From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Tue, 14 Aug 2001 18:49:47 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Tue, 14 Aug 2001 18:49:37 -0400 Received: from relay01.cablecom.net ([62.2.33.101]:59403 "EHLO relay01.cablecom.net") by vger.kernel.org with ESMTP id ; Tue, 14 Aug 2001 18:49:21 -0400 Content-Type: text/plain; charset=US-ASCII From: Christian Widmer Reply-To: cwidmer@iiic.ethz.ch To: linux-kernel@vger.kernel.org Subject: checksumming on a DP83820 Date: Wed, 15 Aug 2001 00:49:00 +0200 X-Mailer: KMail [version 1.2] MIME-Version: 1.0 Message-Id: <01081417581000.04104@asterix> Content-Transfer-Encoding: 7BIT Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org does anybody know the DP83820 which is used on the GigaNix NIC and can awnser me the folloing question or knows where to ask. the DP83820 supports IP/UDP/TCP checksumming. the chip docu say you can mark the transmit descriptior when it contains a IP, UDP, TCP header. 1) is it possible for udp to spread multiple descriptios and the checksum will be calculated? 2) if so can it be bigger than a jumboframe? i don't find any awnsers in the chip docu from national. i think 1) could be possible but 2) not. am i right? thanks chris