浅析ctrl_conn和monitor_conn几个通信接口

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接收来自kernel的netlink,然后派发到所有"ATTACH"到该eth0接口的monitor_conn们
=>wpa_driver_wext_event_receive =>wpa_supplicant_event =>wpa_msg =>wpa_msg_cb
最终调用,将event发往所有"ATTACH"了的monitor_conn程序.
=>wpa_supplicant_ctrl_iface_msg_cb
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接收处理来自ctrl_conn或者monitor_conn发送过来的所有数据
=>wpa_supplicant_ctrl_iface_receive
=>wpa_supplicant_ctrl_iface_process
=>wpa_supplicant_driver_cmd
=>wpa_drv_driver_cmd
=>wpa_s->driver->driver_cmd就是wpa_driver_wext_ops.driver_cmd
=>wpa_driver_wext_driver_cmd
const struct wpa_driver_ops wpa_driver_wext_ops = {
    ...
    .init = wpa_driver_wext_init,
    .driver_cmd = wpa_driver_wext_driver_cmd,//自己添加
    ...
};