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We Need to Talk About NICs

Authors: 

Pravin Shinde, Antoine Kaufmann, Timothy Roscoe, and Stefan Kaestle, Systems Group, ETH Zurich

Abstract: 

Operating systems fail both to efficiently exploit, and to effectively manage, the considerable hardware resources of modern network interface controllers. We survey the kinds of hardware facilities available and their applicability, and then investigate (and critique) the reasons why OS designers eschew core support for such features. We then describe Dragonet, a new network stack design based on explicit descriptions of NIC capabilities, aimed at making the best use of today’s and tomorrow’s networking hardware. Dragonet represents both the physical capabilities of the network hardware and the current protocol state of the machine as dataflow graphs. We then embed the former into the latter, instantiating the remainder in software.

Pravin Shinde, Systems Group, ETH Zurich

Antoine Kaufmann, Systems Group, ETH Zurich

Timothy Roscoe, Systems Group, ETH Zurich

Stefan Kaestle, Systems Group, ETH Zurich

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