From mboxrd@z Thu Jan 1 00:00:00 1970 From: Richard Cochran Subject: Re: [PATCH net-next] dp83640: Fix receive timestamp race condition Date: Thu, 17 Jul 2014 21:24:24 +0200 Message-ID: <20140717192424.GA24456@localhost.localdomain> References: <1405603079-23572-1-git-send-email-stefan.sorensen@spectralink.com> <20140717181222.GB23623@localhost.localdomain> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Cc: davem@davemloft.net, netdev@vger.kernel.org To: Stefan =?iso-8859-1?Q?S=F8rensen?= Return-path: Received: from mail-wg0-f44.google.com ([74.125.82.44]:41019 "EHLO mail-wg0-f44.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752540AbaGQTYp (ORCPT ); Thu, 17 Jul 2014 15:24:45 -0400 Received: by mail-wg0-f44.google.com with SMTP id m15so2485516wgh.3 for ; Thu, 17 Jul 2014 12:24:44 -0700 (PDT) Content-Disposition: inline In-Reply-To: <20140717181222.GB23623@localhost.localdomain> Sender: netdev-owner@vger.kernel.org List-ID: On Thu, Jul 17, 2014 at 08:12:22PM +0200, Richard Cochran wrote: > > And what happens when the timestamp arrives *before* the PTP packet? It could also happen that the MAC driver re-orders the packets. Think about multiple hardware queues putting multicast UDP to one side, etc. Sure, maybe not a typical combination with the phyter, but still the driver should handle this. Thanks, Richard