fl2440添加3070实现无线上网

栏目: 服务器 · 发布时间: 7年前

内容简介:fl2440添加3070实现无线上网

内核需要开启如下配置,在我移植的 3.0.56 内核已经集成了这些配置

[*] Networking support  --->  
    <*>   cfg80211 - wireless configuration API
    [*]     enable powersave by default
    [*]     cfg80211 wireless extensions compatibility
    [*]   Wireless extensions sysfs files
    {*}   Common routines for IEEE802.11 drivers
    <*>   Generic IEEE 802.11 Networking Stack (mac80211) 
Device Drivers  --->
    [*]   Include in-kernel firmware blobs in kernel binary
    [*] Network device support  --->
        [*]   Wireless LAN  --->
            <*>   Ralink driver support  --->
            <*>   Ralink rt27xx/rt28xx/rt30xx (USB) support
            [*]   Ralink debug output

安装驱动

插入 3070 网卡后,内核调试信息

> dmesg
usb 1-1.1: new full speed USB device number 5 using s3c2410-ohci
usb 1-1.1: New USB device found, idVendor=148f, idProduct=3070
usb 1-1.1: New USB device strings: Mfr=1, Product=2, SerialNumber=3
usb 1-1.1: Product: 802.11 n WLAN
usb 1-1.1: Manufacturer: Ralink

下载对应的 3070 固件到 /lib/firmware 目录下,文件名保持 rt2870.bin

wget https://coding.net/u/sfantree/p/self_use_OSS/git/raw/master/source/rt2870.bin

开启无线网卡

ifconfig wlan0 up

ifconfig 打印出 wlan0 信息

>: ifconfig
wlan0     Link encap:Ethernet  HWaddr 00:A1:B0:40:6F:72  
          UP BROADCAST MULTICAST  MTU:1500  Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:0 (0.0 B)  TX bytes:0 (0.0 B)

连接wifi

上面的步骤只是安装驱动,让无线网卡工作还要”插上网线”

移植openssl库

wget https://coding.net/u/sfantree/p/self_use_OSS/git/raw/master/source/openssl-1.0.0s.tar.gz
tar zxvf openssl-1.0.0s.tar.gz
cd openssl-1.0.0s
./config no-asm shared --prefix=`pwd`/_install

修改 Makefile 相应字段

CROSS=/opt/buildroot-2012.08/arm920t/usr/bin/arm-linux-
CC= $(CROSS)gcc
AR= $(CROSS)ar $(ARFLAGS) r
RANLIB= $(CROSS)ranlib
NM= $(CROSS)nm

继续编译

make
make install

移植wpa_supplicant

编译

wget https://coding.net/u/sfantree/p/self_use_OSS/git/raw/master/source/wpa_supplicant-0.7.3.tar.gz
tar zxvf wpa_supplicant-0.7.3.tar.gz
cd wpa_supplicant-0.7.3/wpa_supplicant
cp defconfig .config

修改 .config 相应字段,其中 OPENSSL_PATH 为上一步 openssl 的安装路径

CROSS=/opt/buildroot-2012.08/arm920t/usr/bin/arm-linux-
OPENSSL_PATH=/root/fl2440/3rdapp/openssl/openssl-1.0.0s/_install
CC= $(CROSS)gcc -L$(OPENSSL_PATH)/lib/openssl
CFLAGS += -I$(OPENSSL_PATH)/include
LIBS += -L$(OPENSSL_PATH)lib/openssl

make 过后会生成如下几个文件,将其拷贝到开发板 /usr/bin

  • wpa_cli (打酱油)
  • wpa_passphrase (一键生成配置文件)
  • wpa_supplicant (连接WiFI)

查看相关依赖库,可见 wpa_supplicant 前置依赖属于 openssllibcrypto.solibssl.so

> arm-linux-readelf -d ./wpa_supplicant
Dynamic section at offset 0x471e8 contains 24 entries:
  Tag        Type                         Name/Value
 0x00000001 (NEEDED)                     Shared library: [libssl.so.1.0.0]
 0x00000001 (NEEDED)                     Shared library: [libcrypto.so.1.0.0]
 0x00000001 (NEEDED)                     Shared library: [libdl.so.0]
 0x00000001 (NEEDED)                     Shared library: [libc.so.0]
...

