openwrt 的/etc/config/wireless 文件解析

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： Options for the wifi-device :

• 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： Options for the wifi-iface :

• 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
• 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.

原文：http://www.cnblogs.com/yinsua/p/4561530.html