2003-01-24 21:28:20 +00:00
|
|
|
.\" Copyright (c) 2001-2003, Intel Corporation
|
2001-12-02 07:45:22 +00:00
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|
|
.\" All rights reserved.
|
2003-05-21 15:55:40 +00:00
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.\"
|
2003-01-24 21:28:20 +00:00
|
|
|
.\" Redistribution and use in source and binary forms, with or without
|
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.\" modification, are permitted provided that the following conditions are met:
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.\"
|
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|
.\" 1. Redistributions of source code must retain the above copyright notice,
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.\" this list of conditions and the following disclaimer.
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.\"
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.\" 2. Redistributions in binary form must reproduce the above copyright
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|
.\" notice, this list of conditions and the following disclaimer in the
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.\" documentation and/or other materials provided with the distribution.
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.\"
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.\" 3. Neither the name of the Intel Corporation nor the names of its
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.\" contributors may be used to endorse or promote products derived from
|
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.\" this software without specific prior written permission.
|
2001-12-02 07:45:22 +00:00
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.\"
|
2002-05-30 08:45:06 +00:00
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.\" THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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.\" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
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|
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.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
2003-01-24 21:28:20 +00:00
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.\" ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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.\" LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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.\" CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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.\" SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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.\" INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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.\" CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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.\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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.\" POSSIBILITY OF SUCH DAMAGE.
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2001-12-02 07:45:22 +00:00
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.\"
|
2002-04-30 17:14:51 +00:00
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.\" * Other names and brands may be claimed as the property of others.
|
2002-03-18 12:25:33 +00:00
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.\"
|
2002-04-30 17:14:51 +00:00
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.\" $FreeBSD$
|
2002-07-26 20:50:35 +00:00
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.\"
|
2017-03-22 21:32:44 +00:00
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|
.Dd March 22, 2017
|
2001-12-02 07:45:22 +00:00
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|
|
.Dt EM 4
|
2002-05-30 08:45:06 +00:00
|
|
|
.Os
|
2001-12-02 07:45:22 +00:00
|
|
|
.Sh NAME
|
|
|
|
.Nm em
|
2005-01-05 04:31:00 +00:00
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|
|
.Nd "Intel(R) PRO/1000 Gigabit Ethernet adapter driver"
|
2001-12-02 07:45:22 +00:00
|
|
|
.Sh SYNOPSIS
|
2005-10-07 02:32:16 +00:00
|
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|
To compile this driver into the kernel,
|
2005-11-18 10:56:28 +00:00
|
|
|
place the following line in your
|
2005-07-21 05:02:39 +00:00
|
|
|
kernel configuration file:
|
2005-07-19 00:26:30 +00:00
|
|
|
.Bd -ragged -offset indent
|
2001-12-02 07:45:22 +00:00
|
|
|
.Cd "device em"
|
2005-07-19 00:26:30 +00:00
|
|
|
.Ed
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.Pp
|
2005-10-07 02:32:16 +00:00
|
|
|
Alternatively, to load the driver as a
|
|
|
|
module at boot time, place the following line in
|
2005-07-19 00:26:30 +00:00
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|
|
.Xr loader.conf 5 :
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|
.Bd -literal -offset indent
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|
if_em_load="YES"
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|
|
.Ed
|
2001-12-02 07:45:22 +00:00
|
|
|
.Sh DESCRIPTION
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|
The
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.Nm
|
2004-09-09 23:41:03 +00:00
|
|
|
driver provides support for PCI Gigabit Ethernet adapters based on
|
2005-01-05 04:31:00 +00:00
|
|
|
the Intel 82540, 82541ER, 82541PI, 82542, 82543, 82544, 82545, 82546,
|
2008-10-06 20:45:08 +00:00
|
|
|
82546EB, 82546GB, 82547, 82571, 81572, 82573, and 82574 Ethernet
|
|
|
|
controller chips.
