linux-kernel - Re: [PATCH v4 10/27] IB/Verbs: Reform cm related part in IB-core cma/ucm

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Message-ID: <20150416174830.GB23263@obsidianresearch.com>
Date:	Thu, 16 Apr 2015 11:48:30 -0600
From:	Jason Gunthorpe <jgunthorpe@...idianresearch.com>
To:	Hal Rosenstock <hal@....mellanox.co.il>
Cc:	Michael Wang <yun.wang@...fitbricks.com>,
	Roland Dreier <roland@...nel.org>,
	Sean Hefty <sean.hefty@...el.com>,
	Hal Rosenstock <hal.rosenstock@...il.com>,
	linux-rdma@...r.kernel.org, linux-kernel@...r.kernel.org,
	Tom Tucker <tom@...ngridcomputing.com>,
	Steve Wise <swise@...ngridcomputing.com>,
	Hoang-Nam Nguyen <hnguyen@...ibm.com>,
	Christoph Raisch <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>,
	Ira Weiny <ira.weiny@...el.com>, Tom Talpey <tom@...pey.com>,
	Doug Ledford <dledford@...hat.com>
Subject: Re: [PATCH v4 10/27] IB/Verbs: Reform cm related part in IB-core
 cma/ucm

On Thu, Apr 16, 2015 at 01:38:07PM -0400, Hal Rosenstock wrote:
> On 4/16/2015 11:58 AM, Jason Gunthorpe wrote:
> > It also looks like hardwired 1 won't work on switch ports, so it is no-go.
> 
> AFAIK enhanced switch port 0 is not supported by CM/RDMA CM in the
> current code. There is no need for CM/RDMA CM on base switch port 0.

Hurm, yet another reason to have a proper device level test to capture
all this weirdness. I am surprised to hear this, actually.

Jason
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