1 .\" Copyright (c) 2001-2003, Intel Corporation
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 are met:
7 .\" 1. Redistributions of source code must retain the above copyright notice,
8 .\" this list of conditions and the following disclaimer.
10 .\" 2. Redistributions in binary form must reproduce the above copyright
11 .\" notice, this list of conditions and the following disclaimer in the
12 .\" documentation and/or other materials provided with the distribution.
14 .\" 3. Neither the name of the Intel Corporation nor the names of its
15 .\" contributors may be used to endorse or promote products derived from
16 .\" this software without specific prior written permission.
18 .\" THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
19 .\" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
20 .\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
21 .\" ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
22 .\" LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
23 .\" CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
24 .\" SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
25 .\" INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
26 .\" CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
27 .\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
28 .\" POSSIBILITY OF SUCH DAMAGE.
30 .\" * Other names and brands may be claimed as the property of others.
34 .Dd September 15, 2006
39 .Nd "Intel(R) PRO/1000 Gigabit Ethernet adapter driver"
41 To compile this driver into the kernel,
42 place the following line in your
43 kernel configuration file:
44 .Bd -ragged -offset indent
48 Alternatively, to load the driver as a
49 module at boot time, place the following line in
51 .Bd -literal -offset indent
57 driver provides support for PCI Gigabit Ethernet adapters based on
58 the Intel 82540, 82541ER, 82541PI, 82542, 82543, 82544, 82545, 82546,
59 82546EB, 82546GB, 82547, 82571, 81572 and 82573 Ethernet controller chips.
60 The driver supports Transmit/Receive checksum offload
61 and Jumbo Frames on all but 82542-based adapters.
62 Furthermore it supports TCP segmentation offload (TSO) on all adapters but
63 those based on the 82543, 82544 and 82547 controller chips.
64 For further hardware information, see the
66 included with the driver.
68 For questions related to hardware requirements,
69 refer to the documentation supplied with your Intel PRO/1000 adapter.
70 All hardware requirements listed apply to use with
73 Support for Jumbo Frames is provided via the interface MTU setting.
74 Selecting an MTU larger than 1500 bytes with the
76 utility configures the adapter to receive and transmit Jumbo Frames.
77 The maximum MTU size for Jumbo Frames is 16114.
79 This driver version supports VLANs.
82 driver supports the following media types:
83 .Bl -tag -width ".Cm 10baseT/UTP"
85 Enables auto-negotiation for speed and duplex.
87 Sets 10Mbps operation.
94 Sets 100Mbps operation.
101 Sets 1000Mbps operation.
104 mode is supported at this speed.
106 Sets 1000Mbps operation.
109 mode is supported at this speed.
114 driver supports the following media options:
115 .Bl -tag -width ".Cm full-duplex"
117 Forces full-duplex operation
119 Forces half-duplex operation.
128 is not specified, the driver defaults to
131 For more information on configuring this device, see
136 driver supports Gigabit Ethernet adapters based on the Intel
137 82540, 82541ER, 82541PI, 82542, 82543, 82544, 82545, 82546, 82546EB,
138 82546GB, 82547, 82571, 82572 and 82573 controller chips:
142 Intel PRO/1000 CT Network Connection (82547)
144 Intel PRO/1000 F Server Adapter (82543)
146 Intel PRO/1000 Gigabit Server Adapter (82542)
148 Intel PRO/1000 GT Desktop Adapter (82541PI)
150 Intel PRO/1000 MF Dual Port Server Adapter (82546)
152 Intel PRO/1000 MF Server Adapter (82545)
154 Intel PRO/1000 MF Server Adapter (LX) (82545)
156 Intel PRO/1000 MT Desktop Adapter (82540)
158 Intel PRO/1000 MT Desktop Adapter (82541)
160 Intel PRO/1000 MT Dual Port Server Adapter (82546)
162 Intel PRO/1000 MT Quad Port Server Adapter (82546EB)
164 Intel PRO/1000 MT Server Adapter (82545)
166 Intel PRO/1000 T Desktop Adapter (82544)
168 Intel PRO/1000 T Server Adapter (82543)
170 Intel PRO/1000 XF Server Adapter (82544)
172 Intel PRO/1000 XT Server Adapter (82544)
175 Tunables can be set at the
177 prompt before booting the kernel or stored in
179 .Bl -tag -width indent
181 Number of receive descriptors allocated by the driver.
182 The default value is 256.
183 The 82542 and 82543-based adapters can handle up to 256 descriptors,
184 while others can have up to 4096.
186 Number of transmit descriptors allocated by the driver.
187 The default value is 256.
188 The 82542 and 82543-based adapters can handle up to 256 descriptors,
189 while others can have up to 4096.
190 .It Va hw.em.rx_int_delay
191 This value delays the generation of receive interrupts in units of
193 The default value is 0, since adapters may hang with this feature
195 .It Va hw.em.rx_abs_int_delay
197 .Va hw.em.rx_int_delay
198 is non-zero, this tunable limits the maximum delay in which a receive
199 interrupt is generated.
200 .It Va hw.em.tx_int_delay
201 This value delays the generation of transmit interrupts in units of
203 The default value is 64.
204 .It Va hw.em.tx_abs_int_delay
206 .Va hw.em.tx_int_delay
207 is non-zero, this tunable limits the maximum delay in which a transmit
208 interrupt is generated.
212 .It "em%d: Unable to allocate bus resource: memory"
213 A fatal initialization error has occurred.
214 .It "em%d: Unable to allocate bus resource: interrupt"
215 A fatal initialization error has occurred.
216 .It "em%d: watchdog timeout -- resetting"
217 The device has stopped responding to the network, or there is a problem with
218 the network connection (cable).
221 For general information and support,
222 go to the Intel support website at:
223 .Pa http://support.intel.com .
225 If an issue is identified with the released source code on the supported kernel
226 with a supported adapter, email the specific information related to the
228 .Aq freebsdnic@mailbox.intel.com .
240 device driver first appeared in
245 driver was written by
246 .An Intel Corporation Aq freebsdnic@mailbox.intel.com .
248 Hardware-assisted VLAN processing is disabled by default.
249 You can enable it on an