[P4-dev] A different type of calculator?

Thomas Edwards Thomas.Edwards at fox.com
Wed Oct 18 17:56:42 EDT 2017


A similar interesting application is linear network coding:

https://en.wikipedia.org/wiki/Linear_network_coding

-Thomas

--
Thomas Edwards
FOX Networks Engineering & Operations
VP Engineering & Development
thomas.edwards at fox.com
+1-310-369-6696
10201 W Pico Blvd
Los Angeles, CA 90035


From: P4-dev <p4-dev-bounces at lists.p4.org> on behalf of Rakesh Kumar <kumar19 at illinois.edu>
Date: Wednesday, October 18, 2017 at 2:42 PM
To: p4-dev <p4-dev at lists.p4.org>
Subject: [P4-dev] A different type of calculator?

Hey All,

I know, it would sound inefficient, but that is not the point. The point is to be able to perform computation on data that exists beyond the packet headers of the single packet. Is that possible:

Three packets are sent to a switch, one after the other, two of them contain an operand each and the third one contains the operator in the header. Can a P4 program be written which *holds on* to the previous two packets in some memory and computes the result based on the operator packet and return it back to the sender with a result field populated.



-
rakesh
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