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32 .Nd Attansic/Atheros L1 Gigabit 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 Attansic/Atheros L1 PCI Express
52 Gigabit Ethernet controllers.
54 All LOMs supported by the
56 driver have TCP/UDP/IP checksum offload for both transmit and
57 receive, TCP segmentation offload (TSO), hardware VLAN tag
58 stripping/insertion features and an interrupt moderation mechanism
59 as well as a 64-bit multicast hash filter.
61 The L1 also supports Jumbo Frames (up to 10240 bytes), which can be
62 configured via the interface MTU setting.
63 Selecting an MTU larger than 1500 bytes with the
65 utility configures the adapter to receive and transmit Jumbo Frames.
69 driver supports the following media types:
70 .Bl -tag -width ".Cm 10baseT/UTP"
72 Enable autoselection of the media type and options.
73 The user can manually override
74 the autoselected mode by adding media options to
79 Set 100Mbps (Fast Ethernet) operation.
81 Set 1000baseTX operation over twisted pair.
86 driver supports the following media options:
87 .Bl -tag -width ".Cm full-duplex"
89 Force full duplex operation.
91 Force half duplex operation.
94 For more information on configuring this device, see
99 driver provides support for LOMs based on
100 Attansic/Atheros L1 Gigabit Ethernet controller chips, including:
137 Tunables can be set at the
139 prompt before booting the kernel or stored in
141 .Bl -tag -width "xxxxxx"
142 .It Va hw.age.msi_disable
143 This tunable disables MSI support on the Ethernet hardware.
144 The default value is 0.
145 .It Va hw.age.msix_disable
146 This tunable disables MSI-X support on the Ethernet hardware.
147 The default value is 0.
150 The following variables are available as both
155 .Bl -tag -width "xxxxxx"
156 .It Va dev.age.%d.int_mod
157 Maximum amount of time to delay interrupt processing in units of
159 The accepted range is 0 to 65000, the default is 50 (100us).
160 Value 0 completely disables the interrupt moderation.
161 .It Va dev.age.%d.process_limit
162 Maximum amount of Rx events to be processed in the event loop before
163 rescheduling a taskqueue.
164 The accepted range is 30 to 255, the default value is 128 events.
165 The interface does not need to be brought down and up again before
166 a change takes effect.
167 .It Va dev.age.%d.stats
168 Display lots of useful MAC counters maintained in the driver.
181 driver was written by
183 .Aq yongari@FreeBSD.org .