Difference between revisions of "Ns-3.26"

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This page summarizes the release planning for ns-3.26 (planned for June 2016).  The ns-3 release process is listed [http://www.nsnam.org/developers/release-process/ here] and [[Release Process | here]].
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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 [http://www.nsnam.org/developers/release-process/ here] and [[Release Process | here]].
  
= Release goals =
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This page has been recently revised and some original goals for ns-3.26 have slipped to a new [[ns-3.27]] page.
  
The following goals have been identified by maintainers.
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= Revised schedule =
  
== Build system ==
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The revised (again) schedule is as follows:
  
* Upgrade Waf and bake build systems according to [[BakeIntegration | this functional specification for supporting contributed code]]
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* code freeze once outstanding issues resolved
 +
* release shortly afterwards
  
== ns-3 core ==
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Please test the [http://www.nsnam.org/release/ns-allinone-3.26.rc1.tar.bz2 Release Candidate 1] posted on 27 September, and provide feedback to ns-developers mailing list or the bug tracker.
  
For ns-3.26, only maintenance on core (dealing with bug reports/open issues) is planned.
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= Remaining issues being worked for ns-3.26 =
  
Tom Henderson would like to finish off:
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(Updated Sept 27)
* Attribute/TraceSource deprecation (bugs 2149 and 2344)
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* refactor chi-squared tests for random number generation (bug 1927)
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* Matt's test.py contributions (bug 2291)
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* bug 2086 on attribute accessibility
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* bug 1962 on random variable stream GetStream() returning -1
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* bug 1939 on aggregating same object to two nodes
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* bug 1604 on Config::GetDefault
+
  
Peter Barnes intends to continue working on:
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Release candidate 1 is posted, so non-critical bug fixing is done for this release
* Bug 938 - missing Doxygen in ns-3
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* Bug 1764 - can't compile without pthread
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* Bug 1972 - CommandLine duplicate argument handling
+
  
== network module ==
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* <s>(multiple modules)fix warnings due to Wstrict-overflow across codebase</s>  this is resolved for ns-3.26
 
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* <s>aodv:  merge patch to 2123 (Tommaso)</s>
There are a large number of patches pending on the Packet class and its friends; Tom H intends to work through them with Mathieu and with patch contributors.
+
* <s>core:  merge patch to 2459 on ./waf --check-config (Peter)</s>
 
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* <s>coreresolve attribute errors/attribute spaces/attribute deprecation (issues 2447, 2344, 2149) (Tom and Peter)</s>
This proposal was made recently on ns-developers:
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* <s>internetglobal routing and bridging bug 2102 reopened (Tom)</s>
- we apply the patch in bug 2308 (LTE) if the LTE maintainers approve it
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* <s> networkinvestigate recent packet metadata bugs (2407, 2415), fix if solution found shortly (Tom)</s> can't reproduce on ns-3-dev; marking as NEEDINFO
- we apply the patch in bug 2069 (fix size of m_used variable)
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* <s>mobilitycheck and merge patch to 2390 (on waypoint mobility) (Tom)</s>
- we open a 'feature request/PATCH WANTED' for removal of ByteTags
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* wifi<s>merge patch to 2306 and update AODV regression traces </s>(Tom)
- we study the implications of the expansion of tag size recently (bug 2361) and either update documentation or change the code
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** <s>Patch pending and being tested</s>
- we add a 'best current practice' note to the documentation, on tag usage, as suggested by Tommaso. (perhaps modifying this section:
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* wavemerge patch to 2314 (related to 2306) (Tom)
https://www.nsnam.org/docs/release/3.25/models/html/packets.html#adding-and-removing-tags)
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** Probably deferring to ns-3.27
- consider Alex's proposal of some API changes to the tags class: https://www.nsnam.org/bugzilla/show_bug.cgi?id=1383
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* wifiinvestigate DCF assert bug 2477; will fix if solution found shortly (Tom)
- consider to finish patch for serializing/deserializing tags (bug 582)
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** <s>Patch pending and being tested</s>
 
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* wifi:  investigate DCF assert bug 2493; will fix if solution found shortly (Tom)
In addition, the following maintenance/bugs should be dealt with:
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** <s>Patch pending and being tested</s>
 
