Installing Broadcom drivers in Backtrack
In this , we'll perform the installation of the official Broadcom
hybrid Linux wireless driver. Using a Broadcom wireless USB adapter gives us
the greatest possibility of success in terms of getting our wireless USB access
point to work on BackTrack 5. For the rest of the recipes in this book, we will
assume installation of the Broadcom wireless drivers.
An Internet connection is required to complete this recipe.
How to do it...
Let's begin the
process of installing the Broadcom drivers:
1. Open a terminal window and download the
appropriate Broadcom driver from http://www.broadcom.com/support/802.11/linux_sta.php:
2. Extract the downloaded driver by using the
following script:
mkdir broadcom
tar xvfz
hybrid-portsrc_x86_64-v5_100_82_112.tar.gz -C /tmp/broadcom
3. Modify the wl_cfg80211.c file as there's
a bug in version 5.100.82.112 that prevents compiling the code under kernel
version 2.6.39:
vim
/tmp/broadcom/src/wl/sys/wl_cfg80211.c
In the file, the following line at line number 1814 needs to be
replaced:
#if LINUX_VERSION_CODE > KERNEL_VERSION(2,
6, 39)
It needs to be replaced with:
#if LINUX_VERSION_CODE >=
KERNEL_VERSION(2, 6, 39)
Once done, save the changes.
4. Compile the code:
make clean
make
make install
5. Update the dependencies:
depmod -a
6. Find loaded modules by issuing the
following command:
lsmod | grep b43\|ssb\|bcma
7. Remove the modules found by executing the
following command:
rmmod <module>b43
Where <module>
could be: b43 or
ssb or
bcma.
8. Blacklist the modules to prevent them from
loading at system startup:
echo "blacklist
<module>" >> /etc/modprobe.d/blacklist.conf
Where <module>
could be: b43 or
ssb or
bcma or
wl.
9. Finally, add the new module to the Linux
kernel to make it part of the boot process:
modprobe
wl
