From owner-freebsd-net@FreeBSD.ORG Fri Dec 13 15:48:21 2013 Return-Path: Delivered-To: net@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) (using TLSv1 with cipher ADH-AES256-SHA (256/256 bits)) (No client certificate requested) by hub.freebsd.org (Postfix) with ESMTPS id 589D8B18 for ; Fri, 13 Dec 2013 15:48:21 +0000 (UTC) Received: from alln-iport-5.cisco.com (alln-iport-5.cisco.com [173.37.142.92]) (using TLSv1 with cipher RC4-SHA (128/128 bits)) (No client certificate requested) by mx1.freebsd.org (Postfix) with ESMTPS id 0822D1387 for ; Fri, 13 Dec 2013 15:48:20 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=cisco.com; i=@cisco.com; l=15442; q=dns/txt; s=iport; t=1386949701; x=1388159301; h=from:to:cc:subject:date:message-id:references: in-reply-to:mime-version; bh=rWXCxlf3xzRL0LPnUohwaFrwR1L2Ntv4/yXWJpXdndQ=; b=WGUEvkS+4IYHY7ykuQSL0nBa+2b733H1ly8GQOaeShOrAt0eV7hiiwvO GtA3ytoZdXH+osNA1cdZCsVev6vR3X3aK8ouSwPSZcFn4sGa6w+AnFcTy uUoW4US9s+o6Az7RPeuqKBML4Cmcsl3iqtR3NJEE0qOi9pbzYxkvLebmP 8=; X-IronPort-Anti-Spam-Filtered: true X-IronPort-Anti-Spam-Result: AjgHAPYrq1KtJV2b/2dsb2JhbABZFoIwRDhVsAyIA06BIxZ0giUBAQECAgEBASohIAsQAgEIEQMBAgsdBx8CBgEJARQJCAIECAYBBAEHFQSHTwMRDcN1DYcKF40CgUIBAR4gEQYBBoMdgRMEjliGb2SDG4sqA4U3gyptgQQ5 X-IronPort-AV: E=Sophos;i="4.95,479,1384300800"; d="scan'208,217";a="6604286" Received: from rcdn-core-4.cisco.com ([173.37.93.155]) by alln-iport-5.cisco.com with ESMTP; 13 Dec 2013 15:48:19 +0000 Received: from xhc-aln-x13.cisco.com (xhc-aln-x13.cisco.com [173.36.12.87]) by rcdn-core-4.cisco.com (8.14.5/8.14.5) with ESMTP id rBDFmJNt020094 (version=TLSv1/SSLv3 cipher=AES128-SHA bits=128 verify=FAIL); Fri, 13 Dec 2013 15:48:19 GMT Received: from xmb-aln-x09.cisco.com ([169.254.4.234]) by xhc-aln-x13.cisco.com ([173.36.12.87]) with mapi id 14.03.0123.003; Fri, 13 Dec 2013 09:48:18 -0600 From: "Thirunavukarasu Sengalvarayan -X (tsengalv - HCL TECHNOLOGIES LIMITED at Cisco)" To: "rizzo@iet.unipi.it" Subject: RE: Netmap support for Virtual network driver Thread-Topic: Netmap support for Virtual network driver Thread-Index: AQHO9/dAqTEOXnSetUSeuf+Drq+Rk5pSBvew Date: Fri, 13 Dec 2013 15:48:18 +0000 Message-ID: References: In-Reply-To: Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-Auto-Response-Suppress: DR, OOF, AutoReply X-MS-TNEF-Correlator: x-originating-ip: [10.77.138.163] MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable X-Content-Filtered-By: Mailman/MimeDel 2.1.17 Cc: "waas-dev-hyperv\(mailer list\)" , "net@freebsd.org" X-BeenThere: freebsd-net@freebsd.org X-Mailman-Version: 2.1.17 Precedence: list List-Id: Networking and TCP/IP with FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 13 Dec 2013 15:48:21 -0000 (Continuing with below mail thread.) Hi Luigi, Thanks a lot for your quick response. Yes we have the source base for hyper-v network driver. Could you please provide us the patch for Netmap support in Hyper-v Network= drivers. Hyper-v has two kinds of NIC, emulated and Synthetic. In general emulated network drivers are relatively slow when compared to Sy= nthetic network drivers. Hence we planned to use synthetic network drivers(netvsc). You have pointed that we could use e1000 emulation as another option. Which driver would be better in terms of performance, Netmap with emulation= driver or Netmap with synthetic driver? Thanks Thiru. ---------- Forwarded message ---------- From: Luigi Rizzo > Date: Fri, Dec 13, 2013 at 12:54 AM Subject: Re: Netmap support for Virtual network driver To: Thirunavukarasu S > Cc: "freebsd-net@freebsd.org" > On Thu, Dec 12, 2013 at 7:02 PM, Thirunavukarasu S > wrote: Hi I am running a Virtual Linux machine on Hyper-v Microsoft Hypervisor. I am using netvsc drivers provided by Microsoft for virtual interfaces. Now I would like to add Netmap support for netvsc driver, after coming to know about its wide advantages. Does Netmap support for Microsoft Hyper-v Network drivers is already in place. or could you help in integrating netmap support in our netvsc drivers. we can definitely help with the integration as long as you have the hyperv drivers for the guest in source format another option might be to use the e1000 emulation in hyperv. but in any case don't hold your breath for performance, because chances are that the network I/O path in the hypervisor (hyperv in this case) is not able to sustain the data rates that netmap can generate. See the paper at this link to see what we did for QEMU/KVM http://info.iet.unipi.it/~luigi/papers/20130903-rizzo-ancs.pdf to make it run at netmap speeds cheers luigi Thanks Thiru. _______________________________________________ freebsd-net@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-net To unsubscribe, send any mail to "freebsd-net-unsubscribe@freebsd.org" -- -----------------------------------------+------------------------------- Prof. Luigi RIZZO, rizzo@iet.unipi.it . Dip. d= i Ing. dell'Informazione http://www.iet.unipi.it/~luigi/ . Universita` di Pisa TEL +39-050-2211611 . via Diotisalvi 2 Mobile +39-338-6809875 . 56122 PISA (Italy) -----------------------------------------+-------------------------------