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- Release Date: 2008-12-05, ver 1037
- RTL8187L Linux driver version 1037
- --This driver supports RealTek RTL8187L Wireless LAN NIC for
- 2.6 kernel:
- Fedora Core 2/3/4/5/6/7, Debian 3.1, Mandrake 10.2/Mandriva 2006,
- SUSE 9.3/10.1/10.2, Gentoo 3.1, etc, Ubuntu8.04/8.10.
- 2.4 kernel:
- Redhat 9.2, etc
- - Support Client mode for either infrastructure or adhoc mode
- - Support WEP, WPAPSK and WPA2PSK connection
- ======================================================================================
- Component
- ======================================================================================
- The driver is composed of several parts:
- 1. Module source code
- ieee80211
- rtl8187
- 2. Script ot build the modules
- Makefile
- 3. Script to load/unload modules
- wlan0up
- wlan0down
- 4. Script and configuration for DHCP
- wlan0dhcp
- ifcfg-wlan0
- 5. Supplicant source code:
- wpa_supplicant-0.5.5.tar.gz
- 6. Example of supplicant configuration file:
- wpa1.conf
- ======================================================================================
- Installation
- ======================================================================================
- <<Method 1>>
- Runing the scripts can finish all operations of building up modules
- from the source code, installing driver to the kernel and starting up the nic.
- 1. Build up the drivers from the source code
- make
- 2. Install the driver to the kernel
- make install
- reboot
- 3. bring up wlan if nic is not brought up by GUI, such as NetworkManager
- ifconfig wlan0 up
- Note: use ifconfig to check whether wlan0 is brought up and use iwconfig to
- check your wlan interface name,since it may change wlan0 to wlan1,etc.
- <<Method 2>>
- Or only load the driver module to kernel and start up nic.
- 1. Build up the drivers from the source code
- make
- 2. Load driver module to kernel and start up nic.
- ./wlan0up
- Note: when "insmod: error inserting 'xxxx.ko': -1 File exists" comes out
- after run ./wlan0up, please run ./wlan0down first, then it should
- be ok..
- Note: If you see the message of "unkown symbol" during ./wlan0up, it
- is suggested to build driver by <<Method 1>>.
- ======================================================================================
- Set wireless lan MIBs
- ======================================================================================
- This driver uses Wireless Extension as an interface allowing you to set
- Wireless LAN specific parameters.
- Current driver supports "iwlist" to show the device status of nic
- iwlist wlan0 [parameters]
- where
- parameter explaination [parameters]
- ----------------------- -------------
- Show available chan and freq freq / channel
- Show and Scan BSS and IBSS scan[ning]
- Show supported bit-rate rate / bit[rate]
- Show Power Management mode power
- For example:
- iwlist wlan0 channel
- iwlist wlan0 scan
- iwlist wlan0 rate
- iwlist wlan0 power
- Driver also supports "iwconfig", manipulate driver private ioctls, to set
- MIBs.
- iwconfig wlan0 [parameters] [val]
- where
- parameter explaination [parameters] [val] constraints
- ----------------------- ------------- ------------------
- Connect to AP by address ap [mac_addr]
- Set the essid, join (I)BSS essid [essid]
- Set operation mode mode {Managed|Ad-hoc}
- Set keys and security mode key/enc[ryption] {N|open|restricted|off}
- For example:
- iwconfig wlan0 ap XX:XX:XX:XX:XX:XX
- iwconfig wlan0 essid "ap_name"
- iwconfig wlan0 mode Ad-hoc
- iwconfig wlan0 mode essid "name" mode Ad-hoc
- iwconfig wlan0 key 0123456789 [2] open
- iwconfig wlan0 key off
- iwconfig wlan0 key restricted [3] 0123456789
- ======================================================================================
- Getting IP address
- ======================================================================================
- After start up the nic, the network needs to obtain an IP address before
- transmit/receive data.
- This can be done by setting the static IP via "ifconfig wlan0 IP_ADDRESS"
- command, or using DHCP.
- If using DHCP, setting steps is as below:
- (1)connect to an AP via "iwconfig" settings
- iwconfig wlan0 essid [name] or
- iwconfig wlan0 ap XX:XX:XX:XX:XX:XX
- (2)run the script which run the dhclient
- ./wlan0dhcp
- or
- dhcpcd wlan0
- (Some network admins require that you use the
- hostname and domainname provided by the DHCP server.
- In that case, use
- dhcpcd -HD wlan0)
- ======================================================================================
- WPAPSK/WPA2PSK
- ======================================================================================
- Wpa_supplicant helps to secure wireless connection with the protection of
- WPAPSK/WPA2PSK mechanism.
- If the version of Wireless Extension in your system is equal or larger than 18,
- WEXT driver interface is recommended. Otherwise, IPW driver interface is advised.
- Note: Wireless Extension is defined us "#define WIRELESS_EXT" in Kernel
- Note: To check the version of wireless extension, please type "iwconfig -v"
- If IPW driver interface is used, We suggested to follow the steps from 1 to 6.
- If wpa_supplicant has been installed in your system, only steps 5 and 6 are required
- to be executed for WEXT driver interface.
- To see detailed description for driver interface and wpa_supplicant, please type
- "man wpa_supplicant".