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* wifiSupported Rates bug (https://www.nsnam.org/bugzilla/show_bug.cgi?id=2496)
* bug 2253Alexander Krotov reported a bug: https://www.nsnam.org/bugzilla/show_bug.cgi?id=2253
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** <s>Patch pending and being tested</s>
* 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?
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* wifiImmediate access patch
* bug 2198proposed const addition
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** <s>Patch pending and being tested</s>
* bug 2078:  Tommaso found problems in metadata usage
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* <s>uanmerge patch to 2488 (Tom)</s>
* bug 2102:  another metadata bug reported
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* config-store: [https://www.nsnam.org/bugzilla/show_bug.cgi?id=2507 bug 2507]: ConfigStore RawTextConfigLoad doesn't reset stream error state
* bug 1643:  this has lingered with a patch for a while
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** <s>Patch pending, has been tested</s>
* bug 1535:  this Packet::AddAtEnd() in TCP is still around; the TCP buffers still use this
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* bug 1407:  packet header printing disabled
+
 
+
== TCP models ==
+
 
+
Natale Patriciello, Anh Nguyen, Tom Henderson, Matthieu Coudron, and Amir Modarresi are working on the following.
+
 
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0) Already added.
+
 
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TCP BIC, Veno, Scalable and Vegas have already been merged.
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1) Open tracker issues
+
 
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* 2263:  Support processing multiple TCP options in 1 header
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* 2122:  decouple TcpTxBuffer variables
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* 2264:  Possibility to setup Initial Sequence Number
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* 1529:  randomize TCP initial sequence number
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* 2285:  loss of TCP 3-way handshake calls receive callback to fire
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* 1167TCP socket deferring CLOSE forever
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* 2133:  In TCP close procedure, assert fail when receive in FIN_WAIT_2
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* 2278:  in TcpSocketBase, need to advance NextTxSequence
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* 2256TCPTxBuffer should be able to tell BytesInFlight
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* 2220:  RAM usage reduction through reduction of retx events
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* 2214:  TCP ScheduleNow for data transfer
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* 1783experiencing drops during FastRec causes Tcp cw to blow up
+
 
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2) Try to merge as many remaining TCP congestion control variants as are ready or nearly ready.
+
* CUBIC
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* YeAH
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* Illinois
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* H-TCP:  http://mailman.isi.edu/pipermail/ns-developers/2016-April/013541.html
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3) work on SACKhttps://codereview.appspot.com/283880043/
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* General Scoreboard
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* Tcp option SACK management
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* Tcp option SACK implementation
+
 
+
MPTCP will not be merged for ns-3.26.
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+
== traffic-control module ==
+
 
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Stefano Avallone (stavallo@unina.it) is leading ns-3.26 development for traffic control, and has the following goals:
+
 
+
* Add support for Byte Queue Limits (in progress)
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* porting and polishing fq-codel (in progress)
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* reviewing [https://www.nsnam.org/bugzilla/show_bug.cgi?id=2261 PIE contribution] (in progress)
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* introduce mq (a multi-queue queue disc configured by default on wifi, along with fq-codel)
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* [https://www.nsnam.org/bugzilla/show_bug.cgi?id=2241 user priorities and QoS API]
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* provide a better solution for a couple of issues introduced by the requeue mechanism
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== lte module ==
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No major changes planned for ns-3.26. Base support for LAA Wifi Coexistence module will be added (Biljana).
+
 
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With regard to two large patches previously proposed for code review, neither probably will make it to ns-3.26:
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* LTE RACH:  https://www.nsnam.org/bugzilla/show_bug.cgi?id=2300  (patch is very large-- Marco is reviewing)
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* Carrier Aggregation from Google Summer of Code 2015 (needs additional work)
+
 
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Tom and Tommaso will try to review and merge the IPv6 support:
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* https://www.nsnam.org/bugzilla/show_bug.cgi?id=2312
+
 
