[$] P4TC hits a brick wall

P4, short for "ProgrammingProtocol-independent Packet Processors", is a programming language aimed atnetworking devices; it is useful for the configuration of firewalls andcomplicated routing architectures. Since a lot of advanced networking isdone with Linux systems, it stands to reason that there would be value insupporting P4 and, indeed, animplementation of P4 in the kernel's traffic-control subsystem wasfirst posted by Jamal Hadi Salim at the beginning of 2023. After nearly18months, though, this feature has not been merged, and the chancesof that happening would appear to be getting worse.