|
2017-03-22 21:32:44 +00:00
|
|
|
.Pp
|
|
|
|
The
|
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|
|
.Nm
|
|
|
|
driver also provides support for PCI Express Gigabit Ethernet adapters
|
|
|
|
based on the Intel 82575, 82576, 82580, i21x and i35x.
|
|
|
|
.Pp
|
|
|
|
The driver supports Transmit/Receive checksum offload and Jumbo Frames
|
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|
|
on all but 82542-based adapters.
|
|
|
|
.Pp
|
2006-09-15 20:52:51 +00:00
|
|
|
Furthermore it supports TCP segmentation offload (TSO) on all adapters but
|
|
|
|
those based on the 82543, 82544 and 82547 controller chips.
|
2010-05-14 20:11:30 +00:00
|
|
|
The identification LEDs of the adapters supported by the
|
|
|
|
.Nm
|
|
|
|
driver can be controlled via the
|
|
|
|
.Xr led 4
|
|
|
|
API for localization purposes.
|
2004-09-09 23:41:03 +00:00
|
|
|
For further hardware information, see the
|
2002-05-30 08:45:06 +00:00
|
|
|
.Pa README
|
2001-12-02 07:45:22 +00:00
|
|
|
included with the driver.
|
|
|
|
.Pp
|
2017-03-22 21:32:44 +00:00
|
|
|
For questions related to hardware requirements, refer to the
|
|
|
|
documentation supplied with your Intel PRO/1000 adapter.
|
2002-05-30 08:45:06 +00:00
|
|
|
All hardware requirements listed apply to use with
|
2002-03-18 12:25:33 +00:00
|
|
|
.Fx .
|
2001-12-02 07:45:22 +00:00
|
|
|
.Pp
|
2002-02-13 18:19:27 +00:00
|
|
|
Support for Jumbo Frames is provided via the interface MTU setting.
|
2001-12-02 07:45:22 +00:00
|
|
|
Selecting an MTU larger than 1500 bytes with the
|
|
|
|
.Xr ifconfig 8
|
2002-02-13 18:19:27 +00:00
|
|
|
utility configures the adapter to receive and transmit Jumbo Frames.
|
|
|
|
The maximum MTU size for Jumbo Frames is 16114.
|
2001-12-02 07:45:22 +00:00
|
|
|
.Pp
|
2017-03-22 21:32:44 +00:00
|
|
|
This driver supports hardware assisted VLANs.
|
2001-12-02 07:45:22 +00:00
|
|
|
The
|
|
|
|
.Nm
|
|
|
|
driver supports the following media types:
|
2002-03-18 12:25:33 +00:00
|
|
|
.Bl -tag -width ".Cm 10baseT/UTP"
|
|
|
|
.It Cm autoselect
|
2001-12-02 07:45:22 +00:00
|
|
|
Enables auto-negotiation for speed and duplex.
|
2002-03-18 12:25:33 +00:00
|
|
|
.It Cm 10baseT/UTP
|
2001-12-02 07:45:22 +00:00
|
|
|
Sets 10Mbps operation.
|
2002-02-13 18:19:27 +00:00
|
|
|
Use the
|
2002-03-18 12:25:33 +00:00
|
|
|
.Cm mediaopt
|
2002-02-13 18:19:27 +00:00
|
|
|
option to select
|
2002-03-18 12:25:33 +00:00
|
|
|
.Cm full-duplex
|
2002-02-13 18:19:27 +00:00
|
|
|
mode.
|
2002-03-18 12:25:33 +00:00
|
|
|
.It Cm 100baseTX
|
2001-12-02 07:45:22 +00:00
|
|
|
Sets 100Mbps operation.
|
2002-02-13 18:19:27 +00:00
|
|
|
Use the
|
2002-03-18 12:25:33 +00:00
|
|
|
.Cm mediaopt
|
2002-02-13 18:19:27 +00:00
|
|
|
option to select
|
2002-03-18 12:25:33 +00:00
|
|
|
.Cm full-duplex
|
2002-02-13 18:19:27 +00:00
|
|
|
mode.
