Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932086AbWICURd (ORCPT ); Sun, 3 Sep 2006 16:17:33 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S932095AbWICURc (ORCPT ); Sun, 3 Sep 2006 16:17:32 -0400 Received: from [201.76.29.144] ([201.76.29.144]:60364 "EHLO dumont.rtb.ath.cx") by vger.kernel.org with ESMTP id S932086AbWICURb (ORCPT ); Sun, 3 Sep 2006 16:17:31 -0400 Date: Sun, 3 Sep 2006 17:13:35 -0300 From: =?iso-8859-1?Q?Rog=E9rio?= Brito To: linux-kernel@vger.kernel.org, linux-netdev@vger.kernel.org, John Heffner , "David S. Miller" Subject: Problems with ipv4 part of Kernels post-2.6.16 Message-ID: <20060903201335.GA3703@ime.usp.br> MIME-Version: 1.0 Content-Type: multipart/mixed; boundary="u3/rZRmxL6MmkK24" Content-Disposition: inline Content-Transfer-Encoding: 8bit User-Agent: Mutt/1.5.13 (2006-08-11) Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 4274 Lines: 113 --u3/rZRmxL6MmkK24 Content-Type: text/plain; charset=iso-8859-1 Content-Disposition: inline Content-Transfer-Encoding: 8bit Hi, John, David and others developers. I have been trying to keep up with the kernel releases (not only the -rc ones, but also some -mm's) and I noticed something quite strange: with some post 2.6.16 kernels (say, 2.6.17), I can't access (from where I am) the site www.everymac.com, while I can access other sites. This has made me quite curious, because just booting back with a 2.6.16.x kernel, I could access it, which, of course, led me to think this was a problem with the networking part of the kernel. Well, to cut a long story short, yesterday I decided to learn how to use git, grabbed Linus's tree and started a bisection session. After 12 recompilations, I found the following patch being the first suspect (sorry for the line wrapping, but I copied this one from one console to another, since I don't know how to generate it again with git): - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - rbrito@dumont:/usr/local/media/progs/linux/kernel/linux-git$ git bisect good 7b4f4b5ebceab67ce440a61081a69f0265e17c2a is first bad commit commit 7b4f4b5ebceab67ce440a61081a69f0265e17c2a Author: John Heffner Date: Sat Mar 25 01:34:07 2006 -0800 [TCP]: Set default max buffers from memory pool size This patch sets the maximum TCP buffer sizes (available to automatic buffer tuning, not to setsockopt) based on the TCP memory pool size. The maximum sndbuf and rcvbuf each will be up to 4 MB, but no more than 1/128 of the memory pressure threshold. Signed-off-by: John Heffner Signed-off-by: David S. Miller :040000 040000 514849b6a38c5fb671f3aeae1c0108a0e8e897dc 3b912fd10db444b22262f995fac99f2851363531 M net rbrito@dumont:/usr/local/media/progs/linux/kernel/linux-git$ - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - I'm currently connected to my provider via cable modem and I'm assigned an IP address via DHCP (actually, I'm using a D-Link DI-524 router in between, but I already tested *without* the router in the middle and the problem remains). The contents of my /etc/sysctl.conf file are attached. My userspace is Debian's testing/etch, regularly upgraded every day. My system is a Duron 1.1GHz, with 512MB of RAM and a KT133 (VIA) chipset, with the network card being a Realtek RTL8139. I would like to point out that this has prevented me from using/testing other newer kernels. :-( If anything else is required, please, don't hesitate to ask. I will try my best to use any patches that may seem relevant, until we can point out what may be happening. Thanks, Rog?rio Brito. P.S.: Please, I'm not (currently) subscribed to any mailing list. I'd appreciate if the CCs weren't trimmed. -- Rog?rio Brito : rbrito@ime.usp.br : http://www.ime.usp.br/~rbrito Homepage of the algorithms package : http://algorithms.berlios.de Homepage on freshmeat: http://freshmeat.net/projects/algorithms/ --u3/rZRmxL6MmkK24 Content-Type: text/plain; charset=iso-8859-1 Content-Disposition: attachment; filename="sysctl.conf" # # /etc/sysctl.conf - Configuration file for setting system variables # See sysctl.conf (5) for information. # # Uncomment the following to stop low-level messages on console #kernel.printk = 4 4 1 7 ##############################################################3 # Functions previously found in netbase # #net.ipv4.conf.default.forwarding=1 #net.ipv6.conf.default.forwarding=1 dev.rtc.max-user-freq=1024 net.ipv4.conf.all.accept_redirects=0 net.ipv4.conf.all.accept_source_route=0 net.ipv4.conf.all.log_martians=1 net.ipv4.conf.all.rp_filter=1 net.ipv4.conf.default.accept_redirects=0 net.ipv4.conf.default.accept_source_route=0 net.ipv4.conf.default.log_martians=1 net.ipv4.conf.default.rp_filter=1 net.ipv4.icmp_echo_ignore_broadcasts=1 net.ipv4.tcp_syncookies=1 --u3/rZRmxL6MmkK24-- -- VGER BF report: U 0.732442 - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/