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BWFM(4) FreeBSD Kernel Interfaces Manual BWFM(4) NAME bwfm -- Broadcom and Cypress IEEE 802.11a/ac/b/g/n wireless network de- vice SYNOPSIS bwfm* at pci? bwfm* at sdmmc? bwfm* at usb? DESCRIPTION The bwfm driver provides support for Broadcom and Cypress FullMAC wire- less network adapters. The following table summarizes supported chipsets and their capabilities, as well as the bus attachments recognized by the bwfm driver: Chipset Spectrum MIMO Bus BCM43143 2GHz 1x1 SDMMC/USB BCM43236 2GHz/5GHz 2x2 USB BCM4324 2GHz/5GHz 2x2 SDMMC BCM43242 2GHz/5GHz 2x2 USB BCM4329 2GHz/5GHz 2x2 SDMMC BCM4330 2GHz/5GHz 2x2 SDMMC BCM4334 2GHz/5GHz 2x2 SDMMC BCM43340 2GHz/5GHz 1x1 SDMMC BCM43341 2GHz/5GHz 1x1 SDMMC BCM4335 2GHz/5GHz 1x1 SDMMC BCM43362 2GHz 1x1 SDMMC BCM43364 2GHz 1x1 SDMMC BCM4339 2GHz/5GHz 1x1 SDMMC BCM43430 2GHz 1x1 SDMMC BCM43455 2GHz/5GHz 1x1 SDMMC BCM43456 2GHz/5GHz 2x2 SDMMC BCM4350 2GHz/5GHz 2x2 PCI BCM4354 2GHz/5GHz 2x2 SDMMC BCM4356 2GHz/5GHz 2x2 PCI/SDMMC BCM43569 2GHz/5GHz 2x2 USB BCM43602 2GHz/5GHz 3x3 PCI BCM4371 2GHz/5GHz 2x2 PCI These are the modes the bwfm driver can operate in: BSS mode Also known as infrastructure mode, this is used when asso- ciating with an access point, through which all traffic passes. This mode is the default. Host AP In this mode the driver acts as an access point (base sta- tion) for other cards. The bwfm driver can be configured to use Wired Equivalent Privacy (WEP) or Wi-Fi Protected Access (WPA1 and WPA2). WPA2 is the current encryp- tion standard for wireless networks. It is strongly recommended that neither WEP nor WPA1 are used as the sole mechanism to secure wireless communication, due to serious weaknesses. WPA1 is disabled by default and may be enabled using the option "wpaprotos wpa1,wpa2". For standard WPA networks which use pre-shared keys (PSK), keys are configured using the "wpakey" option. WPA-Enterprise networks require use of the wpa_sup- plicant package. The bwfm driver relies on the software 802.11 stack for the WPA handshake. Both encryption and decryption of data frames are handled by the firmware. The firmware automatically selects the transmit speed and the channel de- pending on the received signal strength. The bwfm driver can be configured at runtime with ifconfig(8) or on boot with hostname.if(5). FILES The driver needs a firmware file which is loaded when the driver at- taches. A prepackaged version of the firmware can be installed using fw_update(1). EXAMPLES The following example scans for available networks: # ifconfig bwfm0 scan The following hostname.if(5) example configures bwfm0 to join network "mynwid", using WPA key "mywpakey", obtaining an IP address using DHCP: nwid mynwid wpakey mywpakey dhcp The following hostname.if(5) example creates a host-based access point on boot: mediaopt hostap nwid mynwid wpakey mywpakey inet 192.168.1.1 255.255.255.0 SEE ALSO arp(4), ifmedia(4), intro(4), netintro(4), pci(4), usb(4), hostname.if(5), ifconfig(8) HISTORY The bwfm driver first appeared in OpenBSD 6.3. AUTHORS The bwfm driver was written by Patrick Wildt <patrick@blueri.se>. CAVEATS The firmware is outdated and contains known vulnerabilities. This driver does not support powersave mode. FreeBSD 13.0 June 18, 2020 FreeBSD 13.0
NAME | SYNOPSIS | DESCRIPTION | FILES | EXAMPLES | SEE ALSO | HISTORY | AUTHORS | CAVEATS
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