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commit 6b36049b1adc63886cbb9c4b51185caaba1c675d Author: Jacob Erlbeck jerlbeck@sysmocom.de Date: Fri Jul 17 16:39:09 2015 +0200

llc: Use CoDel to drop packages from the LLC queue (TODO)

Currently packages are only dropped if they have reached their life time. This leads to queues being constantly filled under load, increasing the latency a lot.

...

http://cgit.osmocom.org/osmo-pcu/commit/?id=b01199cc6d95be9dee18a5e476d528f5...

commit b01199cc6d95be9dee18a5e476d528f5eba91a99 Author: Jacob Erlbeck jerlbeck@sysmocom.de Date: Mon Jul 20 12:40:42 2015 +0200

llc: Add CoDel AQM implementation

This commit adds an implementation of the CoDel algorithm based on the reference pseudocode presented in http://queue.acm.org/appendices/codel.html. Instead of abstracting the queue itself, the implementation provides a time stamp based automaton which is invoked after a package has been dequeued.

Sponsored-by: On-Waves ehf

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Summary of changes: .gitignore | 1 + src/Makefile.am | 6 +- src/bts.h | 4 ++ src/gprs_codel.c | 167 ++++++++++++++++++++++++++++++++++++++++++++++ src/gprs_codel.h | 92 +++++++++++++++++++++++++ src/gprs_ms.cpp | 18 ++++- src/gprs_ms.h | 9 +++ src/pcu_vty.c | 51 ++++++++++++++ src/tbf_dl.cpp | 9 +++ tests/Makefile.am | 8 ++- tests/codel/codel_test.c | 147 ++++++++++++++++++++++++++++++++++++++++ tests/codel/codel_test.ok | 29 ++++++++ tests/testsuite.at | 6 ++ 13 files changed, 543 insertions(+), 4 deletions(-) create mode 100644 src/gprs_codel.c create mode 100644 src/gprs_codel.h create mode 100644 tests/codel/codel_test.c create mode 100644 tests/codel/codel_test.ok

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