今天的又在做毕设。
昨天把网页设置的部分完了一点。
今天想添加新功能，虚拟AP，AP模式和基础网模式互换
Part.1 虚拟AP
就是用一个路由器广播多个ssid
这样的可以完成不同用户的独立控制。
比如呢。我给家里的wifi分隔一下，一个是Myself，我自己用的。另一个是Guest,用来给访客用
给自己的流量自然要多分一点，给访客的就让他们能够看网页就好啦~~~
这个功能在/etc/config/wireless中有设置
先看wireless里面的config信息
config wifi-device 'radio0'
option type 'mac80211'
option hwmode '11ng'
option path 'platform/ar933x_wmac'
list ht_capab 'SHORT-GI-20'
list ht_capab 'SHORT-GI-40'
list ht_capab 'RX-STBC1'
list ht_capab 'DSSS_CCK-40'
option disabled '0'
option channel 'auto'
option htmode 'HT40+'
option country 'CN'
option noscan '1'
config wifi-iface
option device 'radio0'
option network 'lan'
option mode 'ap'
option encryption 'none'
option ssid 'pipi1net'
config wifi-iface
option device 'radio0'
option network 'lan'
option mode 'ap'
option encryption 'none'
option ssid 'pipi2net'
| 参考资料在这里：Wireless configuration | 利用nodogsplash 打造多节点超强无线广告机 |
我这里就是建立了两个不同的ap
一个是pipi1net，另一个是pipi2net
用uci实现
添加一个虚拟ap
uci add wireless wifi-iface
uci set wireless.@wifi-iface[1].device=radio0
uci set wireless.@wifi-iface[1].network=lan
uci set wireless.@wifi-iface[1].mode=ap
uci set wireless.@wifi-iface[1].encryption=none
uci set wireless.@wifi-iface[1].ssid=pipi2net
uci commit
删除虚拟ap
uci delete wireless.@wifi-iface[1]
uci commit
记得如果要立即看到效果的话要添加/etc/init.d/network restart啊啊啊
Part.2 基础网和AP模式互换
基础网模式就是wifi-client，就是像手机一样用wifi连接在某个ap上作为从机
AP模式是wifi-AP
| 主要参考资料：Routed AP | Routed Client |
我的这个模块拿到手里面的时候就是默认的AP模式
改为基础网（sta）模式要修改的地方 （修改第一个wifi ap）
uci del wireless.@wifi-device[0].disabled
uci del wireless.@wifi-iface[0].network
uci set wireless.@wifi-iface[0].mode=sta
uci commit wireless
wifi
PS：wifi命令相当于原来的/etc/init.d/network restart
然后就开始扫描空间中的wifi信号
iwlist scan
官网资料上面说如果出现了Devic Busy或者资源被占用之类的事情
可以执行
killall -9 wpa_supplicant
iwlist scan
我在图书馆的扫描结果如下：
wlan0 Scan completed :
Cell 01 - Address: 00:1F:64:EB:4F:78
Channel:1
Frequency:2.412 GHz (Channel 1)
Quality=29/70 Signal level=-81 dBm
Encryption key:off
ESSID:"Cert_Download"
Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 6 Mb/s
9 Mb/s; 12 Mb/s; 18 Mb/s
Bit Rates:24 Mb/s; 36 Mb/s; 48 Mb/s; 54 Mb/s
Mode:Master
Extra:tsf=00000011157e1d06
Extra: Last beacon: 740ms ago
IE: Unknown: 000D436572745F446F776E6C6F6164
IE: Unknown: 010882848B960C121824
IE: Unknown: 030101
IE: Unknown: 0706434E20010D14
IE: Unknown: 2A0100
IE: Unknown: 32043048606C
IE: Unknown: 2D1AAD0103FFFF000000000000000000000000000000040
IE: Unknown: 331AAD0103FFFF000000000000000000000000000000040
IE: Unknown: 3D160100170000000000000000000000000000000000000
IE: Unknown: 34160100170000000000000000000000000000000000000
IE: Unknown: 4A0E14000A002C01C800140005001900
IE: Unknown: 7F0101
IE: Unknown: DD180050F2020101060003A4000027A4000042435E00623
IE: Unknown: DD0900037F01010000FF7F
Cell 02 - Address: 00:1F:64:EC:4F:78
Channel:1
Frequency:2.412 GHz (Channel 1)
Quality=31/70 Signal level=-79 dBm
Encryption key:off
ESSID:"BUPT-3"
Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 6 Mb/s
9 Mb/s; 12 Mb/s; 18 Mb/s
