获取Linux内核中的网络设备列表 [英] Getting list of network devices inside the Linux kernel

问题描述

我一直在浏览net/core/dev.c和其他文件，以试图找到如何获取当前已配置的网络设备的列表，事实证明这很难找到.

I've been looking through net/core/dev.c and other files to try to find out how to get the list of network devices that are currently configured and it's proving to be a little difficult to find.

最终目标是能够使用dev.c中的dev_get_stats获取网络设备统计信息，但是我需要了解当前接口，以便可以抓取net_device结构以进行传递.我必须在内核，因为我正在编写一个模块，该模块添加了一个新的/proc/条目，该条目与当前网络设备的某些统计信息相关，因此，根据我的收集，这必须在内核内部完成.

The end goal is to be able to get network device statistics using dev_get_stats in dev.c, but I need to know the current interfaces so I can grab the net_device struct to pass in. I'm having to do this inside the kernel as I'm writing a module which adds in a new /proc/ entry which relates to some statistics from the current network devices so from what I can gather this must be done inside the kernel.

如果有人可以指出我如何获取界面，将不胜感激.

If someone could point me to how to get the interfaces it would be much appreciated.

推荐答案

这应该可以解决问题:

#include <linux/netdevice.h>

struct net_device *dev;

read_lock(&dev_base_lock);

dev = first_net_device(&init_net);
while (dev) {
    printk(KERN_INFO "found [%s]\n", dev->name);
    dev = next_net_device(dev);
}

read_unlock(&dev_base_lock);

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