From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <martin.weiser@allegro-packets.com>
Received: from smtprelay01.ispgateway.de (smtprelay01.ispgateway.de
 [80.67.31.35]) by dpdk.org (Postfix) with ESMTP id 9F13E926B
 for <dev@dpdk.org>; Wed, 21 Oct 2015 10:38:23 +0200 (CEST)
Received: from [87.172.138.62] (helo=nb-martin.allegro)
 by smtprelay01.ispgateway.de with esmtpsa (TLSv1.2:DHE-RSA-AES128-SHA:128)
 (Exim 4.84) (envelope-from <martin.weiser@allegro-packets.com>)
 id 1Zooud-0000jc-8u for dev@dpdk.org; Wed, 21 Oct 2015 10:38:23 +0200
From: Martin Weiser <martin.weiser@allegro-packets.com>
X-Enigmail-Draft-Status: N1110
To: dev@dpdk.org
Message-ID: <56274EFE.5040706@allegro-packets.com>
Date: Wed, 21 Oct 2015 10:38:22 +0200
User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.11; rv:38.0)
 Gecko/20100101 Thunderbird/38.2.0
MIME-Version: 1.0
Content-Type: text/plain; charset=utf-8
Content-Transfer-Encoding: quoted-printable
X-Df-Sender: bWFydGluLndlaXNlckBhbGxlZ3JvLXBhY2tldHMuY29t
Subject: [dpdk-dev] ixgbe: ierrors counter spuriously increasing in DPDK 2.1
X-BeenThere: dev@dpdk.org
X-Mailman-Version: 2.1.15
Precedence: list
List-Id: patches and discussions about DPDK <dev.dpdk.org>
List-Unsubscribe: <http://dpdk.org/ml/options/dev>,
 <mailto:dev-request@dpdk.org?subject=unsubscribe>
List-Archive: <http://dpdk.org/ml/archives/dev/>
List-Post: <mailto:dev@dpdk.org>
List-Help: <mailto:dev-request@dpdk.org?subject=help>
List-Subscribe: <http://dpdk.org/ml/listinfo/dev>,
 <mailto:dev-request@dpdk.org?subject=subscribe>
X-List-Received-Date: Wed, 21 Oct 2015 08:38:23 -0000

Hi,

with DPDK 2.1 we are seeing the ierrors counter increasing for 82599ES
ports without reason. Even directly after starting test-pmd the error
counter immediately is 1 without even a single packet being sent to the
device:

=2E/testpmd -c 0xfe -n 4 -- --portmask 0x3 --interactive
=2E..
testpmd> show port stats all

  ######################## NIC statistics for port 0  ###################=
#####
  RX-packets: 0          RX-missed: 0          RX-bytes:  0
  RX-badcrc:  0          RX-badlen: 0          RX-errors: 1
  RX-nombuf:  0
  TX-packets: 0          TX-errors: 0          TX-bytes:  0
  #######################################################################=
#####

  ######################## NIC statistics for port 1  ###################=
#####
  RX-packets: 0          RX-missed: 0          RX-bytes:  0
  RX-badcrc:  0          RX-badlen: 0          RX-errors: 1
  RX-nombuf:  0
  TX-packets: 0          TX-errors: 0          TX-bytes:  0
  #######################################################################=
#####


When packet forwarding is started the ports perform normally and
properly forward all packets but a huge number of ierrors is counted:

testpmd> start
=2E..
testpmd> show port stats all

  ######################## NIC statistics for port 0  ###################=
#####
  RX-packets: 9011857    RX-missed: 0          RX-bytes:  5020932992
  RX-badcrc:  0          RX-badlen: 0          RX-errors: 9011753
  RX-nombuf:  0
  TX-packets: 9026250    TX-errors: 0          TX-bytes:  2922375542
  #######################################################################=
#####

  ######################## NIC statistics for port 1  ###################=
#####
  RX-packets: 9026250    RX-missed: 0          RX-bytes:  2922375542
  RX-badcrc:  0          RX-badlen: 0          RX-errors: 9026138
  RX-nombuf:  0
  TX-packets: 9011857    TX-errors: 0          TX-bytes:  5020932992
  #######################################################################=
#####


When running the exact same test with DPDK version 2.0 no ierrors are
reported.
Is anyone else seeing strange ierrors being reported for Intel Niantic
cards with DPDK 2.1?

Best regards,
Martin