NAME

       bwn — Broadcom BCM43xx SoftMAC IEEE 802.11 wireless network driver

SYNOPSIS

       To compile this driver into the kernel, add the following lines to the kernel configuration file:

             device bwn
             device bhnd
             device bhndb
             device bhndb_pci
             device bcma
             device siba
             device gpio
             device wlan
             device wlan_amrr
             device firmware

       To load the driver as a module at boot, add the following lines to 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.  In most cases the bwn_v4_ucode kernel module from
       the port should be used.  However, if an LP (low power) PHY is being  used,  the  bwn_v4_lp_ucode  module
       should be used.

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.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), bcma(4), bhnd(4), bhndb(4), bwi(4), cardbus(4), intro(4), pci(4), siba(4), wlan(4), wlan_amrr(4),
       ifconfig(8), wpa_supplicant(8)

HISTORY

       The bwn driver first appeared in FreeBSD 8.1.  The driver was updated  to  support  the  common  Broadcom
       bhnd(4) bus interface in FreeBSD 12.0.

AUTHORS

       The  bwn  driver  was  written  by Weongyo Jeong <weongyo@FreeBSD.org>.  Support for bhnd(4) was added by
       Landon Fuller <landonf@FreeBSD.org>.

CAVEATS

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

Debian                                          December 16, 2017                                         BWN(4)