Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933426AbbDXOqn (ORCPT ); Fri, 24 Apr 2015 10:46:43 -0400 Received: from p3plsmtpa09-01.prod.phx3.secureserver.net ([173.201.193.230]:60652 "EHLO p3plsmtpa09-01.prod.phx3.secureserver.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755403AbbDXOqi (ORCPT ); Fri, 24 Apr 2015 10:46:38 -0400 Message-ID: <553A574B.80208@talpey.com> Date: Fri, 24 Apr 2015 10:46:35 -0400 From: Tom Talpey User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:31.0) Gecko/20100101 Thunderbird/31.6.0 MIME-Version: 1.0 To: Michael Wang , Roland Dreier , Sean Hefty , Hal Rosenstock , linux-rdma@vger.kernel.org, linux-kernel@vger.kernel.org CC: Steve Wise , Jason Gunthorpe , Doug Ledford , Ira Weiny , Tom Tucker , Hoang-Nam Nguyen , Christoph Raisch , Mike Marciniszyn , Eli Cohen , Faisal Latif , Jack Morgenstein , Or Gerlitz , Haggai Eran Subject: Re: [PATCH v6 01/26] IB/Verbs: Implement new callback query_transport() References: <1429878230-11749-1-git-send-email-yun.wang@profitbricks.com> <1429878230-11749-2-git-send-email-yun.wang@profitbricks.com> <553A5362.3040808@talpey.com> <553A54BB.4080902@profitbricks.com> In-Reply-To: <553A54BB.4080902@profitbricks.com> Content-Type: text/plain; charset=windows-1252; format=flowed Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1751 Lines: 47 On 4/24/2015 10:35 AM, Michael Wang wrote: > > > On 04/24/2015 04:29 PM, Tom Talpey wrote: >> On 4/24/2015 8:23 AM, Michael Wang wrote: > [snip] >>> +static enum rdma_transport_type >>> +mlx5_ib_query_transport(struct ib_device *device, u8 port_num) >>> +{ >>> + return RDMA_TRANSPORT_IB; >>> +} >>> + >> >> >> Just noticed that mlx5 is not being coded as RoCE-capable like mlx4. >> The mlx5 driver is for the new ConnectX-4, which implements all three >> of IB, RoCE and RoCEv2, right? Are those last two not supported? > > I'm not sure about the details of mlx5, but according to the current > implementation, it's transport is IB without a link-layer callback, > which means it doesn't support IBoE... > > And there is no method to change the port link-layer type as mlx4 did. Hal, is that correct? From the Mellanox web: http://www.mellanox.com/related-docs/products/IB_Adapter_card_brochure_c_2_3.pdf "ConnectX-4 ConnectX-4 adapter cards with Virtual Protocol Interconnect (VPI), supporting EDR 100Gb/s InfiniBand and 100Gb/s Ethernet connectivity, provide the... "Virtual Protocol Interconnect VPI? flexibility enables any standard networking, clustering, storage, and management protocol to seamlessly operate over any converged network leveraging a consolidated software stack. Each port can operate on InfiniBand, Ethernet, or Data Center Bridging (DCB) fabrics, and supports IP over InfiniBand (IPoIB), Ethernet over InfiniBand (EoIB) and RDMA over Converged Ethernet (RoCE and RoCEv2). -- 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/