[$] P4TC hits a brick wall

Post Syndicated from corbet original https://lwn.net/Articles/977310/

P4, short for “Programming
Protocol-independent Packet Processors”, is a programming language aimed at
networking devices; it is useful for the configuration of firewalls and
complicated routing architectures. Since a lot of advanced networking is
done with Linux systems, it stands to reason that there would be value in
supporting P4 and, indeed, an
implementation of P4
in the kernel’s traffic-control subsystem was
first posted by Jamal Hadi Salim at the beginning of 2023. After nearly
18 months, though, this feature has not been merged, and the chances
of that happening would appear to be getting worse.