PFQ is a functional framework designed for the Linux operating system built for efficient packets capture/transmission (10G, 40G and beyond), in-kernel functional processing, kernel-bypass and packets steering across groups of sockets/end-points.
It is highly optimized for multi-core architecture, as well as for network devices equipped with multiple hardware queues. Compliant with any NIC, it provides a script that generate accelerated network device drivers starting from the source code.
PFQ enables the development of high-performance network applications and it is shipped with a custom version of libpcap that accelerate and parallelize legacy applications. In addition, a pure functional language designed for early stages in-kernel packet processing is included: pfq-lang.
pfq-lang is inspired by Haskell and is designed to define applications that run on top of network device drivers. Through pfq-lang it is possible to build efficient bridges, port mirrors, simple firewalls, network balancers and so forth.
The framework includes the source code of the PFQ kernel module, user-space libraries for C, C++11-14, Haskell language, an accelerated pcap library, an implementation of pfq-lang as eDSL for C++/Haskell, an experimental pfq-lang compiler and a set of diagnostic tools.
PFQ performance highly depends on the hardware used.
Running on top of a Xeon processor equipped and the Intel 82599 10G controller, PFQ can process, steer to user-space and transmit the line speed (~14,8 Million packets per second) using 2 or 3 kernel threads.
The following link shows the configuration file and the performance measured running PFQ on top of Intel 82599 10/20G NICs.
The current stable release is the master branch (v6.1).
The package provides the source code of the PFQ kernel module, user-space libraries for the C, C++11 and Haskell language, utilities, scripts a set of diagnostic tools.
Linux kernel headers (3.x/4.x), gcc/g++ 4.7 (or higher), GHC 7.8 (or 7.10), alex, happy, CMake and make tool are required for the compilation.
The guideline covers the principal problems of compilation and installation.
New to PFQ programming? The wiki pages can get you started quickly.
The PFQ kernel module and user-space libraries are distributed under the GPL license.
Nicola Bonelli email@example.com