- (1)Download latetest source code for wpa supplicant or use wpa_supplicant-0.5.5
- attached in this package. (It is suggested to use default package contained
- in the distribution because there should less compilation issue.)
- Unpack source code of WPA supplicant:
- tar -zxvf wpa_supplicant-0.5.5.tar.gz (e.g.)
- cd wpa_supplicant-0.5.5
- (2)Create .config file:
- cp defconfig .config
- (3)Edit .config file, uncomment the following line if ipw driver interface
- will be applied:
- #CONFIG_DRIVER_IPW=y.
- (4)Build and install WPA supplicant:
- make
- cp wpa_cli wpa_supplicant /usr/local/bin
- If make error for lack of <include/md5.h>, install the openssl lib(two ways):
- 1. Install the openssl lib from corresponding installation disc:
- Fedora Core 2/3/4/5(openssl-0.9.71x-xx),
- Mandrake10.2/Mandriva10.2(openssl-0.9.7x-xmdk),
- Debian 3.1(libssl-dev), Suse 9.3/10.0/10.1(openssl_devl),
- Gentoo(dev-libs/openssl), etc.
- 2. Download the openssl open source package from www.openssl.org, build and
- install it.
- (5)Edit wpa_supplicant.conf to set up SSID and its passphrase.
- For example, the following setting in "wpa1.conf" means SSID
- to join is "BufAG54_Ch6" and its passphrase is "87654321".
- Example 1: Configuration for WPA-PWK
- network={
- ssid="BufAG54_Ch6"
- proto=WPA
- key_mgmt=WPA-PSK
- pairwise=CCMP TKIP
- group=CCMP TKIP WEP104 WEP40
- psk="87654321"
- priority=2
- }
- Example 2: Configuration for LEAP
- network={
- ssid="BufAG54_Ch6"
- key_mgmt=IEEE8021X
- group=WEP40 WEP104
- eap=LEAP
- identity="user1"
- password="1111"
- }
- Note: 1. proto=WPA for WPA, proto=RSN for WPA2.
- 2. If user needs to connect an AP with WPA or WPA2 mixed mode, it is suggested
- to set the cipher of pairwise and group to both CCMP and TKIP unless you
- know exactly which cipher type AP is configured.
- 3. Low kernel version which is lower than 2.6.18.rc2 may have trouble with
- TKIP heavy traffic while SMP is configured. Please change your security
- cipher or update your kernel.
- 4. According to documentaion "wpa_supplicant.conf" provided by the package of
- wpa_supplicant, ap_scan is set to 2 for IBSS connection. If user is trying to
- associate to AP in Infrastructure mode, please unmark this line us as belowing
- "#ap_scan=2"
- (6)Execute WPA supplicant (Assume related modules had been loaded):
- wpa_supplicant -D wext -c wpa1.conf -i wlan0 & (recommended)
- wpa_supplicant -D ipw -c wpa1.conf -i wlan0
- Note: At first, user sholud check Wireless Extension by typing "iwconfig -v"
- on the comment line. If the version of Wireless Extension is equal or
- larger than 18, the option of "-D wext" is suggested. If the version
- of Wireless extension is less than 18, the option of "-D ipw" is
- suggested.
- But before you use "wext" or "ipw" command, you sholud check which drivers
- wpa_supplicant can support by typing command "wpa_supplicant". after typing the
- comment line, you can see some infomations about wpa_supplicant are listed,
- example:
- ---------------------------------------------------------------------------
- usage:
- XXXXXXXXX
- drivers:
- wext = Linux wireless extensions (generic)
- atmel = ATMEL AT76C5XXx (USB, PCMCIA)
- wired = wpa_supplicant wired Ethernet driver
- options:
- XXXXXXXXX
- example:
- XXXXXXXXX
- ---------------------------------------------------------------------------
- The driver interface wpa_supplicant can support are listed in "drivers",
- if "ipw" or "wext" is not listed in it, you can only use the the other interface.
- If the interface you want to use is not supported by wpa_supplicant. you can
- follow steps (1)-(6), And in step (3) you must let:
- CONFIG_DRIVER_IPW=y.
- or
- CONFIG_DRIVER_WEXT=y.
- or both
- CONFIG_DRIVER_IPW=y.
- CONFIG_DRIVER_WEXT=y.
- ======================================================================================
- GPIO methord for Radio On/Off
- ======================================================================================
- 1. The Change For Deliverring Power State:
- Now we add the RadioPower.sh script in the driver root path.
- When you run ./wlan0up or make install, this script will be copied
- to /etc/acpi/events. And the driver can deliver the power
- state "RFON" or "RFOFF" into /etc/acpi/events/RadioPower.sh from driver.
- So you can change this script based on the power state RFON or RFOFF.
- 2. For Example:
- Now the RadioPower.sh's content is:
- if[ "$1" = ""RFON ]; then
- echo "===================>Now Polling Method Turn RF ON!" > /etc/acpi/events/RadioPowerTest
- else
- echo "===================>Now Polling Method Turn RF OFF!" > /etc/acpi/events/RadioPowerTest
- fi
- So when you turn on RF using Polling Method, you can see "===================>>Now Polling Method Turn RF ON!"
- using command: cat /etc/acpi/events/RadioPowerTest.
- And when you turn off RF using Polling Method, you can see "===================>>Now Polling Method Turn RF OFF!"
- using command: cat /etc/acpi/events/RadioPowerTest.
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