1 .\" Copyright (c) 2008 Stanislav Sedov <stas@FreeBSD.org>
2 .\" All rights reserved.
4 .\" Redistribution and use in source and binary forms, with or without
5 .\" modification, are permitted provided that the following conditions
7 .\" 1. Redistributions of source code must retain the above copyright
8 .\" notice, this list of conditions and the following disclaimer.
9 .\" 2. Redistributions in binary form must reproduce the above copyright
10 .\" notice, this list of conditions and the following disclaimer in the
11 .\" documentation and/or other materials provided with the distribution.
13 .\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
14 .\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
15 .\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
16 .\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
17 .\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
18 .\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
19 .\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
20 .\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
21 .\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
22 .\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
25 .\" $FreeBSD: src/share/man/man4/ae.4,v 1.2.2.1.4.1 2009/04/15 03:14:26 kensmith Exp $
32 .Nd "Attansic/Atheros L2 FastEthernet controller driver"
34 To compile this driver into the kernel, place the following lines in your
35 kernel configuration file:
36 .Bd -ragged -offset indent
41 Alternatively, to load the driver as a
42 module at boot time, place the following line in
44 .Bd -literal -offset -indent
50 device driver provides support for Attansic/Atheros L2 PCIe FastEthernet
53 The controller supports hardware Ethernet checksum processing, hardware
54 VLAN tag stripping/insertion and an interrupt moderation mechanism.
55 Attansic L2 also features a 64-bit multicast hash filter.
59 driver supports the following media types:
60 .Bl -tag -width ".Cm 10baseT/UTP"
62 Enable autoselection of the media type and options.
63 The user can manually override the autoselected mode by
64 adding media options to
67 Select 10Mbps operation.
69 Set 100Mbps (FastEthernet) operation.
74 driver provides support for the following media options:
75 .Bl -tag -width ".Cm full-duplex"
77 Force full duplex operation.
79 Force half duplex operation.
82 For more information on configuring this device, see
87 driver supports Attansic/Atheros L2 PCIe FastEthernet controllers, and
88 is known to support the following hardware:
97 Other hardware may or may not work with this driver.
101 driver collects a number of useful MAC counter during the work.
102 The statistics is available via the
105 tree, where %d corresponds to the controller number.
108 .It "ae%d: watchdog timeout."
109 The device has stopped responding to the network, or there is a problem with
110 the network connection (cable).
111 .It "ae%d: reset timeout."
112 The card reset operation has been timed out.
113 .It "ae%d: Generating random ethernet address."
114 No valid ethernet address was found neither in the controller registers not in
116 Random locally administered address with ASUS OUI identifier will be used
128 The Attansic L2 FastEthernet contoller supports DMA but do not use a descriptor
129 based transfer mechanism via scatter-gather DMA.
130 Thus the data should be copied to/from the controller memory on each
132 Furthermore, a lot of data alignment restrictions apply.
133 This may introduce a high CPU load on systems with heavy network activity.
134 Luckily enough this should not be a problem on modern hardware as L2 does
135 not support speeds faster than 100Mbps.
139 driver and this manual page was written by
141 .Aq stas@FreeBSD.org .