From mboxrd@z Thu Jan 1 00:00:00 1970 From: Eli Cohen Subject: Re: broken support for UC in rdma_cm Date: Mon, 15 Mar 2010 20:48:02 +0200 Message-ID: <20100315184802.GA355@mtldesk030.lab.mtl.com> References: <20100315111228.GC23358@mtldesk030.lab.mtl.com> <20100315134527.GA31210@mtldesk030.lab.mtl.com> <7E151C5823FF4048B15DCA15845BB0EB@amr.corp.intel.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Return-path: Content-Disposition: inline In-Reply-To: <7E151C5823FF4048B15DCA15845BB0EB-Zpru7NauK7drdx17CPfAsdBPR1lH4CV8@public.gmane.org> Sender: linux-rdma-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: Sean Hefty Cc: Roland Dreier , Linux RDMA list , ewg List-Id: linux-rdma@vger.kernel.org On Mon, Mar 15, 2010 at 08:38:00AM -0700, Sean Hefty wrote: > > This is really a new feature request, which I may not have time to address. It > depends on the scope of the changes that are needed. > > If both sides try using UC QPs, do you know what specific setting causes the > connection to fail? The actual failure is to modify the QP from init to rtr since the attribute mask sets IB_QP_MAX_DEST_RD_ATOMIC and IB_QP_MIN_RNR_TIMER which are invalid attributes in UC. The flags are set in cm_init_qp_rtr_attr() since the transport is IB_QPT_RC. -- 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