RAL(4)                  NetBSD Kernel Interfaces Manual                 RAL(4)

NAME
     ral -- Ralink Technology IEEE 802.11a/b/g wireless network driver

SYNOPSIS
     ral* at cardbus?
     ral* at pci?
     ral* at uhub? port ?

DESCRIPTION
     The ral driver supports PCI/CardBus wireless adapters based on the Ralink
     RT2500, RT2501, and RT2600 chipsets.  The ral driver supports USB 2.0
     wireless adapters based on the Ralink RT2500USB chipset.

     The RT2500 chipset is the first generation of 802.11b/g adapters from
     Ralink.  It consists of two integrated chips, an RT2560 or RT2570(USB)
     MAC/BBP and an RT2525 or RT2526(USB) radio transceiver.

     The RT2501 chipset is the second generation of 802.11b/g adapters from
     Ralink.  It consists of two integrated chips, an RT2561 MAC/BBP and an
     RT2527 radio transceiver.  This chipset provides support for the IEEE
     802.11e standard with multiple hardware transmission queues and allows
     scatter/gather for efficient DMA operations.

     The RT2600 chipset consists of two integrated chips, an RT2661 MAC/BBP
     and an RT2529 radio transceiver.  This chipset uses the MIMO (multiple-
     input multiple-output) technology with multiple antennas to extend the
     operating range of the adapter and to achieve higher throughput.  MIMO
     will be the basis of the future IEEE 802.11n standard.

     These are the modes the ral 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.

     IBSS mode      Also known as IEEE ad-hoc mode or peer-to-peer mode.  This
                    is the standardized method of operating without an access
                    point.  Stations associate with a service set.  However,
                    actual connections between stations are peer-to-peer.

     Host AP        In this mode the driver acts as an access point (base sta-
                    tion) for other cards.

     monitor mode   In this mode the driver is able to receive packets without
                    associating with an access point.  This disables the
                    internal receive filter and enables the card to capture
                    packets from networks which it wouldn't normally have
                    access to, or to scan for access points.

     ral supports software WEP.  Wired Equivalent Privacy (WEP) is the de
     facto encryption standard for wireless networks.  It can be typically
     configured in one of three modes: no encryption; 40-bit encryption; or
     104-bit encryption.  Unfortunately, due to serious weaknesses in WEP pro-
     tocol it is strongly recommended that it not be used as the sole mecha-
     nism to secure wireless communication.  WEP is not enabled by default.

     The transmit speed is user-selectable or can be adapted automatically by
     the driver depending on the received signal strength and on the number of
     hardware transmission retries.  See rssadapt(9) for more information.

CONFIGURATION
     The ral driver can be configured at runtime with ifconfig(8) or on boot
     with ifconfig.if(5) using the following parameters:

     bssid bssid
             Set the desired BSSID.

     -bssid  Unset the desired BSSID.  The interface will automatically select
             a BSSID in this mode, which is the default.

     chan n  Set the channel (radio frequency) to be used by the driver based
             on the given channel ID n.

     -chan   Unset the desired channel to be used by the driver.  The driver
             will automatically select a channel in this mode, which is the
             default.

     media media
             The ral driver supports the following media types:

             autoselect  Enable autoselection of the media type and options.
             DS1         Set 802.11b DS 1Mbps operation.
             DS2         Set 802.11b DS 2Mbps operation.
             DS5         Set 802.11b DS 5.5Mbps operation.
             DS11        Set 802.11b DS 11Mbps operation.
             OFDM6       Set 802.11a/g OFDM 6Mbps operation.
             OFDM9       Set 802.11a/g OFDM 9Mbps operation.
             OFDM12      Set 802.11a/g OFDM 12Mbps operation.
             OFDM18      Set 802.11a/g OFDM 18Mbps operation.
             OFDM24      Set 802.11a/g OFDM 24Mbps operation.
             OFDM36      Set 802.11a/g OFDM 36Mbps operation.
             OFDM48      Set 802.11a/g OFDM 48Mbps operation.
             OFDM54      Set 802.11a/g OFDM 54Mbps operation.

     mediaopt opts
             The ral driver supports the following media options:

             hostap   Select Host AP operation.
             ibss     Select IBSS operation.
             monitor  Select monitor mode.

