From mboxrd@z Thu Jan 1 00:00:00 1970 From: Pascal Mazon Subject: Re: TAP PMD does not work in 17.05 Date: Fri, 23 Jun 2017 13:51:13 +0200 Message-ID: <7a9efc06-dfc5-f264-d84b-9636cd698382@6wind.com> References: <2dbba168-bd9a-fa30-b72f-41b2b1015cf3@intel.com> Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 7bit To: Ferruh Yigit , Chillance Zen , dev@dpdk.org Return-path: Received: from mail-wr0-f180.google.com (mail-wr0-f180.google.com [209.85.128.180]) by dpdk.org (Postfix) with ESMTP id A7E7023B for ; Fri, 23 Jun 2017 13:51:38 +0200 (CEST) Received: by mail-wr0-f180.google.com with SMTP id k67so62110890wrc.2 for ; Fri, 23 Jun 2017 04:51:38 -0700 (PDT) In-Reply-To: <2dbba168-bd9a-fa30-b72f-41b2b1015cf3@intel.com> Content-Language: en-US List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org Sender: "dev" Hi Chillance, Ferruh, Can you give the complete command line you used, with output? (typically, are you using the remote feature) As Ferruh said, it may be that you don't have the module loaded. However in that case there should have been an error message earlier, like "Unable to create TAP interface". Hence the need for a complete trace. What's your kernel version? Best regards, Pascal On 06/23/2017 01:28 PM, Ferruh Yigit wrote: > On 6/22/2017 8:05 AM, Chillance Zen wrote: >> it always says something like this: >> >> PMD: tap1234: ioctl(35092) failed with error: No such device >> PMD: Add queue to TAP tap1234 for qid 0 >> PMD: tap1234: ioctl(35108) failed with error: Cannot assign requested >> address >> PMD: tun_alloc(tap1234, 0) failed >> PMD: tap1234: ioctl(35092) failed with error: No such device >> >> did any one ever meet this before? >> > Cc: Pascal > > I tried with latest code and 17.05 release and not observed the error. > > - Is this released 17.05 or any stable release version? > - Is tun kernel module inserted?