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ALE(4)		       FreeBSD Kernel Interfaces Manual			ALE(4)

NAME
     ale -- Atheros AR8121/AR8113/AR8114 Gigabit/Fast Ethernet driver

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

	   device miibus
	   device ale

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

	   if_ale_load="YES"

DESCRIPTION
     The ale device driver provides support for	Atheros	AR8121 PCI Express
     Gigabit Ethernet controllers and Atheros AR8113/AR8114 PCI	Express	Fast
     Ethernet controllers.

     All LOMs supported	by the ale driver have TCP/UDP/IP checksum offload for
     both receive and transmit,	TCP segmentation offload (TSO),	hardware VLAN
     tag stripping/insertion features, Wake On Lan (WOL) and an	interrupt coa-
     lescing/moderation	mechanism as well as a 64-bit multicast	hash filter.

     The AR8121	also supports Jumbo Frames (up to 8132 bytes), 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 ale 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.

     100baseTX	  Set 100Mbps (Fast Ethernet) operation.

     1000baseTX	  Set 1000baseTX operation over	twisted	pair.

     The ale 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 ale device driver provides support for	the following Ethernet con-
     trollers:

     +o	 Atheros AR8113	PCI Express Fast Ethernet controller
     +o	 Atheros AR8114	PCI Express Fast Ethernet controller
     +o	 Atheros AR8121	PCI Express Gigabit Ethernet controller

LOADER TUNABLES
     Tunables can be set at the	loader(8) prompt before	booting	the kernel or
     stored in loader.conf(5).

     hw.ale.msi_disable
	     This tunable disables MSI support on the Ethernet hardware.  The
	     default value is 0.

     hw.ale.msix_disable
	     This tunable disables MSI-X support on the	Ethernet hardware.
	     The default value is 0.

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

     dev.ale.%d.int_rx_mod
	     Maximum amount of time to delay receive interrupt processing in
	     units of 1us.  The	accepted range is 0 to 130000, the default is
	     30(30us).	Value 0	completely disables the	interrupt moderation.

     dev.ale.%d.int_tx_mod
	     Maximum amount of time to delay transmit interrupt	processing in
	     units of 1us.  The	accepted range is 0 to 130000, the default is
	     1000(1ms).	 Value 0 completely disables the interrupt moderation.

     dev.ale.%d.process_limit
	     Maximum amount of Rx frames to be processed in the	event loop
	     before rescheduling a taskqueue.  The accepted range is 32	to
	     255, the default value is 128 events.  The	interface does not
	     need 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), vlan(4),
     ifconfig(8)

HISTORY
     The ale driver was	written	by Pyun	YongHyeon <yongari@FreeBSD.org>.  It
     first appeared in FreeBSD 7.1.

FreeBSD	10.1		       November	12, 2008		  FreeBSD 10.1

NAME | SYNOPSIS | DESCRIPTION | HARDWARE | LOADER TUNABLES | SYSCTL VARIABLES | SEE ALSO | HISTORY

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