Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S934658AbbEOPDF (ORCPT ); Fri, 15 May 2015 11:03:05 -0400 Received: from mail-wg0-f48.google.com ([74.125.82.48]:36176 "EHLO mail-wg0-f48.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932377AbbEOPDA (ORCPT ); Fri, 15 May 2015 11:03:00 -0400 Message-ID: <55560AA1.9040901@profitbricks.com> Date: Fri, 15 May 2015 17:02:57 +0200 From: Michael Wang User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:31.0) Gecko/20100101 Thunderbird/31.6.0 MIME-Version: 1.0 To: Doug Ledford CC: "Hefty, Sean" , Roland Dreier , Hal Rosenstock , "linux-rdma@vger.kernel.org" , "linux-kernel@vger.kernel.org" , "linux-doc@vger.kernel.org" , Or Gerlitz , "Weiny, Ira" , Jason Gunthorpe Subject: Re: [PATCH RFC] Documentation/infiniband: Add docs for rdma-helpers References: <1431523472-10888-1-git-send-email-yun.wang@profitbricks.com> <1431529914.2377.22.camel@redhat.com> <1828884A29C6694DAF28B7E6B8A82373A8FDA105@ORSMSX109.amr.corp.intel.com> <5555AEE5.9060503@profitbricks.com> <1431700819.27722.15.camel@redhat.com> In-Reply-To: <1431700819.27722.15.camel@redhat.com> Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1320 Lines: 35 On 05/15/2015 04:40 PM, Doug Ledford wrote: [snip] > > The test itself doesn't mean that. It means we need a RoCE address > (it's true when transport is IB and link layer is Ethernet). That we > *use* it during connectionless communication because we have to generate > our own address vector for the packet while during connected queue pair > use the address vector is created by the card using the queue pair > information is just the circumstance of its use. And even though a > disconnected queue pair isn't solidly connected to a remote endpoint, it > is solidly bound to an adapter that requires either an IB or Ethernet > address family. Maybe this to resolve your issue with the wording: Thanks for the explain :-) The term 'connectionless' still sounds a little strange to me when it's just means no HW support on creating address vector, but I can understand the concept. > > This helper is true when the address family of this queue pair is of the > Ethernet (RoCE) variety. Sounds good, will be merged in next version :-) Regards, Michael Wang > > -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/