mirror of
https://github.com/eunomia-bpf/bpf-developer-tutorial.git
synced 2026-02-03 02:04:30 +08:00
64817cc722
- Introduced CLAUDE.md to provide an overview and guidance for the eBPF Developer Tutorial repository. - Added a master Makefile to automate the building and cleaning of eBPF tutorial subdirectories. - Updated .gitignore in the sslsniff example to include the sslsniff binary. - Made minor code adjustments in user_ringbuf.c and xdp-tcpdump.c to include necessary headers. - Modified the Makefile in the btf-uprobe example to streamline the build process.
61 lines
1.8 KiB
Markdown
61 lines
1.8 KiB
Markdown
# CLAUDE.md
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This file provides guidance to Claude Code (claude.ai/code) when working with code in this repository.
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## Project Overview
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This is the eBPF Developer Tutorial repository - a comprehensive learning resource for eBPF development. It provides 48+ practical examples progressing from beginner to advanced topics using modern eBPF frameworks like libbpf, Cilium eBPF, and libbpf-rs.
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## Common Development Tasks
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### Building eBPF Examples
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Most examples use libbpf and follow this pattern:
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```bash
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cd src/<example-number>-<example-name>
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make
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```
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For Rust examples (in src/37-uprobe-rust/):
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```bash
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cd src/37-uprobe-rust/<example>
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cargo build
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```
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### Running Examples
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Most examples require root privileges:
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```bash
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sudo ./<binary-name>
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# or with timeout for continuous monitoring tools:
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sudo timeout -s 2 3 ./<binary-name>
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```
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### Clean Build Artifacts
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```bash
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make clean
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```
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## Architecture
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### Build System
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- **Framework**: GNU Make with libbpf
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- **BPF Compilation**: Clang/LLVM compiles `.bpf.c` → `.bpf.o`
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- **Skeleton Generation**: bpftool generates `.skel.h` from BPF objects
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- **User Space**: GCC compiles C programs linking with libbpf
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- **Dependencies**: All in `src/third_party/` (libbpf, bpftool, blazesym, vmlinux headers)
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### Directory Structure
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- `src/0-10`: Basic eBPF concepts (kprobes, uprobes, tracepoints)
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- `src/11-18`: Advanced libbpf development
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- `src/19-21,29,41-42`: Networking (LSM, TC, XDP, sockops)
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- `src/22-28,34`: Security topics
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- `src/31,37`: Language integration (Go, Rust)
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- `src/44-45`: BPF schedulers
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- `src/47`: GPU tracing
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- Each tutorial has its own Makefile and README
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### Key Components
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1. **vmlinux headers**: Pre-generated for x86, arm, arm64, riscv, powerpc, loongarch
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2. **CO-RE (Compile Once, Run Everywhere)**: Uses BTF for kernel compatibility
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3. **Multiple frameworks**: libbpf (primary), eunomia-bpf, Cilium eBPF, libbpf-rs |