194 lines
6.0 KiB
Groff
194 lines
6.0 KiB
Groff
.\"-
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.\" Copyright (c) 2009 Sam Leffler, Errno Consulting
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.\" All rights reserved.
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.\""
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.\" Redistribution and use in source and binary forms, with or without
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.\" modification, are permitted provided that the following conditions
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.\" are met:
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.\" 1. Redistributions of source code must retain the above copyright
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.\" notice, this list of conditions and the following disclaimer,
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.\" without modification.
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.\" 2. Redistributions in binary form must reproduce at minimum a disclaimer
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.\" similar to the "NO WARRANTY" disclaimer below ("Disclaimer") and any
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.\" redistribution must be conditioned upon including a substantially
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.\" similar Disclaimer requirement for further binary redistribution.
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.\"
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.\" NO WARRANTY
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.\" THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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.\" ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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.\" LIMITED TO, THE IMPLIED WARRANTIES OF NONINFRINGEMENT, MERCHANTIBILITY
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.\" AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
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.\" THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY,
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.\" OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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.\" SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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.\" INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
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.\" IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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.\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
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.\" THE POSSIBILITY OF SUCH DAMAGES.
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.\"
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.\" $FreeBSD$
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.\"/
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.Dd July 8, 2009
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.Dt MWL 4
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.Os
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.Sh NAME
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.Nm mwl
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.Nd "Marvell 88W8363 IEEE 802.11n wireless network driver"
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.Sh SYNOPSIS
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To compile this driver into the kernel,
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place the following lines in your
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kernel configuration file:
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.Bd -ragged -offset indent
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.Cd "device mwl"
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.Cd "device mwlfw"
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.Cd "device wlan"
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.Cd "device firmware"
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.Ed
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.Pp
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Alternatively, to load the driver as a
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module at boot time, place the following line in
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.Xr loader.conf 5 :
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.Bd -literal -offset indent
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if_mwl_load="YES"
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.Ed
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.Sh DESCRIPTION
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The
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.Nm
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driver provides support for IEEE 802.11n wireless network adapters based on
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Marvell 88W8363 parts.
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PCI and/or CardBus interfaces are supported.
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.Pp
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This driver requires the firmware built with the
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.Nm mwlfw
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module to work.
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Normally this module is loaded on demand by the driver but it may
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also be compiled into the kernel.
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.Pp
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Supported features include 802.11n, power management, BSS, MBSS,
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and host-based access point operation modes.
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All host/device interaction is via DMA.
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.Pp
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The
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.Nm
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driver encapsulates IP and ARP traffic as 802.11 frames, however
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it can receive either 802.11 or 802.3 frames.
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Devices support 802.11n, 802.11a, 802.11g, and 802.11b operation with
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transmit speeds appropriate to each.
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The actual transmit speed used is dependent on signal quality and the
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.Dq "rate control"
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algorithm implemented in the firmware.
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All chips have hardware support for WEP,
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AES-CCM, TKIP, and Michael cryptographic operations.
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.Pp
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The driver supports
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.Cm station ,
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.Cm hostap ,
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.Cm mesh ,
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and
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.Cm wds
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mode operation.
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Multiple
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.Cm hostap
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virtual interfaces may be configured for simultaneous use.
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When multiple interfaces are configured each may have a separate
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mac address that is formed by setting the U/L bits in the mac
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address assigned to the underlying device.
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Any number of
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.Cm wds
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virtual interfaces may be configured together with
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.Cm hostap
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interfaces.
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Multiple
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.Cm station
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interfaces may be operated together with
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.Cm hostap
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interfaces to construct a wireless repeater device.
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For more information on configuring this device, see
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.Xr ifconfig 8 .
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.Pp
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Devices supported by the
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.Nm
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driver come in either Cardbus or mini-PCI packages.
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Wireless cards in Cardbus slots may be inserted and ejected on the fly.
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.Sh EXAMPLES
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Join an existing BSS network (ie: connect to an access point):
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.Bd -literal -offset indent
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ifconfig wlan create wlandev mwl0 inet 192.168.0.20 \e
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netmask 0xffffff00"
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.Ed
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.Pp
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Join a specific BSS network with network name
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.Dq Li my_net :
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.Bd -literal -offset indent
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ifconfig wlan create wlandev mwl0 inet 192.168.0.20 \e
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netmask 0xffffff00 ssid my_net"
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.Ed
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.Pp
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Join a specific BSS network with WEP encryption:
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.Bd -literal -offset indent
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ifconfig wlan0 create wlandev mwl0
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ifconfig wlan0 inet 192.168.0.20 netmask 0xffffff00 ssid my_net \e
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wepmode on wepkey 0x8736639624
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.Ed
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.Pp
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Create an 802.11g host-based access point:
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.Bd -literal -offset indent
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ifconfig wlan0 create wlandev mwl0 wlanmode hostap
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ifconfig wlan0 inet 192.168.0.10 netmask 0xffffff00 ssid my_ap \e
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mode 11g
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.Ed
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.Pp
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Create an 802.11a mesh station:
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.Bd -literal -offset indent
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ifconfig wlan0 create wlandev mwl0 wlanmode mesh
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ifconfig wlan0 meshid my_mesh mode 11a inet 192.168.0.10/24
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.Ed
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.Pp
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Create two virtual 802.11a host-based access points, one with
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with WEP enabled and one with no security, and bridge them to
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the fxp0 (wired) device:
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.Bd -literal -offset indent
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ifconfig wlan0 create wlandev mwl0 wlanmode hostap \e
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ssid paying-customers wepmode on wepkey 0x1234567890 \e
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mode 11a up
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ifconfig wlan1 create wlandev mwl0 wlanmode hostap bssid \e
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ssid freeloaders up
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ifconfig bridge0 create addm wlan0 addm wlan1 addm fxp0 up
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.Ed
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.Sh DIAGNOSTICS
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.Bl -diag
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.It "mwl%d: unable to setup builtin firmware"
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There was a problem downloading and/or setting up the firmware.
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The device is not usable.
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.It "mwl%d: failed to setup descriptors: %d"
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There was a problem setting up the DMA data structures.
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This typically is caused by not being able to allocate contiguous memory.
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.It "mwl%d: transmit timeout"
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A frame dispatched to the hardware for transmission did not complete in time.
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This should not happen.
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.It "mwl%d: device not present"
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A cardbus device was ejected while active; the request to the firmware
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was not completed.
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.El
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.Sh SEE ALSO
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.Xr cardbus 4 ,
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.Xr intro 4 ,
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.Xr mwlfw 4 ,
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.Xr pci 4 ,
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.Xr wlan 4 ,
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.Xr wlan_ccmp 4 ,
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.Xr wlan_tkip 4 ,
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.Xr wlan_wep 4 ,
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.Xr wlan_xauth 4 ,
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.Xr hostapd 8 ,
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.Xr ifconfig 8 ,
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.Xr wpa_supplicant 8
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.Sh HISTORY
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The
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.Nm
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device driver first appeared in
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.Fx 8.0 .
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.Sh BUGS
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The driver does not support power-save operation in station mode;
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consequently power use is suboptimal (e.g. on a laptop).
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