飛凌2440開發板製做路由器

時間  2021-01-30
標籤 html linux 算法 shell api bash 服務器 網絡 less 欄目 網絡硬件 简体版
原文   原文鏈接

原文連接：http://www.cnblogs.com/NickQ/p/8976054.html 環境：Linux3.0內核 RT3070（無線） + DM9000（有線）html

在s3c2440上實現SoftAP模式

  • 配置內核

wifi/ConfigKernel_AP_1

wifi/ConfigKernel_AP_2

  • 配置完內核開始編譯後，報以下錯誤。

解決方法：make clean後從新編譯。 參考：https://blog.csdn.net/tonkeytong/article/details/52672782linux

[nick@XQLY linux-3.0]$ make
  CHK     include/linux/version.h
  CHK     include/generated/utsrelease.h
make[1]: 「include/generated/mach-types.h」是最新的。
  CALL    scripts/checksyscalls.sh
  CHK     include/generated/compile.h
  LD      fs/nfs/nfs.o
fs/nfs/client.o: file not recognized: File truncated
make[2]: *** [fs/nfs/nfs.o] 錯誤 1
make[1]: *** [fs/nfs] 錯誤 2
make: *** [fs] 錯誤 2

  • libnl 移植

Hostapd依賴於openssl與libnl兩個庫。 下載解壓算法

wget  
tar zvxf libnl-3.2.25.tar.gz
cd ./libnl-3.2.25
mkdir install

配置並編譯shell

./configure --prefix=`pwd`/install --build=i686-pc-linux --host=arm-linux CC=/opt/xtools/arm920t/bin/arm-linux-gcc AS=/opt/xtools/arm920t/bin/arm-linux-as  AR=/opt/xtools/arm920t/bin/arm-linux-ar LD=/opt/xtools/arm920t/bin/arm-linux-ld NM=/opt/xtools/arm920t/bin/arm-linux-nm RANLIB=/opt/xtools/arm920t/bin/arm-linux-ranlib OBJDUMP=/opt/xtools/arm920t/bin/arm-linux-objdump STRIP=/opt/xtools/arm920t/bin/arm-linux-strip
    
    make && make install

  • openssl 移植

下載解壓api

wget  
tar zxvf openssl-0.9.8zf.tar.gz
cd ./openssl-0.9.8zf
patch -p1 < ../patch/openssl-0.9.8zf-tls-extensions.patch
mkdir install

修改Makefilebash

將
OPTIONS= no-camellia no-capieng no-cms no-gmp no-jpake no-krb5 no-mdc2 no-montasm no-rc5 no-rfc3779 no-seed no-shared no-zlib no-zlib-dynamic
CONFIGURE_ARGS=dist
改成
#OPTIONS= no-camellia no-capieng no-cms no-gmp no-jpake no-krb5 no-mdc2 no-montasm no-rc5 no-rfc3779 no-seed no-shared no-zlib no-zlib-dynamic
CC=/opt/xtools/arm920t/bin/arm-linux-gcc
CONFIGURE_ARGS=dist
修改如下變量
INSTALLTOP= /home/nick/fl2440/3rdparty/wireless/openssl/openssl-0.9.8zf/install
OPENSSLDIR= /home/nick/fl2440/3rdparty/wireless/openssl/openssl-0.9.8zf/install
CC= /opt/xtools/arm920t/bin/arm-linux-cc
AR= /opt/xtools/arm920t/bin/arm-linux-ar $(ARFLAGS) r
ARD= /opt/xtools/arm920t/bin/arm-linux-ar $(ARFLAGS) d
RANLIB= /opt/xtools/arm920t/bin/arm-linux-ranlib

編譯安裝服務器

sudo make
sudo make install

  • Hostapd 移植

hostapd 是一個用戶態用於AP和認證服務器的守護進程。它實現了IEEE 802.11相關的接入管理，IEEE 802.1X/WPA/WPA2/EAP 認證, RADIUS客戶端，EAP服務器和RADIUS 認證服務器。Linux下支持的驅動有：Host AP，madwifi，基於mac80211的驅動。 採用腳本，編譯安裝網絡

