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 A690EA046B for ; Fri, 28 Jun 2019 15:00:06 +0200 (CEST) Received: from [92.243.14.124] (localhost [127.0.0.1]) by dpdk.org (Postfix) with ESMTP id 78BC34C8B; Fri, 28 Jun 2019 15:00:06 +0200 (CEST) Received: from mga02.intel.com (mga02.intel.com [134.134.136.20]) by dpdk.org (Postfix) with ESMTP id 962814C6C for ; Fri, 28 Jun 2019 15:00:04 +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 orsmga101.jf.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 28 Jun 2019 06:00:02 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.63,427,1557212400"; d="scan'208";a="173470166" Received: from fyigit-mobl.ger.corp.intel.com (HELO [10.237.221.30]) ([10.237.221.30]) by orsmga002.jf.intel.com with ESMTP; 28 Jun 2019 06:00:01 -0700 To: "Ferriter, Cian" , "Richardson, Bruce" , "Mcnamara, John" , "Kovacevic, Marko" Cc: "dev@dpdk.org" References: <20190614144337.17177-1-cian.ferriter@intel.com> <20190614144337.17177-2-cian.ferriter@intel.com> <579B86492DFB364BBA627A48FB30C90E75D7C3D3@IRSMSX102.ger.corp.intel.com> From: Ferruh Yigit Openpgp: preference=signencrypt Autocrypt: addr=ferruh.yigit@intel.com; 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WOW64; rv:60.0) Gecko/20100101 Thunderbird/60.7.2 MIME-Version: 1.0 In-Reply-To: <579B86492DFB364BBA627A48FB30C90E75D7C3D3@IRSMSX102.ger.corp.intel.com> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit Subject: Re: [dpdk-dev] [PATCH 19.08 v3 2/2] net/pcap: enable infinitely rxing a pcap file 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 6/28/2019 1:32 PM, Ferriter, Cian wrote: > Hi Ferruh, > > I've responded inline but to summarize, I agree with both of your points. > > There is one additional piece of rework that I spotted for this version. I have left out a small part of the commit message. Please see my response inline below for more details. > > Since the rework is minor here, I'd be happy if you wanted to make the changes and apply the patches to save going through another version + review cycle. +1, I will update them while merging. > > Let me know if there is anything else. > Thanks, > Cian > >> -----Original Message----- >> From: Yigit, Ferruh >> Sent: 27 June 2019 18:56 >> To: Ferriter, Cian ; Richardson, Bruce >> ; Mcnamara, John >> ; Kovacevic, Marko >> >> Cc: dev@dpdk.org >> Subject: Re: [PATCH 19.08 v3 2/2] net/pcap: enable infinitely rxing a pcap file >> >> On 6/14/2019 3:43 PM, Cian Ferriter wrote: >>> It can be useful to use pcap files for some rudimental performance >>> > > Part of the commit message got lost in my splitting of the patch into two patches between v2 and v3. The above line should read: > It can be useful to use pcap files for some rudimental performance > testing. This patch enables this functionality in the pcap driver. > >>> At a high level, this works by creaing a ring of sufficient size to >>> store the packets in the pcap file passed to the application. When the >>> rx function for this mode is called, packets are dequeued from the >>> ring for use by the application and also enqueued back on to the ring >>> to be "received" again. >>> >>> A tx_drop mode is also added since transmitting to a tx_pcap file >>> isn't desirable at a high traffic rate. >>> >>> Jumbo frames are not supported in this mode. When filling the ring at >>> rx queue setup time, the presence of multi segment mbufs is checked for. >>> The PMD will exit on detection of these multi segment mbufs. >>> >>> Signed-off-by: Cian Ferriter >> >> <...> >> >>> @@ -106,6 +106,26 @@ Runtime Config Options >>> >>> --vdev 'net_pcap0,iface=eth0,phy_mac=1' >>> >>> +- Use the RX PCAP file to infinitely receive packets >>> + >>> + In case ``rx_pcap=`` configuration is set, user may want to use the >>> + selected PCAP file for rudimental performance testing. This can be done >> with a ``devarg`` ``infinite_rx``, for example:: >>> + >>> + --vdev 'net_pcap0,rx_pcap=file_rx.pcap,infinite_rx=1,tx_drop=1' >> >> 'tx_drop' seems remaining, it is no more valid. >> > > I missed this, it should be removed. > >> <...> >> >>> @@ -1337,6 +1551,9 @@ pmd_pcap_remove(struct rte_vdev_device >> *dev) >>> eth_dev->data->mac_addrs = NULL; >>> } >>> >>> + if (internals->infinite_rx) >>> + eth_dev_close(eth_dev); >> >> Why 'internals->infinite_rx' check is required to call the 'eth_dev_close()'? >> Can we remove the check? > > Good point, we don't need to check whether the device is in infinite_rx mode, since this is done in eth_dev_close anyway. >