From patchwork Wed Jul 2 06:11:15 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Hefty, Sean" X-Patchwork-Id: 4463661 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 [198.145.19.201]) by patchwork1.web.kernel.org (Postfix) with ESMTP id CE61B9F26C for ; Wed, 2 Jul 2014 06:12:16 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 0C72C20259 for ; Wed, 2 Jul 2014 06:12:15 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 23E9320211 for ; Wed, 2 Jul 2014 06:12:14 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753941AbaGBGMJ (ORCPT ); Wed, 2 Jul 2014 02:12:09 -0400 Received: from mga01.intel.com ([192.55.52.88]:11022 "EHLO mga01.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752662AbaGBGMD (ORCPT ); Wed, 2 Jul 2014 02:12:03 -0400 Received: from fmsmga002.fm.intel.com ([10.253.24.26]) by fmsmga101.fm.intel.com with ESMTP; 01 Jul 2014 23:11:55 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.01,586,1400050800"; d="scan'208";a="563985227" Received: from cst-linux.jf.intel.com ([10.23.221.72]) by fmsmga002.fm.intel.com with ESMTP; 01 Jul 2014 23:11:39 -0700 From: sean.hefty@intel.com To: linux-rdma@vger.kernel.org Cc: Sean Hefty Subject: [PATCH 4/8] rdmacm: Add functionality to allocate an XRCD Date: Tue, 1 Jul 2014 23:11:15 -0700 Message-Id: <1404281479-6755-5-git-send-email-sean.hefty@intel.com> X-Mailer: git-send-email 1.7.3 In-Reply-To: <1404281479-6755-1-git-send-email-sean.hefty@intel.com> References: <1404281479-6755-1-git-send-email-sean.hefty@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=-6.9 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, T_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 From: Sean Hefty XRC QPs and SRQs are associated by an XRC domain. Provide a call to allocate an XRCD, similar to how the rdmacm allocates a PD for the user. Signed-off-by: Sean Hefty --- src/cma.c | 22 +++++++++++++++++++++- 1 files changed, 21 insertions(+), 1 deletions(-) diff --git a/src/cma.c b/src/cma.c index 192d9ed..52d81ff 100644 --- a/src/cma.c +++ b/src/cma.c @@ -76,6 +76,7 @@ do { \ struct cma_device { struct ibv_context *verbs; struct ibv_pd *pd; + struct ibv_xrcd *xrcd; uint64_t guid; int port_cnt; int refcnt; @@ -439,9 +440,28 @@ out: static void ucma_put_device(struct cma_device *cma_dev) { pthread_mutex_lock(&mut); - if (!--cma_dev->refcnt) + if (!--cma_dev->refcnt) { ibv_dealloc_pd(cma_dev->pd); + if (cma_dev->xrcd) + ibv_close_xrcd(cma_dev->xrcd); + } + pthread_mutex_unlock(&mut); +} + +static struct ibv_xrcd *ucma_get_xrcd(struct cma_device *cma_dev) +{ + struct ibv_xrcd_init_attr attr; + + pthread_mutex_lock(&mut); + if (!cma_dev->xrcd) { + memset(&attr, 0, sizeof attr); + attr.comp_mask = IBV_XRCD_INIT_ATTR_FD | IBV_XRCD_INIT_ATTR_OFLAGS; + attr.fd = -1; + attr.oflags = O_CREAT; + cma_dev->xrcd = ibv_open_xrcd(cma_dev->verbs, &attr); + } pthread_mutex_unlock(&mut); + return cma_dev->xrcd; } static void ucma_insert_id(struct cma_id_private *id_priv)