RT3070网卡驱动在ferdora 9中的安装

第一步：下载RT3070的无线网卡驱动；解压得到/opt/2011_0719_RT3070_RT3370_RT5370_RT5372_Linux_STA_V2.5.0.3_DPO 

第二步：由于是在虚拟机里面安装，所以不存在驱动移植的问题，一般源码包里面就已经支持了，直接make,在/opt/2011_0719_RT3070_RT3370_RT5370_RT5372_Linux_STA_V2.5.0.3_DPO/os/linux 目录下会有RT3070.KO文件；再make install；

第三步：把/opt/2011_0719_RT3070_RT3370_RT5370_RT5372_Linux_STA_V2.5.0.3_DPO 下的RT2870STA.dat 复制到 /etc/Wireless/ (这个目录需要自己创建).

第四步：cd /opt/2011_0719_RT3070_RT3370_RT5370_RT5372_Linux_STA_V2.5.0.3_DPO/os/linux 这个目录下，insmod RT3070.ko,如果说这个驱动已存在，就remmod RT3070，再继续insmod.

第五步：使用命令，ifconfig -a ,此时会看到 ra0这个无线网卡了，启动无线，ifconfig ra0 up.

第六步：需要移植wireless tools进行联网和配置

1.下载wireless_tools.29.tar.gz

2.解压：#tar zxvf wireless_tools.29.tar.gz

3.修改makefile

PREFIX = /home/leo/wirelesstoolsout

CC = /usr/src/usr/local/arm/3.4.1/bin/arm-linux-gcc

AR = /usr/src/usr/local/arm/3.4.1/bin/arm-linux-ar

RANLIB = /usr/src/usr/local/arm/3.4.1/bin/arm-linux-ranlib

4. 交叉编译：

#cd wireless_tools.29

#make

#make install

5. 复制文件到ARM开发板

拷贝libiw.so.29文件到目标系统/lib/

拷贝用到的几个程序到目标系统的 /bin/ 目录下就可以了

iwpriv、iwconfig、iwlist, iwevent, iwspy

至此wireless_tools移植完成

6.设置ip地址及子网掩码：

# ifconfig ra0 172.31.13.229 netmask 255.255.254.0

7.扫描无线热点

# iwlist ra0 scan

===>rt_ioctl_giwscan. 14(14) BSS returned, data->length = 1526

ra0 Scan completed :

Cell 01 - Address: 00:23:89:08:02:10

Protocol:802.11b/g

ESSID:"IMUST"

Mode:Managed

Channel:1

Quality:42/100 Signal level:-73 dBm Noise level:-115 dBm

Encryption key:off

Bit Rates:18 Mb/s

Cell 02 - Address: 00:23:89:DC:35:B0

Protocol:802.11b/g

ESSID:"IMUST"

Mode:Managed

Channel:1

Quality:42/100 Signal level:-73 dBm Noise level:-115 dBm

Encryption key:off

Bit Rates:18 Mb/s

Cell 03 - Address: 00:23:89:DC:38:90

Protocol:802.11b/g

ESSID:"IMUST"

Mode:Managed

Ghannel:1

Quality:89/100 Signal level:-55 dBm Noise level:-115 dBm

Encryption key:off

Bit Rates:18 Mb/s

第七步：对网卡进行配置,命令行配置

在/etc/sysconfig/network-scripts目录下添加ifcfg-ra0文件，添加如下内容：

DEVICE=ra0

ONBOOT=yes

ROOTPROTO=dhcp

进行以上几步后，可以获得ip了。但后来又出现不能获取ip，并且重复以上也没作用使用 
#dhclient ra0 

备注： 
Linux Force DHCP client (dhclient) to renew ip address 
Linux renew ip command
$ sudo dhclient -r //release ip 释放IP
$ sudo dhclient //获取IP 
Now obtain fresh IP:
$ sudo dhclient 
There is no need to restart network service. Above command should work with any Linux distro such as RHEL, Fedora, CentOS, Ubuntu and others. On a related note you can also try out the following commands:
# ifdown eth0
# ifup eth0
# /etc/init.d/network restart 
OR
# /etc/init.d/networking restart

通过以上步骤就可以连接外网了。

如果还是无法上网就做一下几步：

1、/etc/sysconfig/network-scripts目录下添加ifcfg-ra0文件，添加如下内容：
DEVICE=ra0
ONBOOT=yes
ROOTPROTO=dhcp
2、修改/etc/resolv.conf
nameserver 192.168.0.1

3、重新启动网络服务
/etc/init.d/network restart
4、ifconfig ra0 192.168.0.123
5、添加网关或者掩码
route add default gw 192.168.0.1
route add default gw 192.168.0.1 netmask 255.255.255.0