#!/bin/bash
    
    # Description:  
    # This shell script used download and compile hostapd for ARM 
    
    PROJ_PATH=`pwd`
    
    OPENSSL_PATH=`pwd`/../openssl/
    LIBNL_PATH=`pwd`/../libnl/
    
    if [ -z $CROSSTOOL ] ; then
       CROSSTOOL=/opt/xtools/arm920t/bin/arm-linux-
    fi
    
    function msg_banner()
    {
        echo ""
        echo "+-----------------------------------------------------------------------"
        echo "|  $1 "
        echo "+-----------------------------------------------------------------------"
        echo ""
    }
    
    function check_result()
    {
        if [ $? != 0 ] ; then
           echo ""
           echo "+-----------------------------------------------------------------------"
           echo "|  $1 "
           echo "+-----------------------------------------------------------------------"
           echo ""
           exit ;
        fi
    }
    
    function export_cross()
    {
        # export cross toolchain
        export CC=${CROSSTOOL}gcc
        export AS=${CROSSTOOL}as
        export AR=${CROSSTOOL}ar
        export LD=${CROSSTOOL}ld
        export NM=${CROSSTOOL}nm
        export RANLIB=${CROSSTOOL}ranlib
        export OBJDUMP=${CROSSTOOL}objdump
        export STRIP=${CROSSTOOL}strip
    
        # export cross configure 
        export CONFIG_CROSS=" --build=i686-pc-linux --host=arm-linux "
    
        # Clear LDFLAGS and CFLAGS
        export LDFLAGS=
        export CFLAGS=
    }
    
    function compile_hostapd()
    {
        SRC_NAME=hostapd-2.5
        PACK_SUFIX=tar.gz
    
    
        if [ -f ${PREFIX_PATH}/${IMG_NAME} ] ; then
            return 0;
        fi
    
        msg_banner "Start cross compile $SRC_NAME "
    
        if [ ! -f ${SRC_NAME}.${PACK_SUFIX} ] ; then
            wget https://w1.fi/releases/${SRC_NAME}.${PACK_SUFIX}
            check_result "ERROR: download ${SRC_NAME} failure"
        fi
    
        tar -xzf ${SRC_NAME}.${PACK_SUFIX}
        cd ${SRC_NAME}/hostapd
    
        cp defconfig .config
    
        #sed -i -e "s|^.*openssl/include.*|CFLAGS += -I${OPENSSL_PATH}/install/include|g" .config 
        #sed -i -e "s|^.*openssl/lib.*|LIBS += -L${OPENSSL_PATH}/install/lib|g" .config 
        
        sed -i -e "s|^.*libnl include files.*|CFLAGS += -I${LIBNL_PATH}/install/include/libnl3|g" .config 
        sed -i -e "s|^.*libnl library files.*|LIBS += -L${LIBNL_PATH}/install/lib|g" .config 
    
        sed -i -e "s|^.*CONFIG_LIBNL32=.*|CONFIG_LIBNL32=y|g" .config 
    
        export PKG_CONFIG_PATH=${LIBNL_PATH}/install/lib/pkgconfig/:$PKG_CONFIG_PATH
    
        export CFLAGS="-I${OPENSSL_PATH}/install/include"
        export LIBS="-L${OPENSSL_PATH}/install/lib"
    
        make  
    
        cp hostapd ${PROJ_PATH}/
        cp $LIBNL_PATH/install/lib/libnl-3.so.200.20.0 ${PROJ_PATH}/libnl-3.so.200 
        cp $LIBNL_PATH/install/lib/libnl-genl-3.so.200.20.0 ${PROJ_PATH}/libnl-genl-3.so.200
    
        cd -
    }
    
    
    export_cross
    
    if [ ! -d $OPENSSL_PATH/install/lib ] ; then
       cd $OPENSSL_PATH
       ./build.sh
       cd -
    else 
        msg_banner "openssl already cross compiled!"
    fi
    
