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 A4979A0539; Thu, 23 Jan 2020 14:19:41 +0100 (CET) Received: from [92.243.14.124] (localhost [127.0.0.1]) by dpdk.org (Postfix) with ESMTP id 9F3FA2BAE; Thu, 23 Jan 2020 14:19:40 +0100 (CET) Received: from mga01.intel.com (mga01.intel.com [192.55.52.88]) by dpdk.org (Postfix) with ESMTP id AE4C52B98; Thu, 23 Jan 2020 14:19:38 +0100 (CET) X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga008.jf.intel.com ([10.7.209.65]) by fmsmga101.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 23 Jan 2020 05:19:37 -0800 X-IronPort-AV: E=Sophos;i="5.70,354,1574150400"; d="scan'208";a="220663011" Received: from fyigit-mobl.ger.corp.intel.com (HELO [10.237.221.35]) ([10.237.221.35]) by orsmga008-auth.jf.intel.com with ESMTP/TLS/DHE-RSA-AES256-SHA; 23 Jan 2020 05:19:34 -0800 To: Matan Azrad , dev@dpdk.org, Bernard Iremonger Cc: Gaetan Rivet , thomas@monjalon.net, stable@dpdk.org, David Marchand , Jeff Guo , Qi Zhang References: <1573548459-6931-1-git-send-email-matan@mellanox.com> <1573548459-6931-2-git-send-email-matan@mellanox.com> From: "Yigit, Ferruh" Autocrypt: addr=ferruh.yigit@linux.intel.com; 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charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 8bit Subject: Re: [dpdk-dev] [PATCH 2/2] app/testpmd: fix invalid port detaching 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" On 11/12/2019 8:47 AM, Matan Azrad wrote: > The port was not validated before detaching. > > Ignore port detach operation when the port is not valid. > > Fixes: f8e5baa2662d ("app/testpmd: check not detaching device twice") > Cc: thomas@monjalon.net > Cc: stable@dpdk.org > > Signed-off-by: Matan Azrad > --- > app/test-pmd/testpmd.c | 3 +++ > 1 file changed, 3 insertions(+) > > diff --git a/app/test-pmd/testpmd.c b/app/test-pmd/testpmd.c > index 4444346..370eefe 100644 > --- a/app/test-pmd/testpmd.c > +++ b/app/test-pmd/testpmd.c > @@ -2545,6 +2545,9 @@ struct extmem_param { > > printf("Removing a device...\n"); > > + if (port_id_is_invalid(port_id, ENABLED_WARN)) > + return; > + > dev = rte_eth_devices[port_id].device; > if (dev == NULL) { > printf("Device already removed\n"); > The patch is already in 19.11 [1] but it is breaking the testpmd hotplug support. Before 'detach_port_device()' called, the port has been stopped and closed [2], which will make port fail from 'port_id_is_invalid()' check and the device removal path never fully called. The implication is, since device not detached, vfio request interrupt keeps triggered continuously and re-starts the detach path, but because of the half cleaned device it fails and app gets stuck with a continuous log [3]. I wonder if the actual hotplug has been tested with this patch, the commit log is not clear about the motivation and implication of the patch, I am not clear why this check is added but I am sending a patch soon to remove it back. Regards, ferruh [1] https://git.dpdk.org/dpdk/commit/?id=43d0e304980a1527bcac92dc679057b189e2545a [2] rmv_port_callback stop_port(port_id); close_port(port_id); detach_port_device(port_id); [3] EAL: can not get port by device 0000:00:05.0! EAL: can not get port by device 0000:00:05.0! EAL: can not get port by device 0000:00:05.0! EAL: can not get port by device 0000:00:05.0! EAL: can not get port by device 0000:00:05.0! EAL: can not get port by device 0000:00:05.0! ...