eBPF-based fastpath for container overlay networks

• Tested on Linux kernel v6.8.0.

Important files

• econ_rx.bpf.c: Functions for handling packets in RX
• econ_tx.bpf.c: Functions for handling packets in TX
• trace.bpf.c: Functions to print debug messages.

Make targets

• all: Compile all BPF C files
• rx: Attach all BPF programs in the RX path
• unrx: Detach all BPF programs in the RX path
• tx: Attach all BPF programs in the TX path
• untx: Detach all BPF programs in the TX path
• trace: Attach all debug/tracing BPF programs
• untrace: Detach all debug/tracing programs
• attach: Attach all BPF programs in the RX/TX path
• detach: Detach all BPF programs