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From: Michael Wang <yun.wang-EIkl63zCoXaH+58JC4qpiA@public.gmane.org>
To: Doug Ledford <dledford-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
Cc: "Hefty,
	Sean" <sean.hefty-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>,
	Roland Dreier <roland-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>,
	Hal Rosenstock
	<hal-LDSdmyG8hGV8YrgS2mwiifqBs+8SCbDb@public.gmane.org>,
	"linux-rdma-u79uwXL29TY76Z2rM5mHXA@public.gmane.org"
	<linux-rdma-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>,
	"linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org"
	<linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>,
	"linux-doc-u79uwXL29TY76Z2rM5mHXA@public.gmane.org"
	<linux-doc-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>,
	Or Gerlitz <ogerlitz-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>,
	"Weiny, Ira" <ira.weiny-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>,
	Jason Gunthorpe
	<jgunthorpe-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org>
Subject: Re: [PATCH RFC] Documentation/infiniband: Add docs for rdma-helpers
Date: Fri, 15 May 2015 17:02:57 +0200	[thread overview]
Message-ID: <55560AA1.9040901@profitbricks.com> (raw)
In-Reply-To: <1431700819.27722.15.camel-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>



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

> 
> 
--
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  parent reply	other threads:[~2015-05-15 15:02 UTC|newest]

Thread overview: 11+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-05-13 13:24 [PATCH RFC] Documentation/infiniband: Add docs for rdma-helpers Michael Wang
     [not found] ` <1431523472-10888-1-git-send-email-yun.wang-EIkl63zCoXaH+58JC4qpiA@public.gmane.org>
2015-05-13 15:11   ` Doug Ledford
2015-05-13 16:42     ` Hefty, Sean
2015-05-15  8:31       ` Michael Wang
     [not found]         ` <5555AEE5.9060503-EIkl63zCoXaH+58JC4qpiA@public.gmane.org>
2015-05-15 14:40           ` Doug Ledford
     [not found]             ` <1431700819.27722.15.camel-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2015-05-15 15:02               ` Michael Wang [this message]
     [not found]     ` <1431529914.2377.22.camel-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2015-05-15  8:12       ` Michael Wang
     [not found]         ` <5555AA7D.7080503-EIkl63zCoXaH+58JC4qpiA@public.gmane.org>
2015-05-15 14:27           ` Doug Ledford
     [not found]             ` <1431700060.27722.7.camel-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2015-05-15 14:38               ` Michael Wang
2015-05-13 15:59 ` Jason Gunthorpe
2015-05-15  7:51   ` Michael Wang

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