This is a development tutorial for eBPF based on CO-RE (Compile Once, Run Everywhere). It provides practical eBPF development practices from beginner to advanced, including basic concepts, code ...

学习计算机的同学，或多或少都会有一个黑客情节。总是会想成为一个无拘无束的“黑客”，探索计算机世界里技术的边缘，挑战一切规则与界限。其实，正如电影《东邪西毒》里欧阳峰说的：“人都会经历这个阶段，看见一座山，就想知道山后面是什么。

Abstract: I welcome you to the fourth issue of the IEEE Communications Surveys and Tutorials in 2021. This issue includes 23 papers covering different aspects of communication networks. In particular, ...