FairPolicer

This is a software prototype of FairPolicer, which is implemented as a kernel module. FairPolicer is a network traffic policer that can fairly allocate bandwidth among contending flows regardless of their congestion control algorithms.

Details of FairPolicer can be found at our paper "Towards the Fairness of Traffic Policer", which was presented at INFOCOM'21.

Requirements

• Linux 5.4.0
• Kernel headers

How to use

Disabling offload on network devices (e.g., eth0)

ethtool -K eth0 tso off gso off gro off lro off

This command disables offload features of eth0 to better emulate a switch.

Compile kernel module

make

Insert kernel module

insert-module.sh 4 1024

This command configures the FairPolicer with a 4*1024 Count-Min Sketch and inserts it into the kernel.

Installing qdisc on a network device (e.g., eth0)

tc qdisc add dev eth0 root tbf rate 10mbit burst 180kb limit 1600b

This command enables FairPolicer at eth0, allowing 180KB traffic burst and throttling overall traffic rate to 10Mbps.

Contact

If you have any questions, contact Danfeng Shan.