XDP (eXpress Data Path) is an eBPF-based high-performance network data path used to send and receive network packets at high rates by bypassing most of the operating system networking stack. It is merged in the Linux kernel since version 4.8. [ 2 ]

2025年1月16日 · XDP 是主线内核（mainline Linux kernel）的一部分，与现有的内核 网络栈（kernel’s networking stack）完全兼容，二者协同工作。 XDP 应用（application）通过 C 等高层语言编写，然后编译成特定字节码；出于安 全考虑，内核会首先对这些字节码执行静态分析，然后再将它们翻译成 处理器原生指令（native instructions）。 测试结果显示，XDP 能达到 24Mpps/core 的处理性能。 为展示 XDP 灵活的 编程模型，本文还将给出三个程序示例， 软件 …

XDP全程 eXpress Data Path,即快速数据路径，XDP是linux网络处理流程中的一个ebpf钩子，能够 挂载 eBPF程序，它能够在网络数据包到达网卡驱动层时对其进行处理，打通linux网络处理的高速公路。 其核心思想是在数据包到达网络驱动之前或者之中，在内核空间对网络数据包进行处理，以便快速处理数据包并决定其进一步的处理路径。 相比dpdk，XDP无需将网卡重新绑定到uio或者vfio，直接在 linux 内核网卡驱动处理即可，对于AF_XDP来说，网卡数据不再经过冗长的内核 …

2023年11月8日 · Step into the world of eBPF/XDP with this beginner's guide. Learn to build a simple SSH firewall, utilizing XDP's capabilities for secure, incoming network traffic management!

XDP is a technology that allows developers to attach eBPF programs to low-level hooks, implemented by network device drivers in the Linux kernel, as well as generic hooks that run after the device driver. XDP can be used to achieve high-performance packet processing in an eBPF architecture, primarily using kernel bypass.

2021年8月8日 · XDP provides a data path which we can intercept or even edit packets using an eBPF program. The execution can happen in 3 different places depending on your setup: Offloaded - NIC: eBPF program can be offloaded to the network card itself, provided that the card supports XDP offloading.

2021年4月1日 · XDP (eXpress Data Path) is a powerful new networking feature in Linux that enables high-performance programmable access to networking packets before they enter the networking stack. But XDP has a high learning curve.

2023年6月22日 · XDP is a technology that allows developers to attach eBPF programs to low-level hooks, implemented by network device drivers in the Linux kernel, as well as generic hooks that run after the...

2023年5月12日 · Introduced in Linux 4.8 and built on extended Berkeley Packet Filter (eBPF), XDP provides a mechanism to process network packets earlier and faster than is possible through the kernel’s native network stack. In this post, we’ll discuss:

2021年1月21日 · A review of how Address-Family eXpress Data Path (AF_XDP), a socket type available in standard Linux, provides a viable choice for high performance packets networking into a Cloud-Native Network Function (CNF); includes support for Intel® network interface cards (NICs). Download PDF.