Bit Rates:24 Mb/s; 36 Mb/s; 48 Mb/s; 54 Mb/s
Mode:Master
Extra:tsf=4b000011157e26e8
Extra: Last beacon: 710ms ago
IE: Unknown: 0006425550542D33
IE: Unknown: 010882848B960C121824
IE: Unknown: 030101
IE: Unknown: 0706434E20010D14
IE: Unknown: 2A0100
IE: Unknown: 32043048606C
IE: Unknown: 2D1AAD0103FFFF000000000000000000000000000000040
IE: Unknown: 331AAD0103FFFF000000000000000000000000000000040
IE: Unknown: 3D160100170000000000000000000000000000000000000
IE: Unknown: 34160100170000000000000000000000000000000000000
IE: Unknown: 4A0E14000A002C01C800140005001900
IE: Unknown: 7F0101
IE: Unknown: DD180050F2020101060003A4000027A4000042435E00623
IE: Unknown: DD0900037F01010000FF7F
Cell 03 - Address: 00:1F:64:ED:4F:78
Channel:1
Frequency:2.412 GHz (Channel 1)
Quality=30/70 Signal level=-80 dBm
Encryption key:on
ESSID:"eID_WAPI"
Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 6 Mb/s
9 Mb/s; 12 Mb/s; 18 Mb/s
Bit Rates:24 Mb/s; 36 Mb/s; 48 Mb/s; 54 Mb/s
Mode:Master
Extra:tsf=32000011157e379a
Extra: Last beacon: 2000ms ago
IE: Unknown: 00086549445F57415049
IE: Unknown: 010882848B960C121824
IE: Unknown: 030101
IE: Unknown: 0706434E20010D14
IE: Unknown: 2A0100
IE: Unknown: 44140100010000147201010000147201001472010000
IE: Unknown: 32043048606C
IE: Unknown: 2D1AAD0103FFFF000000000000000000000000000000040
IE: Unknown: 331AAD0103FFFF000000000000000000000000000000040
IE: Unknown: 3D160100170000000000000000000000000000000000000
IE: Unknown: 34160100170000000000000000000000000000000000000
IE: Unknown: 4A0E14000A002C01C800140005001900
IE: Unknown: 7F0101
IE: Unknown: DD180050F2020101060003A4000027A4000042435E00623
IE: Unknown: DD0900037F01010000FF7F
Cell 04 - Address: 3E:4B:D6:A1:34:28
Channel:6
Frequency:2.437 GHz (Channel 6)
Quality=26/70 Signal level=-84 dBm
Encryption key:on
ESSID:"AWIN-JPMT21CIJMJ"
Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 6 Mb/s
9 Mb/s; 12 Mb/s; 18 Mb/s
Bit Rates:24 Mb/s; 36 Mb/s; 48 Mb/s; 54 Mb/s
Mode:Master
Extra:tsf=00000002ea7a06c0
Extra: Last beacon: 410ms ago
.........................实在太长了就截取到这里吧
于是呢我们就能找到想要加入的wfi网络的SSID和加密协议了~
根据这个信息使用UCI命令再次修改/etc/config/wireless
尝试连接至BUPT-3
uci set wireless.@wifi-iface[0].ssid=BUPT-3
uci set wireless.@wifi-iface[0].network=wan
uci commit
设置之后的/etc/cofig/wireless文件wifi-iface[0]部分内容如下
config wifi-iface
option device 'radio0'
option encryption 'none'
option mode 'sta'
option network 'wan'
option ssid 'BUPT-3'
执行wifi命令之后出现一下信息
[ 1275.460000] wlan0: authenticate with 00:1f:64:ec:4f:78
[ 1275.470000] wlan0: send auth to 00:1f:64:ec:4f:78 (try 1/3)
[ 1275.530000] wlan0: authenticated
[ 1275.540000] wlan0: associate with 00:1f:64:ec:4f:78 (try 1/3)
[ 1275.550000] wlan0: RX AssocResp from 00:1f:64:ec:4f:78 (capab=0x421 status=0
aid=9)
[ 1275.560000] wlan0: associated
[ 1275.560000] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready
成功变为基础网模式
再次切换为AP模式只需恢复原有config即可
uci set wireless.@wifi-iface[0].network=lan
uci set wireless.@wifi-iface[0].ssid=pipinet
uci set wireless.@wifi-iface[0].mode=ap
uci commit