Copyright (c) 2004
Damien Bergamini <damien.bergamini@free.fr>. All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
are met:
1. Redistributions of source code must retain the above copyright
notice unmodified, this list of conditions, and the following
disclaimer.
2. Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
SUCH DAMAGE.
.Dd $Mdocdate: October 24 2021 $ .Dt IWI 4 .Os .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 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 (WPA1 and WPA2). WPA2 is the current encryption standard for wireless networks. It is strongly recommended that neither WEP nor WPA1 are used as the sole mechanism to secure wireless communication, due to serious weaknesses. WPA1 is disabled by default and may be enabled using the option .Qq Cm wpaprotos Ar wpa1,wpa2 . For standard WPA networks which use pre-shared keys (PSK), keys are configured using the .Qq Cm wpakey option. WPA-Enterprise networks require use of the wpa_supplicant package. 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 .Mt majid.awad@intel.com .
p A prepackaged version of the firmware can be installed using .Xr fw_update 8 . .Sh EXAMPLES The following example scans for available networks:
p .Dl # ifconfig iwi0 scan
p The following .Xr hostname.if 5 example configures iwi0 to join network .Dq mynwid , using WPA key .Dq mywpakey , obtaining an IP address using DHCP: d -literal -offset indent join mynwid wpakey mywpakey inet autoconf .Ed .Sh DIAGNOSTICS l -diag t "iwi0: device timeout" The driver will reset the hardware. This should not happen. t "iwi0: error N, could not read firmware ..." 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 arp 4 , .Xr ifmedia 4 , .Xr intro 4 , .Xr netintro 4 , .Xr pci 4 , .Xr hostname.if 5 , .Xr ifconfig 8 .Sh HISTORY The .Nm driver first appeared in .Ox 3.7 . .Sh AUTHORS The .Nm driver was written by .An Damien Bergamini Aq Mt damien.bergamini@free.fr . .Sh CAVEATS This driver does not support powersave mode.