RPC-over-RDMA Version 2 Protocol
draft-cel-nfsv4-rpcrdma-version-two-08

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Network File System Version 4                              C. Lever, Ed.
Internet-Draft                                                    Oracle
Intended status: Standards Track                               D. Noveck
Expires: May 12, 2019                                             NetApp
                                                        November 8, 2018

                    RPC-over-RDMA Version 2 Protocol
                 draft-cel-nfsv4-rpcrdma-version-two-08

Abstract

   This document specifies a new version of the transport protocol that
   conveys Remote Procedure Call (RPC) messages on physical transports
   capable of Remote Direct Memory Access (RDMA).  The new version of
   this protocol is extensible.

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Lever & Noveck            Expires May 12, 2019                  [Page 1]
Internet-Draft          RDMA Transport for RPC V2          November 2018

   This document may contain material from IETF Documents or IETF
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Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   3
   2.  Requirements Language . . . . . . . . . . . . . . . . . . . .   4
   3.  RPC-over-RDMA Version 2 Headers and Chunks  . . . . . . . . .   5
     3.1.  rpcrdma_common: Common Transport Header Prefix  . . . . .   5
     3.2.  rpcrdma2_hdr_prefix: Version 2 Transport Header Prefix  .   6
     3.3.  rpcrdma2_chunk_lists: Describe External Data Payload  . .   7
   4.  Transport Properties  . . . . . . . . . . . . . . . . . . . .   8
     4.1.  Transport Properties Model  . . . . . . . . . . . . . . .   8
     4.2.  Current Transport Properties  . . . . . . . . . . . . . .  10
       4.2.1.  Receive Buffer Size . . . . . . . . . . . . . . . . .  11
       4.2.2.  Reverse Request Support . . . . . . . . . . . . . . .  12
   5.  RPC-over-RDMA Version 2 Transport Messages  . . . . . . . . .  13
     5.1.  Overall Transport Message Structure . . . . . . . . . . .  13
     5.2.  Transport Header Types  . . . . . . . . . . . . . . . . .  13
     5.3.  Header Types Defined in RPC-over-RDMA version 2 . . . . .  14
       5.3.1.  RDMA2_MSG: Convey RPC Message Inline  . . . . . . . .  15
       5.3.2.  RDMA2_NOMSG: Convey External RPC Message  . . . . . .  15
       5.3.3.  RDMA2_ERROR: Report Transport Error . . . . . . . . .  15
       5.3.4.  RDMA2_CONNPROP: Advertise Transport Properties  . . .  18
   6.  XDR Protocol Definition . . . . . . . . . . . . . . . . . . .  19
     6.1.  Code Component License  . . . . . . . . . . . . . . . . .  20
     6.2.  Extraction and Use of XDR Definitions . . . . . . . . . .  22
     6.3.  XDR Definition for RPC-over-RDMA Version 2 Core
           Structures  . . . . . . . . . . . . . . . . . . . . . . .  24
     6.4.  XDR Definition for RPC-over-RDMA Version 2 Base Header
           Types . . . . . . . . . . . . . . . . . . . . . . . . . .  26
     6.5.  Use of the XDR Description Files  . . . . . . . . . . . .  27
   7.  Protocol Version Negotiation  . . . . . . . . . . . . . . . .  29
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