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BWN(4)                 FreeBSD Kernel Interfaces Manual                 BWN(4)

NAME
     bwn - Broadcom BCM43xx IEEE 802.11b/g wireless network driver

SYNOPSIS
     To compile this driver into the kernel, place the following lines in your
     kernel configuration file:

           device siba_bwn
           device bwn
           device wlan
           device wlan_amrr
           device firmware

     Alternatively, to load the driver as a module at boot time, place the
     following line in loader.conf(5):

           if_bwn_load="YES"

DESCRIPTION
     The bwn driver provides support for Broadcom BCM43xx based PCI/CardBus
     network adapters.

     It supports station and monitor mode operation.  Only one virtual
     interface may be configured at any time.  For more information on
     configuring this device, see ifconfig(8).

     This driver requires firmware to be loaded before it will work.  The
     ports/net/bwn-firmware-kmod port needs to be installed before ifconfig(8)
     will work.  Most cases you need to use bwn_v4_ucode module but if you are
     a LP (low power) PHY user please uses bwn_v4_lp_ucode module.

HARDWARE
     The bwn driver supports Broadcom BCM43xx based wireless devices,
     including:

     Card                     Chip       Bus         Standard
     Apple Airport Extreme    BCM4318    PCI         b/g
     ASUS WL-138g             BCM4318    PCI         b/g
     Buffalo WLI-CB-G54S      BCM4318    CardBus     b/g
     Dell Wireless 1390       BCM4311    Mini PCI    b/g
     Dell Wireless 1470       BCM4318    Mini PCI    b/g
     Dell Truemobile 1400     BCM4309    Mini PCI    b/g
     HP Compaq 6715b          BCM4312    PCI         b/g
     HP nx6125                BCM4319    PCI         b/g
     Linksys WPC54G Ver 3     BCM4318    CardBus     b/g
     Linksys WPC54GS Ver 2    BCM4318    CardBus     b/g
     US Robotics 5411         BCM4318    CardBus     b/g

     Users of older Broadcom chipsets (BCM4301, BCM4303 and BCM4306 rev 2)
     must use 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.

EXAMPLES
     Join an existing BSS network (i.e., connect to an access point):

           ifconfig wlan create wlandev bwn0 inet 192.168.0.20 \
               netmask 0xffffff00

     Join a specific BSS network with network name ``my_net'':

           ifconfig wlan create wlandev bwn0 ssid my_net up

     Join a specific BSS network with 64-bit WEP encryption:

           ifconfig wlan create wlandev bwn0 ssid my_net \
                   wepmode on wepkey 0x1234567890 weptxkey 1 up

LOADER TUNABLES
     Tunables can be set at the loader(8) prompt before booting the kernel or
     stored in loader.conf(5).

     hw.bwn.msi_disable
             This tunable disables MSI support on the hardware.  The default
             value is 0.

     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.

SEE ALSO
     arp(4), bwi(4), cardbus(4), intro(4), pci(4), wlan(4), wlan_amrr(4),
     ifconfig(8), wpa_supplicant(8)

HISTORY
     The bwn driver first appeared in FreeBSD 8.1.

AUTHORS
     The bwn driver was written by Weongyo Jeong <weongyo@FreeBSD.org>.

CAVEATS
     Some LP PHY devices have DMA operation problems that in that case try to
     use PIO mode.

FreeBSD 11.0-PRERELEASE        February 15, 2011       FreeBSD 11.0-PRERELEASE

NAME | SYNOPSIS | DESCRIPTION | HARDWARE | EXAMPLES | LOADER TUNABLES | SEE ALSO | HISTORY | AUTHORS | CAVEATS

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