     -mediaopt opts
             Disable the specified media options on the driver and return it
             to the default mode of operation (BSS).

     mode mode
             The ral driver supports the following modes:

             11a  Force 802.11a operation.
             11b  Force 802.11b operation.
             11g  Force 802.11g operation.

     nwid id
             Set the network ID.  The id can either be any text string up to
             32 characters in length, or a series of hexadecimal digits up to
             64 digits.  An empty id string allows the interface to connect to
             any available access points.  By default the ral driver uses an
             empty string.  Note that network ID is synonymous with Extended
             Service Set ID (ESSID).

     nwkey key
             Enable WEP encryption using the specified key.  The key can
             either be a string, a series of hexadecimal digits (preceded by
             `0x'), or a set of keys of the form ``n:k1,k2,k3,k4'', where `n'
             specifies which of the keys will be used for transmitted packets,
             and the four keys, ``k1'' through ``k4'', are configured as WEP
             keys.  If a set of keys is specified, a comma (`,') within the
             key must be escaped with a backslash.  Note that if multiple keys
             are used, their order must be the same within the network.  ral
             is capable of using both 40-bit (5 characters or 10 hexadecimal
             digits) or 104-bit (13 characters or 26 hexadecimal digits) keys.

     -nwkey  Disable WEP encryption.  This is the default mode of operation.

FILES
     The following firmware files are potentially loaded when an interface is
     brought up:

           /libdata/firmware/ral/ral-rt2561
           /libdata/firmware/ral/ral-rt2561s
           /libdata/firmware/ral/ral-rt2661

     RT2500 adapters do not require a firmware to operate.

HARDWARE
     The following PCI adapters should work:

     A-Link WL54H.   Amigo  AWI-926W.   AMIT  WL531P.   AOpen  AOI-831.   ASUS
     WL-130g.   ASUS  WIFI-G-AAY.   Atlantis Land A02-PCI-W54.  Belkin F5D7000
     v3.  Canyon CN-WF511.  CNet CWP-854.  Compex WLP54G.  Conceptronic C54Ri.
     Corega  CG-WLPCI54GL.   Digitus  DN-7006G-RA.  Dynalink WLG25PCI.  E-Tech
     WGPI02.  Edimax EW-7128g.  Eminent EM3037.  Encore  ENLWI-G-RLAM.   Eusso
     UGL2454-VPR.   Fiberline  WL-400P.   Foxconn WLL-3350.  Gigabyte GN-WPKG.
     Hawking HWP54GR.  Hercules  HWGPCI-54.   iNexQ  CR054g-009  (R03).   JAHT
     WN-4054PCI.   KCORP  LifeStyle  KLS-660.   LevelOne WNC-0301 v2.  Linksys
     WMP54G v4.  Micronet SP906GK.   Minitar  MN54GPC-R.   MSI  MS-6834.   MSI
     PC54G2.   OvisLink  EVO-W54PCI.  PheeNet HWL-PCIG/RA.  Pro-Nets PC80211G.
     Repotec RP-WP0854.  SATech SN-54P.  Signamax 065-1798.   Sitecom  WL-115.
     SparkLAN   WL-660R.    Surecom   EP-9321-g.    Sweex  LC700030.   TekComm
     NE-9321-g.  Tonze PC-6200C.  Unex CR054g-R02.  Zinwell  ZWX-G361.   Zonet
     ZEW1600.

     The following CardBus adapters should work:

     A-Link  WL54PC.   Alfa  AWPC036.   Amigo  AWI-914W.   AMIT  WL531C.  ASUS
     WL-107G.  Atlantis Land A02-PCM-W54.   Belkin  F5D7010  v2.   Canyon  CN-
     WF513.   CC&C  WL-2102.   CNet  CWC-854.  Conceptronic C54RC.  Corega CG-
     WLCB54GL.  Digitus DN-7001G-RA.  Dynalink WLG25CARDBUS.   E-Tech  WGPC02.
     E-Tech WGPC03.  Edimax EW-7108PCg.  Eminent EM3036.  Encore ENPWI-G-RLAM.
     Eusso  UGL2454-01R.   Fiberline  WL-400X.   Gigabyte  GN-WMKG.    Hawking
     HWC54GR.   Hercules  HWGPCMCIA-54.   JAHT  WN-4054P(E).   KCORP LifeStyle
     KLS-611.  LevelOne WPC-0301 v2.  Micronet SP908GK V3.  Minitar MN54GCB-R.
     MSI CB54G2.  MSI MS-6835.  Pro-Nets CB80211G.  Repotec RP-WB7108.  SATech
     SN-54C.  Sitecom WL-112.  SparkLAN WL-611R.   Surecom  EP-9428-g.   Sweex
     LC500050.  TekComm NE-9428-g.  Tonze PW-6200C.  Unex MR054g-R02.  Zinwell
     ZWX-G160.  Zonet ZEW1500.

