From owner-freebsd-net@freebsd.org Mon Nov 23 16:11:50 2015 Return-Path: Delivered-To: freebsd-net@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 0AD15A36548 for ; Mon, 23 Nov 2015 16:11:50 +0000 (UTC) (envelope-from julian@freebsd.org) Received: from vps1.elischer.org (vps1.elischer.org [204.109.63.16]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id CBE32149C for ; Mon, 23 Nov 2015 16:11:49 +0000 (UTC) (envelope-from julian@freebsd.org) Received: from Julian-MBP3.local (50-196-156-133-static.hfc.comcastbusiness.net [50.196.156.133]) (authenticated bits=0) by vps1.elischer.org (8.15.2/8.15.2) with ESMTPSA id tANGBhfB062679 (version=TLSv1.2 cipher=DHE-RSA-AES128-SHA bits=128 verify=NO); Mon, 23 Nov 2015 08:11:46 -0800 (PST) (envelope-from julian@freebsd.org) Subject: Re: Is it allowed to copy hyper-v drivers from FreeBSD 10 and packed it into FreeBSD 9.2 To: Adrian Chadd , Hongjiang Zhang References: Cc: "freebsd-net@freebsd.org" From: Julian Elischer Message-ID: <56533AB9.80707@freebsd.org> Date: Tue, 24 Nov 2015 00:11:37 +0800 User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.11; rv:38.0) Gecko/20100101 Thunderbird/38.3.0 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=windows-1252; format=flowed Content-Transfer-Encoding: 7bit X-BeenThere: freebsd-net@freebsd.org X-Mailman-Version: 2.1.20 Precedence: list List-Id: Networking and TCP/IP with FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 23 Nov 2015 16:11:50 -0000 On 23/11/2015 11:30 PM, Adrian Chadd wrote: > On 22 November 2015 at 21:58, Hongjiang Zhang wrote: >> Hi, >> >> Some people, who used FreeBSD 9.2 and back-port network driver for Hyper-v from FreeBSD 10, encountered a network issue. They installed 2 VM (FreeBSD 9.2 with the customized FreeBSD kernel) on Azure. Network went offline very soon when the big file (~320M byte) is copied from one VM to anther through "scp". If TSO is disabled through "sysctl -w net.inet.tcp.tso=0", this issue will be alleviated but cannot be eliminated. I did not figure out why. >> >> I have checked the release notes of FreeBSD 9.2/9.3/10, but did not find anything which blocked the back-port. It is supposed 9.2 allows the back-ported Hyper-v drivers from 10. Is this assumption correct? > Hi! > > It may be something to do with maximum mbufs per packet or some other > limit like that. Is there a lot of interest in backporting the latest > hyperv driver to 9.2? I believe we ($JOB) have them back ported to 8.0. (I didn't do the work) > > > -a > >> _______________________________________________ >> freebsd-net@freebsd.org mailing list >> https://lists.freebsd.org/mailman/listinfo/freebsd-net >> To unsubscribe, send any mail to "freebsd-net-unsubscribe@freebsd.org" > _______________________________________________ > freebsd-net@freebsd.org mailing list > https://lists.freebsd.org/mailman/listinfo/freebsd-net > To unsubscribe, send any mail to "freebsd-net-unsubscribe@freebsd.org" >