La Vita è Bella

Saturday, November 08, 2008

Got 802.11n working on Asus Eee Box!

In my last blog, I use ndiswrapper for wireless driver and it can only use 802.11g, but not 802.11n. But today I've got the solution!

According to this article on EeeUser forum, the rt2860 chipset released the source code for Linux driver! Download them from the official website, and build it. You will need kernel header package to build the driver.

After successfully build, use "modprobe rt2860sta" to install this module, and you may also add the line "rt2860sta" to your "/etc/mmodules" file to load it automatically every time (but seems that modprobe have done this, you may don't need this step).

Now here's a problem: seems that wpa_supplicant didn't support this driver. So you need to set wireless parameters by iwpriv manually. And the biggest problem is WPAPSK, you can't just input your passphrase to do it. Luckily there's a webpage that can calculate the WPAPSK for us. I'm using WPA2 and it works. I'm not sure about WPA. But WPA is broken! Why don't you move to WPA2? ;)

Save the below script to "/etc/restart_wireless.sh" and give it execute privilege:

iface=ra0
w="iwpriv $iface"

total_start=$(date +%s)

init_start=$(date +%s)
echo -en "iwpriv config..."
$w set NetworkType=Infra
$w set AuthMode=WPA2PSK
$w set EncrypType=AES
$w set SSID=Your SSID
# get WPAPSK from http://www.wireshark.org/tools/wpa-psk.html
$w set WPAPSK=Your WPAPSK
echo "done"
init_end=$(date +%s)
init_time=$(($init_end-$init_start))

assoc_start=$(date +%s)
assoc=0
assoc_report=10
assoc_loop=310
echo -n "Associating..."
for ((i=0; $i < $assoc_loop; i++)); do
        if [ "$(iwconfig ra0 2>/dev/null | head -1 | cut -f2 -d: | cut -f1 -d" ")" == "\"\"" ]; then
                if [[ $(( ($i+1) % $assoc_report )) == 0 ]]; then
                        echo -n .
                fi
        else
                echo done
                assoc=1
                break
        fi
        sleep 1
done

if [[ $assoc != 1 ]]; then
        echo failed
        exit 1
fi
assoc_end=$(date +%s)
assoc_time=$(($assoc_end-$assoc_start))

total_end=$(date +%s)
total_time=$(($total_end-$total_start))

echo -e "Time spent (sesconds)\n\tinit: $init_time\n\tassociation: $assoc_time\n\tTotal: $total_time"

Credit to a1l0a2k9, the above script is also from EeeUser forum, but I removed the DHCP part and modprobe part. If you are using DHCP, then you may need the DHCP part and modprobe part from the original script.

Now the "/etc/network/interfaces" part, add the following lines for the ra0 interface:

iface ra0 inet static
up /etc/restart_wireless.sh
address 10.0.14.14
netmask 255.255.255.0
gateway 10.0.14.1
auto ra0

(for DHCP users: change "static" to "manual" and remove the "address", "netmask" and "gateway" lines.)

And now, "ifup ra0", then you're done!



tags: , , , , , , , ,

11:01:14 by fishy - linux - Permanent Link

Revision: 1.2/1.2, last modified on 2008-11- 7 @ 12:06.

Karma: 43 (74.71% out of 87 were positive) [+/-]

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