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

我一直在查看 net/core/dev.c 和其他文件，试图找出如何获取当前配置的网络设备列表，但事实证明这有点难以找到.

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，但我需要知道当前接口，以便获取 net_device 结构以传入.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一些统计信息相关，因此据我所知，这必须在内核中完成.

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.

如果有人能指出如何获得接口，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]
", dev->name);
    dev = next_net_device(dev);
}

read_unlock(&dev_base_lock);

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