OpenWrt wifi设置

1.启用无线网卡

重置配置文件，如果是新系统没有进行过相关设置可以跳过

rm -f /etc/config/wireless; wifi config instead

启用无线网卡

uci set wireless.@wifi-device[0].disabled="0"
uci commit wireless
wifi

提示：这里是设置第一块无线网卡。
如果要设置第二块网卡，如下操作

uci set wireless.@wifi-device[1].disabled="0"
uci commit wireless
wifi wlan1

2.无线网络设置

执行iw dev命令显示如下格式信息

phy#0
        Interface wlan0
                ifindex 5
                wdev 0x1
                addr ab:12:23:dc:03:45
                type managed
                txpower 20.00 dBm

搜索无线网络

iw dev wlan0 scan

显示如下格式无线网络信息，若有多个无线网络，会显示多个这样格式的信息

BSS c8:d5:fe:c8:61:b0(on wlan0) 
        TSF: 24324848870 usec (0d, 06:45:24)
        freq: 2412
        beacon interval: 100 TUs
        capability: ESS (0x0411)
        signal: -72.00 dBm
        last seen: 140 ms ago
        Information elements from Probe Response frame:
        SSID: Violetta
        HT capabilities:
                Capabilities: 0x102c
                        HT20
                        SM Power Save disabled
                        RX HT20 SGI
                        No RX STBC
                        Max AMSDU length: 3839 bytes
                        DSSS/CCK HT40
                Maximum RX AMPDU length 32767 bytes (exponent: 0x002)
                Minimum RX AMPDU time spacing: 16 usec (0x07)
                HT RX MCS rate indexes supported: 0-7
                HT TX MCS rate indexes are undefined
        HT operation:
                 * primary channel: 13
                 * secondary channel offset: no secondary
                 * STA channel width: 20 MHz
        RSN:     * Version: 1
                 * Group cipher: CCMP
                 * Pairwise ciphers: CCMP
                 * Authentication suites: PSK
                 * Capabilities: 16-PTKSA-RC 1-GTKSA-RC (0x000c)

编辑/etc/config/network，添加修改以下内容

config interface 'wwan'
        option proto 'dhcp'

编辑/etc/config/wireless，添加修改以下内容

config wifi-iface 'default_radio0'
        option device 'radio0'
        option network 'wwan'
        option mode 'sta'
        option ssid 'Violetta'
        option encryption 'psk2'
        option bssid 'c8:d5:fe:c8:61:b0'
        option key 'YourWifiPassword'

编辑/etc/config/firewall，找到zone wan，添加一行list network 'wwan',如下

config zone
        option name             wan
        list   network          'wan'
        list   network          'wan6'
        list   network          'wwan'
        option input            REJECT
        option output           ACCEPT
        option forward          REJECT
        option masq             1
        option mtu_fix          1

3.启用wifi

wifi; /etc/init.d/firewall restart

查看信息

iw dev

phy#0
        Interface wlan0
                ifindex 5
                wdev 0x1
                addr ab:12:23:dc:03:45
                ssid Violetta
                type managed
                channel 13 (2472 MHz), width: 20 MHz, center1: 2472 MHz
                txpower 20.00 dBm