No Wifi to Master-mode

Linux recognizes my wifi card as AR242x and there's no out-of-the-box support till now.

$ lspci | grep 'Wireless'
02:00.0 Ethernet controller: Atheros Communications Inc. AR242x 802.11abg Wireless PCI Express Adapter (rev 01)

However compiling the latest snapshot from madwifi.org works. (Instructions here)

$ wget -c http://snapshots.madwifi-project.org/madwifi-hal-0.10.5.6-current.tar.gz
$ tar xvf madwifi*.tar.gz
$ cd madwifi*r*

$ sudo make install
$ sudo modprobe ath_pci
$ sudo modprobe wlan_scan_sta

Cool. But the problem is no other modes except managed-mode seem to work.

$ sudo iwconfig ath1 mode ad-hoc
Error for wireless request "Set Mode" (8B06) :
SET failed on device ath1 ; Operation not permitted.

I was little curious about this as every wireless card supports at least ad-hoc mode if not managed. So I did a lil' diggin into madwifi's source code and found out that it supports all modes including master (or ap) mode too. This was quite startling to me coz i've been told that Master (or AP) mode is only for dedicated Wireless APs or expensive wireless cards.

Madwifi comes with nice wlanconfig tool.

$ wlanconfig
usage: wlanconfig athX create [nounit] wlandev wifiY
       wlanmode [sta|adhoc|ap|monitor|wds|ahdemo] [uniquebssid]
usage: wlanconfig athX destroy
usage: wlanconfig athX list [active|ap|caps|chan|freq|keys|scan|sta|wme]

Now to start AP mode,

$ sudo wlanconfig ath1 destroy
$ sudo wlanconfig ath1 create wlandev wifi0 wlanmode ap

Now set the ESSID for the wireless network and IP for the interface

$ sudo ifconfig ath1 192.168.0.1
$ sudo iwconfig ath1 essid 'TestAP'

Voila! It worked and I can connect to this AP from another computer, set the IP to 192.168.0.x range and ping too. Now I'm wondering if AP mode is available in every card but is restricted by software so that ppl are forced to buy expensive APs.