ae — Attansic/Atheros L2 FastEthernet controller driver

       The  Attansic  L2  FastEthernet  controller  supports  DMA  but  does not use a descriptor based transfer
       mechanism via scatter-gather DMA.  Thus the data should be copied to/from the controller memory  on  each
       transmit/receive.   Furthermore,  a  lot of data alignment restrictions apply.  This may introduce a high
       CPU load on systems with heavy network activity.  Luckily enough this should not be a problem  on  modern
       hardware as L2 does not support speeds faster than 100Mbps.

Debian                                            May 17, 2019                                             AE(4)

       The ae device driver provides support for Attansic/Atheros L2 PCIe FastEthernet controllers.

       The  controller supports hardware Ethernet checksum processing, hardware VLAN tag stripping/insertion and
       an interrupt moderation mechanism.  Attansic L2 also features a 64-bit multicast hash filter.

       The ae 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  Select 10Mbps operation.

       100baseTX    Set 100Mbps (FastEthernet) operation.

       The ae driver provides support for 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).

ae%d:watchdogtimeout.  The device has stopped responding to the network, or there is a problem with the
       network connection (cable).

       ae%d:resettimeout.  The card reset operation has been timed out.

       ae%d:Generatingrandomethernetaddress.  No valid Ethernet address was found in the controller NVRAM
       and registers.  Random locally administered address with ASUS OUI identifier will be used instead.

       The  ae  driver  supports  Attansic/Atheros L2 PCIe FastEthernet controllers, and is known to support the
       following hardware:

       •   ASUS EeePC 701
       •   ASUS EeePC 900

       Other hardware may or may not work with this driver.

       The ae driver and this manual page was written by Stanislav Sedov <stas@FreeBSD.org>.  It first  appeared
       in FreeBSD 7.1.

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

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

       ae — Attansic/Atheros L2 FastEthernet controller driver

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

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

             devicemiibusdeviceae

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

             if_ae_load="YES"

       The ae driver collects a number of useful MAC counter during the work.  The statistics is  available  via
       the dev.ae.%d.statssysctl(8) tree, where %d corresponds to the controller number.