simple bpf program in pure rust

prerequisites

• rust nightly toolchain with rust-src component
• bpf-linker installed

build

cargo build --release

load it to lo

sudo ip link set dev lo xdp obj target/bpfel-unknown-none/release/rust-bpf-example sec xdp

show bpf program print

sudo cat /sys/kernel/debug/tracing/trace_pipe

unload

sudo ip link set dev lo xdp off

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if u want to write bpf program in rust, there is a great library: aya.