Linux 7.1 To Retire UDP-Lite - Allows For Better Performance With Cleansed Code
Summary
Phoronix reports that Linux 7.1 will retire UDP-Lite to simplify the kernel's UDP stack and potentially boost performance for UDP workloads. The article traces a long-unused UDP-Lite path, a 2023 syzbot bug related to memory thresholds, and a measured PPS improvement when UDP-Lite is removed. It also describes the staged removal plan, including deactivating UDP-Lite sockets and cleaning up code, with a merge commit linked for net-next.