|
2002-03-18 12:25:33 +00:00
|
|
|
.It Cm 1000baseSX
|
2001-12-02 07:45:22 +00:00
|
|
|
Sets 1000Mbps operation.
|
2002-05-30 08:45:06 +00:00
|
|
|
Only
|
2002-03-18 12:25:33 +00:00
|
|
|
.Cm full-duplex
|
2001-12-02 07:45:22 +00:00
|
|
|
mode is supported at this speed.
|
2002-03-18 12:25:33 +00:00
|
|
|
.It Cm 1000baseTX
|
2001-12-02 07:45:22 +00:00
|
|
|
Sets 1000Mbps operation.
|
2002-05-30 08:45:06 +00:00
|
|
|
Only
|
2002-03-18 12:25:33 +00:00
|
|
|
.Cm full-duplex
|
2001-12-02 07:45:22 +00:00
|
|
|
mode is supported at this speed.
|
|
|
|
.El
|
|
|
|
.Pp
|
|
|
|
The
|
|
|
|
.Nm
|
|
|
|
driver supports the following media options:
|
2002-03-18 12:25:33 +00:00
|
|
|
.Bl -tag -width ".Cm full-duplex"
|
|
|
|
.It Cm full-duplex
|
2002-02-13 18:19:27 +00:00
|
|
|
Forces full-duplex operation
|
2002-03-18 12:25:33 +00:00
|
|
|
.It Cm half-duplex
|
2002-02-13 18:19:27 +00:00
|
|
|
Forces half-duplex operation.
|
2001-12-02 07:45:22 +00:00
|
|
|
.El
|
|
|
|
.Pp
|
2002-05-30 08:45:06 +00:00
|
|
|
Only use
|
|
|
|
.Cm mediaopt
|
|
|
|
to set the driver to
|
|
|
|
.Cm full-duplex .
|
|
|
|
If
|
|
|
|
.Cm mediaopt
|
|
|
|
is not specified, the driver defaults to
|
2002-03-18 12:25:33 +00:00
|
|
|
.Cm half-duplex .
|
2002-02-13 18:19:27 +00:00
|
|
|
.Pp
|
2001-12-02 07:45:22 +00:00
|
|
|
For more information on configuring this device, see
|
|
|
|
.Xr ifconfig 8 .
|
2004-09-09 23:41:03 +00:00
|
|
|
.Sh HARDWARE
|
|
|
|
The
|
|
|
|
.Nm
|
|
|
|
driver supports Gigabit Ethernet adapters based on the Intel
|
2005-01-05 04:31:00 +00:00
|
|
|
82540, 82541ER, 82541PI, 82542, 82543, 82544, 82545, 82546, 82546EB,
|
2017-03-22 21:32:44 +00:00
|
|
|
82546GB, 82547, 82571, 82572, 82573, 82574, 82575, 82576, and 82580
|
|
|
|
controller chips:
|
2004-09-09 23:41:03 +00:00
|
|
|
.Pp
|
|
|
|
.Bl -bullet -compact
|
|
|
|
.It
|
2017-03-22 21:32:44 +00:00
|
|
|
Intel Gigabit ET Dual Port Server Adapter (82576)
|
|
|
|
.It
|
|
|
|
Intel Gigabit VT Quad Port Server Adapter (82575)
|
|
|
|
.It
|
|
|
|
Intel Single, Dual and Quad Gigabit Ethernet Controller (82580)
|
|
|
|
.It
|
|
|
|
Intel i210 and i211 Gigabit Ethernet Controller
|
|
|
|
.It
|
|
|
|
Intel i350 and i354 Gigabit Ethernet Controller
|
|
|
|
.It
|
2004-09-09 23:41:03 +00:00
|
|
|
Intel PRO/1000 CT Network Connection (82547)
|
|
|
|
.It
|
|
|
|
Intel PRO/1000 F Server Adapter (82543)
|
|
|
|
.It
|
|
|
|
Intel PRO/1000 Gigabit Server Adapter (82542)
|
|
|
|
.It
|
|
|
|
Intel PRO/1000 GT Desktop Adapter (82541PI)
|
|
|
|
.It
|
|
|
|
Intel PRO/1000 MF Dual Port Server Adapter (82546)
|
|
|
|
.It
|
|
|