+
=== lte maintenance items ===
+
 
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Manuel Ricardo plans to work on bug 2308 (how tags are used) in May.
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+
Biljana will coordinate the remaining LTE bug responses on a best-effort basis:
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  - 2339:  PUSCH transmit power scaled incorrectly
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- 2282:  Resources from UDP flows not realized
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- 2277:  EpcTftClassifier::Classify blindly assumes L4 header
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- 2172:  Out-of-bounds array access
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- 2161:  Error in removing a bearer in epc-mme class
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- 2152:  Uplink HARQ retransmissions out of synch at MAC layer
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- 2151:  Redundancy version in uplink HARQ not generated properly
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- 2140:  TraceFadingLossModel could use a wrong value
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- 2113:  LTE RLC AM:  all status reports indicate no more than one NACK
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- 2107:  PCAP printing for S1U and X2
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- 2091:  Race condition in LteUePhy::GenerateCqiRsrpRsrq
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- 2048:  PfFfMacScheduler assigns dlinfo even if no resources available
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- 1861:  Problem when send UDP packet size between 1473-1478 bytes
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- 1840:  SINR->CQI->MCS conversion in the UL
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- 1515REM shows increased SINR when co-located eNBs have same EARFCN
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- 1460:  LTE-EPC/RPM different SINR values
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- 1438: lena-simple-epc with AM mode
+
 
+
== wifi module ==
+
 
+
Wifi continues to undergo significant development activity.
+
 
+
Sebastien Deronne is working on these extensions:
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* [https://www.nsnam.org/bugzilla/show_bug.cgi?id=2381 support for 802.11e TXOP]
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* extension of MPDU aggregation and block ack support (multi-tid, delayed response, …)
+
 
+
Tom Henderson is working on these extensions:
+
* SpectrumWifiPhy (bug 1067)
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* TOS setting so that Wi-Fi QoS can read it (also Stefano Avallone has a proposal)
+
* support for selecting best beacon to associate with (also, channel roaming)
+
* support for separate LAA Wifi Coexistence module
+
 
+
Matias Richart is working on [https://codereview.appspot.com/254440043/ RRPAA rate control]
+
 
+
'''wifi maintenance items'''
+
 
+
Tom Henderson would like to accomplish the following:
+
* resolve bug 2369 on immediate access vs backoff
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* EDCA open bugs (2222, 2229)
+
* allow mesh to run over 802.11n/ac
+
 
+
current wifi issue list:
+
https://www.nsnam.org/bugzilla/buglist.cgi?component=wifi&product=ns-3&query_format=advanced&resolution=---
+
 
+
= Release and development schedule =
+
 
+
The following schedule is planned:
+
 
+
* May 11, 2016:  New feature deadline.
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* May 25, 2016:  Planned code freeze date.
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* June 1, 2016:  Scheduled release date for ns-3.26
+
 
+
= Help wanted =
+
 
+
If you would like to help prepare the ns-3.26 release in some way, please contact Tom Henderson (tomhend@u.washington.edu).
+
 
+
Also, please check back at a later date as specific tasks may be listed here.
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Latest revision as of 05:29, 28 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 once outstanding issues resolved
  • release shortly afterwards

Please test the Release Candidate 1 posted on 27 September, and provide feedback to ns-developers mailing list or the bug tracker.

Remaining issues being worked for ns-3.26

(Updated Sept 27)

Release candidate 1 is posted, so non-critical bug fixing is done for this release

  • (multiple modules): fix warnings due to Wstrict-overflow across codebase this is resolved for ns-3.26
  • aodv: merge patch to 2123 (Tommaso)
  • core: merge patch to 2459 on ./waf --check-config (Peter)
  • core: resolve attribute errors/attribute spaces/attribute deprecation (issues 2447, 2344, 2149) (Tom and Peter)
  • internet: global routing and bridging bug 2102 reopened (Tom)
  • network: investigate recent packet metadata bugs (2407, 2415), fix if solution found shortly (Tom) can't reproduce on ns-3-dev; marking as NEEDINFO
  • mobility: check and merge patch to 2390 (on waypoint mobility) (Tom)
  • wifi: merge patch to 2306 and update AODV regression traces (Tom)
    • Patch pending and being tested
  • wave: merge patch to 2314 (related to 2306) (Tom)
    • Probably deferring to ns-3.27
  • wifi: investigate DCF assert bug 2477; will fix if solution found shortly (Tom)
    • Patch pending and being tested
  • wifi: investigate DCF assert bug 2493; will fix if solution found shortly (Tom)
    • Patch pending and being tested
  • wifi: Supported Rates bug (https://www.nsnam.org/bugzilla/show_bug.cgi?id=2496)
    • Patch pending and being tested
  • wifi: Immediate access patch
    • Patch pending and being tested
  • uan: merge patch to 2488 (Tom)
  • config-store: bug 2507: ConfigStore RawTextConfigLoad doesn't reset stream error state
    • Patch pending, has been tested