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39 .Nd "Intel(R) PRO/1000 PCI Express 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 Express Gigabit Ethernet adapters
58 based on the Intel 82575 and 82576 Ethernet controller chips.
59 The driver supports Transmit/Receive checksum offload and Jumbo
61 Furthermore it supports TCP segmentation offload (TSO) on all
64 For questions related to hardware requirements, refer to the
65 documentation supplied with your Intel PRO/1000 adapter.
66 All hardware requirements listed apply to use with
69 Support for Jumbo Frames is provided via the interface MTU setting.
70 Selecting an MTU larger than 1500 bytes with the
72 utility configures the adapter to receive and transmit Jumbo Frames.
73 The maximum MTU size for Jumbo Frames is 9216.
75 This driver supports hardware assisted VLANs.
78 driver supports the following media types:
79 .Bl -tag -width ".Cm 10baseT/UTP"
81 Enables auto-negotiation for speed and duplex.
83 Sets 10Mbps operation.
90 Sets 100Mbps operation.
97 Sets 1000Mbps operation.
100 mode is supported at this speed.
102 Sets 1000Mbps operation.
105 mode is supported at this speed.
110 driver supports the following media options:
111 .Bl -tag -width ".Cm full-duplex"
113 Forces full-duplex operation
115 Forces half-duplex operation.
124 is not specified, the driver defaults to
127 For more information on configuring this device, see
132 driver supports Gigabit Ethernet adapters based on the Intel 82575 and
133 82576 controller chips:
137 Intel Gigabit ET Dual Port Server Adapter (82576)
139 Intel Gigabit VT Quad Port Server Adapter (82575)
142 Tunables can be set at the
144 prompt before booting the kernel or stored in
146 .Bl -tag -width indent
148 Number of receive descriptors allocated by the driver.
149 The default value is 256.
150 The minimum is 80, and the maximum is 4096.
152 Number of transmit descriptors allocated by the driver.
153 The default value is 256.
154 The minimum is 80, and the maximum is 4096.
155 .It Va hw.igb.enable_aim
156 If set to 1, enable Adaptive Interrupt Moderation.
157 The default is to enable Adaptive Interrupt Moderation.
161 .It "igb%d: Unable to allocate bus resource: memory"
162 A fatal initialization error has occurred.
163 .It "igb%d: Unable to allocate bus resource: interrupt"
164 A fatal initialization error has occurred.
165 .It "igb%d: watchdog timeout -- resetting"
166 The device has stopped responding to the network, or there is a problem with
167 the network connection (cable).
170 For general information and support,
171 go to the Intel support website at:
172 .Pa http://support.intel.com .
174 If an issue is identified with the released source code on the supported kernel
175 with a supported adapter, email the specific information related to the
177 .Aq freebsdnic@mailbox.intel.com .
190 device driver first appeared in
195 driver was written by
196 .An Intel Corporation Aq freebsdnic@mailbox.intel.com .