linux-kernel - Re: [PATCH v2 01/17] IB/Verbs: Implement new callback query

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Date:	Mon, 13 Apr 2015 09:40:15 +0200
From:	Michael Wang <yun.wang@...fitbricks.com>
To:	Jason Gunthorpe <jgunthorpe@...idianresearch.com>,
	Doug Ledford <dledford@...hat.com>
CC:	"ira.weiny" <ira.weiny@...el.com>,
	Roland Dreier <roland@...nel.org>,
	Sean Hefty <sean.hefty@...el.com>, linux-rdma@...r.kernel.org,
	linux-kernel@...r.kernel.org, linux-nfs@...r.kernel.org,
	netdev@...r.kernel.org, Hal Rosenstock <hal.rosenstock@...il.com>,
	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>,
	Upinder Malhi <umalhi@...co.com>,
	Trond Myklebust <trond.myklebust@...marydata.com>,
	"J. Bruce Fields" <bfields@...ldses.org>,
	"David S. Miller" <davem@...emloft.net>,
	PJ Waskiewicz <pj.waskiewicz@...idfire.com>,
	Tatyana Nikolova <Tatyana.E.Nikolova@...el.com>,
	Or Gerlitz <ogerlitz@...lanox.com>,
	Jack Morgenstein <jackm@....mellanox.co.il>,
	Haggai Eran <haggaie@...lanox.com>,
	Ilya Nelkenbaum <ilyan@...lanox.com>,
	Yann Droneaud <ydroneaud@...eya.com>,
	Bart Van Assche <bvanassche@....org>,
	Shachar Raindel <raindel@...lanox.com>,
	Sagi Grimberg <sagig@...lanox.com>,
	Devesh Sharma <devesh.sharma@...lex.com>,
	Matan Barak <matanb@...lanox.com>,
	Moni Shoua <monis@...lanox.com>, Jiri Kosina <jkosina@...e.cz>,
	Selvin Xavier <selvin.xavier@...lex.com>,
	Mitesh Ahuja <mitesh.ahuja@...lex.com>,
	Li RongQing <roy.qing.li@...il.com>,
	Rasmus Villemoes <linux@...musvillemoes.dk>,
	Alex Estrin <alex.estrin@...el.com>,
	Eric Dumazet <edumazet@...gle.com>,
	Erez Shitrit <erezsh@...lanox.com>,
	Tom Gundersen <teg@...m.no>,
	Chuck Lever <chuck.lever@...cle.com>
Subject: Re: [PATCH v2 01/17] IB/Verbs: Implement new callback query_transport()
 for each HW

On 04/10/2015 07:36 PM, Jason Gunthorpe wrote:
> On Fri, Apr 10, 2015 at 01:10:43PM -0400, Doug Ledford wrote:
> 
>> documented.  I get why you link the address variant, because it pops out
>> all the things that are special about IBoE addressing and calls out that
>> the issues need to be handled.  However, saying requires_iboe_addr(),
>> while foreshadowing the work that needs done, doesn't actually document
>> the work that needs done.  Whether we call is dev_is_iboe() or
>> requires_iboe_addr(), it would be good if the documentation spelled out
>> those specific requirements for reference sake.
> 
> My deep hope for this, was that the test 'requires_iboe_addr' or
> whatever we call it would have a *really good* kdoc.
> 
> List all the ways iboe_addr's work, how they differ from IB addresses,
> refer to the specs people should read to understand it, etc.
> 
> The patches don't do this, and maybe Michael is the wrong person to
> fill that in, but we can get it done..

That's exactly what I'm thinking ;-)

At first I'm just trying to save us some code but now it's becoming
a topic far above that purpose, I'd like to help commit whatever we already
settled and pass the internal reforming works to experts like you guys
, implement the bitmask stuff ;-)

And I can still help on review and may be testing with mlx4 if later I
got the access.

> 
> Jason
> 
> BTW: Michael, next time you post the series, please trim the CC
> list...

Thanks for the remind, I'll do trim in v3 :-)

Regards,
Michael Wang

> 
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