bionic (4) if_stge.4freebsd.gz

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NAME
     stge — Sundance/Tamarack TC9021 Gigabit Ethernet adapter driver


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

           device miibus
           device stge

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

           if_stge_load="YES"


DESCRIPTION
     The stge device driver provides support for various NICs based on the Sundance/Tamarack TC9021 Gigabit
     Ethernet controller chip.

     The Sundance/Tamarack TC9021 is found on the D-Link DGE-550T and the Antares Microsystems Gigabit Ethernet
     board.  It uses an external PHY or an external 10-bit interface.

     All NICs supported by the stge driver have TCP/UDP/IP checksum offload for both receive and transmit,
     hardware VLAN tag stripping/insertion features, and receive interrupt moderation mechanism as well as a
     64-bit multicast hash filter.  The Sundance/Tamarack TC9021 supports TBI (ten bit interface) and GMII
     transceivers, which means it can be used with either copper or 1000baseX fiber applications.

     The Sundance/Tamarack TC9021 also supports jumbo frames, which can be configured via the interface MTU
     setting.  Selecting an MTU larger than 1500 bytes with the ifconfig(8) utility configures the adapter to
     receive and transmit jumbo frames.

     The stge driver supports the following media types:

     autoselect   Enable autoselection of the media type and options.  The user can manually override the
                  autoselected mode by adding media options to rc.conf(5).

     10baseT/UTP  Set 10Mbps operation.  The ifconfig(8) mediaopt option can also be used to select either
                  full-duplex or half-duplex modes.

     100baseTX    Set 100Mbps (Fast Ethernet) operation.  The ifconfig(8) mediaopt option can also be used to
                  select either full-duplex or half-duplex modes.

     1000baseTX   Set 1000baseTX operation over twisted pair.  The Sundance/Tamarack supports 1000Mbps in
                  autoselect mode only.

     The stge 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 stge driver provides support for various NICs based on the Sundance/Tamarack TC9021 based Gigabit
     Ethernet controller chips, including:

     •   Antares Microsystems Gigabit Ethernet
     •   ASUS NX1101 Gigabit Ethernet
     •   D-Link DL-4000 Gigabit Ethernet
     •   IC Plus IP1000A Gigabit Ethernet
     •   Sundance ST-2021 Gigabit Ethernet
     •   Sundance ST-2023 Gigabit Ethernet
     •   Sundance TC9021 Gigabit Ethernet
     •   Tamarack TC9021 Gigabit Ethernet


SYSCTL VARIABLES
     The following variables are available as both sysctl(8) variables and loader(8) tunables:

     dev.stge.%d.rxint_nframe
             Number of frames between RxDMAComplete interrupts.  The accepted range is 1 to 255, default value
             is 8 frames.  The interface has to be brought down and up again before a change takes effect.

     dev.stge.%d.rxint_dmawait
             Maximum amount of time to wait in 1us increments before issuing an Rx interrupt if the number of
             frames received is less than rxint_nframe.  The accepted range is 0 to 4194, default value is 30
             microseconds.  The interface has to be brought down and up again before a change takes effect.


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


HISTORY
     The stge driver was ported from NetBSD and first appeared in FreeBSD 6.2.  The NetBSD version was written
     by Jason R. Thorpe <thorpej@NetBSD.org>.


AUTHORS
     The stge driver was ported by Pyun YongHyeon <yongari@FreeBSD.org>.