From mboxrd@z Thu Jan 1 00:00:00 1970 From: David Miller Subject: Re: high rate injection and fragmentation Date: Mon, 09 Feb 2009 15:10:58 -0800 (PST) Message-ID: <20090209.151058.193026368.davem@davemloft.net> References: <3f847c820902090720w98e2ca8pc66f55716c030194@mail.gmail.com> <3f847c820902090918j4da4b94o3eee35415f088afb@mail.gmail.com> Mime-Version: 1.0 Content-Type: Text/Plain; charset=iso-8859-1 Content-Transfer-Encoding: QUOTED-PRINTABLE Cc: ilpo.jarvinen@helsinki.fi, netdev@vger.kernel.org To: rauhersu@gmail.com Return-path: Received: from 74-93-104-97-Washington.hfc.comcastbusiness.net ([74.93.104.97]:42047 "EHLO sunset.davemloft.net" rhost-flags-OK-FAIL-OK-OK) by vger.kernel.org with ESMTP id S1752264AbZBIXLE convert rfc822-to-8bit (ORCPT ); Mon, 9 Feb 2009 18:11:04 -0500 In-Reply-To: <3f847c820902090918j4da4b94o3eee35415f088afb@mail.gmail.com> Sender: netdev-owner@vger.kernel.org List-ID: =46rom: Ra=FAl Hern=E1ndez Date: Mon, 9 Feb 2009 18:18:50 +0100 > Hi Ilpo, >=20 > Thanks for your answer, I did not know about that feature. Looking at > my settings: >=20 > # ethtool -k eth2 > ... > tcp segmentation offload: on >=20 > I think ethereal hooks up before reaching the TCP offload which is > handled by the NIC. No, the packets will be large as created by the TCP stack, and then the NIC hardware splits them up as it transmits them onto the wire.