Leveraging in-network real-value computation for home network device recognition

Current generation of switches are highly programmable and able to support stateful. However, these switches cannot perform floating point operations. As a result several network applications have to be run on external servers or middleboxes in the network. We introduce InREC, a system that extends the capabilities of programmable switches to support in-network real-valued operations using the IEEE half-precision floating point representation. Our demo on a Barefoot Tofino switches demonstrates the efficiency of InREC for in-network computation by computing a logistic regression function to classify devices (IoT and laptop) in a simulated home environment.