1.\" $OpenBSD: iwi.4,v 1.41 2011/06/09 14:21:11 deraadt Exp $ 2.\" 3.\" Copyright (c) 2004 4.\" Damien Bergamini <damien.bergamini@free.fr>. All rights reserved. 5.\" 6.\" Redistribution and use in source and binary forms, with or without 7.\" modification, are permitted provided that the following conditions 8.\" are met: 9.\" 1. Redistributions of source code must retain the above copyright 10.\" notice unmodified, this list of conditions, and the following 11.\" disclaimer. 12.\" 2. Redistributions in binary form must reproduce the above copyright 13.\" notice, this list of conditions and the following disclaimer in the 14.\" documentation and/or other materials provided with the distribution. 15.\" 16.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 17.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 20.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26.\" SUCH DAMAGE. 27.\" 28.Dd $Mdocdate: June 9 2011 $ 29.Dt IWI 4 30.Os 31.Sh NAME 32.Nm iwi 33.Nd Intel PRO/Wireless 2200BG/2225BG/2915ABG IEEE 802.11a/b/g wireless network device 34.Sh SYNOPSIS 35.Cd "iwi* at pci?" 36.Sh DESCRIPTION 37The 38.Nm 39driver provides support for 40.Tn Intel 41PRO/Wireless 2200BG/2915ABG Mini PCI and 2225BG PCI network adapters. 42.Pp 43These are the modes the 44.Nm 45driver can operate in: 46.Bl -tag -width "IBSS-masterXX" 47.It BSS mode 48Also known as 49.Em infrastructure 50mode, this is used when associating with an access point, through 51which all traffic passes. 52This mode is the default. 53.It IBSS mode 54Also known as 55.Em IEEE ad-hoc 56mode or 57.Em peer-to-peer 58mode. 59This is the standardized method of operating without an access point. 60Stations associate with a service set. 61However, actual connections between stations are peer-to-peer. 62.It monitor mode 63In this mode the driver is able to receive packets without 64associating with an access point. 65This disables the internal receive filter and enables the card to 66capture packets from networks which it wouldn't normally have access to, 67or to scan for access points. 68.El 69.Pp 70The 71.Nm 72driver can be configured to use 73Wired Equivalent Privacy (WEP) or 74Wi-Fi Protected Access (WPA-PSK and WPA2-PSK). 75WPA is the de facto encryption standard for wireless networks. 76It is strongly recommended that WEP 77not be used as the sole mechanism 78to secure wireless communication, 79due to serious weaknesses in it. 80The 81.Nm 82driver relies on the software 802.11 stack for both encryption and decryption 83of data frames. 84.Pp 85The 86.Nm 87driver can be configured at runtime with 88.Xr ifconfig 8 89or on boot with 90.Xr hostname.if 5 . 91.Sh FILES 92The driver needs at least version 3.1 of the following firmware files, 93which are loaded when an interface is brought up: 94.Pp 95.Bl -tag -width Ds -offset indent -compact 96.It Pa /etc/firmware/iwi-bss 97.It Pa /etc/firmware/iwi-ibss 98.It Pa /etc/firmware/iwi-monitor 99.El 100.Pp 101These firmware files are not free because Intel refuses to grant 102distribution rights without contractual obligations. 103As a result, even though 104.Ox 105includes the driver, the firmware files cannot be included and 106users have to download these files on their own. 107The official person to state your views to about this issue is 108majid.awad@intel.com. 109.Pp 110A prepackaged version of the firmware, designed to be used with 111.Xr pkg_add 1 , 112can be found at: 113.Bd -literal -offset 3n 114http://firmware.openbsd.org/firmware/iwi-firmware-3.1.tgz 115.Ed 116.Sh EXAMPLES 117The following 118.Xr hostname.if 5 119example configures iwi0 to join whatever network is available on boot, 120using WEP key 121.Dq 0x1deadbeef1 , 122channel 11, obtaining an IP address using DHCP: 123.Bd -literal -offset indent 124dhcp NONE NONE NONE nwkey 0x1deadbeef1 chan 11 125.Ed 126.Pp 127Configure iwi0 to join network 128.Dq my_net 129using WPA with passphrase 130.Dq my_passphrase : 131.Bd -literal -offset indent 132# ifconfig iwi0 nwid my_net wpakey my_passphrase 133.Ed 134.Pp 135Join an existing BSS network, 136.Dq my_net : 137.Bd -literal -offset indent 138# ifconfig iwi0 192.168.1.1 netmask 0xffffff00 nwid my_net 139.Ed 140.Sh DIAGNOSTICS 141.Bl -diag 142.It "iwi%d: device timeout" 143The driver will reset the hardware. 144This should not happen. 145.It "iwi%d: error %d, could not read firmware %s" 146For some reason, the driver was unable to read the firmware image from the 147filesystem. 148The file might be missing or corrupted. 149.El 150.Sh SEE ALSO 151.Xr pkg_add 1 , 152.Xr arp 4 , 153.Xr ifmedia 4 , 154.Xr intro 4 , 155.Xr netintro 4 , 156.Xr pci 4 , 157.Xr hostname.if 5 , 158.Xr ifconfig 8 159.Sh AUTHORS 160The 161.Nm 162driver was written by 163.An Damien Bergamini Aq damien@openbsd.org . 164