     The following Mini PCI adapters should work:

     Amigo AWI-922W.  Billionton MIWLGRL.  Gigabyte GN-WIKG.  MSI MP54G2.  MSI
     MS-6833.  Tonze PC-620C.  Zinwell ZWX-G360.

     The following USB 2.0 adapters should work:

     AMIT  WL532U.  ASUS WL-167g.  Belkin F5D7050 v2000.  Buffalo WLI-U2-KG54.
     Buffalo WLI-U2-KG54-AI.  Buffalo WLI-U2-KG54-YB.  CNet  CWD-854.   Compex
     WLU54G  2A1100.   Conceptronic  C54RU.   D-Link  DWL-G122 (b1).  Dynalink
     WLG25USB.  E-Tech WGUS02.  Gigabyte GN-WBKG.  Hercules HWGUSB2-54.  KCORP
     LifeStyle  KLS-685.   Linksys  HU200-TS.   Linksys  WUSB54G  v4.  Linksys
     WUSB54GP v4.  MSI MS-6861.  MSI MS-6865.  MSI  MS-6869.   Nintendo  Wi-Fi
     USB  Connector.  OvisLink Evo-W54USB.  SerComm UB801R.  SparkLAN WL-685R.
     Surecom EP-9001-g.  Sweex LC100060.  Tonze UW-6200C.   Zinwell  ZWX-G261.
     Zonet ZEW2500P.

EXAMPLES
     The following ifconfig.if(5) example creates a host-based access point on
     boot:

           inet 192.168.1.1 netmask 255.255.255.0 media autoselect \
                   mediaopt hostap nwid my_net chan 11

     Configure ral0 for WEP, using hex key ``0x1deadbeef1'':

           # ifconfig ral0 nwkey 0x1deadbeef1

     Return ral0 to its default settings:

           # ifconfig ral0 -bssid -chan media autoselect \
                   nwid "" -nwkey

     Join an existing BSS network, ``my_net'':

           # ifconfig ral0 192.168.1.1 netmask 0xffffff00 nwid my_net

DIAGNOSTICS
     ral%d: could not read microcode %s  For some reason, the driver was
     unable to read the microcode file from the filesystem.  The file might be
     missing or corrupted.

     ral%d: could not load 8051 microcode  An error occurred while attempting
     to upload the microcode to the onboard 8051 microcontroller unit.

     ral%d: timeout waiting for MCU to initialize  The onboard 8051 microcon-
     troller unit failed to initialize in time.

     ral%d: device timeout  A frame dispatched to the hardware for transmis-
     sion did not complete in time.  The driver will reset the hardware.  This
     should not happen.

SEE ALSO
     arp(4), cardbus(4), ifmedia(4), intro(4), netintro(4), pci(4), usb(4),
     ifconfig.if(5), hostapd(8), ifconfig(8)

     Ralink Technology: http://www.ralinktech.com

HISTORY
     The ral driver first appeared in OpenBSD 3.7 and in NetBSD 3.0.  Support
     for the RT2501 and RT2600 chipsets was added in OpenBSD 3.9 and in
     NetBSD 4.0.

AUTHORS
     The ral driver was written by Damien Bergamini <damien@openbsd.org>.

CAVEATS
     Some PCI ral adapters seem to strictly require a system supporting PCI
     2.2 or greater and will likely not work in systems based on older revi-
     sions of the PCI specification.  Check the board's PCI version before
     purchasing the card.

     The USB ral driver supports automatic control of the transmit speed in
     BSS mode only.  Therefore the use of a USB ral adapter in Host AP mode is
     discouraged.

NetBSD 5.0_RC4                   June 7, 2006                   NetBSD 5.0_RC4

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