MINI2440 Hostapd移植笔记

移植环境：

PC:fedora 14

MINI2440

无线网卡型号：RTL8188CU

 

手头的无线网卡芯片的realteck的RTL8188CU芯片，从官网下载驱动移植好后成功驱动网卡，但在移植Hostapd是出现问题总是提示invalid/unknown driver'nl80211'，后来多方查阅资料发现这款芯片得用驱动包里自带的专用hostapd。

现记录移植过程如下：

找到官方驱动包里的hostapd，进行如下操作

cp defconfig .config

对 .config进行如下修改：

去掉CONFIG_DRIVER_RTW=y前的注释

注释掉#CONFIG_DRIVER_NL80211=y

去掉CONFIG_WPS=y前注释

去除CONFIG_IEEE80211N=y前注释

 

修改Makefile

将

ifndef CC

CC=gcc

Endif

改为CC=arm-linux-gcc

保存后make

 

将生成的hostapd和hostapd_cli文件复制到开发版的/bin目录

 

编辑hostapd.conf文件内容如下

##### hostapd configuration file ##############################################

interface=wlan0

ctrl_interface=/var/run/hostapd

ssid=mini2440

channel=6

wpa=2

wpa_passphrase=12345678

#bridge=br0

##### Wi-Fi Protected Setup (WPS) #############################################

eap_server=1

# WPS state

# 0 = WPS disabled (default)

# 1 = WPS enabled, not configured

# 2 = WPS enabled, configured

wps_state=2

uuid=12345678-9abc-def0-1234-56789abcdef0

# Device Name

# User-friendly description of device; up to 32 octets encoded in UTF-8

device_name=RTL8192CU

# Manufacturer

# The manufacturer of the device (up to 64 ASCII characters)

manufacturer=Realtek

# Model Name

# Model of the device (up to 32 ASCII characters)

model_name=RTW_SOFTAP

# Model Number

# Additional device description (up to 32 ASCII characters)

model_number=WLAN_CU

# Serial Number

# Serial number of the device (up to 32 characters)

serial_number=12345

# Primary Device Type

# Used format: <categ>-<OUI>-<subcateg>

# categ = Category as an integer value

# OUI = OUI and type octet as a 4-octet hex-encoded value; 0050F204 for

#       default WPS OUI

# subcateg = OUI-specific Sub Category as an integer value

# Examples:

#   1-0050F204-1 (Computer / PC)

#   1-0050F204-2 (Computer / Server)

#   5-0050F204-1 (Storage / NAS)

#   6-0050F204-1 (Network Infrastructure / AP)

device_type=6-0050F204-1

# OS Version

# 4-octet operating system version number (hex string)

os_version=01020300

# Config Methods

# List of the supported configuration methods

config_methods=label display push_button keypad

##### default configuration #######################################

interface=wlan0

driver=rtl871xdrv    #注意这里不能是nl80211

beacon_int=100

hw_mode=g

ieee80211n=1

wme_enabled=1

ht_capab=[SHORT-GI-20][SHORT-GI-40][HT40+]

wpa_key_mgmt=WPA-PSK

wpa_pairwise=CCMP

max_num_sta=8

wpa_group_rekey=86400

在终端输入ifconfig wlan0 192.168.3.1给无线网卡分配一个静态IP，

然后输入hostapd -d /etc/hostapd.conf即可启动Hostapd，使用笔记本可以搜到一个mini2440的wifi热点，但是没有配置dhcp服务器，搜到的热点是不能直接连接的需要配置静态ip访问。

下面来讲一下udhcpd的配置，由于内核自带udhcpd功能，这里只要简单配置一下：

编写udhcp.conf文件，内容如下:

# Sample udhcpd configuration file (/etc/udhcpd.conf)

# The start and end of the IP lease block

start 192.168.3.2
#default: 192.168.0.20

end 192.168.3.254
#default: 192.168.0.254

# The interface that udhcpd will use

interface wlan0
#default: eth0

# The maximim number of leases (includes addressesd reserved

# by OFFER's, DECLINE's, and ARP conficts

#max_leases 254
#default: 254

# If remaining is true (default), udhcpd will store the time

# remaining for each lease in the udhcpd leases file. This is

# for embedded systems that cannot keep time between reboots.

# If you set remaining to no, the absolute time that the lease

# expires at will be stored in the dhcpd.leases file.

#remaining yes
#default: yes

# The time period at which udhcpd will write out a dhcpd.leases

# file. If this is 0, udhcpd will never automatically write a

# lease file. (specified in seconds)

#auto_time 7200
#default: 7200 (2 hours)

# The amount of time that an IP will be reserved (leased) for if a 

# DHCP decline message is received (seconds).

#decline_time 3600
#default: 3600 (1 hour)

# The amount of time that an IP will be reserved (leased) for if an

# ARP conflct occurs. (seconds

#conflict_time 3600
#default: 3600 (1 hour)

# How long an offered address is reserved (leased) in seconds

#offer_time 60
#default: 60 (1 minute)

# If a lease to be given is below this value, the full lease time is

# instead used (seconds).

#min_lease 60
#defult: 60

# The location of the leases file

#lease_file /var/lib/misc/udhcpd.leases
#defualt: /var/lib/misc/udhcpd.leases

# The location of the pid file

#pidfile /var/run/udhcpd.pid
#default: /var/run/udhcpd.pid

# Everytime udhcpd writes a leases file, the below script will be called.

# Useful for writing the lease file to flash every few hours.

#notify_file #default: (no script)

#notify_file dumpleases
# <--- usefull for debugging

# The following are bootp specific options, setable by udhcpd.

#siaddr 192.168.0.22
#default: 0.0.0.0

#sname zorak
#default: (none)

#boot_file /var/nfs_root
#default: (none)

# The remainer of options are DHCP options and can be specifed with the

# keyword 'opt' or 'option'. If an option can take multiple items, such

# as the dns option, they can be listed on the same line, or multiple

# lines. The only option with a default is 'lease'.

#Examles

opt dns
8.8.8.8 8.8.4.4

option subnet
255.255.255.0

opt router
192.168.3.1

#opt wins
192.168.10.10

option dns
8.8.8.8 # appened to above DNS servers for a total of 3

option domain
local

option lease
864000 # 10 days of seconds

# Currently supported options, for more info, see options.c

#subnet

#timezone

#router

#timesvr

#namesvr

#dns

#logsvr

#cookiesvr

#lprsvr

#bootsize

#domain

#swapsvr

#rootpath

#ipttl

#mtu

#broadcast

#wins

#lease

#ntpsrv

#tftp

#bootfile

在终端输入udhcpd /etc/udhcpd.conf，设备连接无线AP，将能自动分配IP