From mboxrd@z Thu Jan 1 00:00:00 1970 From: Thomas Martitz Subject: Re: Trying to implement secondary loopback Date: Fri, 15 Mar 2013 15:20:03 +0100 Message-ID: <51432E13.5060003@hhi.fraunhofer.de> References: <513F1A17.1000809@hhi.fraunhofer.de> <3D7E565A361FB844A410A5EFCDD7BA4002ECF5@MXSRV3.fe.hhi.de> <87r4jjav00.fsf@xmission.com> <3D7E565A361FB844A410A5EFCDD7BA4002EF11@MXSRV3.fe.hhi.de> <878v5r9es7.fsf@xmission.com> <5142CE23.9070804@hhi.fraunhofer.de> <87ip4t598t.fsf@xmission.com> <514326FF.6020205@hhi.fraunhofer.de> <51432B72.20408@hhi.fraunhofer.de> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Cc: "Eric W. Biederman" , "netdev@vger.kernel.org" , "davem@davemloft.net" , "edumazet@google.com" , "herbert@gondor.apana.org.au" To: richard -rw- weinberger Return-path: Received: from mail.HHI.FRAUNHOFER.DE ([193.174.67.45]:59167 "EHLO mailgw.hhi.fraunhofer.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753867Ab3COOT7 (ORCPT ); Fri, 15 Mar 2013 10:19:59 -0400 In-Reply-To: Sender: netdev-owner@vger.kernel.org List-ID: Am 15.03.2013 15:16, schrieb richard -rw- weinberger: > On Fri, Mar 15, 2013 at 3:08 PM, Thomas Martitz > wrote: >> What's wrong with loopback? It's the simplest method to get basic >> bidirectional data transfer going. >> >> Can you suggest an alternative approach? > > The real question is, why do you need a second one? > I assume your driver (for the non-existing hardware) is a ethernet driver, > and now you're looking for a way to test your shiny new ethX device, correct? > Yes. But that's only the first step. Once I have the basic ethX device working I want to make sure the PCIe data transfer is working (with good performance), ideally using the very same test application in user space. Best regards. ----- visit us at OFC 2013 / March 19-21 / Anaheim Convention Center, CA, USA / booth 11807 NABSHOW 2013 / April 8-11 / Las Vegas Convention Center, Nevada, USA / booth C7843 www.hhi.fraunhofer.de/events