问题描述
我正在编写一个Linux内核模块，当链接上升/下降时需要通知它，现在我读到可以打开netlink socket并收听RTMGRP_LINK(网络接口创建/删除) /up/down事件)多播组，但这是从用户空间使用的...任何人都知道如何从内核空间捕获此中断?我正在使用内核2.6.35
I'm writing a linux kernel module that needs to be notified when a link goes up/down, now I've read that I can open a netlink socket and listen to the RTMGRP_LINK (network interface create/delete/up/down events) multicast groups, but this is used from user space... any one knows how to catch this interrupt from kernel space? I'm using kernel 2.6.35
推荐答案
查找<linux/netdevice.h>，特别是有关netdev通知程序链的内容.您可以调用register_netdevice_notifier()来注册一个回调(在许多其他事件类型中)，该回调将接收NETDEV_UP和NETDEV_DOWN事件.
Look in <linux/netdevice.h>, specifically the stuff about the netdev notifier chain. You can call register_netdevice_notifier() to register a callback that (among many other event types) will receive NETDEV_UP and NETDEV_DOWN events.
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