From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-io0-f176.google.com (mail-io0-f176.google.com [209.85.223.176]) by dpdk.org (Postfix) with ESMTP id 564DF2C59 for ; Wed, 9 Mar 2016 11:27:09 +0100 (CET) Received: by mail-io0-f176.google.com with SMTP id z76so60292447iof.3 for ; Wed, 09 Mar 2016 02:27:09 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=semihalf-com.20150623.gappssmtp.com; s=20150623; h=mime-version:in-reply-to:references:from:date:message-id:subject:to :cc; bh=+I/s8lO6Wcfah4TYnbxzjKUA7sOH4JyDR71vWrLstHI=; b=xj6N0JhnjHhW3X4pg2tsT8F9upySrJPRPHmj2gmfziNFCGxfJvV5rtd535m0NNhiiq qR4zLnAbC6Je/RE/AwHVij/slwykd62KXROePBXI2qj3LQKF+X+M0eBtZmXw59vVz3w5 h96f1JBfdLRIVRfIIbWs4KxyMHfF6G+YstnRmMJ9D+rGJPu6mbwPXTiXY16T8sVDVpkE AMvuVy4WZFg8gWIK3M2DQFXoJQ8oS8mb5atC1TnLmIbh6pqavytWyONVpE9BPSYdYmlC ZqD8oqcNxvaPT/oCXbY4mea9x0vHXgFM5n6qhFnXUg12JsPLpDIZE83MUTVjwZ77Pqq3 FKQQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:mime-version:in-reply-to:references:from:date :message-id:subject:to:cc; bh=+I/s8lO6Wcfah4TYnbxzjKUA7sOH4JyDR71vWrLstHI=; b=lyUYJ6wXCx/AcL9E2UQLlgUmR41bkOamTT6Nhsp7cU8EtFkJG02PcGLI3WnjxTGhah W/O9P++VvgTMpPU/uAFb9KwCD/kECTaATuz8q/7AlCM00J+mi3DDRmq+m9F8RCwgyCiB WV//I2pjrJIKHIJ/vgoXl6aBqWZruQy9m1LluJDOo/nnFtXMcUT1ohO31H0zaWnO5k1f rq08lus4hEwV4i9k7pa1vMPTwmaorTgHRpbYPgBiiHGVpuZWrMs7brI6aTEolVenTnTo 5O5odGR2yc42PuOxtsSHgHjv4DA2ZO+g7RvOd48FraR7NTG5no3TijUnig7ntr9VF+52 4UsA== X-Gm-Message-State: AD7BkJLdJ4841RtTZdcX8WQ/VW6XkmsX27J5ikpumo6h8XusNg5uoDDdby8qPtPFvtfESSX4IF9IMLn2Mx/Luw== X-Received: by 10.107.185.65 with SMTP id j62mr37481787iof.52.1457519228904; Wed, 09 Mar 2016 02:27:08 -0800 (PST) MIME-Version: 1.0 Received: by 10.64.141.6 with HTTP; Wed, 9 Mar 2016 02:26:49 -0800 (PST) In-Reply-To: References: From: Andriy Berestovskyy Date: Wed, 9 Mar 2016 11:26:49 +0100 Message-ID: To: Mahdi Moradmand Badie Content-Type: text/plain; charset=UTF-8 Cc: users@dpdk.org Subject: Re: [dpdk-users] [dpdk-dev] how to Read(Write) from(to) via lcores in dpdk regardless of NIC X-BeenThere: users@dpdk.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: usage discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 09 Mar 2016 10:27:09 -0000 Mahdi, 1. Sure, the rte_ring is another good way to communicate between the lcores. If you have just one "worker" lcore or you do not care about packet ordering, you might prefer using rte_ring over the rte_distributor. 2. For the simplicity, you might assume that any of your shared structures (rte_ring or rte_distributor) eventually get into the cache. Andriy On Tue, Mar 8, 2016 at 10:49 PM, Mahdi Moradmand Badie wrote: > Another issue, ;) > How I could access to the share memory cache of lcores (L3), the rte_ring > is exactly that?? > > On 8 March 2016 at 13:08, Mahdi Moradmand Badie > wrote: > >> Dear Andriy, >> Sorry for interrupt again, >> As I see in rte_distributor, it is using rte_eth (ethernet), while I >> wanna without using any NIC because I don't have it on my personal computer >> :) >> >> On 8 March 2016 at 11:49, Mahdi Moradmand Badie >> wrote: >> >>> Thanks so much Andriy, >>> Regarding cross-post, yes you are right sorry about that and of course >>> afterwards. >>> >>> On 8 March 2016 at 03:17, Andriy Berestovskyy wrote: >>> >>>> Hi Mahdi, >>>> Looks like the DPDK's rte_distributor is the right tool for your task. >>>> Please have a look at: >>>> http://dpdk.org/doc/guides/prog_guide/packet_distrib_lib.html >>>> >>>> There is also the Distributor Sample Application in