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SCTP Socket API Extensions for Concurrent Multipath Transfer
draft-dreibholz-tsvwg-sctpsocket-multipath-07

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Last updated: 2014-01-04
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Network Working Group                                       T. Dreibholz
Internet-Draft                                Simula Research Laboratory
Intended status: Experimental                                   M. Becke
Expires: July 9, 2014                                          H. Adhari
                                            University of Duisburg-Essen
                                                         January 5, 2014

      SCTP Socket API Extensions for Concurrent Multipath Transfer
           draft-dreibholz-tsvwg-sctpsocket-multipath-07.txt

Abstract

   This document describes extensions to the SCTP sockets API for
   configuring the CMT-SCTP and CMT/RP-SCTP extensions.

Status of This Memo

   This Internet-Draft is submitted in full conformance with the
   provisions of BCP 78 and BCP 79.

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   This Internet-Draft will expire on July 9, 2014.

Copyright Notice

   Copyright (c) 2014 IETF Trust and the persons identified as the
   document authors.  All rights reserved.

   This document is subject to BCP 78 and the IETF Trust's Legal
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   described in the Simplified BSD License.

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Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
   2.  Concurrent Multipath Transfer and Resource Pooling
       Activation/Deactivation (SCTP_CMT_ON_OFF) . . . . . . . . . .   2
   3.  Testbed Platform  . . . . . . . . . . . . . . . . . . . . . .   3
   4.  Security Considerations . . . . . . . . . . . . . . . . . . .   3
   5.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .   3
   6.  Acknowledgments . . . . . . . . . . . . . . . . . . . . . . .   3
   7.  References  . . . . . . . . . . . . . . . . . . . . . . . . .   3
     7.1.  Normative References  . . . . . . . . . . . . . . . . . .   3
     7.2.  Informative References  . . . . . . . . . . . . . . . . .   4
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .   5

1.  Introduction

   This draft describes extensions to the SCTP sockets API (see
   [RFC6458], [RFC4960]) which allow an application to configure the
   behaviour of the Concurrent Multipath Transfer (CMT) extensions CMT-
   SCTP, CMT/RPv1-SCTP, CMT/RPv2-SCTP and MPTCP-like (see
   [I-D.tuexen-tsvwg-sctp-multipath], [Globecom2010], [PAMS2012],
   [Dre2012], [PAMS2011], [SoftCOM2011], [ConTEL2011], [AINA2010],
   [IAS2006]).

2.  Concurrent Multipath Transfer and Resource Pooling Activation/
    Deactivation (SCTP_CMT_ON_OFF)

   This socket option activates or deactivates CMT and sets the
   corresponding Resource Pooling variant to be applied.  The
   sctp_assoc_value structure is used to specify the association for
   which the CMT state should be changed and the new CMT state.

   Definition of the sctp_assoc_value structure:

   struct sctp_assoc_value {
      sctp_assoc_t assoc_id;
      uint32_t     assoc_value;
   };

   assoc_id:  Holds the identifier for the association of which the CMT
      state should be changed.  Ignored for one-to-one style sockets.

   assoc_value:

      0  Turns CMT off.

      1  Turns plain CMT-SCTP on.  No Resource Pooling is applied.

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      2  Turns CMT-SCTP on.  CMT/RPv1 Resource Pooling as defined in
         [AINA2010] is applied.

      3  Turns CMT-SCTP on.  CMT/RPv2 Resource Pooling as defined in
         [ConTEL2011] is applied.

      4  Turns CMT-SCTP on.  MPTCP-like Resource Pooling as defined in
         [SoftCOM2011], [ConTEL2011], [PAMS2012] is applied.

3.  Testbed Platform

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