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 1C996A051A; Fri, 17 Jan 2020 07:24:04 +0100 (CET) Received: from [92.243.14.124] (localhost [127.0.0.1]) by dpdk.org (Postfix) with ESMTP id 1A9961D420; Fri, 17 Jan 2020 07:24:03 +0100 (CET) Received: from incedge.chinasoftinc.com (unknown [114.113.233.8]) by dpdk.org (Postfix) with ESMTP id BB2771D41B for ; Fri, 17 Jan 2020 07:24:01 +0100 (CET) X-ASG-Debug-ID: 1579242234-0a3dd17c8956d70001-TfluYd Received: from mail.chinasoftinc.com (inccas002.ito.icss [10.168.0.52]) by incedge.chinasoftinc.com with ESMTP id TixAJjtfRToe0JV8 (version=TLSv1 cipher=ECDHE-RSA-AES256-SHA bits=256 verify=NO); Fri, 17 Jan 2020 14:23:54 +0800 (CST) X-Barracuda-Envelope-From: huwei013@chinasoftinc.com X-Barracuda-RBL-Trusted-Forwarder: 10.168.0.52 X-ASG-Whitelist: Client Received: from localhost.localdomain (114.119.4.74) by INCCAS002.ito.icss (10.168.0.60) with Microsoft SMTP Server id 14.3.439.0; Fri, 17 Jan 2020 14:23:54 +0800 From: "Wei Hu (Xavier)" X-Barracuda-RBL-Trusted-Forwarder: 10.168.0.60 To: CC: , , , Date: Fri, 17 Jan 2020 14:23:42 +0800 X-ASG-Orig-Subj: [PATCH v2] ethdev: fix updating device data when ops pointer is NULL Message-ID: <20200117062342.32870-1-huwei013@chinasoftinc.com> X-Mailer: git-send-email 2.23.0 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain X-Originating-IP: [114.119.4.74] X-Barracuda-Connect: inccas002.ito.icss[10.168.0.52] X-Barracuda-Start-Time: 1579242234 X-Barracuda-Encrypted: ECDHE-RSA-AES256-SHA X-Barracuda-URL: https://spam.chinasoftinc.com:443/cgi-mod/mark.cgi X-Virus-Scanned: by bsmtpd at chinasoftinc.com X-Barracuda-Scan-Msg-Size: 4536 Subject: [dpdk-dev] [PATCH v2] ethdev: fix updating device data when ops pointer is NULL X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org Sender: "dev" From: "Wei Hu (Xavier)" Currently, there is a potential problem that changing the content of dev->data->dev_conf.rxmode.offloads even when the pointer named dev->dev_ops->vlan_offload_set is NULL in the API function named rte_eth_dev_set_vlan_offload. It is a good idea that prevent the side effect and make the API return success if no change requested. This patch fixes the problem, the detail information as below: - Update a local 'dev_offloads' variable, instead of directly updating the device config data - if no change requested, "mask == 0", return success - if change requested, check the 'vlan_offload_set' dev_ops in this stage - assign the local 'dev_offloads' to 'dev->data->dev_conf.rxmode.offloads' and call the dev_ops - On error recover the 'dev->data->dev_conf.rxmode.offloads' to 'orig_offloads' Fixes: 01eb53eefeb4 ("ethdev: rename folder to library name") Cc: stable@dpdk.org Signed-off-by: Wei Hu (Xavier) Signed-off-by: Chunsong Feng Signed-off-by: Min Wang (Jushui) Signed-off-by: Min Hu (Connor) --- v1 -> v2: 1. Update the modification according to Ferruh Yigit's comment. The related link as below: http://patches.dpdk.org/patch/64779/ 