From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-we0-x236.google.com (mail-we0-x236.google.com [IPv6:2a00:1450:400c:c03::236]) by dpdk.org (Postfix) with ESMTP id E41AC6931 for ; Thu, 23 May 2013 21:52:33 +0200 (CEST) Received: by mail-we0-f182.google.com with SMTP id q57so2085887wes.27 for ; Thu, 23 May 2013 12:52:38 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20120113; h=message-id:date:from:organization:user-agent:mime-version:to :subject:references:in-reply-to:content-type :content-transfer-encoding:x-gm-message-state; bh=2GkDktr55AXDgJQu8iLdtO56yfscwqDHQaWE8uVtFvc=; b=KnKT0aCPIZHtOyTtpNEvTYmq5SDXPpli2VtqrDwWYkNbhoUPT9edOn6Ilas2A1D+0z jFp7wNkNU5z3WGfVQepdp2xI5e4KQeVPtbjFWa1psFRh2MaLkOtf0yUmmHIvWMTzS286 nDmfBTmOqBljckZ5L8wDl97XeVhl7y5I34zR2wdtB2+4U3pQ8yClXRqF6+mq3XsAp1xd +OdoVL2wcOwEALGWsMsYjRW/1Ch7BI21m+5vQpxtLqVioDheM9ctAuqo58nD5xdbTU1b 1qJgyAAfblL0RIEha9ed0cX2h5kwHComKyv0eI/SAR0aLu9UZsd4Drsz936f5MPYp/ib NtRA== X-Received: by 10.180.39.233 with SMTP id s9mr27835739wik.25.1369338758130; Thu, 23 May 2013 12:52:38 -0700 (PDT) Received: from saturne.dev.6wind.com ([2a01:e35:8a8e:1b70:226:b9ff:fec7:e133]) by mx.google.com with ESMTPSA id fv11sm19805539wic.11.2013.05.23.12.52.36 for (version=TLSv1 cipher=RC4-SHA bits=128/128); Thu, 23 May 2013 12:52:37 -0700 (PDT) Message-ID: <519E7383.6030507@6wind.com> Date: Thu, 23 May 2013 21:52:35 +0200 From: Vincent JARDIN Organization: www.6wind.com User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:17.0) Gecko/20130311 Thunderbird/17.0.4 MIME-Version: 1.0 To: Antti Kantee , dev@dpdk.org References: <519E4686.90406@iki.fi> <20130523103445.2dc6feb5@nehalam.linuxnetplumber.net> <519E63EA.9020700@iki.fi> <20130523122024.1dc6837d@nehalam.linuxnetplumber.net> <519E7044.8070403@iki.fi> In-Reply-To: <519E7044.8070403@iki.fi> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit X-Gm-Message-State: ALoCoQlk1szpgmsfzU7LmJZ+d5JDLjqOcoadgZrQRUJeo6hp9z9bMBYSlz/JmFdlJXdhJP/mRHFd Subject: Re: [dpdk-dev] announcing rump kernel TCP/IP stack for DPDK X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: patches and discussions about DPDK List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 23 May 2013 19:52:34 -0000 Hi Antti, We had to develop a complete logic from scratch (aka fast path logic) to get a TCP/IP stack with good performances for 6WIND (including some Openflow switching). Unfortunately, as part of our DPDK opensource contribution, we do not plan to publish under open source our 6WINDGate stack (yet). However, you are very welcomed to introduce a TCP/IP stack for the DPDK. What kind of support/benchmark did you run? Would you like to get it mainstream into the DPDK? Best regards, Vincent On 23/05/2013 21:38, Antti Kantee wrote: > On 23.05.2013 21:20, Stephen Hemminger wrote: >>> I'm aware of the paper you linked given that I wrote it. I don't agree >>> that it supports your claim "already done several times before". >> >> I was more worried about multiple different TCP-IP stacks that seem >> to be only used by small number of people and not maintained. Doing full >> TCP/IP is hard, and there are lots of features inside. >> It would be great to have one that is well supported and maintained. > > I'm also well aware that doing TCP/IP right is very very hard. It's not > possible sit down with the spec for a weekend, write up some code, and > hope it will work in the real world. That's why I didn't implement > TCP/IP. The implementation I mentioned is the unmodified NetBSD kernel > TCP/IP stack running on a very thin hypervisor layer. It's not > maintained by a few people, it's literally maintained by the entire > NetBSD community. Furthermore, it's not a set of patches available for > the NetBSD kernel updated every now and then, it's literally [in] the > kernel. It's been working this way since 2008. What I did now was just > write 200 lines of code to plug the TCP/IP stack onto DPDK. > > Hopefully that convinced you that it's not just some random one-shot > kinda-works-except-in-reality bitrot attractor ;) > > - antti