath_ruc.c b/drivers/infiniband/hw/ipath/ipath_ruc.c index fc0f6d9e603..2296832f94d 100644 --- a/drivers/infiniband/hw/ipath/ipath_ruc.c +++ b/drivers/infiniband/hw/ipath/ipath_ruc.c @@ -156,7 +156,7 @@ bail: /** * ipath_get_rwqe - copy the next RWQE into the QP's RWQE * @qp: the QP - * @wr_id_only: update wr_id only, not SGEs + * @wr_id_only: update qp->r_wr_id only, not qp->r_sge * * Return 0 if no RWQE is available, otherwise return 1. * @@ -173,8 +173,6 @@ int ipath_get_rwqe(struct ipath_qp *qp, int wr_id_only) u32 tail; int ret; - qp->r_sge.sg_list = qp->r_sg_list; - if (qp->ibqp.srq) { srq = to_isrq(qp->ibqp.srq); handler = srq->ibsrq.event_handler; @@ -206,8 +204,10 @@ int ipath_get_rwqe(struct ipath_qp *qp, int wr_id_only) wqe = get_rwqe_ptr(rq, tail); if (++tail >= rq->size) tail = 0; - } while (!wr_id_only && !ipath_init_sge(qp, wqe, &qp->r_len, - &qp->r_sge)); + if (wr_id_only) + break; + qp->r_sge.sg_list = qp->r_sg_list; + } while (!ipath_init_sge(qp, wqe, &qp->r_len, &qp->r_sge)); qp->r_wr_id = wqe->wr_id; wq->tail = tail;