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NAME
       rue — RealTek RTL8150 USB to Fast Ethernet controller driver


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

             device uhci
             device ohci
             device usb
             device miibus
             device uether
             device rue

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

             if_rue_load="YES"


DESCRIPTION
       The  rue  driver  provides  support  for  USB  Ethernet adapters based on the RealTek RTL8150 USB to Fast
       Ethernet controller chip.

       The RTL8150 contains an integrated Fast Ethernet MAC, which supports both 10 and 100Mbps speeds in either
       full or half duplex.  Although designed to interface with 100Mbps peripheral, the existing  USB  standard
       specifies  a  maximum  transfer  speed  of 12Mbps.  Users should therefore not expect to actually achieve
       100Mbps speeds with this device.

       The rue driver supports the following media types:

       autoselect   Enable auto selection of the media type and options.  The user  can  manually  override  the
                    auto selected mode by adding media options to the /etc/rc.conf file.

       10baseT/UTP  Set  10Mbps operation.  The mediaopt option can also be used to select either full-duplex or
                    half-duplex modes.

       100baseTX    Set 100Mbps (Fast Ethernet) operation.  The mediaopt option  can  also  be  used  to  select
                    either full-duplex or half-duplex modes.

       The rue driver supports the following media options:

       full-duplex  Force full duplex operation.

       half-duplex  Force half duplex operation.

       For more information on configuring this device, see ifconfig(8).


HARDWARE
       The rue driver supports RealTek RTL8150 based USB Ethernet adapters including:

       •   Buffalo (Melco Inc.) LUA-KTX
       •   Green House GH-USB100B
       •   LinkSys USB100M
       •   Billionton 10/100 FastEthernet USBKR2


DIAGNOSTICS
       rue%d:  watchdog timeout  A packet was queued for transmission and a transmit command was issued, however
       the device failed to acknowledge the transmission before a timeout expired.

       rue%d: rx list init failed  The driver failed to allocate an mbuf for the transmitter ring.

       rue%d: no memory for rx list  The driver failed to allocate an mbuf for the receiver ring.


SEE ALSO
       arp(4), miibus(4), netintro(4), ng_ether(4), ifconfig(8)

       RealTek RTL8150 data sheet, http://pdf.seekdatasheet.com/2008714/200807142333305235.pdf.


HISTORY
       The rue device driver first appeared in FreeBSD 5.1.


AUTHORS
       The rue driver was written by Shunsuke Akiyama <akiyama@FreeBSD.org>.

Debian                                          November 24, 2015                                         RUE(4)