From mboxrd@z Thu Jan 1 00:00:00 1970 From: Stephen Hemminger Subject: Re: [PATCH] IPV6 : segmentation offload not set correctly on TCP children Date: Fri, 25 Aug 2006 16:24:08 -0700 Message-ID: <20060825162408.6a9dbdcc@localhost.localdomain> References: <20060821212243.GA1558@cip.informatik.uni-erlangen.de> <20060821150231.31a947d4@localhost.localdomain> <20060821222634.GC21790@cip.informatik.uni-erlangen.de> <20060825154353.3ecaf508@localhost.localdomain> <20060825230626.GC4570@cip.informatik.uni-erlangen.de> Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Cc: "David S. Miller" , Herbert Xu , netdev@vger.kernel.org, linux-kernel@vger.kernel.org Return-path: Received: from smtp.osdl.org ([65.172.181.4]:5074 "EHLO smtp.osdl.org") by vger.kernel.org with ESMTP id S932261AbWHYXY3 (ORCPT ); Fri, 25 Aug 2006 19:24:29 -0400 To: Thomas Glanzmann In-Reply-To: <20060825230626.GC4570@cip.informatik.uni-erlangen.de> Sender: netdev-owner@vger.kernel.org List-Id: netdev.vger.kernel.org On Sat, 26 Aug 2006 01:06:26 +0200 Thomas Glanzmann wrote: > Hello Stephen, > thanks for the fix, it fixes the problem for me. I closed the bug. On > which hardware did you reproduce the bug and how did you found it? Did > you use git bisect? > > Thomas Using sky2 on Intel motherboard and git bisect. But Jesse found same problem on e1000. Bisect was relatively fast since it was either base net code or driver. Starting with 2.6.17, everything worked, and latest was busted. git bisect start net drivers/net/sky2.c Test was ipv6 slogin, then run dmesg. If that worked then run top and cause lots of other traffic by just doing a firefox open-tabs to blast lots of connections. Wanted to induce tcp-ipv6 to get congested. -- Stephen Hemminger All non-trivial abstractions, to some degree, are leaky.