The fd.io vpp implementation is a third-generation vector packet processing implementation specifically related to US Patent 7,961,636, as well as earlier work. Note that the Apache-2 license specifically grants non-exclusive patent licenses; we mention this patent as a point of historical interest.node
The files associated with vlib are located in the ./src/{vlib, vlibapi, vlibmemory} folders. These libraries provide vector processing support including graph-node scheduling, reliable multicast support, ultra-lightweight cooperative multi-tasking threads, a CLI, plug in .DLL support, physical memory and Linux epoll support. Parts of this library embody US Patent 7,961,636.api