This event has ended. View the official site or create your own event → Check it out
This event has ended. Create your own
View analytic
Tuesday, November 8 • 8:45am - 9:10am
PISCES: A P4-Enabled Open vSwitch- Muhammad Shahbaz, Princeton University and Cian Ferriter, Intel

Sign up or log in to save this to your schedule and see who's attending!

Hypervisors use software switches to steer packets to and from virtual machines (VMs). These switches frequently need upgrading and customization---to support new protocol headers or encapsulations for tunneling and overlays, to improve measurement and debugging features, and even to add middlebox-like functions. Software switches are typically based on a large body of code, including kernel code, and changing the switch is a formidable undertaking requiring domain mastery of network protocol design and developing, testing, and maintaining a large, complex codebase. Changing how a software switch forwards packets should not require intimate knowledge of its implementation. Instead, it should be possible to specify how packets are processed and forwarded in a high-level domain-specific language (DSL) such as P4, and compiled to run on a software switch. We present PISCES, a software switch derived from Open vSwitch (OVS) DPDK-based implementation, a hard-wired hypervisor switch, whose behavior is customized using P4. PISCES is not hard-wired to specific protocols; this independence makes it easy to add new features. We also show how the compiler can analyze the high-level specification to optimize forwarding performance. Our evaluation shows that PISCES performs comparably to native OVS's DPDK-based implementation and that PISCES programs are about 40 times shorter than equivalent changes to OVS source code.


Cian Ferriter

Software Engineer, Intel
Cian Ferriter is a Software Engineer at Intel, Ireland. His current work focuses on adding support for P4 in OVS. Specifically, he is working on building a programmable micro-flow cache, configured via P4.
avatar for Muhammad Shahbaz

Muhammad Shahbaz

Graduate Student, Princeton University
Muhammad Shahbaz is a third year Ph.D. student in the Department of Computer Science at Princeton University. His research focuses on the application of software-defined networking (SDN) in campus, enterprise and wide-area networks, network measurement and testing, and language abstractions for programmable data planes. Previously, he worked as a research assistant at the University of Cambridge, Computer Laboratory on the CTSRD and MRC2 projects... Read More →

Tuesday November 8, 2016 8:45am - 9:10am

Attendees (6)