NAME

     age — Attansic/Atheros L1 Gigabit Ethernet driver

SYNOPSIS

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

           device miibus
           device age

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

           if_age_load="YES"

DESCRIPTION

     The age device driver provides support for Attansic/Atheros L1 PCI Express Gigabit Ethernet
     controllers.

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

     The L1 also supports Jumbo Frames (up to 10240 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 age 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 age 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 age driver provides support for LOMs based on Attansic/Atheros L1 Gigabit Ethernet
     controller chips, including:

     •   ASUS M2N8-VMX
     •   ASUS M2V
     •   ASUS M3A
     •   ASUS P2-M2A590G
     •   ASUS P5B-E
     •   ASUS P5B-MX/WIFI-AP
     •   ASUS P5B-VMSE
     •   ASUS P5K
     •   ASUS P5KC
     •   ASUS P5KPL-C
     •   ASUS P5KPL-VM
     •   ASUS P5K-SE
     •   ASUS P5K-V
     •   ASUS P5L-MX
     •   ASUS P5DL2-VM
     •   ASUS P5L-VM 1394
     •   ASUS G2S

LOADER TUNABLES

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

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

     hw.age.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.age.%d.int_mod
             Maximum amount of time to delay interrupt processing in units of 2us.  The accepted
             range is 0 to 65000, the default is 50 (100us).  Value 0 completely disables the
             interrupt moderation.

     dev.age.%d.process_limit
             Maximum amount of Rx events to be processed in the event loop before rescheduling a
             taskqueue.  The accepted range is 30 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.

     dev.age.%d.stats
             Display lots of useful MAC counters maintained in the driver.

SEE ALSO

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

HISTORY

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