From mboxrd@z Thu Jan 1 00:00:00 1970 From: "John A. Sullivan III" Subject: tc filter mask for ACK packets off? Date: Sat, 31 Dec 2011 21:30:56 -0500 Message-ID: <1325385056.4174.51.camel@denise.theartistscloset.com> Mime-Version: 1.0 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 7bit To: netdev@vger.kernel.org Return-path: Received: from mout.perfora.net ([74.208.4.194]:52267 "EHLO mout.perfora.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751033Ab2AACa7 (ORCPT ); Sat, 31 Dec 2011 21:30:59 -0500 Sender: netdev-owner@vger.kernel.org List-ID: Hello, all. I've been noticing that virtually all the documentation says we should prioritize ACK only packets and that they can be identified with match u8 0x10 0xff. However, isn't the actual flag field only 6 bits longs and the first two belong to a previous 6 bit reserved field? If that is true, if ever those bits are set, our filters will unnecessarily break. Shouldn't it be match u8 0x10 0x3f? Then again, I'm very new at this. Thanks - John