Technical Summary
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.
Working Group Summary
The extensions add Atomic Operations and Immediate Data to the RDMAP
Protocol. Other RDMA transport protocols define the functionality added by
these extensions leading to differences in RDMA applications and/or
Upper Layer Protocols. Removing these differences in the transport
protocols simplifies these applications and ULPs.
The STORM Working Group chartered this work in mid-2011, and while
no significant dissent was encountered, the document spent an extended
time in the WG owing to other WG priorities. When work resumed in 2013,
the document received substantial attention and review. Four update
cycles resulted in the final text. There was no controversy and consensus
was easily reached.
Document Quality
The document is of high quality and is well written. The authors represent
companies which deliver industry implementations of the RDDP protocol, and
discussion in the STORM WG by developers of upper layers and applications
indicated strong interest in using the extensions.
Personnel
Document Shepherd: Tom Talpey (storm WG co-chair, ttalpey@microsoft.com)
Responsible Area Director: Martin Stiemerling (Transport, mls.ietf@gmail.com)