From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: <dev-bounces@dpdk.org> Received: from dpdk.org (dpdk.org [92.243.14.124]) by dpdk.space (Postfix) with ESMTP id 166C8A0679 for <public@inbox.dpdk.org>; Tue, 30 Apr 2019 10:10:25 +0200 (CEST) Received: from [92.243.14.124] (localhost [127.0.0.1]) by dpdk.org (Postfix) with ESMTP id D95764F9C; Tue, 30 Apr 2019 10:10:23 +0200 (CEST) Received: from mga01.intel.com (mga01.intel.com [192.55.52.88]) by dpdk.org (Postfix) with ESMTP id 787CC4F9A for <dev@dpdk.org>; Tue, 30 Apr 2019 10:10:22 +0200 (CEST) X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga004.jf.intel.com ([10.7.209.38]) by fmsmga101.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 30 Apr 2019 01:10:21 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.60,413,1549958400"; d="scan'208";a="295719623" Received: from fyigit-mobl.ger.corp.intel.com (HELO [10.237.221.33]) ([10.237.221.33]) by orsmga004.jf.intel.com with ESMTP; 30 Apr 2019 01:10:20 -0700 To: Thomas Monjalon <thomas@monjalon.net> Cc: Xiaolong Ye <xiaolong.ye@intel.com>, dev@dpdk.org References: <20190426050912.109813-1-xiaolong.ye@intel.com> <8348310.0Lx1uY5diY@xps> <aac8c509-c63a-9b02-d804-46b8e75365fb@intel.com> <1886342.GR0dOcdeod@xps> From: Ferruh Yigit <ferruh.yigit@intel.com> Openpgp: preference=signencrypt Autocrypt: addr=ferruh.yigit@intel.com; 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WOW64; rv:60.0) Gecko/20100101 Thunderbird/60.6.1 MIME-Version: 1.0 In-Reply-To: <1886342.GR0dOcdeod@xps> Content-Type: text/plain; charset="UTF-8" Content-Language: en-US Content-Transfer-Encoding: 7bit Subject: Re: [dpdk-dev] [PATCH v1 1/2] net/af_xdp: remove resources when port is closed X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: DPDK patches and discussions <dev.dpdk.org> List-Unsubscribe: <https://mails.dpdk.org/options/dev>, <mailto:dev-request@dpdk.org?subject=unsubscribe> List-Archive: <http://mails.dpdk.org/archives/dev/> List-Post: <mailto:dev@dpdk.org> List-Help: <mailto:dev-request@dpdk.org?subject=help> List-Subscribe: <https://mails.dpdk.org/listinfo/dev>, <mailto:dev-request@dpdk.org?subject=subscribe> Errors-To: dev-bounces@dpdk.org Sender: "dev" <dev-bounces@dpdk.org> Message-ID: <20190430081019.hLb9vcZ0IUsFFNj8bdRq4ty4G_BDX8B0qNeljTuq0Xs@z> On 4/30/2019 8:55 AM, Thomas Monjalon wrote: > 30/04/2019 09:33, Ferruh Yigit: >> On 4/29/2019 11:34 PM, Thomas Monjalon wrote: >>> 30/04/2019 00:28, Ferruh Yigit: >>>> On 4/29/2019 9:14 PM, Thomas Monjalon wrote: >>>>> 29/04/2019 19:00, Ferruh Yigit: >>>>>> On 4/26/2019 6:09 AM, Xiaolong Ye wrote: >>>>>>> Since 18.11, it is suggested that driver should release all its private >>>>>>> resources at the dev_close routine. So all resources previously released >>>>>>> in remove routine are now released at the dev_close routine, and the >>>>>>> dev_close routine will be called in driver remove routine in order to >>>>>>> support removing a device without closing its ports. >>>>>>> >>>>>>> Above behavior changes are supported by setting RTE_ETH_DEV_CLOSE_REMOVE >>>>>>> flag during probe stage. >>>>>>> >>>>>>> Signed-off-by: Xiaolong Ye <xiaolong.ye@intel.com> >>>>>> >>>>>> <...> >>>>>> >>>>>>> @@ -936,14 +940,7 @@ rte_pmd_af_xdp_remove(struct rte_vdev_device *dev) >>>>>>> if (eth_dev == NULL) >>>>>>> return -1; >>>>>>> >>>>>>> - internals = eth_dev->data->dev_private; >>>>>>> - >>>>>>> - rte_ring_free(internals->umem->buf_ring); >>>>>>> - rte_memzone_free(internals->umem->mz); >>>>>>> - rte_free(internals->umem); >>>>>>> - >>>>>>> - rte_eth_dev_release_port(eth_dev); >>>>>> >>>>>> I thinks we should keep 'rte_eth_dev_release_port()' in '.remove()' path, >>>>>> the 'RTE_ETH_DEV_CLOSE_REMOVE' flag will take care of this in >>>>>> 'rte_eth_dev_close()' but still needed in '.remove()' path. >>>>> >>>>> I don't understand your comment. >>>>> Calling the close function looks the right thing to do in "remove". >>>> >>>> No concern on calling the 'close'. >>>> My comment was to keep 'rte_eth_dev_release_port()' which this patch removes. >>> >>> rte_eth_dev_release_port() is called in eth_dev_close(), isn't it? >> >> No, 'eth_dev_close()' is local 'dev_close()' ops, the one to clear driver >> private resources. >> I assume it is confused with 'rte_eth_dev_close()' ... >> >>>>>>> - >>>>>>> + eth_dev_close(eth_dev); > > Ah yes, I overlooked it. > Why not calling rte_eth_dev_close()? > It may work, but I am for keeping 'dev_close()' and 'rte_eth_dev_release_port()' as two steps in '.remove()', I think there is no need to include 'rte_eth_dev_close()' API here and its possible/future side affects etc...