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NGE(4)		       FreeBSD Kernel Interfaces Manual			NGE(4)

NAME
     nge -- National Semiconductor PCI Gigabit Ethernet	adapter	driver

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

	   device miibus
	   device nge

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

	   if_nge_load="YES"

DESCRIPTION
     The nge driver provides support for various NICs based on the National
     Semiconductor DP83820 and DP83821 Gigabit Ethernet	controller chips.

     The DP83820 supports TBI (ten bit interface) and GMII transceivers, which
     means it can be used with either copper or	1000baseX fiber	applications.
     The DP83820 supports TCP/IP checksum offload and VLAN tagging/insertion
     as	well as	a 2048-bit multicast hash filter and up	to 4 pattern match
     buffers.

     Most cards	also use the DP83861 10/100/1000 copper	gigabit	transceiver
     chip, which supports autonegotiation of 10, 100 and 1000Mbps modes	in
     full or half duplex.

     The DP83820 and DP83821 also support jumbo	frames,	which can be config-
     ured 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.  Using jumbo frames	can greatly improve perfor-
     mance for certain tasks, such as file transfers and data streaming.

     The nge 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.  full-duplex and
		  half-duplex modes are	supported.

     1000baseSX	  Set 1000Mbps (Gigabit	Ethernet) operation.  Both full-duplex
		  and half-duplex modes	are supported.

     The nge 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 nge driver supports National Semiconductor DP83820 and	DP83821	based
     Gigabit Ethernet adapters including:

     +o	 Addtron AEG320T
     +o	 Ark PC	SOHO-GA2500T (32-bit PCI) and SOHO-GA2000T (64-bit PCI)
     +o	 Asante	FriendlyNet GigaNIX 1000TA and 1000TPC
     +o	 D-Link	DGE-500T
     +o	 Linksys EG1032, revision 1
     +o	 Netgear GA621
     +o	 Netgear GA622T
     +o	 SMC EZ	Card 1000 (SMC9462TX)
     +o	 Surecom Technology EP-320G-TX
     +o	 Trendware TEG-PCITX (32-bit PCI) and TEG-PCITX2 (64-bit PCI)

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

     dev.nge.%d.int_holdoff
	     Maximum amount of time to delay interrupt processing in units of
	     100us.  The accepted range	is 0 to	255, the default is 1(100us).
	     Value 0 completely	disables the interrupt moderation.  The	inter-
	     face has to be brought down and up	again before a change takes
	     effect.

DIAGNOSTICS
     nge%d: couldn't map memory	 A fatal initialization	error has occurred.

     nge%d: couldn't map ports	A fatal	initialization error has occurred.

     nge%d: couldn't map interrupt  A fatal initialization error has occurred.

     nge%d: no memory for softc	struct!	 The driver failed to allocate memory
     for per-device instance information during	initialization.

     nge%d: failed to enable memory mapping!  The driver failed	to initialize
     PCI shared	memory mapping.	 This might happen if the card is not in a
     bus-master	slot.

     nge%d: no memory for jumbo	buffers!  The driver failed to allocate	memory
     for jumbo frames during initialization.

     nge%d: watchdog timeout  The device has stopped responding	to the net-
     work, or there is a problem with the network connection (cable).

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

     National Semiconductor DP83820 datasheet, http://www.national.com.

     National Semiconductor DP83861 datasheet, http://www.national.com.

HISTORY
     The nge device driver first appeared in FreeBSD 4.4.

AUTHORS
     The nge driver was	written	by Bill	Paul <wpaul@bsdi.com>.

FreeBSD	9.2		       November	23, 2010		   FreeBSD 9.2

NAME | SYNOPSIS | DESCRIPTION | HARDWARE | SYSCTL VARIABLES | DIAGNOSTICS | SEE ALSO | HISTORY | AUTHORS

Want to link to this manual page? Use this URL:
<http://www.freebsd.org/cgi/man.cgi?query=nge&sektion=4&manpath=FreeBSD+7.4-RELEASE>

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