2. Update the commit log and title of the patch. --- lib/librte_ethdev/rte_ethdev.c | 31 ++++++++++++++++--------------- 1 file changed, 16 insertions(+), 15 deletions(-) diff --git a/lib/librte_ethdev/rte_ethdev.c b/lib/librte_ethdev/rte_ethdev.c index aec2d0f70..9232503f7 100644 --- a/lib/librte_ethdev/rte_ethdev.c +++ b/lib/librte_ethdev/rte_ethdev.c @@ -3253,53 +3253,53 @@ rte_eth_dev_set_vlan_offload(uint16_t port_id, int offload_mask) int mask = 0; int cur, org = 0; uint64_t orig_offloads; - uint64_t *dev_offloads; + uint64_t dev_offloads; RTE_ETH_VALID_PORTID_OR_ERR_RET(port_id, -ENODEV); dev = &rte_eth_devices[port_id]; /* save original values in case of failure */ orig_offloads = dev->data->dev_conf.rxmode.offloads; - dev_offloads = &dev->data->dev_conf.rxmode.offloads; + dev_offloads = orig_offloads; /*check which option changed by application*/ cur = !!(offload_mask & ETH_VLAN_STRIP_OFFLOAD); - org = !!(*dev_offloads & DEV_RX_OFFLOAD_VLAN_STRIP); + org = !!(dev_offloads & DEV_RX_OFFLOAD_VLAN_STRIP); if (cur != org) { if (cur) - *dev_offloads |= DEV_RX_OFFLOAD_VLAN_STRIP; + dev_offloads |= DEV_RX_OFFLOAD_VLAN_STRIP; else - *dev_offloads &= ~DEV_RX_OFFLOAD_VLAN_STRIP; + dev_offloads &= ~DEV_RX_OFFLOAD_VLAN_STRIP; mask |= ETH_VLAN_STRIP_MASK; } cur = !!(offload_mask & ETH_VLAN_FILTER_OFFLOAD); - org = !!(*dev_offloads & DEV_RX_OFFLOAD_VLAN_FILTER); + org = !!(dev_offloads & DEV_RX_OFFLOAD_VLAN_FILTER); if (cur != org) { if (cur) - *dev_offloads |= DEV_RX_OFFLOAD_VLAN_FILTER; + dev_offloads |= DEV_RX_OFFLOAD_VLAN_FILTER; else - *dev_offloads &= ~DEV_RX_OFFLOAD_VLAN_FILTER; + dev_offloads &= ~DEV_RX_OFFLOAD_VLAN_FILTER; mask |= ETH_VLAN_FILTER_MASK; } cur = !!(offload_mask & ETH_VLAN_EXTEND_OFFLOAD); - org = !!(*dev_offloads & DEV_RX_OFFLOAD_VLAN_EXTEND); + org = !!(dev_offloads & DEV_RX_OFFLOAD_VLAN_EXTEND); if (cur != org) { if (cur) - *dev_offloads |= DEV_RX_OFFLOAD_VLAN_EXTEND; + dev_offloads |= DEV_RX_OFFLOAD_VLAN_EXTEND; else - *dev_offloads &= ~DEV_RX_OFFLOAD_VLAN_EXTEND; + dev_offloads &= ~DEV_RX_OFFLOAD_VLAN_EXTEND; mask |= ETH_VLAN_EXTEND_MASK; } cur = !!(offload_mask & ETH_QINQ_STRIP_OFFLOAD); - org = !!(*dev_offloads & DEV_RX_OFFLOAD_QINQ_STRIP); + org = !!(dev_offloads & DEV_RX_OFFLOAD_QINQ_STRIP); if (cur != org) { if (cur) - *dev_offloads |= DEV_RX_OFFLOAD_QINQ_STRIP; + dev_offloads |= DEV_RX_OFFLOAD_QINQ_STRIP; else - *dev_offloads &= ~DEV_RX_OFFLOAD_QINQ_STRIP; + dev_offloads &= ~DEV_RX_OFFLOAD_QINQ_STRIP; mask |= ETH_QINQ_STRIP_MASK; } @@ -3308,10 +3308,11 @@ rte_eth_dev_set_vlan_offload(uint16_t port_id, int offload_mask) return ret; RTE_FUNC_PTR_OR_ERR_RET(*dev->dev_ops->vlan_offload_set, -ENOTSUP); + dev->data->dev_conf.rxmode.offloads = dev_offloads; ret = (*dev->dev_ops->vlan_offload_set)(dev, mask); if (ret) { /* hit an error restore original values */ - *dev_offloads = orig_offloads; + dev->data->dev_conf.rxmode.offloads = orig_offloads; } return eth_err(port_id, ret); -- 2.23.0