From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mga03.intel.com (mga03.intel.com [134.134.136.65]) by dpdk.org (Postfix) with ESMTP id A7C5B8E68; Tue, 10 Apr 2018 20:34:52 +0200 (CEST) X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga002.jf.intel.com ([10.7.209.21]) by orsmga103.jf.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 10 Apr 2018 11:34:51 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.48,433,1517904000"; d="scan'208";a="49686644" Received: from fyigit-mobl.ger.corp.intel.com (HELO [10.237.221.42]) ([10.237.221.42]) by orsmga002.jf.intel.com with ESMTP; 10 Apr 2018 11:34:49 -0700 To: Thomas Monjalon , Shahaf Shuler Cc: =?UTF-8?Q?N=c3=a9lio_Laranjeiro?= , dev@dpdk.org, stable@dpdk.org, stephen@networkplumber.org References: <20180410061631.50301-1-shahafs@mellanox.com> <20180410082051.vhumihdzc3qhy7wy@laranjeiro-vm.dev.6wind.com> <4616956.1DYh5m3MiB@xps> From: Ferruh Yigit Openpgp: preference=signencrypt Autocrypt: addr=ferruh.yigit@intel.com; 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WOW64; rv:52.0) Gecko/20100101 Thunderbird/52.7.0 MIME-Version: 1.0 In-Reply-To: <4616956.1DYh5m3MiB@xps> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 8bit Subject: Re: [dpdk-dev] [PATCH] ethdev: fix link status query 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: , X-List-Received-Date: Tue, 10 Apr 2018 18:34:53 -0000 On 4/10/2018 9:29 AM, Thomas Monjalon wrote: > 10/04/2018 10:20, Nélio Laranjeiro: >> On Tue, Apr 10, 2018 at 09:16:31AM +0300, Shahaf Shuler wrote: >>> When application works with LSC interrupts the ethdev layer skips >>> the PMD callback and update according to the link status exists on >>> device data. It is because it assumes the link status on the device data >>> is the correct one since any link change is processed by the application. >>> >>> As multiple PMDs install the link status interrupt handler only on port >>> start and uninstall it on port stop, the link status may be incorrect in >>> case the query is called after port stop or before port start. >> >> It seems also logical to not process interrupts from stopped device, >> for them accessing to the link status should always end by calling the >> devop function. >> >> This patch is the result of discussion on thread [1]. >> >>> Fixing the query implementation to use the PMD callback for such cases. >>> >>> Fixes: b77d21cc2364 ("ethdev: add link status get/set helper functions") >>> Cc: stable@dpdk.org >>> Cc: stephen@networkplumber.org >>> Cc: nelio.laranjeiro@6wind.com >> >> Acked-by: Nelio Laranjeiro >> >>> Signed-off-by: Shahaf Shuler > > Looks OK > > Acked-by: Thomas Monjalon Applied to dpdk-next-net/master, thanks.