From mboxrd@z Thu Jan 1 00:00:00 1970 From: Pradeep Satyanarayana Subject: rsockets with RoCE Date: Wed, 27 Jun 2012 16:24:59 -0700 Message-ID: <4FEB964B.5060303@linux.vnet.ibm.com> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Return-path: Sender: linux-rdma-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: "Hefty, Sean" , "linux-rdma-u79uwXL29TY76Z2rM5mHXA@public.gmane.org" List-Id: linux-rdma@vger.kernel.org Hi Sean, I attempted to use rsockets with ConnectX-EN adapters and the client receives a "Connection refused" message. I debugged this a bit further and see that the client is actually receiving an IB_CM_REJ_RECEIVED with reason being 28 i.e. "Consumer Reject". Could this be because of the difference in how GIDs are obtained in the case of RoCE? Have you attempted rsockets on RoCE at all? Incidentally this problem also highlights another issue we have encountered previously. The only way to debug issues like this in RDMA CM is to modify the kernel module. Currently there is no way we can turn on (and off) debug and get insights into the connection set up process. Are you open to considering patches to enhance debug with RDMA CM, particularly during the address resolution and connection setup process. That way it should not impact the performance during data transfer. Thanks Pradeep -- To unsubscribe from this list: send the line "unsubscribe linux-rdma" in the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org More majordomo info at http://vger.kernel.org/majordomo-info.html