如何获取有关无线net_devices的信息 [英] How to get information about wireless net_devices
问题描述
我正在使用 NF_INET_PRE_ROUTING 挂钩的Linux内核模块中工作.在那个挂钩中，我需要知道所有net_devices的状态，尤其是无线设备.我可以从 net_device->标记中获取有关设备的一些信息，即 IFF_UP 是设备处于启动状态还是处于关闭状态.但是我需要更多有关无线 net_device 的信息.
I am working in Linux kernel module which is using NF_INET_PRE_ROUTING hook. In that hook I need to know the status of all my net_devices, specially wireless devices. I am able get some information about devices from net_device->flags i.e IFF_UP is device up or down. But I need some more detail about the wireless net_device.
- net_device是无线的还是有线的?
- 无线设备是否已连接到无线接入点?
- 如果是，是哪个无线接入点(接入点名称)?
- 与该设备关联的网关地址(我想我需要从路由表中获取该地址吗?).
推荐答案
如果(net_device-> ieee80211_ptr！= NULL)? ieee80211_ptr 是 cfg80211_registered_device 与 wiphy_to_dev().
if(net_device->ieee80211_ptr != NULL)? The ieee80211_ptr is a struct wireless_dev*. This structure should give you access to most of the values you requested. In struct wireless_dev is struct wiphy *wiphy;, you can use this to get a cfg80211_registered_device with wiphy_to_dev().
网关地址与无线无关.我怀疑 devices 是否具有任何 gateway 信息，但是您需要 net_device 中的接口 name 来查找路由.该路由与 IP 有关，与 device 无关.祝你好运.
The gateway address is unrelated to wireless. I doubt devices have any gateway information but you need the interface name in net_device to find the route. The route is IP related and has nothing to do with a device. Good luck.
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