    
    
    if [ ! -d $LIBNL_PATH/install/lib ] ; then
       cd $LIBNL_PATH
       ./build.sh
       cd -
    else 
        msg_banner "libnl already cross compiled!"
    fi
    
    
    compile_hostapd

將生成的hostapd,和庫拷到開發板/bin與/lib目錄下，並給予可執行權限。這裏採用lszrz+tftp方式less

[nick@XQLY hostapd]$ sz hostapd
rz
Starting zmodem transfer.  Press Ctrl+C to cancel.
Transferring hostapd...
  100%    1768 KB    1768 KB/sec    00:00:01       0 Errors 
[nick@NickQ_fl2440 bin]# tftp -gr hostapd 192.168.110.1
hostapd              100% |*******************************|  1768k  0:00:00 ETA
[nick@NickQ_fl2440 bin]# chmod a+x hostapd

能夠將hostapd目錄下的hostapd.conf修改後拷貝到開發板/etc下，也能夠直接新建一個，這裏選擇直接新建。 在開發板/etc目錄下建立這個文件hostapd.conf。ui

interface=wlan0 //網絡接口名稱
ssid=nick666 //熱點名稱
driver=nl80211  //默認使用nl80211無線驅動
channel=3   //設定無線頻道
hw_mode=g   //使用80211g協議標準 , 有效的值取決於硬件,一般:a, b, g
ignore_broadcast_ssid=0 //開啓或禁用廣播ssid
auth_algs=1 /*指定OSA認證算法, auth_algs=1 只支持 WPA2 身份驗證算法。*/
/*auth_algs=2 表示支持 WEP。永遠不要使用有線等效加密 (wired equivalent privacy, WEP)，由於它很是容易破解，而且多年前就已經被徹底破解了。*/
/*auth_algs=3 表示支持這兩種方式。*/
wpa=3   /*指定WPA/WPA2類型, wpa=2 僅支持 WPA2。wpa=1 表示支持 WPA1，而 wpa=3 表示兩者都支持。*/
wpa_key_mgmt=WPA-PSK    //指定您想支持的加密密鑰算法
wpa_passphrase=12345678 //指定認證密鑰
wpa_pairwise=TKIP   /*啓用了WPA或WPA2則須要指定wpa_pairwise或rsn_pairwise。*/
rsn_pairwise=CCMP   /*wpa_pairwise 和 rsn_pairwise控制支持加密數據的密鑰，您可使用 CCMP、TKIP 或二者均使用*/

啓用hostapd

hostapd -B /etc/hostapd.conf

ifconfig觀察發現，多了網卡

mon.wlan0 Link encap:UNSPEC  HWaddr 00-A1-B0-40-6F-1E-00-00-00-00-00-00-00-00-00-00  
          UP BROADCAST RUNNING 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)

udhcpd啓用DHCP分配IP

[nick@NickQ_fl2440 ~]# udhcpd -f /etc/udhcpd.conf
udhcpd: started, v1.27.1
phy0 -> rt2800_txdone_entry_check: Warning - TX status report missed for queue 2 entry 0
udhcpd: sending OFFER of 192.168.10.20
udhcpd: sending OFFER of 192.168.10.20
udhcpd: sending ACK to 192.168.10.20
udhcpd: sending ACK to 192.168.10.20

udhcpd -f 選項是保持在前臺運行。去掉-f則轉爲後臺。

iptables移植

使用腳本編譯安裝

#!/bin/bash


# Description:  
# This shell script used download and compile iptables for ARM

PREFIX_PATH=`pwd`/

if [ -z $CROSSTOOL ] ; then
   CROSSTOOL=/opt/xtools/arm920t/bin/arm-linux-
fi

function msg_banner()
{
    echo ""
    echo "+-----------------------------------------------------------------------"
    echo "|  $1 "
    echo "+-----------------------------------------------------------------------"
    echo ""
}

