From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mga07.intel.com (mga07.intel.com [134.134.136.100]) by dpdk.org (Postfix) with ESMTP id AB8DD590F; Thu, 6 Oct 2016 16:39:29 +0200 (CEST) Received: from orsmga003.jf.intel.com ([10.7.209.27]) by orsmga105.jf.intel.com with ESMTP; 06 Oct 2016 07:39:28 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.31,454,1473145200"; d="scan'208";a="887363974" Received: from dwdohert-dpdk.ir.intel.com ([163.33.210.152]) by orsmga003.jf.intel.com with ESMTP; 06 Oct 2016 07:39:26 -0700 To: Ilya Maximets , dev@dpdk.org References: <1473251290-22053-1-git-send-email-i.maximets@samsung.com> Cc: Heetae Ahn , Yuanhan Liu , Eric Kinzie , Bernard Iremonger , stable@dpdk.org From: Declan Doherty Message-ID: Date: Thu, 6 Oct 2016 15:32:36 +0100 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:45.0) Gecko/20100101 Thunderbird/45.1.1 MIME-Version: 1.0 In-Reply-To: <1473251290-22053-1-git-send-email-i.maximets@samsung.com> Content-Type: text/plain; charset=windows-1252; format=flowed Content-Transfer-Encoding: 7bit Subject: Re: [dpdk-stable] [PATCH] Revert "bonding: use existing enslaved device queues" X-BeenThere: stable@dpdk.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: patches for stable branches List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 06 Oct 2016 14:39:30 -0000 On 07/09/16 13:28, Ilya Maximets wrote: > This reverts commit 5b7bb2bda5519b7800f814df64d4e015282140e5. > > It is necessary to reconfigure all queues every time because configuration > can be changed. > Hey Ilya, this makes sense. I guess this was my original intention but I missed this case in my review of the change. > For example, if we're reconfiguring bonding device with new memory pool, > already configured queues will still use the old one. And if the old > mempool be freed, application likely will panic in attempt to use > freed mempool. > > This happens when we use the bonding device with OVS 2.6 while MTU > reconfiguration: > > PANIC in rte_mempool_get_ops(): > assert "(ops_index >= 0) && (ops_index < RTE_MEMPOOL_MAX_OPS_IDX)" failed > > Cc: > Signed-off-by: Ilya Maximets > --- > drivers/net/bonding/rte_eth_bond_pmd.c | 10 ++-------- > 1 file changed, 2 insertions(+), 8 deletions(-) > > diff --git a/drivers/net/bonding/rte_eth_bond_pmd.c b/drivers/net/bonding/rte_eth_bond_pmd.c > index b20a272..eb5b6d1 100644 > --- a/drivers/net/bonding/rte_eth_bond_pmd.c > +++ b/drivers/net/bonding/rte_eth_bond_pmd.c > @@ -1305,8 +1305,6 @@ slave_configure(struct rte_eth_dev *bonded_eth_dev, > struct bond_rx_queue *bd_rx_q; > struct bond_tx_queue *bd_tx_q; > > - uint16_t old_nb_tx_queues = slave_eth_dev->data->nb_tx_queues; > - uint16_t old_nb_rx_queues = slave_eth_dev->data->nb_rx_queues; > int errval; > uint16_t q_id; > > @@ -1347,9 +1345,7 @@ slave_configure(struct rte_eth_dev *bonded_eth_dev, > } > > /* Setup Rx Queues */ > - /* Use existing queues, if any */ > - for (q_id = old_nb_rx_queues; > - q_id < bonded_eth_dev->data->nb_rx_queues; q_id++) { > + for (q_id = 0; q_id < bonded_eth_dev->data->nb_rx_queues; q_id++) { > bd_rx_q = (struct bond_rx_queue *)bonded_eth_dev->data->rx_queues[q_id]; > > errval = rte_eth_rx_queue_setup(slave_eth_dev->data->port_id, q_id, > @@ -1365,9 +1361,7 @@ slave_configure(struct rte_eth_dev *bonded_eth_dev, > } > > /* Setup Tx Queues */ > - /* Use existing queues, if any */ > - for (q_id = old_nb_tx_queues; > - q_id < bonded_eth_dev->data->nb_tx_queues; q_id++) { > + for (q_id = 0; q_id < bonded_eth_dev->data->nb_tx_queues; q_id++) { > bd_tx_q = (struct bond_tx_queue *)bonded_eth_dev->data->tx_queues[q_id]; > > errval = rte_eth_tx_queue_setup(slave_eth_dev->data->port_id, q_id, > Acked-by: Declan Doherty