BLUE queue disc implementation for ns-3

Like RED, BLUE [1] is a queuing discipline that aims to control the queue length at routers.

This patch provides an implementation of BLUE in ns-3 along with documentation, test cases, and an example program.

Your feedback would be highly appreciated.

Update 1: Code has been updated to work with Queue as a Template class (Patch 2 onwards)

Update 2: Patch 3 contains latest changes to use stats from QueueDisc class.

Regards,
Vivek Jain

[1] Feng, W. C., Shin, K. G., Kandlur, D. D., & Saha, D. (2002). The BLUE active queue management algorithms. IEEE/ACM Transactions on Networking (ToN), 10(4), 513-528.

[Vivek Jain, 2017-03-16 07:20:37]

The BLUE code (from Patch 2 onwards) has been modified to make it inline with
the recent modifications in ns-3 to use queue as a template.

Thanks and Regards,
Vivek Jain