Nov 26, 2024 · A place to discuss the P4 Programming Language and Ecosystem

Apr 2, 2023 · A P4 register is in some ways better named an “array”, if that makes it more familiar to you. It is an array of values, all with the same type. A read operation retrieves the value …

Dec 28, 2024 · The P4_16 language spec includes a sample P4_16 architecture, called “Very Simple Switch Architecture” to illustrate the necessary points. PSA, PNA, v1model, TNA, …

Feb 23, 2022 · The P4 16 language version (this is a perception more than a fact) seems to have put the PISA term aside. P4 16 also required the “architecture” concept (like V1Model) so the …

Nov 7, 2024 · Folks, I am leading a research group at a university. We want to use P4 for CPS applications and are in the process of purchasing two Tofino2 switches. For that, I recently …

May 14, 2022 · Hi, can someone plz explain how do tables work and what is the relation between key and actions?

May 30, 2023 · Wanted to follow up and confirm if I was understanding it properly: so multiple ternary matches would work but multiple lpm would not? I’m trying to perform some basic 5 …

Mar 15, 2022 · P4 specification specifically says (in the section 1 “Scope”) that it does not define “Mechanisms by which data are received by one packet-processing system and delivered to …

Oct 13, 2023 · This is as close to a “generic” P4 facility as you can get, although it still requires a little more than the core language and its standard library, since they do not provide any …

Sep 3, 2022 · The P4 program is written so that at least some such injected packets from the controller perform read or write operations on a P4 register array, and send a packet back to …