1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
|
.\" $OpenBSD: iwi.4,v 1.30 2008/04/17 14:01:22 jmc Exp $
.\"
.\" 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: April 17 2008 $
.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.
.Pp
These are the modes the
.Nm
driver can operate in:
.Bl -tag -width "IBSS-masterXX"
.It 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.
.It 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.
.It 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
.Pp
.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.
.Pp
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 3.0 of the following firmware files,
which are loaded when an interface is brought up:
.Pp
.Bl -tag -width Ds -offset indent -compact
.It Pa /etc/firmware/iwi-bss
.It Pa /etc/firmware/iwi-ibss
.It Pa /etc/firmware/iwi-monitor
.El
.Pp
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.
.Pp
A prepackaged version of the firmware, designed to be used with
.Xr pkg_add 1 ,
can be found at:
.Pp
.Pa http://damien.bergamini.free.fr/packages/openbsd/iwi-firmware-3.0.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:
.Bd -literal -offset indent
dhcp NONE NONE NONE nwkey 0x1deadbeef1 chan 11
.Ed
.Pp
Configure iwi0 for WEP, using hex key
.Dq 0x1deadbeef1 :
.Bd -literal -offset indent
# ifconfig iwi0 nwkey 0x1deadbeef1
.Ed
.Pp
Return iwi0 to its default settings:
.Bd -literal -offset indent
# ifconfig iwi0 -bssid -chan media autoselect \e
nwid "" -nwkey
.Ed
.Pp
Join an existing BSS network,
.Dq my_net :
.Bd -literal -offset indent
# ifconfig iwi0 192.168.1.1 netmask 0xffffff00 nwid my_net
.Ed
.Sh DIAGNOSTICS
.Bl -diag
.It "iwi%d: device timeout"
The driver will reset the hardware.
This should not happen.
.It "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
.Rs
.%T The IPW Web Page
.%O http://damien.bergamini.free.fr/ipw/
.Re
.Sh AUTHORS
The
.Nm
driver was written by
.An Damien Bergamini Aq damien@openbsd.org .
|
