Ns-3.26: Difference between revisions

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This page summarizes the release planning for ns-3.26 (originally planned for June 2016; rescheduled to early August 2016).  The ns-3 release process is listed [http://www.nsnam.org/developers/release-process/ here] and [[Release Process | here]].
This page summarizes the release planning for ns-3.26 (originally planned for June 2016; rescheduled to early September 2016).  The ns-3 release process is listed [http://www.nsnam.org/developers/release-process/ here] and [[Release Process | here]].


This page has been recently revised and some original goals for ns-3.26 have slipped to a new [[ns-3.27]] page.
This page has been recently revised and some original goals for ns-3.26 have slipped to a new [[ns-3.27]] page.
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The revised (again) schedule is as follows:
The revised (again) schedule is as follows:


* August 15-16:  Merge any remaining new features
* code freeze during week of September 5
* August 22:  Code freeze
* release shortly afterwards
* soon thereafter, make release


= Remaining new features =
= Remaining issues =


Maintainers are working on finalizing the following new features:
* aodv: merge patch to 2123 (Tommaso)
 
* applications:  merge patch to 2474 (Stefano)
== Wifi ==
* core:  merge patch to 2459 (Peter)
 
* core:  merge DES metrics patch (Peter)
* RRPAA rate control (https://codereview.appspot.com/254440043/) (Matias Richart)
* core: resolve attribute errors/attribute spaces/attribute deprecation (issues 2447, 2344, 2149) (Tom and Peter)
** Status:  finalize review comments/questions
* network:  investigate recent packet metadata bugs (2407, 2415), fix if solution found shortly (Tom)
 
* mobility:  check and merge patch to 2390 (on waypoint mobility (Tom)
== traffic-control module ==
* wifi: merge patch to 2306 and update AODV regression traces (Tom)
 
* wifi:  investigate DCF assert bug 2477; will fix if solution found shortly (Tom)
Stefano Avallone (stavallo@unina.it) is leading ns-3.26 development for traffic control, and has the following remaining goals:
 
* Add support for Byte Queue Limits (see bug 2428)
* Add support for fq-codel (see bug 2430)
 
== ns-3 core ==
 
* Support DES metrics (https://codereview.appspot.com/301230043/) (Peter Barnes)
 
== TCP ==
 
* Hamilton TCP (http://mailman.isi.edu/pipermail/ns-developers/2016-April/013541.html) (Natale Patriciello)
 
TCP SACK (https://codereview.appspot.com/299130043/) is proposed to be held for merging to ns-3-dev after ns-3.26 is released.
 
= Bug fixing =
 
These will be largely handled in the bug tracker and we will handle as many as possible in the time remaining.
 
== ns-3 core ==
 
For ns-3.26, only maintenance on core (dealing with bug reports/open issues) is planned.
 
Tom Henderson would like to finish off:
* Attribute/TraceSource deprecation (bugs 2149 and 2344)
* refactor chi-squared tests for random number generation (bug 1927)
* Matt's test.py contributions (bug 2291)
* bug 2086 on attribute accessibility
* bug 1962 on random variable stream GetStream() returning -1
* <s>bug 1939 on aggregating same object to two nodes</s> <i>Merged</i>
* bug 1604 on Config::GetDefault
 
Peter Barnes intends to continue working on:
* Bug 938 - missing Doxygen in ns-3
* Bug 1764 - can't compile without pthread
* Bug 1972 - CommandLine duplicate argument handling
 
== network module ==
 
There are a large number of patches pending on the Packet classes.  This proposal was made recently on ns-developers:
 
* <s>we apply the patch in bug 2308 (LTE) if the LTE maintainers approve it</s> <i>Update:  Patch to 2308 was applied, but issues were later found and the bug is reopened</i>
* we apply the patch in bug 2069 (fix size of m_used variable)
* we open a 'feature request/PATCH WANTED' for removal of ByteTags
* we study the implications of the expansion of tag size recently (bug 2361) and either update documentation or change the code
* we add a 'best current practice' note to the documentation, on tag usage, as suggested by Tommaso.  (perhaps modifying this section:
  https://www.nsnam.org/docs/release/3.25/models/html/packets.html#adding-and-removing-tags)  
* consider Alex's proposal of some API changes to the tags class: https://www.nsnam.org/bugzilla/show_bug.cgi?id=1383
* consider to finish patch for serializing/deserializing tags (bug 582)
 
In addition, the following maintenance/bugs should be dealt with:
 
* bug 2415:  PacketMetadata Class Locks up Example
* bug 2407:  Packet Metadata bad state with small packet size
* bug 2253:  Alexander Krotov reported a bug: https://www.nsnam.org/bugzilla/show_bug.cgi?id=2253
* bug 2221: Packet tag size increased by 1 byte recently due to a Wi-Fi requirement; what should we do about this? is the previous 20 byte limit sacred?
* bug 2198:  proposed const addition
* bug 2078:  Tommaso found problems in metadata usage
* bug 2102:  another metadata bug reported
* bug 1643:  this has lingered with a patch for a while
* bug 1535:  this Packet::AddAtEnd() in TCP is still around; the TCP buffers still use this
* bug 1407:  packet header printing disabled
 