function check_result()
{
    if [ $? != 0 ] ; then
       echo ""
       echo "+-----------------------------------------------------------------------"
       echo "|  $1 "
       echo "+-----------------------------------------------------------------------"
       echo ""
       exit ;
    fi
}

function export_cross()
{
    # export cross toolchain
    export CC=${CROSSTOOL}gcc
    export AS=${CROSSTOOL}as
    export AR=${CROSSTOOL}ar
    export LD=${CROSSTOOL}ld
    export NM=${CROSSTOOL}nm
    export RANLIB=${CROSSTOOL}ranlib
    export OBJDUMP=${CROSSTOOL}objdump
    export STRIP=${CROSSTOOL}strip

    # export cross configure 
    export CONFIG_CROSS=" --build=i686-pc-linux --host=arm-linux "

    # Clear LDFLAGS and CFLAGS
    export LDFLAGS=
    export CFLAGS=
}

function compile_iptables()
{
    SRC_NAME=iptables-1.4.21
    PACK_SUFIX=tar.bz2
    IMG_NAME=iptables

    if [ -f ${PREFIX_PATH}/${IMG_NAME} ] ; then
        return 0;
    fi

    msg_banner "Start cross compile $SRC_NAME "

    if [ ! -f ${SRC_NAME}.${PACK_SUFIX} ] ; then
        wget http://www.netfilter.org/projects/iptables/files/${SRC_NAME}.${PACK_SUFIX}
        check_result "ERROR: download ${SRC_NAME} failure"
    fi

    tar -xjf ${SRC_NAME}.${PACK_SUFIX}
    cd ${SRC_NAME}

    ./configure --prefix=${PREFIX_PATH} ${CONFIG_CROSS} --enable-static --disable-shared --disable-ipv6 --disable-largefile  
    check_result "ERROR: configure ${SRC_NAME} failure"

    make 
    check_result "ERROR: compile ${SRC_NAME} failure"

    ${STRIP} iptables/xtables-multi
    cp iptables/xtables-multi ${PREFIX_PATH}/${IMG_NAME}

    cd -
}


export_cross

compile_iptables

再理解一次CFLAGS和LDFLAGS:通常咱們經過CFLAGS的 -I 選項告訴編譯器所依賴的第三方的庫的頭文件在哪裏，經過LDFLAGS的-L選項告訴連接器這些庫的庫文件在哪裏；還有LIBS是告訴連接器要連接哪些庫文件。簡單地說，LDFLAGS是告訴連接器從哪裏尋找庫文件，而LIBS是告訴連接器要連接哪些庫文件。有時候LIBS指定了卻找不到庫時能夠試試LDFLAGS。

[nick@NickQ_fl2440 ~]# iptables -t nat -A POSTROUTING -o eth0 -j MASQUERADE
[nick@NickQ_fl2440 ~]# iptables -A FORWARD -i eth0 -o wlan0 -m state --state RELATED,ESTABLISH -j ACCEPT
[nick@NickQ_fl2440 ~]# iptables -A FORWARD -i wlan0 -o eth0 -j ACCEPT

自動啓動 在開發板/etc/init.d/中，建立啓動腳本.以S?? ,如開頭S30_wifiAP

#!/bin/sh

ifconfig wlan0 192.168.10.1 netmask 255.255.255.0 up

iptables -t nat -A POSTROUTING -o eth0 -j MASQUERADE
iptables -A FORWARD -i eth0 -o wlan0 -m state --state RELATED,ESTABLISH -j ACCEPT
iptables -A FORWARD -i wlan0 -o eth0 -j ACCEPT

hostapd -B /etc/hostapd.conf

udhcpd  /etc/udhcpd.conf
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