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 DD6DFA2EFC for ; Mon, 14 Oct 2019 18:10:30 +0200 (CEST) Received: from [92.243.14.124] (localhost [127.0.0.1]) by dpdk.org (Postfix) with ESMTP id 2C8AC1C0D9; Mon, 14 Oct 2019 18:10:30 +0200 (CEST) Received: from mga06.intel.com (mga06.intel.com [134.134.136.31]) by dpdk.org (Postfix) with ESMTP id 262241C0D4 for ; Mon, 14 Oct 2019 18:10:28 +0200 (CEST) X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga006.jf.intel.com ([10.7.209.51]) by orsmga104.jf.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 14 Oct 2019 09:10:27 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.67,296,1566889200"; d="scan'208";a="199442341" Received: from fyigit-mobl.ger.corp.intel.com (HELO [10.237.221.10]) ([10.237.221.10]) by orsmga006.jf.intel.com with ESMTP; 14 Oct 2019 09:10:26 -0700 To: Igor Ryzhov , dev@dpdk.org Cc: aconole@redhat.com, Dan Gora References: <20190924193312.17381-1-iryzhov@nfware.com> <20190925093623.18419-1-iryzhov@nfware.com> From: Ferruh Yigit Openpgp: preference=signencrypt 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 v3] kni: rework rte_kni_update_link using ioctl 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 9/25/2019 10:36 AM, Igor Ryzhov wrote: > Current implementation doesn't allow us to update KNI carrier if the > interface is not yet UP in kernel. It means that we can't use it in the > same thread which is processing rte_kni_ops.config_network_if, which is > very convenient, because it allows us to have correct carrier status > of the interface right after we enabled it and we don't have to use any > additional thread to track link status. Hi Igor, The existing thread tracks the link status of the physical device and reflects the changes to the kni netdev, but the "struct rte_kni_ops" (rte_kni_ops.config_network_if) works other way around, it captures (some) requests to kni netdev and reflects them to the underlying physical device. Even 'rte_kni_update_link()' updated to use ioctl, the thread still looks required and this patch doesn't really changes that part. Also I am reluctant to extend the KNI ioctl interface when there is a generic way to do that work. What is the use case of updating kni netdev carrier status when the interface is down? > > Signed-off-by: Igor Ryzhov <...>