DPDK is a set of libraries and drivers for fast packet processing.
It is designed to run on any processors. The first supported CPU was Intel x86 and it is now extended to IBM POWER and ARM.
It runs mostly in Linux userland. A FreeBSD port is available for a subset of DPDK features.
DPDK is an Open Source BSD licensed project. The most recent patches and enhancements, provided by the community, are available in master branch.
Main libraries

multicore framework
huge page memory
ring buffers
poll-mode drivers for networking , crypto and eventdev