From mboxrd@z Thu Jan 1 00:00:00 1970 From: Hal Rosenstock Subject: Re: Tutorials/howto to modify exiting tcp/ip app for rdma Date: Thu, 27 Nov 2014 11:58:50 -0500 Message-ID: <5477584A.9050605@dev.mellanox.co.il> References: <5477298A.6060605@dev.mellanox.co.il> <54774122.1020502@dev.mellanox.co.il> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <54774122.1020502-LDSdmyG8hGV8YrgS2mwiifqBs+8SCbDb@public.gmane.org> Sender: linux-rdma-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: Sagi Grimberg Cc: Vasiliy Tolstov , linux-rdma List-Id: linux-rdma@vger.kernel.org On 11/27/2014 10:20 AM, Sagi Grimberg wrote: > On 11/27/2014 4:39 PM, Vasiliy Tolstov wrote: >> 2014-11-27 16:39 GMT+03:00 Sagi Grimberg : >>> You can keep doing IP address resolution using rdma_cm. >>> >>> You can see perftest examples in >>> git://flatbed.openfabrics.org/~grockah/perftest.git >>> Or, >>> librdmacm's rping in git://flatbed.openfabrics.org/~shefty/librdmacm.git >> >> >> Thanks! But if don't have ipoib connection why i need ip address ?=) >> > > My understanding was that you want to _add_ support for RDMA to a > working tcp/ip application, the natural thing is using rdma_cm. > > If you want to replace IP address resolution you need to start > communicating with the SM. rsockets now supports AF_IB address family (assuming kernel does too - 3.11 or beyond) but you need the path record to the destination IB address (GID) to make the connection so that involves an SA query or the equivalent... -- Hal > > srptools is a nice example for that: > git://flatbed.openfabrics.org/~bvanassche/srptools.git/.git > > Sagi. > -- > 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 > -- 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