Sep 14, 2025 · 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 …

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 …

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, …

Dec 10, 2025 · Hello everyone, P4 org is planning to participate in Google Summer of Code (GSoC) again this year. An important part of our application is identifying mentors from the …

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

Nov 7, 2024 · We want to use P4 for CPS applications and are in the process of purchasing two Tofino2 switches. For that, I recently applied for the Intel Connectivity Research Program to …

Jun 6, 2025 · from p4.config.v1 import p4info_pb2 ModuleNotFoundError: No module named 'p4' It seems like the generated p4info_pb2.py and p4runtime_pb2.py files are not structured …

Jun 27, 2021 · Pick one of these: (a) I have an existing Ubuntu 16.04, 18.04, or 20.04 Linux system, and I want to install the open source P4 development tools on it (b) I am comfortable …

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 …