From patchwork Mon Apr 13 12:29:21 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Michael Wang X-Patchwork-Id: 6207871 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 A86A5BF4A6 for ; Mon, 13 Apr 2015 12:29:44 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id A359C202B4 for ; Mon, 13 Apr 2015 12:29:43 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 93EEC2026F for ; Mon, 13 Apr 2015 12:29:42 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932278AbbDMM32 (ORCPT ); Mon, 13 Apr 2015 08:29:28 -0400 Received: from mail-wi0-f173.google.com ([209.85.212.173]:37162 "EHLO mail-wi0-f173.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932244AbbDMM3Z (ORCPT ); Mon, 13 Apr 2015 08:29:25 -0400 Received: by widdi4 with SMTP id di4so49565410wid.0 for ; Mon, 13 Apr 2015 05:29:24 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:message-id:date:from:user-agent:mime-version:to :cc:subject:references:in-reply-to:content-type :content-transfer-encoding; bh=3h2TqLIA95L2mxdrYm5zv1/lHSt09u9yQHBYQ/JvUWU=; b=gACJSbHhTBawNSD55m4Mn/UQwL+DD6TL7+xUs6uW+mK0qsKBkEWhNBnTuhjgckynz1 /kqtY6Df6hO6XcvYzyH1UpNjXgrtSvsXbDm7j+dRSqNxS8Hdn5GMxZV33rnlD5PZxQa/ hcGtfbqTFvAwoV0mI1AvBFpA1AgJMGViZi/8agkIJjSMrk41qAb0c528jjhHngLXJVTm jBJ5/3QaU1zPkKRIIMAUCKSpd+iX5ZRhh10PlFyOBRIPmE1o9+RTQ6H3bTH7V6VM/lHO FXZKgfR2MKp9TSZ9caLDRn86dRVy+BBgVq0gWo+Df7I4q2Wm0ch6r2H4OuLIis2hUr12 mhwA== X-Gm-Message-State: ALoCoQkBx9NTjOXF+V9j35q7i8dHgx2o3x5OcF1N+NqVY7PYhKF4XJwuXt6W4CR/DB3s/jXfXTOo X-Received: by 10.180.91.76 with SMTP id cc12mr21608686wib.67.1428928163932; Mon, 13 Apr 2015 05:29:23 -0700 (PDT) Received: from [192.168.71.52] ([62.217.45.26]) by mx.google.com with ESMTPSA id kr5sm11333266wjc.1.2015.04.13.05.29.22 (version=TLSv1.2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Mon, 13 Apr 2015 05:29:23 -0700 (PDT) Message-ID: <552BB6A1.30003@profitbricks.com> Date: Mon, 13 Apr 2015 14:29:21 +0200 From: Michael Wang User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:31.0) Gecko/20100101 Thunderbird/31.6.0 MIME-Version: 1.0 To: Roland Dreier , Sean Hefty , Hal Rosenstock , linux-rdma@vger.kernel.org, linux-kernel@vger.kernel.org CC: Tom Tucker , Steve Wise , Hoang-Nam Nguyen , Christoph Raisch , Mike Marciniszyn , Eli Cohen , Faisal Latif , Jack Morgenstein , Or Gerlitz , Haggai Eran , Ira Weiny , Tom Talpey , Jason Gunthorpe , Doug Ledford , Michael Wang Subject: [PATCH v3 14/28] IB/Verbs: Reform cma_acquire_dev() References: <552BB470.4090407@profitbricks.com> In-Reply-To: <552BB470.4090407@profitbricks.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=-5.2 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, T_RP_MATCHES_RCVD, UNPARSEABLE_RELAY, URIBL_BLACK 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 Reform cma_acquire_dev() with management helpers, introduce cma_validate_port() to make the code more clean. Cc: Steve Wise Cc: Tom Talpey Cc: Jason Gunthorpe Cc: Doug Ledford Cc: Ira Weiny Cc: Sean Hefty Signed-off-by: Michael Wang --- drivers/infiniband/core/cma.c | 69 +++++++++++++++++++++++++------------------ 1 file changed, 41 insertions(+), 28 deletions(-) diff --git a/drivers/infiniband/core/cma.c