From patchwork Thu Mar 3 18:03:07 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christoph Hellwig X-Patchwork-Id: 8495181 Return-Path: X-Original-To: patchwork-linux-rdma@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork1.web.kernel.org (Postfix) with ESMTP id 34F709F38C for ; Thu, 3 Mar 2016 18:03:35 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id C987D20386 for ; Thu, 3 Mar 2016 18:03:32 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id BFE842037E for ; Thu, 3 Mar 2016 18:03:31 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755484AbcCCSDW (ORCPT ); Thu, 3 Mar 2016 13:03:22 -0500 Received: from casper.infradead.org ([85.118.1.10]:46336 "EHLO casper.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756575AbcCCSDU (ORCPT ); Thu, 3 Mar 2016 13:03:20 -0500 Received: from chello080109146114.tirol.surfer.at ([80.109.146.114] helo=localhost) by casper.infradead.org with esmtpsa (Exim 4.85 #2 (Red Hat Linux)) id 1abXao-0004RQ-JO; Thu, 03 Mar 2016 18:03:18 +0000 From: Christoph Hellwig To: linux-rdma@vger.kernel.org Cc: swise@opengridcomputing.com, sagig@mellanox.com, bart.vanassche@sandisk.com, target-devel@vger.kernel.org Subject: [PATCH 3/8] IB/core: refactor ib_create_qp Date: Thu, 3 Mar 2016 19:03:07 +0100 Message-Id: <1457028192-24965-4-git-send-email-hch@lst.de> X-Mailer: git-send-email 2.1.4 In-Reply-To: <1457028192-24965-1-git-send-email-hch@lst.de> References: <1457028192-24965-1-git-send-email-hch@lst.de> X-SRS-Rewrite: SMTP reverse-path rewritten from by casper.infradead.org. See http://www.infradead.org/rpr.html Sender: linux-rdma-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-rdma@vger.kernel.org X-Spam-Status: No, score=-6.9 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 Split the XRC magic into a separate function, and return early on failure to make the initialization code readable. Signed-off-by: Christoph Hellwig Reviewed-by: Steve Wise --- drivers/infiniband/core/verbs.c | 103 +++++++++++++++++++++------------------- 1 file changed, 54 insertions(+), 49 deletions(-) diff --git a/drivers/infiniband/core/verbs.c b/drivers/infiniband/core/verbs.c index eaed99b..7ea0c9c 100644 --- a/drivers/infiniband/core/verbs.c +++ b/drivers/infiniband/core/verbs.c @@ -723,62 +723,67 @@ struct ib_qp *ib_open_qp(struct ib_xrcd *xrcd, } EXPORT_SYMBOL(ib_open_qp); +static struct ib_qp *ib_create_xrc_qp(struct ib_qp *qp, + struct ib_qp_init_attr *qp_init_attr) +{ + struct ib_qp *real_qp = qp; + + qp->event_handler = __ib_shared_qp_event_handler; + qp->qp_context = qp; + qp->pd = NULL; + qp->send_cq = qp->recv_cq = NULL; + qp->srq = NULL; + qp->xrcd = qp_init_attr->xrcd; + atomic_inc(&qp_init_attr->xrcd->usecnt); + INIT_LIST_HEAD(&qp->open_list); + + qp = __ib_open_qp(real_qp, qp_init_attr->event_handler, + qp_init_attr->qp_context); + if (IS_ERR(qp)) + real_qp->device->destroy_qp(real_qp); + else + __ib_insert_xrcd_qp(qp_init_attr->xrcd, real_qp); + return qp; +} + struct ib_qp *ib_create_qp(struct ib_pd *pd, struct ib_qp_init_attr *qp_init_attr) { - struct ib_qp *qp, *real_qp; - struct ib_device *device; + struct ib_device *device = pd ? pd->device : qp_init_attr->xrcd->device; + struct ib_qp *qp; - device = pd ? pd->device : qp_init_attr->xrcd->device; qp = device->create_qp(pd, qp_init_attr, NULL); - - if (!IS_ERR(qp)) { - qp->device = device; - qp->real_qp = qp; - qp->uobject = NULL; - qp->qp_type = qp_init_attr->qp_type; - - atomic_set(&qp->usecnt, 0); - if (qp_init_attr->qp_type == IB_QPT_XRC_TGT) { - qp->event_handler = __ib_shared_qp_event_handler; - qp->qp_context = qp; - qp->pd = NULL; - qp->send_cq = qp->recv_cq = NULL; - qp->srq = NULL; - qp->xrcd = qp_init_attr->xrcd; - atomic_inc(&qp_init_attr->xrcd->usecnt); - INIT_LIST_HEAD(&qp->open_list); - - real_qp = qp; - qp = __ib_open_qp(real_qp, qp_init_attr->event_handler, - qp_init_attr->qp_context); - if (!IS_ERR(qp)) - __ib_insert_xrcd_qp(qp_init_attr->xrcd, real_qp); - else - real_qp->device->destroy_qp(real_qp); - } else { - qp->event_handler = qp_init_attr->event_handler; - qp->qp_context = qp_init_attr->qp_context; - if (qp_init_attr->qp_type == IB_QPT_XRC_INI) { - qp->recv_cq = NULL; - qp->srq = NULL; - } else { - qp->recv_cq = qp_init_attr->recv_cq; - atomic_inc(&qp_init_attr->recv_cq->usecnt); - qp->srq = qp_init_attr->srq; - if (qp->srq) - atomic_inc(&qp_init_attr->srq->usecnt); - } - - qp->pd = pd; - qp->send_cq = qp_init_attr->send_cq; - qp->xrcd = NULL; - - atomic_inc(&pd->usecnt); - atomic_inc(&qp_init_attr->send_cq->usecnt); - } + if (IS_ERR(qp)) + return qp; + + qp->device = device; + qp->real_qp = qp; + qp->uobject = NULL; + qp->qp_type = qp_init_attr->qp_type; + + atomic_set(&qp->usecnt, 0); + if (qp_init_attr->qp_type == IB_QPT_XRC_TGT) + return ib_create_xrc_qp(qp, qp_init_attr); + + qp->event_handler = qp_init_attr->event_handler; + qp->qp_context = qp_init_attr->qp_context; + if (qp_init_attr->qp_type == IB_QPT_XRC_INI) { + qp->recv_cq = NULL; + qp->srq = NULL; + } else { + qp->recv_cq = qp_init_attr->recv_cq; + atomic_inc(&qp_init_attr->recv_cq->usecnt); + qp->srq = qp_init_attr->srq; + if (qp->srq) + atomic_inc(&qp_init_attr->srq->usecnt); } + qp->pd = pd; + qp->send_cq = qp_init_attr->send_cq; + qp->xrcd = NULL; + + atomic_inc(&pd->usecnt); + atomic_inc(&qp_init_attr->send_cq->usecnt); return qp; } EXPORT_SYMBOL(ib_create_qp);