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.\" Copyright (c) 2009 Christian Brueffer
.\" 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, 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.
.\"
.\" $FreeBSD$
.\"
.Dd February 6, 2011
.Dt BWI 4
.Os
.Sh NAME
.Nm bwi
.Nd Broadcom BCM43xx IEEE 802.11b/g wireless network driver
.Sh SYNOPSIS
To compile this driver into the kernel,
place the following lines in your
kernel configuration file:
.Bd -ragged -offset indent
.Cd "device bwi"
.Cd "device wlan"
.Cd "device wlan_amrr"
.Cd "device firmware"
.Ed
.Pp
Alternatively, to load the driver as a
module at boot time, place the following line in
.Xr loader.conf 5 :
.Bd -literal -offset indent
if_bwi_load="YES"
.Ed
.Sh DESCRIPTION
The
.Nm
driver provides support for Broadcom BCM43xx based
PCI/CardBus network adapters.
.Pp
It supports
.Cm station
and
.Cm monitor
mode operation.
Only one virtual interface may be configured at any time.
For more information on configuring this device, see
.Xr ifconfig 8 .
.Pp
This driver requires firmware to be loaded before it will work.
The
.Pa ports/net/bwi-firmware-kmod
port needs to be installed before
.Xr ifconfig 8
will work.
.Sh HARDWARE
The
.Nm
driver supports Broadcom BCM43xx based wireless devices, including:
.Pp
.Bl -column -compact "Apple Airport Extreme" "BCM4306" "Mini PCI" "a/b/g" -offset 6n
.It Em "Card Chip Bus Standard"
.It "Apple Airport Extreme BCM4306 PCI b/g"
.It "Apple Airport Extreme BCM4318 PCI b/g"
.It "ASUS WL-138g BCM4318 PCI b/g"
.It "Buffalo WLI-CB-G54S BCM4318 CardBus b/g"
.It "Buffalo WLI-PCI-G54S BCM4306 PCI b/g"
.It "Compaq R4035 onboard BCM4306 PCI b/g"
.It "Dell Wireless 1390 BCM4311 Mini PCI b/g"
.It "Dell Wireless 1470 BCM4318 Mini PCI b/g"
.It "Dell Truemobile 1300 r2 BCM4306 Mini PCI b/g"
.It "Dell Truemobile 1400 BCM4309 Mini PCI b/g"
.It "HP nx6125 BCM4319 PCI b/g"
.It "Linksys WPC54G Ver 3 BCM4318 CardBus b/g"
.It "Linksys WPC54GS Ver 2 BCM4318 CardBus b/g"
.It "TRENDnet TEW-401PCplus BCM4306 CardBus b/g"
.It "US Robotics 5411 BCM4318 CardBus b/g"
.El
.Pp
The
.Nm
driver uses the older v3 version of Broadcom's firmware.
While this older firmware does support most BCM43xx parts, the
.Xr bwn 4
driver works better for the newer chips it supports.
You must use the
.Nm
driver if you are using older Broadcom chipsets (BCM4301, BCM4303 and
BCM4306 rev 2).
The v4 version of the firmware that
.Xr bwn 4
uses does not support these chips.
.Sh EXAMPLES
Join an existing BSS network (i.e., connect to an access point):
.Bd -literal -offset indent
ifconfig wlan create wlandev bwi0 inet 192.168.0.20 \e
netmask 0xffffff00
.Ed
.Pp
Join a specific BSS network with network name
.Dq Li my_net :
.Pp
.Dl "ifconfig wlan create wlandev bwi0 ssid my_net up"
.Pp
Join a specific BSS network with 64-bit WEP encryption:
.Bd -literal -offset indent
ifconfig wlan create wlandev bwi0 ssid my_net \e
wepmode on wepkey 0x1234567890 weptxkey 1 up
.Ed
.Sh SEE ALSO
.Xr arp 4 ,
.Xr cardbus 4 ,
.Xr intro 4 ,
.Xr pci 4 ,
.Xr wlan 4 ,
.Xr wlan_amrr 4 ,
.Xr ifconfig 8 ,
.Xr wpa_supplicant 8
.Sh HISTORY
The
.Nm
driver first appeared in
.Fx 8.0 .
.Sh AUTHORS
.An -nosplit
The
.Nm
driver was written for DragonFly BSD by
.An Sepherosa Ziehau
and subsequently ported to
.Fx .
.Sh BUGS
Some card based on the BCM4306 and BCM4309 chips do not work properly
on channel 1, 2 and 3.
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