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ALE(4)                DragonFly 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, hardware VLAN tag stripping/insertion features
     and an interrupt coalescing/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.

     1000baseT    Set 1000baseT 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
     controllers:

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


SYSCTL VARIABLES

     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.


SEE ALSO

     altq(4), arp(4), ifmedia(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.

DragonFly 4.1                  November 28, 2014                 DragonFly 4.1

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