From patchwork Mon Dec 10 03:04:41 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Saeed Mahameed X-Patchwork-Id: 10720583 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 43E1514E2 for ; Mon, 10 Dec 2018 03:05:36 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 34091286DF for ; Mon, 10 Dec 2018 03:05:36 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 286E529D12; Mon, 10 Dec 2018 03:05:36 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.9 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, RCVD_IN_DNSWL_HI,UNPARSEABLE_RELAY autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id CDE0E286DF for ; Mon, 10 Dec 2018 03:05:35 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726603AbeLJDFb (ORCPT ); Sun, 9 Dec 2018 22:05:31 -0500 Received: from mail-il-dmz.mellanox.com ([193.47.165.129]:51404 "EHLO mellanox.co.il" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1726554AbeLJDFa (ORCPT ); Sun, 9 Dec 2018 22:05:30 -0500 Received: from Internal Mail-Server by MTLPINE1 (envelope-from saeedm@mellanox.com) with ESMTPS (AES256-SHA encrypted); 10 Dec 2018 05:11:31 +0200 Received: from sx1.mtl.com ([172.16.5.55]) by labmailer.mlnx (8.13.8/8.13.8) with ESMTP id wBA34sGR008514; Mon, 10 Dec 2018 05:05:22 +0200 From: Saeed Mahameed To: Leon Romanovsky , saeedm@mellanox.com Cc: netdev@vger.kernel.org, linux-rdma@vger.kernel.org, Jason Gunthorpe , Or Gerlitz Subject: [PATCH mlx5-next 09/10] IB/mlx5: Simplify netdev unbinding Date: Sun, 9 Dec 2018 19:04:41 -0800 Message-Id: <20181210030442.7543-10-saeedm@mellanox.com> X-Mailer: git-send-email 2.19.2 In-Reply-To: <20181210030442.7543-1-saeedm@mellanox.com> References: <20181210030442.7543-1-saeedm@mellanox.com> MIME-Version: 1.0 Sender: linux-rdma-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-rdma@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP From: Or Gerlitz When dealing with netdev unregister events, we just need to know that this is our currently bounded netdev. There's no need to do any further checks/queries. This patch doesn't change any functionality. Signed-off-by: Or Gerlitz Reviewed-by: Mark Bloch Signed-off-by: Saeed Mahameed --- drivers/infiniband/hw/mlx5/main.c | 14 +++++++++----- 1 file changed, 9 insertions(+), 5 deletions(-) diff --git a/drivers/infiniband/hw/mlx5/main.c b/drivers/infiniband/hw/mlx5/main.c index 2560996fce79..fd8cbf58f0bf 100644 --- a/drivers/infiniband/hw/mlx5/main.c +++ b/drivers/infiniband/hw/mlx5/main.c @@ -172,7 +172,6 @@ static int mlx5_netdev_event(struct notifier_block *this, switch (event) { case NETDEV_REGISTER: - case NETDEV_UNREGISTER: write_lock(&roce->netdev_lock); if (ibdev->rep) { struct mlx5_eswitch *esw = ibdev->mdev->priv.eswitch; @@ -181,15 +180,20 @@ static int mlx5_netdev_event(struct notifier_block *this, rep_ndev = mlx5_ib_get_rep_netdev(esw, ibdev->rep->vport); if (rep_ndev == ndev) - roce->netdev = (event == NETDEV_UNREGISTER) ? - NULL : ndev; + roce->netdev = ndev; } else if (ndev->dev.parent == &mdev->pdev->dev) { - roce->netdev = (event == NETDEV_UNREGISTER) ? - NULL : ndev; + roce->netdev = ndev; } write_unlock(&roce->netdev_lock); break; + case NETDEV_UNREGISTER: + write_lock(&roce->netdev_lock); + if (roce->netdev == ndev) + roce->netdev = NULL; + write_unlock(&roce->netdev_lock); + break; + case NETDEV_CHANGE: case NETDEV_UP: case NETDEV_DOWN: {