Using commodity hardware platform to develop and evaluate CSMA protocols
Proceedings of the third ACM international workshop on Wireless network testbeds, experimental evaluation and characterization
Sora: high performance software radio using general purpose multi-core processors
NSDI'09 Proceedings of the 6th USENIX symposium on Networked systems design and implementation
Airblue: a system for cross-layer wireless protocol development
Proceedings of the 6th ACM/IEEE Symposium on Architectures for Networking and Communications Systems
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In this demo, we prove that the flexibility supported by off-the-shelf IEEE 802.11 hardware can be significantly extended if we move the control of the MAC programming interface from the driver to the firmware, i.e. from the host CPU to the card CPU. To this purpose, we introduce the concept of MAC--Engine, that is an executor of Programmable Finite State Machines (PFSM) implemented at the firmware level: we show how the card itself can support different protocol logics thanks to PFSM bytecode representations that can be dynamically injected inside the card memory at run-time without incurring in down time issues or network disconnect events. We provide different PFSM examples in order to test the functional thoroughness of the programming interface provided by the MAC-Engine architecture. Finally, we introduce an experimental PFSM development framework, that can translate a graphical PFSM representation into an optimized bytecode.