From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S262431AbVBCDnV (ORCPT ); Wed, 2 Feb 2005 22:43:21 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S262428AbVBCDnV (ORCPT ); Wed, 2 Feb 2005 22:43:21 -0500 Received: from stinkfoot.org ([65.75.25.34]:46552 "EHLO stinkfoot.org") by vger.kernel.org with ESMTP id S262941AbVBCDm4 (ORCPT ); Wed, 2 Feb 2005 22:42:56 -0500 Message-ID: <42019E0E.1020205@stinkfoot.org> Date: Wed, 02 Feb 2005 22:44:14 -0500 From: Ethan Weinstein User-Agent: Mozilla Thunderbird 0.9 (X11/20041103) X-Accept-Language: en-us, en MIME-Version: 1.0 To: linux-kernel@vger.kernel.org Subject: e1000, sshd, and the infamous "Corrupted MAC on input" Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Hey all, I've been having quite a time with the e1000 driver running at gigabit speeds. Running it at 100Fdx has never been a problem, which I've done done for a long time. Last week I picked up a gigabit switch, and that's when the trouble began. I find that transferring large amounts of data using scp invariably ends up with sshd spitting out "Disconnecting: Corrupted MAC on input." After deciding I must have purchased a bum switch, I grabbed another model.. only to get the same error. Finally, I used a crossover cable between the two boxes, which resulted in the same error from sshd again. Both systems are 2.6.10, with 4k stacks, and regparm enabled. system 1 has an onboard Intel 82547EI, system 2 has an onboard Intel 82545EM, both have NAPI enabled... Oddly, running the nics at 100Fdx does not generate this error no matter how much pressure I put on them. I've found a lot of scuttlebutt regarding these problems with sshd on the net, but this appears a hardware/driver problem. There's mention of a specific problem with e1000 here: http://www.psc.edu/networking/projects/hpn-ssh but no apparent resolution. Any suggestions are greatly appreciated. -E