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 269282B84; Wed, 12 Oct 2016 17:24:25 +0200 (CEST) Received: from fmsmga006.fm.intel.com ([10.253.24.20]) by orsmga105.jf.intel.com with ESMTP; 12 Oct 2016 08:24:25 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.31,482,1473145200"; d="scan'208";a="18835954" Received: from bricha3-mobl3.ger.corp.intel.com ([10.237.221.55]) by fmsmga006.fm.intel.com with SMTP; 12 Oct 2016 08:24:22 -0700 Received: by (sSMTP sendmail emulation); Wed, 12 Oct 2016 16:24:21 +0025 Date: Wed, 12 Oct 2016 16:24:21 +0100 From: Bruce Richardson To: Ilya Maximets Cc: Eric Kinzie , dev@dpdk.org, Declan Doherty , Heetae Ahn , Yuanhan Liu , Bernard Iremonger , stable@dpdk.org, Thomas Monjalon Message-ID: <20161012152421.GC104428@bricha3-MOBL3> References: <1473251290-22053-1-git-send-email-i.maximets@samsung.com> <20161007020225.GA22829@roosta.home> <1854c9f5-eedf-fc7b-a786-7526b80b6efa@samsung.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1854c9f5-eedf-fc7b-a786-7526b80b6efa@samsung.com> Organization: Intel Research and =?iso-8859-1?Q?De=ACvel?= =?iso-8859-1?Q?opment?= Ireland Ltd. User-Agent: Mutt/1.5.23 (2014-03-12) Subject: Re: [dpdk-stable] [dpdk-dev] [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: Wed, 12 Oct 2016 15:24:27 -0000 On Wed, Oct 12, 2016 at 04:24:54PM +0300, Ilya Maximets wrote: > On 07.10.2016 05:02, Eric Kinzie wrote: > > On Wed Sep 07 15:28:10 +0300 2016, Ilya Maximets wrote: > >> This reverts commit 5b7bb2bda5519b7800f814df64d4e015282140e5. > >> > >> It is necessary to reconfigure all queues every time because configuration > >> can be changed. > >> > >> 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, > >> -- > >> 2.7.4 > >> > > > > NAK > > > > There are still some users of this code. Let's give them a chance to > > comment before removing it. > > Hi Eric, > > Are these users in CC-list? If not, could you, please, add them? > This patch awaits in mail-list already more than a month. I think, it's enough > time period for all who wants to say something. Patch fixes a real bug that > prevent using of DPDK bonding in all applications that reconfigures devices > in runtime including OVS. > Agreed. Eric, does reverting this patch cause you problems directly, or is your concern just with regards to potential impact to others? Thanks, /Bruce