From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from dpdk.org (dpdk.org [92.243.14.124]) by inbox.dpdk.org (Postfix) with ESMTP id 50972A034C for ; Tue, 18 Aug 2020 08:50:26 +0200 (CEST) Received: from [92.243.14.124] (localhost [127.0.0.1]) by dpdk.org (Postfix) with ESMTP id 45419AAB7; Tue, 18 Aug 2020 08:50:26 +0200 (CEST) Received: from mail.chinasoftinc.com (unknown [114.113.233.8]) by dpdk.org (Postfix) with ESMTP id BD4A91C032 for ; Tue, 18 Aug 2020 08:50:23 +0200 (CEST) Received: from localhost.localdomain (120.133.139.157) by INCCAS001.ito.icss (10.168.0.60) with Microsoft SMTP Server id 14.3.487.0; Tue, 18 Aug 2020 14:49:56 +0800 From: "Wei Hu (Xavier)" To: , CC: Date: Tue, 18 Aug 2020 14:49:25 +0800 Message-ID: <20200818064931.46414-5-huwei013@chinasoftinc.com> X-Mailer: git-send-email 2.27.0 In-Reply-To: <20200818064931.46414-1-huwei013@chinasoftinc.com> References: <20200817092532.59530-1-huwei013@chinasoftinc.com> <20200818064931.46414-1-huwei013@chinasoftinc.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain X-Originating-IP: [120.133.139.157] Subject: [dpdk-stable] [PATCH v2 04/10] net/hns3: remove restriction on setting VF MTU X-BeenThere: stable@dpdk.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: patches for DPDK stable branches List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: stable-bounces@dpdk.org Sender: "stable" From: Chengchang Tang [ upstream commit 4bf2c84bd88691bbb9cdc39a8bcf597537abfa80 ] The hns3 PF/VF devices on the same port share the hardware MTU configuration. Currently, we send mailbox to inform hns3 PF kernel ethdev driver to finish hardware MTU configuration in hns3 VF PMD driver, there is no need to stop the port for hns3 VF device, and the MTU value issued by hns3 VF PMD driver must be less than or equal to PF's MTU. Signed-off-by: Chengchang Tang Signed-off-by: Wei Hu (Xavier) --- drivers/net/hns3/hns3_ethdev_vf.c | 14 ++++++++------ 1 file changed, 8 insertions(+), 6 deletions(-) diff --git a/drivers/net/hns3/hns3_ethdev_vf.c b/drivers/net/hns3/hns3_ethdev_vf.c index 5e5da8685..63fca0197 100644 --- a/drivers/net/hns3/hns3_ethdev_vf.c +++ b/drivers/net/hns3/hns3_ethdev_vf.c @@ -606,12 +606,14 @@ hns3vf_dev_mtu_set(struct rte_eth_dev *dev, uint16_t mtu) uint32_t frame_size = mtu + HNS3_ETH_OVERHEAD; int ret; - if (dev->data->dev_started) { - hns3_err(hw, "Failed to set mtu, port %u must be stopped " - "before configuration", dev->data->port_id); - return -EBUSY; - } - + /* + * The hns3 PF/VF devices on the same port share the hardware MTU + * configuration. Currently, we send mailbox to inform hns3 PF kernel + * ethdev driver to finish hardware MTU configuration in hns3 VF PMD + * driver, there is no need to stop the port for hns3 VF device, and the + * MTU value issued by hns3 VF PMD driver must be less than or equal to + * PF's MTU. + */ if (rte_atomic16_read(&hw->reset.resetting)) { hns3_err(hw, "Failed to set mtu during resetting"); return -EIO; -- 2.27.0