== TCP models ==
 
Open tracker issues
 
* 2263:  Support processing multiple TCP options in 1 header
* 2122:  decouple TcpTxBuffer variables
* 2264:  Possibility to setup Initial Sequence Number
* 1529:  randomize TCP initial sequence number
* 2285:  loss of TCP 3-way handshake calls receive callback to fire
* 1167:  TCP socket deferring CLOSE forever
* 2133:  In TCP close procedure, assert fail when receive in FIN_WAIT_2
* 2278:  in TcpSocketBase, need to advance NextTxSequence
* 2256:  TCPTxBuffer should be able to tell BytesInFlight
* 2220:  RAM usage reduction through reduction of retx events
* 2214:  TCP ScheduleNow for data transfer
* 1783:  experiencing drops during FastRec causes Tcp cw to blow up
 
== lte module ==
 
Manuel Ricardo is handling bug 2308 (how tags are used).
 
Other LTE bug responses needed for below:
 
* 2339:  PUSCH transmit power scaled incorrectly
* 2282:  Resources from UDP flows not realized
* 2277:  EpcTftClassifier::Classify blindly assumes L4 header
* 2172:  Out-of-bounds array access
* 2161:  Error in removing a bearer in epc-mme class
* 2152:  Uplink HARQ retransmissions out of synch at MAC layer
* 2151:  Redundancy version in uplink HARQ not generated properly
* 2140:  TraceFadingLossModel could use a wrong value
* 2113:  LTE RLC AM:  all status reports indicate no more than one NACK
* 2107:  PCAP printing for S1U and X2
* 2091:  Race condition in LteUePhy::GenerateCqiRsrpRsrq
* 2048:  PfFfMacScheduler assigns dlinfo even if no resources available
* 1861:  Problem when send UDP packet size between 1473-1478 bytes
* 1840:  SINR->CQI->MCS conversion in the UL
* 1515:  REM shows increased SINR when co-located eNBs have same EARFCN
* 1460:  LTE-EPC/RPM different SINR values
* 1438:  lena-simple-epc with AM mode
 
== wifi module ==
 
Tom Henderson would like to accomplish the following:
* resolve bug 2369 on immediate access vs backoff
* EDCA open bugs (2222)
 
current wifi issue list:
https://www.nsnam.org/bugzilla/buglist.cgi?component=wifi&product=ns-3&query_format=advanced&resolution=---
 
== lr-wpan module ==
 
* 2088 SetMcpsDataIndicationCallback stops UDP data
* 2033 IFS are not currently implemented
* 1934 CCA interrupted by incoming packet
* 1933 CCA mode should be configurable
* 1924 sensing radius and CCA
* 1879 LR-WPAN association primitive
* 1809 lr-wpan features needed
 
== internet module ==
 
- 2209 ICMP message forwarding not based in incoming interface
- 2180 is possible to register same route multiple times
- 2102 global routing and bridging is reopened
- 2064 UDP socket GetMtu() needed
- 2057 ARP and NDISC caches should be updated by L4
- 1984 expose additional random variables to configuration system
 
bug 2057, 2102 is considered to be high priority
 
== applications module ==
 
* 2178 add Rx trace source to UdpEchoServer
* 2111 add receiver timestamp to SeqTsHeader (we seem to have agreed to make a new header?)
* 2106 add SetSocket API
* 1977 v4ping verbose output when not explicitly stopped
* 1899 add sequence number header (possibly related to 2111?)
 
== uan module ==
 
* 2007 SetRxThresholdDb is marked deprecated but is used by the model

Revision as of 04:53, 2 September 2016

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This page summarizes the release planning for ns-3.26 (originally planned for June 2016; rescheduled to early September 2016). The ns-3 release process is listed here and here.

This page has been recently revised and some original goals for ns-3.26 have slipped to a new ns-3.27 page.

Revised schedule

The revised (again) schedule is as follows:

  • code freeze during week of September 5
  • release shortly afterwards

Remaining issues

  • aodv: merge patch to 2123 (Tommaso)
  • applications: merge patch to 2474 (Stefano)
  • core: merge patch to 2459 (Peter)
  • core: merge DES metrics patch (Peter)
  • core: resolve attribute errors/attribute spaces/attribute deprecation (issues 2447, 2344, 2149) (Tom and Peter)
  • network: investigate recent packet metadata bugs (2407, 2415), fix if solution found shortly (Tom)
  • mobility: check and merge patch to 2390 (on waypoint mobility (Tom)
  • wifi: merge patch to 2306 and update AODV regression traces (Tom)
  • wifi: investigate DCF assert bug 2477; will fix if solution found shortly (Tom)
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