Preprint: Open Source Compiling for V1Model RMT Switch: Making Data Center Networking Innovation Accessible

TL;DR

This paper presents an open-source compiler backend for P4 language targeting V1Model architecture switches, enabling researchers to experiment with data plane innovations at silicon level.

Contribution

It introduces an open-source compiler backend for P4 targeting V1Model switches, facilitating innovation and experimentation in data center networking hardware.

Findings

Developed an open-source compiler backend for P4 and V1Model switches

Enables detailed performance analysis of data plane innovations

Facilitates experimentation with new mapping algorithms and instruction sets

Abstract

Very few of the innovations in deep networking have seen data center scale implementation. Because the Data Center network's extreme scale performance requires hardware implementation, which is only accessible to a few. However, the emergence of reconfigurable match-action table (RMT) paradigm-based switches have finally opened up the development life cycle of data plane devices. The P4 language is the dominant language choice for programming these devices. Now, Network operators can implement the desired feature over white box RMT switches. The process involves an innovator writing new algorithms in the P4 language and getting them compiled for the target hardware. However, there is still a roadblock. After designing an algorithm, the P4 program's compilation technology is not fully open-source. Thus, it is very difficult for an average researcher to get deep insight into the performance of his/her innovation when executed at the silicon level. There is no open-source compiler backend available for this purpose. Proprietary compiler backends provided by different hardware vendors are available for this purpose. However, they are closed-source and do not provide access to the internal mapping mechanisms. Which inhibits experimenting with new mapping algorithms and innovative instruction sets for reconfigurable match-action table architecture. This paper describes our work toward an open-source compiler backend for compiling P416 targeted for the V1Model architecture-based programmable switches.