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39 .Nd "Intel(R) PRO/1000 Gigabit Ethernet adapter driver"
41 To compile this driver into the kernel,
42 place the following lines in your
43 kernel configuration file:
44 .Bd -ragged -offset indent
49 Alternatively, to load the driver as a
50 module at boot time, place the following line in
52 .Bd -literal -offset indent
58 driver provides support for PCI Gigabit Ethernet adapters based on
59 the Intel 82540, 82541ER, 82541PI, 82542, 82543, 82544, 82545, 82546,
60 82546EB, 82546GB, 82547, 82571, 81572, 82573, and 82574 Ethernet
65 driver also provides support for PCI Express Gigabit Ethernet adapters
66 based on the Intel 82575, 82576, 82580, i21x and i35x.
68 The driver supports Transmit/Receive checksum offload and Jumbo Frames
69 on all but 82542-based adapters.
71 Furthermore it supports TCP segmentation offload (TSO) on all adapters but
72 those based on the 82543, 82544 and 82547 controller chips.
73 The identification LEDs of the adapters supported by the
75 driver can be controlled via the
77 API for localization purposes.
78 For further hardware information, see the
80 included with the driver.
82 For questions related to hardware requirements, refer to the
83 documentation supplied with your Intel PRO/1000 adapter.
84 All hardware requirements listed apply to use with
87 Support for Jumbo Frames is provided via the interface MTU setting.
88 Selecting an MTU larger than 1500 bytes with the
90 utility configures the adapter to receive and transmit Jumbo Frames.
91 The maximum MTU size for Jumbo Frames is 16114.
93 This driver supports hardware assisted VLANs.
96 driver supports the following media types:
97 .Bl -tag -width ".Cm 10baseT/UTP"
99 Enables auto-negotiation for speed and duplex.
101 Sets 10Mbps operation.
108 Sets 100Mbps operation.
115 Sets 1000Mbps operation.
118 mode is supported at this speed.
120 Sets 1000Mbps operation.
123 mode is supported at this speed.
128 driver supports the following media options:
129 .Bl -tag -width ".Cm full-duplex"
131 Forces full-duplex operation
133 Forces half-duplex operation.
142 is not specified, the driver defaults to
145 For more information on configuring this device, see
150 driver supports Gigabit Ethernet adapters based on the Intel
151 82540, 82541ER, 82541PI, 82542, 82543, 82544, 82545, 82546, 82546EB,
152 82546GB, 82547, 82571, 82572, 82573, 82574, 82575, 82576, and 82580
157 Intel Gigabit ET Dual Port Server Adapter (82576)
159 Intel Gigabit VT Quad Port Server Adapter (82575)
161 Intel Single, Dual and Quad Gigabit Ethernet Controller (82580)
163 Intel i210 and i211 Gigabit Ethernet Controller
165 Intel i350 and i354 Gigabit Ethernet Controller
167 Intel PRO/1000 CT Network Connection (82547)
169 Intel PRO/1000 F Server Adapter (82543)
171 Intel PRO/1000 Gigabit Server Adapter (82542)
173 Intel PRO/1000 GT Desktop Adapter (82541PI)
175 Intel PRO/1000 MF Dual Port Server Adapter (82546)
177 Intel PRO/1000 MF Server Adapter (82545)
179 Intel PRO/1000 MF Server Adapter (LX) (82545)
181 Intel PRO/1000 MT Desktop Adapter (82540)
183 Intel PRO/1000 MT Desktop Adapter (82541)
185 Intel PRO/1000 MT Dual Port Server Adapter (82546)
187 Intel PRO/1000 MT Quad Port Server Adapter (82546EB)
189 Intel PRO/1000 MT Server Adapter (82545)
191 Intel PRO/1000 PF Dual Port Server Adapter (82571)
193 Intel PRO/1000 PF Quad Port Server Adapter (82571)
195 Intel PRO/1000 PF Server Adapter (82572)
197 Intel PRO/1000 PT Desktop Adapter (82572)
199 Intel PRO/1000 PT Dual Port Server Adapter (82571)
201 Intel PRO/1000 PT Quad Port Server Adapter (82571)
203 Intel PRO/1000 PT Server Adapter (82572)
205 Intel PRO/1000 T Desktop Adapter (82544)
207 Intel PRO/1000 T Server Adapter (82543)
209 Intel PRO/1000 XF Server Adapter (82544)
211 Intel PRO/1000 XT Server Adapter (82544)
214 Tunables can be set at the
216 prompt before booting the kernel or stored in
220 for per-instance variables.
221 .Bl -tag -width indent
222 .It Va hw.em.disable_crc_stripping
223 Disable or enable hardware stripping of CRC field.
224 This is mostly useful on BMC/IPMI shared interfaces where stripping the CRC
225 causes remote access over IPMI to fail.
227 .It Va hw.em.eee_setting
228 Disable or enable Energy Efficient Ethernet.
229 Default 1 (disabled).
230 .It Va hw.em.smart_pwr_down
231 Enable or disable smart power down features on newer adapters.
232 Default 0 (disabled).
234 Show bad packets when in promiscuous mode.
236 .It Va hw.em.rx_int_delay
237 This value delays the generation of receive interrupts in units of
239 The default value is 0, since adapters may hang with this feature
241 .It Va hw.em.rx_abs_int_delay
243 .Va hw.em.rx_int_delay
244 is non-zero, this tunable limits the maximum delay in which a receive
245 interrupt is generated.
246 .It Va hw.em.tx_int_delay
247 This value delays the generation of transmit interrupts in units of
249 The default value is 64.
250 .It Va hw.em.tx_abs_int_delay
252 .Va hw.em.tx_int_delay
253 is non-zero, this tunable limits the maximum delay in which a transmit
254 interrupt is generated.
255 .It Va hw.em.max_interrupt_rate
256 Maximum interrupts per second.
257 The default value is 8000.
258 .It Va hw.em.rx_process_limit
259 Maximum number of received packets to process at a time, -1 means unlimited.
260 The default value is 100.
263 .Bl -tag -width /dev/led/em*
265 identification LED device nodes
268 Make the identification LED of em0 blink:
270 .Dl "echo f2 > /dev/led/em0"
272 Turn the identification LED of em0 off again:
274 .Dl "echo 0 > /dev/led/em0"
277 .It "em%d: Unable to allocate bus resource: memory"
278 A fatal initialization error has occurred.
279 .It "em%d: Unable to allocate bus resource: interrupt"
280 A fatal initialization error has occurred.
281 .It "em%d: watchdog timeout -- resetting"
282 The device has stopped responding to the network, or there is a problem with
283 the network connection (cable).
286 For general information and support,
287 go to the Intel support website at:
288 .Pa http://support.intel.com .
290 If an issue is identified with the released source code on the supported kernel
291 with a supported adapter, email the specific information related to the
293 .Aq Mt freebsd@intel.com .
307 device driver first appeared in
310 was merged with the igb device driver and converted to the iflib framework in
316 driver was originally written by
317 .An Intel Corporation Aq Mt freebsd@intel.com .
318 It was merged with igb driver and converted to the iflib framework by
319 .An Matthew Macy Aq Mt mmacy@mattmacy.io
321 .An Sean Bruno Aq Mt sbruno@FreeBSD.org .