P4sim is a P4-driven network simulator aiming at combining P4, the state-of-the-art programmable data plane language and ns-3, one of the most popular network simulators. P4sim is an open-source project under Apache License 2.0.
Our implementation was built upon the the P4-driven Network Simulator Module, as outlined in:
Bai, Jiasong, Jun Bi, Peng Kuang, Chengze Fan, Yu Zhou, and Cheng Zhang. NS4: Enabling programmable data plane simulation. In Proceedings of the Symposium on SDN Research, pp. 1-7. 2018. Available at ACM DL
See vm-env.md.