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$FreeBSD: releng/11.0/share/man/man4/bwn.4 284291 2015-06-12 00:02:31Z brueffer $
.Dd June 11, 2015 .Dt BWN 4 .Os .Sh NAME .Nm bwn .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: d -ragged -offset indent .Cd "device siba_bwn" .Cd "device bwn" .Cd "device wlan" .Cd "device wlan_amrr" .Cd "device firmware" .Ed
p Alternatively, to load the driver as a module at boot time, place the following line in .Xr loader.conf 5 : d -literal -offset indent if_bwn_load="YES" .Ed .Sh DESCRIPTION The .Nm driver provides support for Broadcom BCM43xx based PCI/CardBus network adapters.
p 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 .
p This driver requires firmware to be loaded before it will work. The
a ports/net/bwn-firmware-kmod port needs to be installed before .Xr ifconfig 8 will work. In most cases the
a bwn_v4_ucode kernel module from the port should be used. However, if an LP (low power) PHY is being used, the
a bwn_v4_lp_ucode module should be used. .Sh HARDWARE The .Nm driver supports Broadcom BCM43xx based wireless devices, including: l -column "Apple Airport Extreme" "BCM4306" "Mini PCI" "a/b/g" t Em "Card" Ta Em "Chip" Ta Em "Bus" Ta Em "Standard" t "Apple Airport Extreme BCM4318 PCI b/g" t "ASUS WL-138g BCM4318 PCI b/g" t "Buffalo WLI-CB-G54S BCM4318 CardBus b/g" t "Dell Wireless 1390 BCM4311 Mini PCI b/g" t "Dell Wireless 1470 BCM4318 Mini PCI b/g" t "Dell Truemobile 1400 BCM4309 Mini PCI b/g" t "HP Compaq 6715b BCM4312 PCI b/g" t "HP nx6125 BCM4319 PCI b/g" t "Linksys WPC54G Ver 3 BCM4318 CardBus b/g" t "Linksys WPC54GS Ver 2 BCM4318 CardBus b/g" t "US Robotics 5411 BCM4318 CardBus b/g" .El
p Users of older Broadcom chipsets (BCM4301, BCM4303 and BCM4306 rev 2) must use .Xr bwi 4 because the v4 version of the firmware does not support these chips. The newer firmware is too big to fit into these old chips. .Sh EXAMPLES Join an existing BSS network (i.e., connect to an access point): d -literal -offset indent ifconfig wlan create wlandev bwn0 inet 192.168.0.20 \e netmask 0xffffff00 .Ed
p Join a specific BSS network with network name .Dq Li my_net :
p .Dl "ifconfig wlan create wlandev bwn0 ssid my_net up"
p
Join a specific BSS network with 64-bit WEP encryption:
d -literal -offset indent ifconfig wlan create wlandev bwn0 ssid my_net \e
wepmode on wepkey 0x1234567890 weptxkey 1 up
.Ed
.Sh LOADER TUNABLES
Tunables can be set at the
.Xr loader 8
prompt before booting the kernel or stored in
.Xr loader.conf 5 .
l -tag -width indent t Va hw.bwn.msi_disable This tunable disables MSI support on the hardware.
The default value is 0.
t Va hw.bwn.usedma This tunable enables DMA operations on the hardware.
If the value is 0, PIO mode would be used.
The default value is 1.
.El
.Sh SEE ALSO
.Xr arp 4 ,
.Xr bwi 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 8.1 .
.Sh AUTHORS
.An -nosplit
The
.Nm
driver was written by
.An Weongyo Jeong Aq Mt weongyo@FreeBSD.org .
.Sh BUGS
Some card based on the BCM4306 and BCM4309 chips do not work properly
on channel 1, 2 and 3.
.Sh CAVEATS
Some LP PHY devices have DMA operation problems that in that case try to
use PIO mode.