From mboxrd@z Thu Jan 1 00:00:00 1970 From: Blaschka Subject: question regarding hw tx csum for IPv6 Date: Tue, 16 Mar 2010 10:11:49 +0100 Message-ID: <20100316091149.GA2680@tuxmaker.boeblingen.de.ibm.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii To: netdev@vger.kernel.org Return-path: Received: from mtagate5.de.ibm.com ([195.212.17.165]:46547 "EHLO mtagate5.de.ibm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932662Ab0CPJLu (ORCPT ); Tue, 16 Mar 2010 05:11:50 -0400 Received: from d12nrmr1607.megacenter.de.ibm.com (d12nrmr1607.megacenter.de.ibm.com [9.149.167.49]) by mtagate5.de.ibm.com (8.13.1/8.13.1) with ESMTP id o2G9Bn6S000846 for ; Tue, 16 Mar 2010 09:11:49 GMT Received: from d12av02.megacenter.de.ibm.com (d12av02.megacenter.de.ibm.com [9.149.165.228]) by d12nrmr1607.megacenter.de.ibm.com (8.13.8/8.13.8/NCO v10.0) with ESMTP id o2G9Bnq41433772 for ; Tue, 16 Mar 2010 10:11:49 +0100 Received: from d12av02.megacenter.de.ibm.com (loopback [127.0.0.1]) by d12av02.megacenter.de.ibm.com (8.12.11.20060308/8.13.3) with ESMTP id o2G9BnRw028500 for ; Tue, 16 Mar 2010 10:11:49 +0100 Received: from tuxmaker.boeblingen.de.ibm.com (tuxmaker.boeblingen.de.ibm.com [9.152.85.9]) by d12av02.megacenter.de.ibm.com (8.12.11.20060308/8.12.11) with ESMTP id o2G9Bnh5028497 for ; Tue, 16 Mar 2010 10:11:49 +0100 Content-Disposition: inline Sender: netdev-owner@vger.kernel.org List-ID: Hi, for me it looks like many network drivers exclude IPv6 frames from tx hw csum in case they have extended IPv6 headers. Does the stack generates the csum for this kind of frames anyhow the device claims to do NETIF_F_HW_CSUM? Thanks for any help Frank