1 .\" Copyright (c) 2009 Pyun YongHyeon
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
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13 .\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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21 .\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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25 .\" $FreeBSD: head/share/man/man4/alc.4 272731 2014-10-08 05:49:10Z yongari $
32 .Nd Atheros AR813x/AR815x/AR816x/AR817x Gigabit/Fast Ethernet driver
34 To compile this driver into the kernel,
35 place the following lines in your
36 kernel configuration file:
37 .Bd -ragged -offset indent
42 Alternatively, to load the driver as a
43 module at boot time, place the following line in
45 .Bd -literal -offset indent
51 device driver provides support for Atheros AR813x, AR815x, AR816x
52 and AR817x PCI Express Gigabit/Fast Ethernet controllers.
54 All LOMs supported by the
56 driver have TCP/UDP/IP checksum offload for transmit, TCP
57 segmentation offload (TSO), hardware VLAN tag stripping/insertion
58 features, Wake On Lan (WOL) and an interrupt moderation mechanism
59 as well as a 64-bit multicast hash filter.
61 The AR813x, AR815x, AR816x and AR817x supports Jumbo Frames (up to
62 9216, 6144, 9216 and 9216 bytes, respectively), which can be
63 configured via the interface MTU setting.
64 Selecting an MTU larger than 1500 bytes with the
66 utility configures the adapter to receive and transmit Jumbo Frames.
70 driver supports the following media types:
71 .Bl -tag -width ".Cm 10baseT/UTP"
73 Enable autoselection of the media type and options.
74 The user can manually override
75 the autoselected mode by adding media options to
80 Set 100Mbps (Fast Ethernet) operation.
82 Set 1000baseTX operation over twisted pair.
87 driver supports the following media options:
88 .Bl -tag -width ".Cm full-duplex"
90 Force full duplex operation.
92 Force half duplex operation.
95 For more information on configuring this device, see
100 device driver provides support for the following Ethernet controllers:
104 Atheros AR8131 PCI Express Gigabit Ethernet controller
106 Atheros AR8132 PCI Express Fast Ethernet controller
108 Atheros AR8151 v1.0 PCI Express Gigabit Ethernet controller
110 Atheros AR8151 v2.0 PCI Express Gigabit Ethernet controller
112 Atheros AR8152 v1.1 PCI Express Fast Ethernet controller
114 Atheros AR8152 v2.0 PCI Express Fast Ethernet controller
116 Atheros AR8161 PCI Express Gigabit Ethernet controller
118 Atheros AR8162 PCI Express Fast Ethernet controller
120 Atheros AR8171 PCI Express Gigabit Ethernet controller
122 Atheros AR8172 PCI Express Fast Ethernet controller
124 Killer E2200 Gigabit Ethernet controller
127 Tunables can be set at the
129 prompt before booting the kernel or stored in
131 .Bl -tag -width "xxxxxx"
132 .It Va hw.alc.msi.enable
133 By default, the driver will use MSI if it is supported.
134 This behavior can be turned off by setting this tunable to 0.
135 .\".It Va hw.alc.msix_disable
136 .\"This tunable disables MSI-X support on the Ethernet hardware.
137 .\"The default value is 0.
140 The following variables are available as both
145 .Bl -tag -width "xxxxxx"
146 .It Va dev.alc.%d.int_rx_mod
147 Maximum amount of time to delay receive interrupt processing in
149 The accepted range is 0 to 130000, the default is 100(100us).
150 Value 0 completely disables the interrupt moderation.
151 .It Va dev.alc.%d.int_tx_mod
152 Maximum amount of time to delay transmit interrupt processing in
154 The accepted range is 0 to 130000, the default is 1000(1ms).
155 Value 0 completely disables the interrupt moderation.
156 .It Va dev.alc.%d.process_limit
157 Maximum amount of Rx frames to be processed in the event loop before
158 rescheduling a taskqueue.
159 The accepted range is 32 to 255, the default value is 64 events.
160 The interface does not need to be brought down and up again before
161 a change takes effect.
175 driver was written by
176 .An Pyun YongHyeon Aq Mt yongari@FreeBSD.org .
185 .An Samuel J. Greear .