From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mx0a-00103a01.pphosted.com (mx0a-00103a01.pphosted.com [67.231.144.234]) by dpdk.org (Postfix) with ESMTP id DF2381396 for ; Fri, 2 Sep 2016 00:51:12 +0200 (CEST) Received: from pps.filterd (m0000419.ppops.net [127.0.0.1]) by mx0a-00103a01.pphosted.com (8.16.0.17/8.16.0.17) with SMTP id u81Mmm0g021897 for ; Thu, 1 Sep 2016 18:51:12 -0400 Received: from vawvcgsie2k1302.ciena.com (lin1-118-36-36.ciena.com [63.118.36.36]) by mx0a-00103a01.pphosted.com with ESMTP id 256u16rwbw-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-SHA384 bits=256 verify=NOT) for ; Thu, 01 Sep 2016 18:51:11 -0400 Received: from MDWVEXCHHT02.ciena.com (10.4.156.176) by VAWVCGSIE2K1302.ciena.com (10.4.62.16) with Microsoft SMTP Server (TLS) id 15.0.1104.5; Thu, 1 Sep 2016 18:51:09 -0400 Received: from ONWVEXCHHT03.ciena.com (10.128.6.43) by MDWVEXCHHT02.ciena.com (10.4.156.176) with Microsoft SMTP Server (TLS) id 8.3.389.2; Thu, 1 Sep 2016 18:51:08 -0400 Received: from ONWVEXCHMB03.ciena.com ([::1]) by ONWVEXCHHT03.ciena.com ([::1]) with mapi; Thu, 1 Sep 2016 18:51:08 -0400 From: "Coulson, Ken" To: "dev@dpdk.org" Date: Thu, 1 Sep 2016 18:51:46 -0400 Thread-Topic: problem with continual link status down events Thread-Index: AdIEo1Oa1s2wAKXJQwesIVkM215wFQ== Message-ID: Accept-Language: en-US, en-CA Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: user-agent: Microsoft-MacOutlook/14.6.6.160626 acceptlanguage: en-US, en-CA X-TM-AS-Product-Ver: SMEX-10.0.0.1412-7.000.1014-22550.003 X-TM-AS-Result: No--8.254100-0.000000-31 X-TM-AS-User-Approved-Sender: Yes X-TM-AS-User-Blocked-Sender: No MIME-Version: 1.0 X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10432:, , definitions=2016-09-01_09:, , signatures=0 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 priorityscore=1501 suspectscore=0 malwarescore=0 phishscore=0 bulkscore=0 spamscore=0 clxscore=1011 impostorscore=0 lowpriorityscore=0 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1604210000 definitions=main-1609010268 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable X-Content-Filtered-By: Mailman/MimeDel 2.1.15 Subject: [dpdk-dev] problem with continual link status down events X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: patches and discussions about DPDK List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 01 Sep 2016 22:51:13 -0000 I am seeing a problem with link state change using interrupts using a Broad= well with on-board 10G-BaseT LAN ports (0x15AD) running DPDK 16.04. There is an= Ixia connected to the two 10G ports and both are initially up. One of the connections is brought down via the Ixia and the software gets a single dow= n event through the callback installed with rte_eth_dev_callback_register() a= nd enabling lsc in the rte_eth_conf structure. The connection is then re-enab= led and a single up event is received as expected. However on the other 10G po= rt when the connection is brought down sporadic down events are continually received at a frequency ranging from about 1 seconds to 20 seconds. I do not see the problem with the two 1G ports. The problem has been seen on two different Broadwell boxes. I'm looking for information from others that have seen anything like this p= roblem. Ken Coulson Software Engineer with Ciena