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Don Lewis 91336b403a Import Dummynet AQM version 0.2.1 (CoDel, FQ-CoDel, PIE and FQ-PIE).
Centre for Advanced Internet Architectures

Implementing AQM in FreeBSD

* Overview <http://caia.swin.edu.au/freebsd/aqm/index.html>

* Articles, Papers and Presentations
  <http://caia.swin.edu.au/freebsd/aqm/papers.html>

* Patches and Tools <http://caia.swin.edu.au/freebsd/aqm/downloads.html>

Overview

Recent years have seen a resurgence of interest in better managing
the depth of bottleneck queues in routers, switches and other places
that get congested. Solutions include transport protocol enhancements
at the end-hosts (such as delay-based or hybrid congestion control
schemes) and active queue management (AQM) schemes applied within
bottleneck queues.

The notion of AQM has been around since at least the late 1990s
(e.g. RFC 2309). In recent years the proliferation of oversized
buffers in all sorts of network devices (aka bufferbloat) has
stimulated keen community interest in four new AQM schemes -- CoDel,
FQ-CoDel, PIE and FQ-PIE.

The IETF AQM working group is looking to document these schemes,
and independent implementations are a corner-stone of the IETF's
process for confirming the clarity of publicly available protocol
descriptions. While significant development work on all three schemes
has occured in the Linux kernel, there is very little in FreeBSD.

Project Goals

This project began in late 2015, and aims to design and implement
functionally-correct versions of CoDel, FQ-CoDel, PIE and FQ_PIE
in FreeBSD (with code BSD-licensed as much as practical). We have
chosen to do this as extensions to FreeBSD's ipfw/dummynet firewall
and traffic shaper. Implementation of these AQM schemes in FreeBSD
will:
* Demonstrate whether the publicly available documentation is
  sufficient to enable independent, functionally equivalent implementations

* Provide a broader suite of AQM options for sections the networking
  community that rely on FreeBSD platforms

Program Members:

* Rasool Al Saadi (developer)

* Grenville Armitage (project lead)

Acknowledgements:

This project has been made possible in part by a gift from the
Comcast Innovation Fund.

Submitted by:	Rasool Al-Saadi <ralsaadi@swin.edu.au>
X-No objection:	core
MFC after:	2 weeks
Differential Revision:	https://reviews.freebsd.org/D6388
2016-05-26 21:40:13 +00:00
bin Close the input FILE * in read_file() and the output FILE * in write_file() 2016-05-25 18:38:30 +00:00
cddl Add initial DTrace support for RISC-V. 2016-05-24 16:41:37 +00:00
contrib Update libc++ to 3.8.0. Excerpted list of fixes (with upstream revision 2016-05-26 18:52:49 +00:00
crypto libkrb5: Fix potential double-free 2016-05-11 23:25:59 +00:00
etc Use the expiry date to determine whether to replace the DB copy of 2016-05-25 01:35:02 +00:00
gnu gnugrep: Update the configuration. 2016-05-22 20:17:55 +00:00
include WITH_META_MODE: Disable cookie handling for include installation. 2016-05-21 01:31:57 +00:00
kerberos5 Remove the old depend (mkdep) code and make FAST_DEPEND the one true way. 2016-03-30 23:50:23 +00:00
lib Let l64a() properly null terminate its result. 2016-05-26 20:55:15 +00:00
libexec Fix issues found by Coverity in the rtld-elf.c:gethints(). 2016-05-25 18:10:44 +00:00
release Remove vestigial cloudware-install bits missed in r300767. 2016-05-26 21:08:44 +00:00
rescue Split /rescue into its own package. 2016-02-08 14:27:45 +00:00
sbin Import Dummynet AQM version 0.2.1 (CoDel, FQ-CoDel, PIE and FQ-PIE). 2016-05-26 21:40:13 +00:00
secure Regen x86 assembly files for r299480. 2016-05-11 20:11:21 +00:00
share Update default KMODDIR in comment after r299393. 2016-05-26 18:28:10 +00:00
sys Import Dummynet AQM version 0.2.1 (CoDel, FQ-CoDel, PIE and FQ-PIE). 2016-05-26 21:40:13 +00:00
targets targets/Makefile: fix a typo (derrived -> derived). 2016-05-18 10:59:16 +00:00
tests Return the correct status when a partially completed request is cancelled. 2016-05-24 21:09:05 +00:00
tools WITH_META_MODE: Correct description of missing .meta file. 2016-05-24 23:15:52 +00:00
usr.bin Do libxo cleanup even in case of errors. 2016-05-26 14:21:02 +00:00
usr.sbin rmextattr(8) man page clarifications regarding -qq 2016-05-26 14:26:49 +00:00
.arcconfig Remove project.name which is a product of a bygone era. 2016-04-21 04:33:07 +00:00
.arclint phabricator related changes: 2015-04-20 20:33:22 +00:00
COPYRIGHT Bump copyright year. 2015-12-31 11:21:45 +00:00
LOCKS Explicitly require Security Officer's approval for kernel PRNG bits. 2013-09-17 14:19:05 +00:00
MAINTAINERS Add myself to MAINTAINERS. 2016-03-14 16:27:43 +00:00
Makefile Make armv6 hard float abi by default. Kill armv6hf. 2016-05-18 06:01:18 +00:00
Makefile.inc1 Update libc++ to 3.8.0. Excerpted list of fixes (with upstream revision 2016-05-26 18:52:49 +00:00
Makefile.libcompat Set CPP from XCPP for the libcompat build. 2016-04-15 18:32:05 +00:00
ObsoleteFiles.inc Drop trailing asterisks. 2016-05-20 17:41:12 +00:00
README README: remove nonexistent 'games' directory. 2016-05-18 10:43:13 +00:00
UPDATING Add bit_count to the bitstring(3) api 2016-05-23 20:29:18 +00:00

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tests		Regression tests which can be run by Kyua.  See tests/README
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