Copyright (c) 2004
Damien Bergamini <damien.bergamini@free.fr>. All rights reserved.
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.Dd $Mdocdate: March 24 2009 $ .Os .Dt IWI 4 .Sh NAME .Nm iwi .Nd Intel PRO/Wireless 2200BG/2225BG/2915ABG IEEE 802.11a/b/g wireless network device .Sh SYNOPSIS .Cd "iwi* at pci?" .Sh DESCRIPTION The .Nm driver provides support for .Tn Intel PRO/Wireless 2200BG/2915ABG Mini PCI 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 mode is the default. t IBSS mode Also known as .Em IEEE ad-hoc mode or .Em peer-to-peer mode. This is the standardized method of operating without an access point. Stations associate with a service set. However, actual connections between stations are peer-to-peer. t monitor mode In this mode the driver is able to receive packets without associating with an access point. This disables the internal receive filter and enables the card to capture packets from networks which it wouldn't normally have access to, or to scan for access points. .El
p The .Nm 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 communication, due to serious weaknesses in it. The .Nm driver relies on the software 802.11 stack for both encryption and decryption of data frames.
p The .Nm driver can be configured at runtime with .Xr ifconfig 8 or on boot with .Xr hostname.if 5 . .Sh FILES The driver needs at least version 3.1 of the following firmware files, which are loaded when an interface is brought up:
p l -tag -width Ds -offset indent -compact t Pa /etc/firmware/iwi-bss t Pa /etc/firmware/iwi-ibss t Pa /etc/firmware/iwi-monitor .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 download these files on their own. The official person to state your views to about this issue is majid.awad@intel.com.
p A prepackaged version of the firmware, designed to be used with .Xr pkg_add 1 , can be found at:
p
a http://damien.bergamini.free.fr/packages/openbsd/iwi-firmware-3.1.tgz .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 to join network .Dq my_net using WPA-PSK with passphrase .Dq my_passphrase : d -literal -offset indent # ifconfig iwi0 nwid my_net wpa wpapsk \e `wpa-psk my_net my_passphrase` .Ed
p Return iwi0 to its default settings: d -literal -offset indent # ifconfig iwi0 -bssid -chan media autoselect \e nwid "" -nwkey -wpa -wpapsk .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. t "iwi%d: error %d, could not read firmware %s" For some reason, the driver was unable to read the firmware image from the filesystem. The file might be missing or corrupted. .El .Sh SEE ALSO .Xr pkg_add 1 , .Xr arp 4 , .Xr ifmedia 4 , .Xr intro 4 , .Xr netintro 4 , .Xr pci 4 , .Xr hostname.if 5 , .Xr ifconfig 8 .Sh AUTHORS The .Nm driver was written by .An Damien Bergamini Aq damien@openbsd.org .