Copyright (c) 2004
Damien Bergamini <damien.bergamini@free.fr>. All rights reserved.
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.Dd September 26, 2004 .Os .Dt IWI 4 .Sh NAME .Nm iwi .Nd Intel PRO/Wireless 2200BG/2225BG/2915ABG IEEE 802.11a/b/g wireless network driver .Sh SYNOPSIS .Cd "iwi* at pci?" .Sh DESCRIPTION The .Nm driver provides support for .Tn Intel PRO/Wireless 2200BG/2915ABG MiniPCI and 2225BG PCI network adapters.
p These are the modes the .Nm driver can operate in: l -tag -width "IBSS-masterXX" t BSS mode Also known as .Em infrastructure mode, this is used when associating with an access point, through which all traffic passes. This is the only mode available for this card. .El
p .Nm supports hardware WEP. Wired Equivalent Privacy (WEP) is the de facto encryption standard for wireless networks. It can be typically configured in one of three modes: no encryption; 40-bit encryption; or 104-bit encryption. Unfortunately, due to serious weaknesses in WEP protocol it is strongly recommended that it not be used as the sole mechanism to secure wireless communication. WEP is not enabled by default. .Sh CONFIGURATION The .Nm driver can be configured at runtime with .Xr ifconfig 8 or on boot with .Xr hostname.if 5 using the following parameters: l -tag -width Ds t Cm bssid Ar bssid Set the desired BSSID. t Fl bssid Unset the desired BSSID. The interface will automatically select a BSSID in this mode, which is the default. t Cm chan Ar n Set the channel (radio frequency) to be used by the driver based on the given channel ID .Ar n . t Fl chan Unset the desired channel to be used by the driver. The driver will automatically select a channel in this mode, which is the default. t Cm mode Ar mode The .Nm driver supports the following modes:
p l -tag -width 11b -compact t Cm 11a Force 802.11a operation. t Cm 11b Force 802.11b operation. t Cm 11g Force 802.11g operation. .El t Cm nwid Ar id Set the network ID. The .Ar id can either be any text string up to 32 characters in length, or a series of hexadecimal digits up to 64 digits. An empty .Ar id string allows the interface to connect to any available access points. By default the .Nm driver uses an empty string. t Cm nwkey Ar key Enable WEP encryption using the specified .Ar key . The .Ar key can either be a string, a series of hexadecimal digits (preceded by .Sq 0x ) , or a set of keys of the form .Dq n:k1,k2,k3,k4 , where .Sq n specifies which of the keys will be used for transmitted packets, and the four keys, .Dq k1 through .Dq k4 , are configured as WEP keys. If a set of keys is specified, a comma
q Sq , within the key must be escaped with a backslash. Note that if multiple keys are used, their order must be the same within the network. .Nm is capable of using both 40-bit (5 characters or 10 hexadecimal digits) or 104-bit (13 characters or 26 hexadecimal digits) keys. t Fl nwkey Disable WEP encryption. This is the default mode of operation. .El .Sh FILES The driver needs some firmware files, which are loaded on demand when the device is attached:
p l -tag -width Ds -offset indent -compact t Pa /etc/firmware/iwi-license t Pa /etc/firmware/iwi-boot t Pa /etc/firmware/iwi-bss t Pa /etc/firmware/iwi-ibss t Pa /etc/firmware/iwi-ucode .El
p These firmware files are not free because Intel refuses to grant distribution rights without contractual obligations. As a result, even though .Ox includes the driver, the firmware files cannot be included and users have to find these files on their own. The official person to state your views to about this issue is peter.engelbrecht@intel.com at (858) 391 1857. .Sh EXAMPLES The following .Xr hostname.if 5 example configures iwi0 to join whatever network is available on boot, using WEP key .Dq 0x1deadbeef1 , channel 11, obtaining an IP address using DHCP: d -literal -offset indent dhcp NONE NONE NONE nwkey 0x1deadbeef1 chan 11 .Ed
p Configure iwi0 for WEP, using hex key .Dq 0x1deadbeef1 : d -literal -offset indent # ifconfig iwi0 nwkey 0x1deadbeef1 .Ed
p Return iwi0 to its default settings: d -literal -offset indent # ifconfig iwi0 -bssid -chan nwid "" -nwkey .Ed
p Join an existing BSS network, .Dq my_net : d -literal -offset indent # ifconfig iwi0 192.168.1.1 netmask 0xffffff00 nwid my_net .Ed .Sh DIAGNOSTICS l -diag t "iwi%d: device timeout" The driver will reset the hardware. This should not happen. .El .Sh SEE ALSO .Xr arp 4 , .Xr ifmedia 4 , .Xr intro 4 , .Xr netintro 4 , .Xr pci 4 , .Xr hostname.if 5 , .Xr ifconfig 8 .Rs .%T The IWI Web Page .%O http://damien.bergamini.free.fr/ipw/ .Re .Sh AUTHORS The .Nm driver and this man page were written by .An Damien Bergamini Aq damien.bergamini@free.fr .