b/drivers/infiniband/core/cma.c index d2052a4..c528d17 100644 --- a/drivers/infiniband/core/cma.c +++ b/drivers/infiniband/core/cma.c @@ -370,18 +370,36 @@ static int cma_translate_addr(struct sockaddr *addr, struct rdma_dev_addr *dev_a return ret; } +static inline int cma_validate_port(struct ib_device *device, u8 port, + union ib_gid *gid, int dev_type) +{ + u8 found_port; + int ret = -ENODEV; + + if ((dev_type == ARPHRD_INFINIBAND) && !rdma_tech_ib(device, port)) + return ret; + + if ((dev_type != ARPHRD_INFINIBAND) && rdma_tech_ib(device, port)) + return ret; + + ret = ib_find_cached_gid(device, gid, &found_port, NULL); + + if (!ret && (port == found_port)) + return 0; + + return ret; +} + static int cma_acquire_dev(struct rdma_id_private *id_priv, struct rdma_id_private *listen_id_priv) { struct rdma_dev_addr *dev_addr = &id_priv->id.route.addr.dev_addr; struct cma_device *cma_dev; - union ib_gid gid, iboe_gid; + union ib_gid gid, iboe_gid, *gidp; int ret = -ENODEV; - u8 port, found_port; - enum rdma_link_layer dev_ll = dev_addr->dev_type == ARPHRD_INFINIBAND ? - IB_LINK_LAYER_INFINIBAND : IB_LINK_LAYER_ETHERNET; + u8 port; - if (dev_ll != IB_LINK_LAYER_INFINIBAND && + if (dev_addr->dev_type != ARPHRD_INFINIBAND && id_priv->id.ps == RDMA_PS_IPOIB) return -EINVAL; @@ -391,41 +409,36 @@ static int cma_acquire_dev(struct rdma_id_private *id_priv, memcpy(&gid, dev_addr->src_dev_addr + rdma_addr_gid_offset(dev_addr), sizeof gid); - if (listen_id_priv && - rdma_port_get_link_layer(listen_id_priv->id.device, - listen_id_priv->id.port_num) == dev_ll) { + + if (listen_id_priv) { cma_dev = listen_id_priv->cma_dev; port = listen_id_priv->id.port_num; - if (rdma_node_get_transport(cma_dev->device->node_type) == RDMA_TRANSPORT_IB && - rdma_port_get_link_layer(cma_dev->device, port) == IB_LINK_LAYER_ETHERNET) - ret = ib_find_cached_gid(cma_dev->device, &iboe_gid, - &found_port, NULL); - else - ret = ib_find_cached_gid(cma_dev->device, &gid, - &found_port, NULL); + gidp = rdma_tech_iboe(cma_dev->device, port) ? + &iboe_gid : &gid; - if (!ret && (port == found_port)) { - id_priv->id.port_num = found_port; + ret = cma_validate_port(cma_dev->device, port, gidp, + dev_addr->dev_type); + if (!ret) { + id_priv->id.port_num = port; goto out; } } + list_for_each_entry(cma_dev, &dev_list, list) { for (port = 1; port <= cma_dev->device->phys_port_cnt; ++port) { if (listen_id_priv && listen_id_priv->cma_dev == cma_dev && listen_id_priv->id.port_num == port) continue; - if (rdma_port_get_link_layer(cma_dev->device, port) == dev_ll) { - if (rdma_node_get_transport(cma_dev->device->node_type) == RDMA_TRANSPORT_IB && - rdma_port_get_link_layer(cma_dev->device, port) == IB_LINK_LAYER_ETHERNET) - ret = ib_find_cached_gid(cma_dev->device, &iboe_gid, &found_port, NULL); - else - ret = ib_find_cached_gid(cma_dev->device, &gid, &found_port, NULL); - - if (!ret && (port == found_port)) { - id_priv->id.port_num = found_port; - goto out; - } + + gidp = rdma_tech_iboe(cma_dev->device, port) ? + &iboe_gid : &gid; + + ret = cma_validate_port(cma_dev->device, port, gidp, + dev_addr->dev_type); + if (!ret) { + id_priv->id.port_num = port; + goto out; } } }