From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mga01.intel.com (mga01.intel.com [192.55.52.88]) by dpdk.org (Postfix) with ESMTP id 9FA862B84 for ; Thu, 21 Apr 2016 17:04:47 +0200 (CEST) Received: from orsmga002.jf.intel.com ([10.7.209.21]) by fmsmga101.fm.intel.com with ESMTP; 21 Apr 2016 08:03:32 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.24,513,1455004800"; d="scan'208";a="959871717" Received: from btopel-mobl1.ger.corp.intel.com (HELO btopel-mobl1.isw.intel.com) ([10.103.209.141]) by orsmga002.jf.intel.com with ESMTP; 21 Apr 2016 08:03:30 -0700 From: =?UTF-8?q?Bj=C3=B6rn=20T=C3=B6pel?= To: dev@dpdk.org Cc: david.marchand@6wind.com, helin.zhang@intel.com, jingjing.wu@intel.com, =?UTF-8?q?Bj=C3=B6rn=20T=C3=B6pel?= Date: Thu, 21 Apr 2016 17:02:55 +0200 Message-Id: <1461250975-14437-1-git-send-email-bjorn.topel@intel.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1460645904-19565-1-git-send-email-bjorn.topel@intel.com> References: <1460645904-19565-1-git-send-email-bjorn.topel@intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Subject: [dpdk-dev] [PATCH v2] i40evf: Report error if HW CRC strip is disabled for Linux PF hosts X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: patches and discussions about DPDK List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 21 Apr 2016 15:04:48 -0000 On Linux PF hosts, the VF has no means of changing the HW CRC strip setting for a RX queue. It's implicitly enabled. This patch checks if the host is running a Linux PF kernel driver, and returns an error, if HW CRC stripping was disabled. Signed-off-by: Björn Töpel --- drivers/net/i40e/i40e_ethdev_vf.c | 15 +++++++++++++++ 1 file changed, 15 insertions(+) diff --git a/drivers/net/i40e/i40e_ethdev_vf.c b/drivers/net/i40e/i40e_ethdev_vf.c index 2bce69b..0057ed6 100644 --- a/drivers/net/i40e/i40e_ethdev_vf.c +++ b/drivers/net/i40e/i40e_ethdev_vf.c @@ -1567,6 +1567,8 @@ i40evf_dev_configure(struct rte_eth_dev *dev) { struct i40e_adapter *ad = I40E_DEV_PRIVATE_TO_ADAPTER(dev->data->dev_private); + struct rte_eth_conf *conf = &dev->data->dev_conf; + struct i40e_vf *vf; /* Initialize to TRUE. If any of Rx queues doesn't meet the bulk * allocation or vector Rx preconditions we will reset it. @@ -1576,6 +1578,19 @@ i40evf_dev_configure(struct rte_eth_dev *dev) ad->tx_simple_allowed = true; ad->tx_vec_allowed = true; + /* For Linux PF hosts, VF has no ability to disable HW CRC strip, + * and is implicitly enabled by the PF. + */ + if (!conf->rxmode.hw_strip_crc) { + vf = I40EVF_DEV_PRIVATE_TO_VF(dev->data->dev_private); + if ((vf->version_major == I40E_VIRTCHNL_VERSION_MAJOR) && + (vf->version_minor <= I40E_VIRTCHNL_VERSION_MINOR)) { + /* Peer is Linux PF host. */ + PMD_INIT_LOG(ERR, "VF can't disable HW CRC Strip"); + return -EINVAL; + } + } + return i40evf_init_vlan(dev); } -- 2.7.4