linux-kernel - Re: [PATCH v6 02/26] IB/Verbs: Implement raw management helpers

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Message-ID: <553DE837.6010800@profitbricks.com>
Date:	Mon, 27 Apr 2015 09:41:43 +0200
From:	Michael Wang <yun.wang@...fitbricks.com>
To:	Jason Gunthorpe <jgunthorpe@...idianresearch.com>,
	Liran Liss <liranl@...lanox.com>
CC:	Roland Dreier <roland@...nel.org>,
	Sean Hefty <sean.hefty@...el.com>,
	Hal Rosenstock <hal@....mellanox.co.il>,
	"linux-rdma@...r.kernel.org" <linux-rdma@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Steve Wise <swise@...ngridcomputing.com>,
	Tom Talpey <tom@...pey.com>,
	Doug Ledford <dledford@...hat.com>,
	Ira Weiny <ira.weiny@...el.com>,
	Tom Tucker <tom@...ngridcomputing.com>,
	Hoang-Nam Nguyen <hnguyen@...ibm.com>,
	"raisch@...ibm.com" <raisch@...ibm.com>,
	Mike Marciniszyn <infinipath@...el.com>,
	Eli Cohen <eli@...lanox.com>,
	Faisal Latif <faisal.latif@...el.com>,
	Jack Morgenstein <jackm@....mellanox.co.il>,
	Or Gerlitz <ogerlitz@...lanox.com>,
	Haggai Eran <haggaie@...lanox.com>
Subject: Re: [PATCH v6 02/26] IB/Verbs: Implement raw management helpers



On 04/24/2015 06:29 PM, Jason Gunthorpe wrote:
> On Fri, Apr 24, 2015 at 03:15:54PM +0000, Liran Liss wrote:
>>> From: linux-rdma-owner@...r.kernel.org [mailto:linux-rdma-
> 
>>> +static inline int rdma_tech_iboe(struct ib_device *device, u8 port_num)
>>> +{
>>> +	return device->query_transport(device, port_num)
>>> +			== RDMA_TRANSPORT_IBOE;
>>
>> Remove RDMA_TRANSPORT_IBOE.
>> In the current code, the test should be: (IB transport && Ethernet link layer).
> 
> No, if this rmda_tech stuff is to reflect the specification the port
> implements, then RoCEE is a valid specification (IBA Annex A16), as it
> RoCEEv2 (A17).
> 
> This patch set is trying to drop then link layer concept entirely.

I think a new enum on protocol could help solve the conflict in here, we
can still get rid of the link layer meanwhile leave the legacy
transport type alone :-)

Regards,
Michael Wang

> 
> Jason
> 
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