eBPF Program Development and Execution Flow

eBPF Program Development and Execution Flow A workflow diagram generated by Archify. 01 / User space 02 / Kernel space EX / Verification failure Write/compile · C/Rust → Clang/LLVM · User space Write/compile C/Rust → Clang/LLVM Load via bpf() · deliver bytecode · User space Load via bpf() deliver bytecode User-space read · consume results · User space User-space read consume results Verifier · Verifier · Kernel space Verifier Verifier JIT compile · machine code · Kernel space JIT compile machine code Attach · run · per event · Kernel space Attach · run per event Store in eBPF map · kernel ↔ user shared · Kernel space Store in eBPF map kernel ↔ user shared Load rejected · error message · Verification failure Load rejected error message pass fail Legend User space Kernel processing Verify Data sharing

Data path

  • • eBPF maps bridge kernel and user space
  • • Many map types: ring buffers, hash maps, and more

On failure

  • • Failed programs never enter the kernel
  • • Fix using the error message as the guide