DPDK: >>>> http://dpdk.org/doc/guides/sample_app_ug/dist_app.html >>>> >>>> >>>> Please do not cross-post to dev@ mailing list. >>>> >>>> Regards, >>>> Andriy >>>> >>>> On Tue, Mar 8, 2016 at 6:41 AM, Mahdi Moradmand Badie >>>> wrote: >>>> > I wanna create for example 3 different packets in core_0 as master and >>>> > store them one by one in share memory(rte_ring), >>>> > then the core_1 as slave read them and do function on them (ex. >>>> P1+P2+P3) >>>> > and again store in share memory, finally the core_0 read the packets >>>> from >>>> > share memory and compare them with whatever expected :) >>>> > As I said and you mentioned is the same? :) >>>> > >>>> > On 8 March 2016 at 00:35, Hamed Zaghaghi >>>> wrote: >>>> > >>>> >> Hi, >>>> >> >>>> >> If I understood well you need to do these tasks: >>>> >> 1. Packet crafting (I think that DPDK has no functions for this task) >>>> >> 2. Store packets (DPDK has (rte_mbuf)[ >>>> >> http://dpdk.org/doc/api/rte__mbuf_8h.html]) >>>> >> 3. Share between lcores (DPDK offers rte_ring) >>>> >> >>>> >> >>>> >> >>>> >> On Tue, Mar 8, 2016 at 8:45 AM Mahdi Moradmand Badie < >>>> >> mahdi.mbadie@gmail.com> wrote: >>>> >> >>>> >>> Dear Hamed, >>>> >>> >>>> >>> First of all thank you so much for your kindly reply, >>>> >>> >>>> >>> It's the primary part of the big project, in order to be more >>>> familiar >>>> >>> with DPDK, >>>> >>> I have to implement the mentioned framework by use of DPDK, >>>> >>> And finally we wanna implement the cache locking approach (via help >>>> of >>>> >>> features like Cache Allocation Technology(CAT), Cache Monitoring >>>> Technology >>>> >>> (CMT)) in Xeon processor (my supervisor told me this simple exercise >>>> >>> will be helpful to do the final part) in such a way we could >>>> dedicate a >>>> >>> specific part of shared memory (L3) to each core which the other >>>> don't >>>> >>> access to it. >>>> >>> Obviously using of DPDK with Xeon which both are from "Intel", is >>>> >>> considered as strength point. >>>> >>> >>>> >>> I hope this was more clear :) >>>> >>> >>>> >>> On 7 March 2016 at 23:56, Hamed Zaghaghi >>>> >>> wrote: >>>> >>> >>>> >>>> Hi Mahdi, >>>> >>>> >>>> >>>> Why do you want to use DPDK when you don't use NIC? You can do what >>>> you >>>> >>>> want outside of DPDK. >>>> >>>> >>>> >>>> Regards, >>>> >>>> Hamed Zaghaghi >>>> >>>> >>>> >>>> On Tue, Mar 8, 2016 at 12:16 AM Mahdi Moradmand Badie < >>>> >>>> mahdi.mbadie@gmail.com> wrote: >>>> >>>> >>>> >>>>> Dear All, >>>> >>>>> I am Mahdi and I am new in DPDK, >>>> >>>>> I wanna generate for example 3 different packets in core0 as master >>>> >>>>> write >>>> >>>>> it to share memory (L3), then core1 as slave read this packets, >>>> change >>>> >>>>> them >>>> >>>>> with for example function1 and write again in share memory (L3) and >>>> >>>>> finally >>>> >>>>> check the result with whatever I expect. >>>> >>>>> The most important thing is that I don't wanna use NIC and I don't >>>> know >>>> >>>>> for >>>> >>>>> working with cores how I can write/read to/from them, I mean with >>>> which >>>> >>>>> template and sequence??? >>>> >>>>> Thanks in advance, >>>> >>>>> >>>> >>>> >>>> >>> >>>> >>> >>>> >>> -- >>>> >>> M@hdi Mor@dm@nd B@die >>>> >>> >>>> >> >>>> > >>>> > >>>> > -- >>>> > M@hdi Mor@dm@nd B@die >>>> >>>> >>>> >>>> -- >>>> Andriy Berestovskyy >>>> >>> >>> >>> >>> -- >>> M@hdi Mor@dm@nd B@die >>> >> >> >> >> -- >> M@hdi Mor@dm@nd B@die >> > > > > -- > M@hdi Mor@dm@nd B@die -- Andriy Berestovskyy