From patchwork Wed Apr 3 03:07:59 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: tanhuazhong X-Patchwork-Id: 1075287 X-Patchwork-Delegate: davem@davemloft.net Return-Path: X-Original-To: patchwork-incoming-netdev@ozlabs.org Delivered-To: patchwork-incoming-netdev@ozlabs.org Authentication-Results: ozlabs.org; spf=none (mailfrom) smtp.mailfrom=vger.kernel.org (client-ip=209.132.180.67; helo=vger.kernel.org; envelope-from=netdev-owner@vger.kernel.org; receiver=) Authentication-Results: ozlabs.org; dmarc=none (p=none dis=none) header.from=huawei.com Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 44YrgF5TRZz9sS3 for ; Wed, 3 Apr 2019 14:10:33 +1100 (AEDT) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728345AbfDCDJV (ORCPT ); Tue, 2 Apr 2019 23:09:21 -0400 Received: from szxga06-in.huawei.com ([45.249.212.32]:33824 "EHLO huawei.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1726565AbfDCDJU (ORCPT ); Tue, 2 Apr 2019 23:09:20 -0400 Received: from DGGEMS411-HUB.china.huawei.com (unknown [10.3.19.211]) by Forcepoint Email with ESMTP id 11810955FD23A37C811C; Wed, 3 Apr 2019 11:09:18 +0800 (CST) Received: from localhost.localdomain (10.67.212.132) by DGGEMS411-HUB.china.huawei.com (10.3.19.211) with Microsoft SMTP Server id 14.3.408.0; Wed, 3 Apr 2019 11:09:10 +0800 From: Huazhong Tan To: CC: , , , , , Huazhong Tan , Peng Li Subject: [PATCH net-next 10/12] net: hns3: prevent change MTU when resetting Date: Wed, 3 Apr 2019 11:07:59 +0800 Message-ID: <1554260881-44948-11-git-send-email-tanhuazhong@huawei.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1554260881-44948-1-git-send-email-tanhuazhong@huawei.com> References: <1554260881-44948-1-git-send-email-tanhuazhong@huawei.com> MIME-Version: 1.0 X-Originating-IP: [10.67.212.132] Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org When resetting, the changing of MTU is not allowed, so this patch adds checking reset status in hns3_nic_change_mtu() to do that. Signed-off-by: Huazhong Tan Signed-off-by: Peng Li --- drivers/net/ethernet/hisilicon/hns3/hns3_enet.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c b/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c index 476c23d..0e31f74 100644 --- a/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c +++ b/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c @@ -1591,6 +1591,9 @@ static int hns3_nic_change_mtu(struct net_device *netdev, int new_mtu) struct hnae3_handle *h = hns3_get_handle(netdev); int ret; + if (hns3_nic_resetting(netdev)) + return -EBUSY; + if (!h->ae_algo->ops->set_mtu) return -EOPNOTSUPP;