Ns-3.9

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This page summarizes the ongoing release planning for ns-3.9. We are seeking a volunteer for release manager for the final release stages. Josh Pelkey and Tom Henderson are acting release managers at this time.

Tentative Release Schedule

1. May 3 -- ns-3.8 posted; ns-3.9 Open phase begins
2. June 16 -- Deadline for proposing major new features to be merged; begin the phase of small feature development and bug fixing
3. June 25 -- Deadline for merge of major features identified on the release page
4. July 20 -- Small feature development and bug fixing ends; Maintenance phase begins
5. August 6 -- Maintenance phase ends, code freeze phase begins; only P1 critical blockers and documentation

beyond this date

1. August 9 -- First release candidate (ns-3.9 RC1)
2. August 13 -- Documentation freeze (manuals/tutorials/Doxygen)
3. August 18 -- ns-3.9 posted, ns-3.10 phase begins

Release status

New feature merges

Already merged:

• Spectrum Modeling
• OFDM
• Bring rate representation in line with IEEE standard
• Enhancements to ns-2 trace reader (issue 473)
• Underwater Acoustic Network
• Rocketfuel topology reader
• WiFi patches for bugs 871, 881, 853
• Energy model

Likely for ns-3.10:

• MPLS
• DSDV
• fragmentation for IPv4: being worked by Vedran Miletic
• simple wireless models
• Jamming model
• Initial support for the 802.11g PHY
• Tcp refactoring

Minor feature merges

Merged:

• RecvIfIndex (issue 671)
• Generic sequence number class (issue 385)
• Issue 938: Add SO_BROADCAST socket option

Wait for ns-3.10:

• API for TOS bytes (issue 897) may wait for netfilter support
• Class name rename Scalar->Dimensionless (issue 445)
• NetAnim trace hooks for wireless (patch in preparation)

Bug fixing list

We will try to resolve the below issues for ns-3.9, by Fri. Aug 6.

• Core/bindings:
  • 956 Bindings failure in core (traced-value) with older gcc
  • 846/925, PeekData warnings http://www.nsnam.org/bugzilla/show_bug.cgi?id=846, http://www.nsnam.org/bugzilla/show_bug.cgi?id=925 (Craig has most recent patch for fixing this)
  • 826 Using uint64_t instead of Time in DcfManager

• AODV:
  • 879 http://www.nsnam.org/bugzilla/show_bug.cgi?id=879
  • 940 http://www.nsnam.org/bugzilla/show_bug.cgi?id=940
  • 964 AODV does not work with host addressed interfaces
  • 966 AODV originates new RREQ on each packet, when doesn't have valid route
  • apply randommness to transmission of RREQ
  • 971 remove carriage returns in AODV header Print methods

• WiFi:
  • 958 WiFi defaults http://www.nsnam.org/bugzilla/show_bug.cgi?id=958
  • 952 WifiMacQueue sender queue drops every 120 seconds of simulation, apparently for no particular reason
  • 968 Beacon generation does not use CSMA deferral
  • 941 Wifi Dcf attributes not reachable through configuration namespace
  • 555 DCF immediate access: http://www.nsnam.org/bugzilla/show_bug.cgi?id=555
  • 934 assertion failure in dcfmanager.h on heavy load
  • 842 BlockAck crasher
  • 799 Interference helper is too slow

• Point to Point:
  • 948 PointToPointNetDevice does not keep track of destination addresses
  • 949 Node::NonPromiscReceiveFromDevice reports a meaningless destination address to user callbacks
  • 950 PointToPointNetDevice says promisc support is not implemented but it is

• WiMAX:
  • 874 http://www.nsnam.org/bugzilla/show_bug.cgi?id=874
  • 953 http://www.nsnam.org/bugzilla/show_bug.cgi?id=953

• mobility (assigned to Phillip Sitbon):
  • 892 http://www.nsnam.org/bugzilla/show_bug.cgi?id=892
  • 893 http://www.nsnam.org/bugzilla/show_bug.cgi?id=893

• Realtime and emulation:
  • 959 Simulation never finishes when using RealtimeSimulatorImpl
  • 903 Tap bridge/Emu: http://www.nsnam.org/bugzilla/show_bug.cgi?id=903
  • 939 EmuNetDevice uses too much memory when reading packet bursts

• InternetStack
  • 969 No SocketList is present in UdpL4Protocol class
  • 942 ipv4-raw-socket-impl should listen more than one protocol
  • 911 IPv4 multicast forwarding not going to all output interfaces in route

• Other
  • 930 examples/topology-read/topology-example-sim.cc uses variable length array
  • 970 move UAN over to new directory structure

Documentation

Non-blockers, probably rolling into ns-3.10 release cycle

• 962 list of paths to reach objects contains bogus entries
• 938 missing Doxygen: http://www.nsnam.org/bugzilla/show_bug.cgi?id=938

Features that may slip

The following features are slipping to ns-3.10 or later:

• VANET mobility model (no reviews)
• TCP Vegas (blocked by lack of progress on TCP congestion control architecture)
• Chord/DHT (authors are planning to revise code based on comments)
• app store and build system refactoring
• remove ./waf --regression