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 27FEBA04B5 for ; Tue, 3 Dec 2019 11:17:33 +0100 (CET) Received: from [92.243.14.124] (localhost [127.0.0.1]) by dpdk.org (Postfix) with ESMTP id EEBA61BE3D; Tue, 3 Dec 2019 11:17:32 +0100 (CET) Received: from mga18.intel.com (mga18.intel.com [134.134.136.126]) by dpdk.org (Postfix) with ESMTP id 547EA58C4; Tue, 3 Dec 2019 11:17:29 +0100 (CET) X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga006.fm.intel.com ([10.253.24.20]) by orsmga106.jf.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 03 Dec 2019 02:17:28 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.69,272,1571727600"; d="scan'208";a="412132469" Received: from fyigit-mobl.ger.corp.intel.com (HELO [10.237.221.96]) ([10.237.221.96]) by fmsmga006.fm.intel.com with ESMTP; 03 Dec 2019 02:17:26 -0800 To: Chas Williams , Declan Doherty Cc: Andrew Rybchenko , dev@dpdk.org, stable@dpdk.org References: <1574154221-8628-1-git-send-email-arybchenko@solarflare.com> <873a52fd-7108-5428-1ce1-1bb82c023bb0@intel.com> <79c1f419-524c-a4d2-c97f-39789afe4d8a@solarflare.com> From: Ferruh Yigit Autocrypt: addr=ferruh.yigit@intel.com; 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charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit Subject: Re: [dpdk-stable] [PATCH] net/bonding: do not inherit slave device configuration 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 11/19/2019 12:40 PM, Andrew Rybchenko wrote: > On 11/19/19 3:18 PM, Ferruh Yigit wrote: >> On 11/19/2019 9:03 AM, Andrew Rybchenko wrote: >>> Bonding device should control bonded devices configuration. >>> >>> Also avoid usage of slave's data->dev_conf. >>> >>> Fixes: 2efb58cbab6e ("bond: new link bonding library") >>> Cc: stable@dpdk.org >>> >>> Signed-off-by: Andrew Rybchenko >>> --- >>> drivers/net/bonding/rte_eth_bond_pmd.c | 24 ++++++++++++------------ >>> 1 file changed, 12 insertions(+), 12 deletions(-) >>> >>> diff --git a/drivers/net/bonding/rte_eth_bond_pmd.c b/drivers/net/bonding/rte_eth_bond_pmd.c >>> index 707a0f3cdd..4f0e83205d 100644 >>> --- a/drivers/net/bonding/rte_eth_bond_pmd.c >>> +++ b/drivers/net/bonding/rte_eth_bond_pmd.c >>> @@ -1679,6 +1679,7 @@ int >>> slave_configure(struct rte_eth_dev *bonded_eth_dev, >>> struct rte_eth_dev *slave_eth_dev) >>> { >>> + struct rte_eth_conf dev_conf; >>> struct bond_rx_queue *bd_rx_q; >>> struct bond_tx_queue *bd_tx_q; >>> uint16_t nb_rx_queues; >>> @@ -1693,34 +1694,34 @@ slave_configure(struct rte_eth_dev *bonded_eth_dev, >>> /* Stop slave */ >>> rte_eth_dev_stop(slave_eth_dev->data->port_id); >>> >>> + memset(&dev_conf, 0, sizeof(dev_conf)); >>> + >>> /* Enable interrupts on slave device if supported */ >>> if (slave_eth_dev->data->dev_flags & RTE_ETH_DEV_INTR_LSC) >>> - slave_eth_dev->data->dev_conf.intr_conf.lsc = 1; >>> + dev_conf.intr_conf.lsc = 1; >> I assume the original intention is making incremental changes to the existing >> slave configuration, if so we should copy the 'slave_eth_dev->data->dev_conf' to >> 'dev_conf' before start updating it. > > The problem is that I don't understand how incremental changes > happen. It simply looks wrong or I don't understand something. > It looks like it is the only place in bonding where slave configuration > is done. > Hi Chas, Declan, Can you please check the patch, and if possible comment on the initial intention of the code? Thanks, ferruh