Re: [storm] I-D Action: draft-ietf-storm-rdmap-ext-01.txt

<david.black@emc.com> Mon, 12 September 2011 18:10 UTC

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From: <david.black@emc.com>
To: <storm@ietf.org>
Date: Mon, 12 Sep 2011 14:11:57 -0400
Thread-Topic: [storm] I-D Action: draft-ietf-storm-rdmap-ext-01.txt
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Subject: Re: [storm] I-D Action: draft-ietf-storm-rdmap-ext-01.txt
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In looking at the changes in this draft from the -00 version, I noticed something that needs attention, although it was already present in the -00 version:

The term "naturally aligned" needs to be defined for buffer addresses, because failure to use a "naturally aligned" buffer address causes a "Catastrophic Error" at the recipient.  For this reason, there needs to be a tight specification of what the sender needs to do to avoid that error.  Specifying a boundary that is always "naturally aligned" (e.g., 64-bit) should suffice (and is probably superior to providing a way to figure this out on-the-wire).

Thanks,
--David

> -----Original Message-----
> From: storm-bounces@ietf.org [mailto:storm-bounces@ietf.org] On Behalf Of internet-drafts@ietf.org
> Sent: Monday, July 11, 2011 4:17 PM
> To: i-d-announce@ietf.org
> Cc: storm@ietf.org
> Subject: [storm] I-D Action: draft-ietf-storm-rdmap-ext-01.txt
> 
> A New Internet-Draft is available from the on-line Internet-Drafts directories. This draft is a work
> item of the STORage Maintenance Working Group of the IETF.
> 
> 	Title           : RDMA Protocol Extensions
> 	Author(s)       : Hemal Shah
>                           Felix Marti
>                           Wael Noureddine
>                           Asgeir Eiriksson
>                           Robert Sharp
> 	Filename        : draft-ietf-storm-rdmap-ext-01.txt
> 	Pages           : 30
> 	Date            : 2011-07-11
> 
>    This document specifies extensions to the IETF Remote Direct Memory
>    Access Protocol (RDMAP [RFC5040]). RDMAP provides read and write
>    services directly to applications and enables data to be transferred
>    directly into Upper Layer Protocol (ULP) Buffers without
>    intermediate data copies. The extensions specified in this document
>    provide the following capabilities and/or improvements: Atomic
>    Operations and Immediate Data.
> 
> 
> 
> 
> A URL for this Internet-Draft is:
> http://www.ietf.org/internet-drafts/draft-ietf-storm-rdmap-ext-01.txt
> 
> Internet-Drafts are also available by anonymous FTP at:
> ftp://ftp.ietf.org/internet-drafts/
> 
> This Internet-Draft can be retrieved at:
> ftp://ftp.ietf.org/internet-drafts/draft-ietf-storm-rdmap-ext-01.txt
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