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Lightweight Thread Tunnelling in Network Applications

  • Austin Donnelly
Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 2546)

Abstract

Active Network nodes are increasingly being used for nontrivial processing of data streams. These complex network applications typically benefit from protection between their components for faulttolerance or security. However, fine-grained memory protection introduces bottlenecks in communication among components. This paper describes memory protection in Expert, an OS for programmable network elements which re-examines thread tunnelling as a way of allowing these complex applications to be split over multiple protection domains. We argue that previous problems with tunnelling are symptoms of overly general designs, and we demonstrate a minimal domain-crossing primitive which nevertheless achieves the majority of benefits possible from tunnelling.

Keywords

Network Application Program Counter Tunnelling System Encryption Module Protected Procedure 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag Berlin Heidelberg 2002

Authors and Affiliations

  • Austin Donnelly
    • 1
  1. 1.University of CambridgeComputer LaboratoryCambridgeUK

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