Wintun:一款惊艳的 WireGuard 虚拟网卡接口驱动

https://cloud.tencent.com/developer/article/1847811

两款开源项目的虚拟接口驱动:

  • Wireguard 项目的 Wintun 接口[1]
  • OpenVPN 的 Tap 接口[2]

这两个项目都是非常出名的搭建隧道的开源 V.P.N 项目。由于目前对 openVPN 项目不太了解,也没有适配 Tap 接口,因此这里重点介绍下 WinTun 接口。此接口实现我是非常非常的喜欢,喜欢到简直不要不要的。

简介

虚拟网卡驱动源代码(原版): /* * snull.c -- the Simple Network Utility * * Copyright (C) 2001 Alessandro Rubini and Jonathan Corbet * Copyright (C) 2001 O'Reilly & Associates * * The source code in this file can be freely used, adapted, * and redistributed in source or binary form, so long as an * acknowledgment appears in derived source files. The citation * should list that the code comes from the book "Linux Device * Drivers" by Alessandro Rubini and Jonathan Corbet, published * by O'Reilly & Associates. No warranty is attached; * we cannot take responsibility for errors or fitness for use. * * $Id: snull.c,v 1.21 2004/11/05 02:36:03 rubini Exp $ */ #include #include #include #include #include #include /* printk() */ #include /* kmalloc() */ #include /* error codes */ #include /* size_t */ #include /* mark_bh */ #include #include /* struct device, and other headers */ #include /* eth_type_trans */ #include /* struct iphdr */ #include /* struct tcphdr */ #include #include "snull.h" #include #include MODULE_AUTHOR("Alessandro Rubini, Jonathan Corbet"); MODULE_LICENSE("Dual BSD/GPL"); /* * Transmitter lockup simulation, normally disabled. */ static int lockup = 0; module_param(lockup, int, 0); static int timeout = SNULL_TIMEOUT; module_param(timeout, int, 0); /* * Do we run in NAPI mode? */ static int use_napi = 0; module_param(use_napi, int, 0); /* * A structure representing an in-flight packet. */ struct snull_packet { struct snull_packet *next; struct net_device *dev; int datalen; u8 data[ETH_DATA_LEN]; }; int pool_size = 8; module_param(pool_size, int, 0); /* * This structure is private to each device. It is used to
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