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Add BPF dynptr TC demo implementation

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- Implement BPF program for TC ingress using dynptrs to safely parse packet headers and manage variable-length ringbuf records.
- Create user-space loader for the BPF program, allowing configuration of blocked ports and snapshot lengths for TCP payloads.
- Define necessary data structures and constants in header file for both BPF and user-space contexts.
- Add a comprehensive test script to validate functionality, including basic packet capture and port blocking tests.
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2026-02-01 00:32:34 +00:00
parent 2fa73cbe3f
commit c42ba4f9ab
14 changed files with 2155 additions and 41 deletions
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README.zh.md
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@@ -81,6 +81,10 @@ GPU:
- [lesson 36-userspace-ebpf](src/36-userspace-ebpf/README.zh.md) 用户空间 eBPF 运行时：深度解析与应用实践
- [lesson 38-btf-uprobe](src/38-btf-uprobe/README.zh.md) 借助 eBPF 和 BTF，让用户态也能一次编译、到处运行
- [lesson 43-kfuncs](src/43-kfuncs/README.zh.md) 超越 eBPF 的极限：在内核模块中定义自定义 kfunc
- [features struct_ops](src/features/struct_ops/README.zh.md) eBPF 教程：使用 BPF struct_ops 扩展内核子系统
- [features bpf_iters](src/features/bpf_iters/README.zh.md) eBPF 教程：BPF 迭代器用于内核数据导出
- [features dynptr](src/features/dynptr/README.zh.md) BPF Dynamic Pointers for Variable-Length Data
- [features bpf_arena](src/features/bpf_arena/README.zh.md) eBPF 实例教程：BPF Arena 零拷贝共享内存
- [features bpf_wq](src/features/bpf_wq/README.zh.md) eBPF 教程：BPF 工作队列用于异步可睡眠任务
- [features bpf_iters](src/features/bpf_iters/README.zh.md) eBPF 教程：BPF 迭代器用于内核数据导出
- [features struct_ops](src/features/struct_ops/README.zh.md) eBPF 教程：使用 BPF struct_ops 扩展内核子系统