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 BA8ECA0500 for ; Tue, 14 Jan 2020 15:45:41 +0100 (CET) Received: from [92.243.14.124] (localhost [127.0.0.1]) by dpdk.org (Postfix) with ESMTP id 989421C130; Tue, 14 Jan 2020 15:45:41 +0100 (CET) Received: from mga18.intel.com (mga18.intel.com [134.134.136.126]) by dpdk.org (Postfix) with ESMTP id A09AF1BFF5; Tue, 14 Jan 2020 15:45:37 +0100 (CET) X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga001.fm.intel.com ([10.253.24.23]) by orsmga106.jf.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 14 Jan 2020 06:45:36 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.69,433,1571727600"; d="scan'208";a="248791956" Received: from fyigit-mobl.ger.corp.intel.com (HELO [10.237.221.35]) ([10.237.221.35]) by fmsmga001.fm.intel.com with ESMTP; 14 Jan 2020 06:45:34 -0800 To: Fang TongHao , thomas@monjalon.net, arybchenko@solarflare.com Cc: dev@dpdk.org, stable@dpdk.org, jia.guo@intel.com, cunming.liang@intel.com, qi.z.zhang@intel.com, jungle845943968@outlook.com References: <20200109122710.1362-1-fangtonghao@sangfor.com.cn> <20200113050312.1506-1-fangtonghao@sangfor.com.cn> From: Ferruh Yigit Autocrypt: addr=ferruh.yigit@intel.com; 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charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 8bit Subject: Re: [dpdk-stable] [dpdk-dev] [PATCH v2] Fixes: ethdev: secondary process change shared memory 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" On 1/13/2020 5:03 AM, Fang TongHao wrote: > Secondary process calls “rte_eth_dev_pci_allocate” > function and enters rte_eth_copy_pci_info function > when initializing.Then it sets the value of struct > "rte_eth_dev_data.dev_flags" to zero and reset it, > but this struct is shared by primary process and > secondary process.To fix this bug,by adding an > if-statement to forbid the secondaryprocess changing > the above-mentioned value. Hi Fang, Thanks for the fix, I agree with the problem statement, but not sure if this should be handled in the helper function or in the place where the function is called. Helper function is simple on what it does, do we need to put the primary process logic in it. Can you please give more details of the bug you have encounter, is it seen by a specific PMD? Thanks, ferruh > > Signed-off-by: Fang TongHao > --- > lib/librte_ethdev/rte_ethdev_pci.h | 18 ++++++++++-------- > 1 file changed, 10 insertions(+), 8 deletions(-) > > diff --git a/lib/librte_ethdev/rte_ethdev_pci.h b/lib/librte_ethdev/rte_ethdev_pci.h > index ccdbb46ec..e7dae0545 100644 > --- a/lib/librte_ethdev/rte_ethdev_pci.h > +++ b/lib/librte_ethdev/rte_ethdev_pci.h > @@ -60,14 +60,16 @@ rte_eth_copy_pci_info(struct rte_eth_dev *eth_dev, > > eth_dev->intr_handle = &pci_dev->intr_handle; > > - eth_dev->data->dev_flags = 0; > - if (pci_dev->driver->drv_flags & RTE_PCI_DRV_INTR_LSC) > - eth_dev->data->dev_flags |= RTE_ETH_DEV_INTR_LSC; > - if (pci_dev->driver->drv_flags & RTE_PCI_DRV_INTR_RMV) > - eth_dev->data->dev_flags |= RTE_ETH_DEV_INTR_RMV; > - > - eth_dev->data->kdrv = pci_dev->kdrv; > - eth_dev->data->numa_node = pci_dev->device.numa_node; > + if (rte_eal_process_type() == RTE_PROC_PRIMARY) { > + eth_dev->data->dev_flags = 0; > + if (pci_dev->driver->drv_flags & RTE_PCI_DRV_INTR_LSC) > + eth_dev->data->dev_flags |= RTE_ETH_DEV_INTR_LSC; > + if (pci_dev->driver->drv_flags & RTE_PCI_DRV_INTR_RMV) > + eth_dev->data->dev_flags |= RTE_ETH_DEV_INTR_RMV; > + > + eth_dev->data->kdrv = pci_dev->kdrv; > + eth_dev->data->numa_node = pci_dev->device.numa_node; > + } > } > > static inline int >