生成配置文件

wpa_supplicant.conf 配置文件保留着需要连接 APSSIDkey 等信息,可以使用 wpa_supplicant.conf 一键生成

wpa_passphrase dlink-301 cnmbcnmb >> /etc/wpa_supplicant.conf

wpa_supplicant.conf 还需要稍微修改一下

ctrl_interface=/var/run/wpa_supplicant
network={
    ssid="dlink-301"
    key_mgmt=WPA-PSK
    proto=WPA2
    group=TKIP CCMP
    pairwise=TKIP CCMP
    psk="cnmbcnmb"
    #psk=56466f08ff364ccbbec3266aeda88cb69619a3914834966cc7e90098985d225c
}

启用 wpa_supplicant

wpa_supplicant -B -d -Dwext -i wlan0 -c /etc/wpa_supplicant.conf

网络配置

由于还没有开启 DHCP ,所以需要手动分配 IP 等各种配置,这里配置由你的网络环境决定,后面会介绍使用 DHCP

#配置IP地址
ifconfig wlan0 192.168.0.168 
#配置默认网关
route add default gw 192.168.0.1
#配置DNS
echo "nameserver 114.114.114.114" > /etc/resolv.conf

接下来进行 ping 测试

>: ping sfantree.com
PING sfantree.com (123.56.22.253): 56 data bytes
64 bytes from 123.56.22.253: seq=0 ttl=51 time=34.019 ms
64 bytes from 123.56.22.253: seq=1 ttl=51 time=24.689 ms
64 bytes from 123.56.22.253: seq=2 ttl=51 time=25.622 ms
64 bytes from 123.56.22.253: seq=3 ttl=51 time=65.763 ms
64 bytes from 123.56.22.253: seq=4 ttl=51 time=74.489 ms

开启DHCP

busybox 已经集成了 DHCP 的客户端和服务端,源码编译过后的 examples/udhcp/simple.script 作为 DHCP 客户端的示例配置文件如下,将其重命名为 /usr/share/udhcpc/default.script ,特别注意必须给 default.script 执行权限

#!/bin/sh
# udhcpc script edited by Tim Riker <Tim@Rikers.org>

RESOLV_CONF="/etc/resolv.conf"

[ -n "$1" ] || { echo "Error: should be called from udhcpc"; exit 1; }

NETMASK=""
[ -n "$subnet" ] && NETMASK="netmask $subnet"
BROADCAST="broadcast +"
[ -n "$broadcast" ] && BROADCAST="broadcast $broadcast"

case "$1" in
    deconfig)
        echo "Setting IP address 0.0.0.0 on $interface"
        ifconfig $interface 0.0.0.0
        ;;

    renew|bound)
        echo "Setting IP address $ip on $interface"
        ifconfig $interface $ip $NETMASK $BROADCAST

        if [ -n "$router" ] ; then
            echo "Deleting routers"
            while route del default gw 0.0.0.0 dev $interface ; do
                :
            done

            metric=0
            for i in $router ; do
                echo "Adding router $i"
                route add default gw $i dev $interface metric $((metric++))
            done
        fi

        echo "Recreating $RESOLV_CONF"
        echo -n > $RESOLV_CONF-$$
        [ -n "$domain" ] && echo "search $domain" >> $RESOLV_CONF-$$
        for i in $dns ; do
            echo " Adding DNS server $i"
            echo "nameserver $i" >> $RESOLV_CONF-$$
        done
        mv $RESOLV_CONF-$$ $RESOLV_CONF
        ;;
esac

exit 0

执行 udhcpc -i wlan0 之后即可自动获取 IP ,执行这个命令后 udhcp 会以守护进程方式在后台运行

>: udhcpc -i wlan0
udhcpc (v1.20.2) started
Setting IP address 0.0.0.0 on wlan0
Sending discover...
Sending select for 192.168.0.103...
Lease of 192.168.0.103 obtained, lease time 604800
Setting IP address 192.168.0.103 on wlan0
Deleting routers
route: SIOCDELRT: No such process
Adding router 192.168.0.1
Recreating /etc/resolv.conf
 Adding DNS server 192.168.0.1

以上所述就是小编给大家介绍的《fl2440添加3070实现无线上网》,希望对大家有所帮助,如果大家有任何疑问请给我留言,小编会及时回复大家的。在此也非常感谢大家对 码农网 的支持!

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