From patchwork Wed Apr 13 14:30:52 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Ismail, Mustafa" X-Patchwork-Id: 8822831 Return-Path: X-Original-To: patchwork-linux-rdma@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork2.web.kernel.org (Postfix) with ESMTP id 985C4C0553 for ; Wed, 13 Apr 2016 14:32:04 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id B21E42034C for ; Wed, 13 Apr 2016 14:32:03 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 9E9F62025B for ; Wed, 13 Apr 2016 14:32:02 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S965669AbcDMOb5 (ORCPT ); Wed, 13 Apr 2016 10:31:57 -0400 Received: from mga02.intel.com ([134.134.136.20]:30790 "EHLO mga02.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S933981AbcDMObz (ORCPT ); Wed, 13 Apr 2016 10:31:55 -0400 Received: from fmsmga004.fm.intel.com ([10.253.24.48]) by orsmga101.jf.intel.com with ESMTP; 13 Apr 2016 07:31:43 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.24,479,1455004800"; d="scan'208";a="84417296" Received: from mustafai-mobl.amr.corp.intel.com ([10.122.33.2]) by fmsmga004.fm.intel.com with ESMTP; 13 Apr 2016 07:31:42 -0700 From: Mustafa Ismail To: dledford@redhat.com Cc: linux-rdma@vger.kernel.org, e1000-rdma@lists.sourceforge.net Subject: [RDMA PATCH 16/16] RDMA/i40iw: Adding queue drain functions Date: Wed, 13 Apr 2016 09:30:52 -0500 Message-Id: <1460557852-10824-17-git-send-email-mustafa.ismail@intel.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1460557852-10824-1-git-send-email-mustafa.ismail@intel.com> References: <1460557852-10824-1-git-send-email-mustafa.ismail@intel.com> Sender: linux-rdma-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-rdma@vger.kernel.org X-Spam-Status: No, score=-7.9 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Adding sq and rq drain functions, which block until all previously posted wr-s in the specified queue have completed. A completion object is signaled to unblock the thread, when the last cqe for the corresponding queue is processed. Signed-off-by: Mustafa Ismail Signed-off-by: Faisal Latif --- drivers/infiniband/hw/i40iw/i40iw_verbs.c | 38 +++++++++++++++++++++++++++++++ drivers/infiniband/hw/i40iw/i40iw_verbs.h | 2 ++ 2 files changed, 40 insertions(+) diff --git a/drivers/infiniband/hw/i40iw/i40iw_verbs.c b/drivers/infiniband/hw/i40iw/i40iw_verbs.c index 196d6f0..bf4e1e3 100644 --- a/drivers/infiniband/hw/i40iw/i40iw_verbs.c +++ b/drivers/infiniband/hw/i40iw/i40iw_verbs.c @@ -789,6 +789,8 @@ static struct ib_qp *i40iw_create_qp(struct ib_pd *ibpd, return ERR_PTR(err_code); } } + init_completion(&iwqp->sq_drained); + init_completion(&iwqp->rq_drained); return &iwqp->ibqp; error: @@ -1582,6 +1584,32 @@ static int i40iw_map_mr_sg(struct ib_mr *ibmr, struct scatterlist *sg, int sg_ne } /** + * i40iw_drain_sq - drain the send queue + * @ibqp: ib qp pointer + */ +static void i40iw_drain_sq(struct ib_qp *ibqp) +{ + struct i40iw_qp *iwqp = to_iwqp(ibqp); + struct i40iw_sc_qp *qp = &iwqp->sc_qp; + + if (I40IW_RING_MORE_WORK(qp->qp_uk.sq_ring)) + wait_for_completion(&iwqp->sq_drained); +} + +/** + * i40iw_drain_rq - drain the receive queue + * @ibqp: ib qp pointer + */ +static void i40iw_drain_rq(struct ib_qp *ibqp) +{ + struct i40iw_qp *iwqp = to_iwqp(ibqp); + struct i40iw_sc_qp *qp = &iwqp->sc_qp; + + if (I40IW_RING_MORE_WORK(qp->qp_uk.rq_ring)) + wait_for_completion(&iwqp->rq_drained); +} + +/** * i40iw_hwreg_mr - send cqp command for memory registration * @iwdev: iwarp device * @iwmr: iwarp mr pointer @@ -2218,6 +2246,7 @@ static int i40iw_poll_cq(struct ib_cq *ibcq, enum i40iw_status_code ret; struct i40iw_cq_uk *ukcq; struct i40iw_sc_qp *qp; + struct i40iw_qp *iwqp; unsigned long flags; iwcq = (struct i40iw_cq *)ibcq; @@ -2268,6 +2297,13 @@ static int i40iw_poll_cq(struct ib_cq *ibcq, qp = (struct i40iw_sc_qp *)cq_poll_info.qp_handle; entry->qp = (struct ib_qp *)qp->back_qp; entry->src_qp = cq_poll_info.qp_id; + iwqp = (struct i40iw_qp *)qp->back_qp; + if (iwqp->iwarp_state > I40IW_QP_STATE_RTS) { + if (!I40IW_RING_MORE_WORK(qp->qp_uk.sq_ring)) + complete(&iwqp->sq_drained); + if (!I40IW_RING_MORE_WORK(qp->qp_uk.rq_ring)) + complete(&iwqp->rq_drained); + } entry->byte_len = cq_poll_info.bytes_xfered; entry++; cqe_count++; @@ -2514,6 +2550,8 @@ static struct i40iw_ib_device *i40iw_init_rdma_device(struct i40iw_device *iwdev iwibdev->ibdev.query_device = i40iw_query_device; iwibdev->ibdev.create_ah = i40iw_create_ah; iwibdev->ibdev.destroy_ah = i40iw_destroy_ah; + iwibdev->ibdev.drain_sq = i40iw_drain_sq; + iwibdev->ibdev.drain_rq = i40iw_drain_rq; iwibdev->ibdev.alloc_mr = i40iw_alloc_mr; iwibdev->ibdev.map_mr_sg = i40iw_map_mr_sg; iwibdev->ibdev.iwcm = kzalloc(sizeof(*iwibdev->ibdev.iwcm), GFP_KERNEL); diff --git a/drivers/infiniband/hw/i40iw/i40iw_verbs.h b/drivers/infiniband/hw/i40iw/i40iw_verbs.h index 0acb6c8..0069be8 100644 --- a/drivers/infiniband/hw/i40iw/i40iw_verbs.h +++ b/drivers/infiniband/hw/i40iw/i40iw_verbs.h @@ -170,5 +170,7 @@ struct i40iw_qp { struct i40iw_pbl *iwpbl; struct i40iw_dma_mem q2_ctx_mem; struct i40iw_dma_mem ietf_mem; + struct completion sq_drained; + struct completion rq_drained; }; #endif