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 3A758A053A; Thu, 23 Jan 2020 18:25:57 +0100 (CET) Received: from [92.243.14.124] (localhost [127.0.0.1]) by dpdk.org (Postfix) with ESMTP id 3BA312956; Thu, 23 Jan 2020 18:25:56 +0100 (CET) Received: from mga02.intel.com (mga02.intel.com [134.134.136.20]) by dpdk.org (Postfix) with ESMTP id 0CCCDF04; Thu, 23 Jan 2020 18:25:53 +0100 (CET) X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga008.fm.intel.com ([10.253.24.58]) by orsmga101.jf.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 23 Jan 2020 09:25:52 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.70,354,1574150400"; d="scan'208";a="222400491" Received: from fyigit-mobl.ger.corp.intel.com (HELO [10.237.221.35]) ([10.237.221.35]) by fmsmga008.fm.intel.com with ESMTP; 23 Jan 2020 09:25:50 -0800 To: "Iremonger, Bernard" , "Lu, Wenzhuo" , "Wu, Jingjing" , Matan Azrad Cc: "dev@dpdk.org" , "stable@dpdk.org" References: <20200123151509.3207419-1-ferruh.yigit@intel.com> From: Ferruh Yigit Autocrypt: addr=ferruh.yigit@intel.com; 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charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 8bit Subject: Re: [dpdk-dev] [PATCH] app/testpmd: fix hotplug 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 1/23/2020 5:01 PM, Iremonger, Bernard wrote: > Hi Ferruh, > >> -----Original Message----- >> From: Yigit, Ferruh >> Sent: Thursday, January 23, 2020 3:15 PM >> To: Lu, Wenzhuo ; Wu, Jingjing >> ; Iremonger, Bernard >> ; Matan Azrad >> Cc: dev@dpdk.org; stable@dpdk.org >> Subject: [PATCH] app/testpmd: fix hotplug >> > This is reverting the original patch, which breaks hotplug. > I think the commit message should make this clear. > This patch is not fixing hotplug, the original patch seems to have revealed a problem with hotplug. > Reverting this patch will not fix the underlying hotplug issue. What is the problem revealed by the original patch? Did you able to reproduce it? > >> The 'port_id_is_invalid()' check in the 'detach_port_device()' is breaking the >> hotplug support, since at that stage port will be closed and validity check >> always fail [1] and removing the device is not really completed. >> >> But this cause the vfio request interrupt keep triggered continuously and >> makes the application unusable, since port is closed but device is not >> removed, the remove path keep generating error log: >> >> 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! >> >> Fixed by removing 'port_id_is_invalid()' check from 'detach_port_device()', >> anyway it shouldn't be required. Without this check device remove works as >> expected. >> >> Only "Invalid port_id=0" logs seen a few times, which is because the actual >> removal not done synchronously but an alarm set for it, until the alarm fired >> application may receive many interrupts, expect the first ones cause the >> error. >> So this patch also removes the logging from checking the invalid port in >> 'rmv_port_callback()' to reduce the noise. >> >> [1] >> rmv_port_callback() >> stop_port(port_id); >> close_port(port_id); >> detach_port_device(port_id); >> >> Fixes: 43d0e304980a ("app/testpmd: fix invalid port detaching") >> Cc: stable@dpdk.org >> >> Signed-off-by: Ferruh Yigit >> --- >> app/test-pmd/testpmd.c | 6 ++---- >> 1 file changed, 2 insertions(+), 4 deletions(-) >> >> diff --git a/app/test-pmd/testpmd.c b/app/test-pmd/testpmd.c index >> f9f4cd1d3..3323013bb 100644 >> --- a/app/test-pmd/testpmd.c >> +++ b/app/test-pmd/testpmd.c >> @@ -2641,9 +2641,6 @@ detach_port_device(portid_t port_id) >> >> 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"); >> @@ -2875,7 +2872,8 @@ rmv_port_callback(void *arg) >> int org_no_link_check = no_link_check; >> portid_t port_id = (intptr_t)arg; >> >> -RTE_ETH_VALID_PORTID_OR_RET(port_id); >> +if (!rte_eth_dev_is_valid_port(port_id)) >> +return; >> >> if (!test_done && port_is_forwarding(port_id)) { >> need_to_start = 1; >> -- >> 2.24.1 > > Otherwise > Acked-by: Bernard Iremonger >