From owner-freebsd-net@FreeBSD.ORG Fri Nov 12 09:35:52 2010 Return-Path: Delivered-To: freebsd-net@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 69FD4106566C for ; Fri, 12 Nov 2010 09:35:52 +0000 (UTC) (envelope-from lstewart@freebsd.org) Received: from lauren.room52.net (lauren.room52.net [210.50.193.198]) by mx1.freebsd.org (Postfix) with ESMTP id D84228FC25 for ; Fri, 12 Nov 2010 09:35:51 +0000 (UTC) Received: from lawrence1.loshell.room52.net (ppp59-167-184-191.static.internode.on.net [59.167.184.191]) by lauren.room52.net (Postfix) with ESMTPSA id D7C817E84A; Fri, 12 Nov 2010 20:35:45 +1100 (EST) Message-ID: <4CDD0A71.7020708@freebsd.org> Date: Fri, 12 Nov 2010 20:35:45 +1100 From: Lawrence Stewart User-Agent: Mozilla/5.0 (X11; U; FreeBSD amd64; en-AU; rv:1.9.2.9) Gecko/20101006 Lightning/1.0b2 Thunderbird/3.1.4 MIME-Version: 1.0 To: freebsd-current@FreeBSD.org Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit X-Spam-Status: No, score=0.0 required=5.0 tests=UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on lauren.room52.net X-Mailman-Approved-At: Fri, 12 Nov 2010 09:55:54 +0000 Cc: Subject: [HEADS UP] Significant TCP work committed to head X-BeenThere: freebsd-net@freebsd.org X-Mailman-Version: 2.1.5 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, 12 Nov 2010 09:35:52 -0000 Hi All, A quick note that this evening, I made the first in a series of upcoming commits to head that modify the TCP stack fairly significantly. I have no reason to believe you'll notice any issues, but TCP is a complex beast and it's possible things might crop up. The changes are mostly related to congestion control, so the sorts of issues that are likely to crop up if any will most probably be subtle and difficult to even detect. The first svn revision in question is r215166. The next few commits I plan to make will be basically zero impact and then another significant patch will follow in a few weeks. If you bump into an issue that you think might be related to this work, please roll back r215166 from your tree and attempt to reporoduce before reporting the problem. Please CC me directly with your problem report and post to freebsd-current@ or freebsd-net@ as well. Lots more information about what all this does and how to use it will be following in the coming weeks, but in the meantime, just keep this note in the back of your mind. For the curious, some information about the project is available at [1,2]. Cheers, Lawrence [1] http://caia.swin.edu.au/freebsd/5cc/ [2] http://www.freebsd.org/news/status/report-2010-07-2010-09.html#Five-New-TCP-Congestion-Control-Algorithms-for-FreeBSD