From mboxrd@z Thu Jan 1 00:00:00 1970 From: Evgeniy Polyakov Subject: Re: data received but not detected Date: Fri, 20 Jun 2008 22:23:34 +0400 Message-ID: <20080620182333.GA9342@2ka.mipt.ru> References: <48583B37.5070708@candelatech.com> <1213743506.5771.220.camel@localhost.localdomain> <20080618062857.GA3598@2ka.mipt.ru> <1213917029.9245.86.camel@localhost.localdomain> <20080620060219.GA22784@2ka.mipt.ru> <1213981859.9245.133.camel@localhost.localdomain> <20080620172513.GA16673@2ka.mipt.ru> <1213983664.9245.150.camel@localhost.localdomain> <20080620175440.GA12197@2ka.mipt.ru> <1213985826.9245.169.camel@localhost.localdomain> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Cc: netdev@vger.kernel.org To: Travis Stratman Return-path: Received: from relay.2ka.mipt.ru ([194.85.82.65]:41423 "EHLO 2ka.mipt.ru" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750956AbYFTSXw (ORCPT ); Fri, 20 Jun 2008 14:23:52 -0400 Content-Disposition: inline In-Reply-To: <1213985826.9245.169.camel@localhost.localdomain> Sender: netdev-owner@vger.kernel.org List-ID: On Fri, Jun 20, 2008 at 01:17:06PM -0500, Travis Stratman (tstratman@emacinc.com) wrote: > Let me clarify this again... I see the packet being sent at the expected > time from the sender on the tcpdump. The packet does not show up in > tcpdump or in the application on the receive side. When some other data > is received by the receiver (i.e. ARP), the missing packet shows up in > the tcpdump and in the application at the same time. So the delay shows > up in the tcpdump as well. It seems to me that everything is pointing to > the packet being in the DMA buffer but the controller driver not knowing > anything about it. Argh. Ok, then please check that napi polling is called and rx interrupt happen for the driver. -- Evgeniy Polyakov