Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1759421AbYBGQbB (ORCPT ); Thu, 7 Feb 2008 11:31:01 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1755630AbYBGQav (ORCPT ); Thu, 7 Feb 2008 11:30:51 -0500 Received: from smtp23.orange.fr ([193.252.22.126]:4447 "EHLO smtp23.orange.fr" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755399AbYBGQau convert rfc822-to-8bit (ORCPT ); Thu, 7 Feb 2008 11:30:50 -0500 X-ME-UUID: 20080207163029826.1419D701799B@mwinf2327.orange.fr Message-ID: <47AB321E.5080908@cosmosbay.com> Date: Thu, 07 Feb 2008 17:30:22 +0100 From: Eric Dumazet User-Agent: Thunderbird 1.5.0.14 (Windows/20071210) MIME-Version: 1.0 To: Marcin Koziej Cc: Oliver Pinter , linux-kernel@vger.kernel.org, netdev@vger.kernel.org Subject: Re: Bug? Kernels 2.6.2x drops TCP packets over wireless (independent of card used) References: <56de948.2f1b076b.47aac980.bfd66@o2.pl> <6101e8c40802070623t55115dc3h4cf508e432b9296f@mail.gmail.com> <776aaa6c.68622465.47ab2df0.78e4b@o2.pl> In-Reply-To: <776aaa6c.68622465.47ab2df0.78e4b@o2.pl> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8BIT Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1462 Lines: 33 Marcin Koziej a écrit : >> hmm, i think, the site is broken (193.219.28.140), and not the card or >> the driver is wrong. when it does, then other sites are auch >> reproductable .. >> >> /* is use auch madwifi-0.9.3.3, but it think, it is not driver problem */ >> > > Unfortunately, this is not the case :( This happens to all TCP connections, inside and outside LAN, > also with the telnet session with the router. I also tried to manipulate MTU, but without any positive effect. > I also tried to change things like net.ipv4.tcp_congestion_control -- which i figured out might affect TCP traffic, but also didn't get any results. > I'm afraid this can have something to do with IRQ, because the PCMCIA cards (my Atheros wireless card is such) are visible only with irqpoll kernel option. > > Of course, as I mentioned, everything works fine with kernel 2.6.19; with the same servers etc. > > Very strange, as the tcpdump you gave shows that the remote peer only sent "220-\r\n" This was ACKed, and then nothing but timeout. We can conclude remote peer is *very* slow or a firewall is blocking trafic after 6 bytes sent :) Could you give a tcpdump for the same destination, on 2.6.19 this time ? -- 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/