NetworkMonitoring

深入理解 Linux 内核 Netlink 协议:用户态与内核态通信的全栈架构与深度实战

深度解析 Linux 内核 Netlink 协议架构:从套接字编程基础、消息帧格式、TLV 属性嵌套,到三大协议族(Route/Generic/Netfilter)的全套方法论。涵盖 RTNL 链路事件订阅、Generic Netlink 家庭注册、WireGuard 配置实现、内核态 Netlink 服务端实现、NLM_F_MULTI 多部分消息处理。详细分析 Netlink 在 systemd-networkd、NetworkManager、WireGuard 等关键系统中的实际应用,以及高并发场景下的性能优化策略和最佳实践。

eBPF Networking Deep Dive: From XDP Packet Processing to TCP Tracing and Production Deployment

Comprehensive deep-dive into eBPF networking internals: XDP packet processing at driver level, Traffic Control subsystem, socket-level tracing with kprobes, TCP state machine and retransmission analysis, DNS query monitoring, network latency distribution and throughput measurement, production deployment guide with kernel configuration, containerized environments, and performance optimization strategies.