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WPI(4)		       FreeBSD Kernel Interfaces Manual			WPI(4)

NAME
     wpi -- Intel 3945ABG Wireless LAN IEEE 802.11 driver

SYNOPSIS
     To	compile	this driver into the kernel, place the following lines in your
     kernel configuration file:

	   device wpi
	   device wpifw
	   device pci
	   device wlan
	   device wlan_amrr
	   device firmware

     Alternatively, to load the	driver as a module at boot time, place the
     following line in loader.conf(5):

	   if_wpi_load="YES"

DESCRIPTION
     The wpi driver provides support for the Intel 3945ABG Wireless network
     adapter.  The driver supports station, adhoc, adhoc-demo, hostap, and
     monitor mode operation.  Only one virtual interface may be	configured at
     any time.

     The wpi driver can	be configured to use Wired Equivalent Privacy (WEP) or
     Wi-Fi Protected Access (WPA-PSK and WPA2-PSK).  WPA is the	de facto
     encryption	standard for wireless networks.	 It is strongly	recommended
     that WEP not be used as the sole mechanism	to secure wireless communica-
     tion, due to serious weaknesses in	it.  The wpi driver offloads both
     encryption	and decryption of data frames to the hardware for the CCMP
     cipher.

     This driver requires the firmware built with the wpifw module to work.

     The wpi driver can	be configured at runtime with ifconfig(8).

FILES
     /usr/share/doc/legal/intel_wpi.LICENSE  wpi firmware license

EXAMPLES
     Join an existing BSS network (i.e., connect to an access point):

	   ifconfig wlan0 create wlandev wpi0 inet 192.168.0.20	\
	       netmask 0xffffff00

     Join a specific BSS network with network name ``my_net'':

	   ifconfig wlan0 create wlandev wpi0 ssid my_net up

     Join a specific BSS network with 64-bit WEP encryption:

	   ifconfig wlan0 create wlandev wpi0 ssid my_net \
		   wepmode on wepkey 0x1234567890 weptxkey 1 up

     Create an IBSS network with 128-bit WEP encryption	on the channel 4:

	   ifconfig wlan0 create wlandev wpi0 wlanmode adhoc ssid my_net \
		   wepmode on wepkey 0x01020304050607080910111213 weptxkey 1 \
		   channel 4

     Join/create an 802.11b IBSS network with network name ``my_net'':

	   ifconfig wlan0 create wlandev wpi0 wlanmode adhoc
	   ifconfig wlan0 inet 192.168.0.22 netmask 0xffffff00 ssid my_net \
		   mode	11b

     Create an 802.11g host-based access point:

	   ifconfig wlan0 create wlandev wpi0 wlanmode hostap
	   ifconfig wlan0 inet 192.168.0.10 netmask 0xffffff00 ssid my_ap \
		   mode	11g

DIAGNOSTICS
     wpi%d: could not load firmware image '%s'	The driver failed to load the
     firmware image using the firmware(9) subsystem.  Verify the wpifw
     firmware module is	installed.

     wpi%d: %s:	timeout	waiting	for adapter to initialize, error %d  The
     onboard microcontroller failed to initialize in time.  This should	not
     happen.

     wpi%d: %s:	could not load boot firmware  An attempt to upload the boot
     firmware image to the onboard microcontroller failed.  This should	not
     happen.

     wpi%d: device timeout  A frame dispatched to the hardware for transmis-
     sion did not complete in time.  The driver	will reset the hardware	and
     continue.	This should not	happen.

     wpi%d: scan timeout  Firmware scan	command	response was not received in
     time.  The	driver will reset the hardware and continue.  This should not
     happen.

     wpi%d: fatal firmware error  The onboard microcontroller crashed for some
     reason.  The driver will reset the	hardware and continue.	This should
     not happen.

     wpi%d: RF switch: radio disabled  The hardware switch controlling the
     radio is currently	turned off.  Data transmission is not possible in this
     state.

     wpi%d: can't map mem space	 The driver was	unable to map the device reg-
     isters into the host address space.  This should not happen.

     wpi%d: can't map interrupt	 The driver was	unable to allocate an IRQ for
     the device	interrupt.  This should	not happen.

     wpi%d: can't establish interrupt, error %d	 The driver was	unable to
     install the device	interrupt handler.  This should	not happen.

     wpi%d: %s:	bus_dmamap_load	failed,	error %d  The driver was unable	to map
     newly allocated mbuf to device visible address space.  Contents of	cur-
     rently received frame will	be lost.  This should not happen.

SEE ALSO
     pci(4), wlan(4), wlan_amrr(4), wlan_ccmp(4), wlan_tkip(4),	wlan_wep(4),
     wlan_xauth(4), wpifw(4), hostapd(8), ifconfig(8), wpa_supplicant(8)

AUTHORS
     The original wpi driver was written for OpenBSD by	Damien Bergamini
     <damien.bergamini@free.fr>.  Benjamin Close <benjsc@FreeBSD.org> ported
     wpi to FreeBSD.

CAVEATS
     Hostap mode is not	directly supported by the device; it is	implemented
     through IBSS mode (as a result, DFS/passive channels are not available in
     this mode).

     Powersave may be unstable on some networks	(results in occasional 'wpi%d:
     device timeout' messages);	you can	try to disable it to improve device
     stability.

FreeBSD	11.0		       January 31, 2016			  FreeBSD 11.0

NAME | SYNOPSIS | DESCRIPTION | FILES | EXAMPLES | DIAGNOSTICS | SEE ALSO | AUTHORS | CAVEATS

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