Before using any userspace tools for connecting to a wireless AP, the Linux kernel must be configured to drive the wireless NIC properly. Enable the following options in the kernel configuration as well as specific device drivers for your hardware and recompile the kernel if necessary:
[*] Networking support ---> [NET] [*] Wireless ---> [WIRELESS] <*/M> cfg80211 - wireless configuration API [CFG80211] < /*/M> Generic IEEE 802.11 Networking Stack (mac80211) [MAC80211] Device Drivers ---> [*] Network device support ---> [NETDEVICES] [*] Wireless LAN ---> [WLAN]
Open the “Wireless
LAN” submenu and select the options that support
your hardware. lspci
from pciutils-3.10.0 or lsusb from usbutils-015 can
be used to view your hardware configuration. Note that many (though
not all) options for the wireless NICs depend on CONFIG_MAC80211
. After the correct
drivers are loaded, the interface will appear in /sys/class/net
, or in the output of the
ip link command.
Many wireless NIC drivers require firmware. If you've enabled the
correct driver in the kernel configuration but it fails to load (with
messages like “Direct firmware load for
”, it means that you need to
install the firmware or the wireless NIC won't work. Read About
Firmware for more details.
<filename
> failed
with error -2