Introduction

This is a simple implementation of TSO processing in TCP layer. The implementation follows GNU/Linux 2.6.38.3.

Note: we only implement colascing data in TCP layer. Sending a larger virtual packet into NIC layer and segmentation offload is our future work.

Example

In directory example, run simulation with script run_baseline.sh

How to use

Use the TCP Agent Agent/TCP/FullTcp.

Enable TSO:

Agent/TCP/FullTcp set tso_enable_ true

Change TSO settings:

# maximum TSO size in Bytes
Agent/TCP/FullTcp set max_tso_size_ 65536
# the same meaning as the sysctl parameter net.ipv4.tcp_tso_win_divisor in Linux
Agent/TCP/FullTcp set tcp_tso_win_divisor_ 3

References

Danfeng Shan, Fengyuan Ren, "Improving ECN Marking Scheme with Micro-burst Traffic in Data Center Networks", IEEE INFOCOM, Atlanta, GA, May, 2017.

Bibtex:

@inproceedings {infocom17cedm,
	author = {Danfeng Shan and Fengyuan Ren},
	title = {Improving ECN Marking Scheme with Micro-burst Traffic in Data Center Networks},
	booktitle = {IEEE INFOCOM},
	year = {2017},
}