原文：http://blog.csdn.net/hui523hui523hui523/article/details/38493725
1.2.2 无线网络Wireless
WiFi设置储存在/etc/config/wireless中（目前支持Broadcom, Atheros 和mac80211）。当第一次启动路由器时，将会自动检测你的卡并且创建简单的配置文件。默认情况下 'option network lan' 是被注释掉的。它提供了一个非安全的无线网络共享。
The WiFi settings are configured in the file /etc/config/wireless(currently supported on Broadcom, Atheros and mac80211). When booting the router for the first time it should detect your card and create a sample configuration file. By default 'option network lan' is commented. This prevents unsecured sharing of the network over the wireless interface.
每一个无线驱动都有自己的配置脚本/lib/wifi/driver_name.sh ，用来处理驱动选项和配置。这个脚本也调用特殊二进制，例如Broadcom的w1c，或者atheros的hostapd 和wpa_supplicant 。
Each wireless driver has its own configuration script in /lib/wifi/driver_name.sh which handles driver specific options and configurations. This script is also calling driver specific binaries like wlc for Broadcom, or hostapd and wpa_supplicant for atheros.
使用不同的架构配置是因为不同的驱动配置。
The reason for using such architecture, is that it abstracts the driver configuration.
标准的Broadcom无线配置： Generic Broadcom wireless config:
标准的Atheros无线配置： Generic Atheros wireless config:
标准的mac80211无线配置： Generic mac80211 wireless config:
标准的多播Atheros无线配置： Generic multi-radio Atheros wireless config:
这个文件里有两个类型的配置段。wifi-device针对物理wifi接口，wifi-iface配置了一个在wifi-device之上的虚拟接口（需要被驱动支持）。
There are two types of config sections in this file. The 'wifi-device' refers to the physical wifi interface and 'wifi-iface' configures a virtual interface on top of that (if supported by the driver).
无线配置全概括：A full outline of the wireless configuration file with description of each field:
wifi-device的配置项： :
- type
该接口使用的驱动。The driver to use for this interface. - country
国家代码用来指名规定设置。The country code used to determine the regulatory settings. - channel
wifi频道（例如1-14，取决于country设置）The wifi channel (e.g. 1-14, depending on your country setting). - maxassoc
可选：最大的可连接客户端。这个特性只在broadcom芯片组上可选。可选的: Maximum number of associated clients. This feature is supported only on the broadcom chipset. - distance
可选的: Distance between the ap and the furthest client in meters. This feature is supported only on the atheros chipset. - mode
The frequency band (b, g, bg, a). This feature is only supported on the atheros chipset. - diversity
可选的: Enable diversity for the Wi-Fi device. This feature is supported only on the atheros chipset. - rxantenna
可选的: Antenna identifier (0, 1 or 2) for reception. This feature is supported by atheros and some broadcom chipsets. - txantenna
可选的: Antenna identifier (0, 1 or 2) for emission. This feature is supported by atheros and some broadcom chipsets. - txpowerSet the transmission power to be used. The amount is specified in dBm.
wifi-iface的配置： :
- network
选择/etc/config/network中的接口段 Selects the interface section from /etc/config/networkto be used with this interface - device
设置设备名称Set the wifi device name. -
mode
可选模式：Operating mode:- ap
接入点模式Access point mode - sta
客户端模式Client mode - adhoc
Ad-Hoc mode - monitor
监控模式Monitor mode - wds
WDS点对点连接 WDS point-to-point link
- ap
- ssid 设置wifi设备使用的SSID Set the SSID to be used on the wifi device.
- bssid设置BSSID 地址用来设置wds的mac地址。Set the BSSID address to be used for wds to set the mac address of the other wds unit.
- txpower(Deprecated, set in wifi-device) Set the transmission power to be used. The amount is specified in dBm.
-
encryption
加密设置。可设置为以下值：Encryption setting. Accepts the following values:- none
- wep
- psk, psk2
WPA(2) Pre-shared Key - wpa, wpa2
WPA(2) RADIUS
- key, key1, key2, key3, key4(wep, wpa and psk)
WEP key, WPA key (PSK mode) or the RADIUS shared secret (WPA RADIUS mode) - server(wpa)
The RADIUS server ip address - port(wpa)
The RADIUS server port (defaults to 1812) - hidden
0 broadcasts the ssid; 1 disables broadcasting of the ssid - isolate
可选的: Isolation is a mode usually set on hotspots that limits the clients to communicate only with the AP and not with other wireless clients. 0 disables ap isolation (default); 1 enables ap isolation.