feat: implements run-time adaptive solution #67
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introduces the precedence (pdr) and forward (far) objects.
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The PR proposes a new design to improve its flexibility by reducing the run-time adaptation time. The Just-In-Time (JIT) compilation may have a huge impact on the adaptation time due to the in-kernel verification of the BPF programs at run-time. The results show latency improvements of around 95% to inject the BPF program into the Linux kernel. Furthermore, the solution keeps the same functionalities and delivers a packet processing performance of around 10-11Mpps using 6 cores with almost 70% of the CPU utilization in downlink/uplink directions.
See the paper
Run-time Adaptive In-Kernel BPF/XDP Solution for 5G UPFfor more information (commit-id: 0353503).