|
Intel PRO/1000 MF Server Adapter (82545)
|
|
|
|
.It
|
|
|
|
Intel PRO/1000 MF Server Adapter (LX) (82545)
|
|
|
|
.It
|
|
|
|
Intel PRO/1000 MT Desktop Adapter (82540)
|
|
|
|
.It
|
|
|
|
Intel PRO/1000 MT Desktop Adapter (82541)
|
|
|
|
.It
|
|
|
|
Intel PRO/1000 MT Dual Port Server Adapter (82546)
|
|
|
|
.It
|
|
|
|
Intel PRO/1000 MT Quad Port Server Adapter (82546EB)
|
|
|
|
.It
|
|
|
|
Intel PRO/1000 MT Server Adapter (82545)
|
|
|
|
.It
|
2008-10-06 20:45:08 +00:00
|
|
|
Intel PRO/1000 PF Dual Port Server Adapter (82571)
|
|
|
|
.It
|
|
|
|
Intel PRO/1000 PF Quad Port Server Adapter (82571)
|
|
|
|
.It
|
|
|
|
Intel PRO/1000 PF Server Adapter (82572)
|
|
|
|
.It
|
|
|
|
Intel PRO/1000 PT Desktop Adapter (82572)
|
|
|
|
.It
|
|
|
|
Intel PRO/1000 PT Dual Port Server Adapter (82571)
|
|
|
|
.It
|
|
|
|
Intel PRO/1000 PT Quad Port Server Adapter (82571)
|
|
|
|
.It
|
|
|
|
Intel PRO/1000 PT Server Adapter (82572)
|
|
|
|
.It
|
2004-09-09 23:41:03 +00:00
|
|
|
Intel PRO/1000 T Desktop Adapter (82544)
|
|
|
|
.It
|
|
|
|
Intel PRO/1000 T Server Adapter (82543)
|
|
|
|
.It
|
|
|
|
Intel PRO/1000 XF Server Adapter (82544)
|
|
|
|
.It
|
|
|
|
Intel PRO/1000 XT Server Adapter (82544)
|
|
|
|
.El
|
2005-11-17 15:10:40 +00:00
|
|
|
.Sh LOADER TUNABLES
|
|
|
|
Tunables can be set at the
|
|
|
|
.Xr loader 8
|
|
|
|
prompt before booting the kernel or stored in
|
2005-11-18 10:56:28 +00:00
|
|
|
.Xr loader.conf 5 .
|
2005-11-17 15:10:40 +00:00
|
|
|
.Bl -tag -width indent
|
2015-08-16 19:06:23 +00:00
|
|
|
.It Va hw.em.disable_crc_stripping
|
|
|
|
Disable or enable hardware stripping of CRC field.
|
|
|
|
This is mostly useful on BMC/IPMI shared interfaces where stripping the CRC
|
|
|
|
causes remote access over IPMI to fail.
|
|
|
|
Default 0 (enabled).
|
Change EM_MULTIQUEUE to a real kernconf entry and enable support for
up to 2 rx/tx queues for the 82574.
Program the 82574 to enable 5 msix vectors, assign 1 to each rx queue,
1 to each tx queue and 1 to the link handler.
Inspired by DragonFlyBSD, enable some RSS logic for handling tx queue
handling/processing.
Move multiqueue handler functions so that they line up better in a diff
review to if_igb.c
Always enqueue tx work to be done in em_mq_start, if unable to acquire
the TX lock, then this will be processed in the background later by the
taskqueue. Remove mbuf argument from em_start_mq_locked() as the work
is always enqueued. (stolen from igb)
Setup TARC, TXDCTL and RXDCTL registers for better performance and stability
in multiqueue and singlequeue implementations. Handle Intel errata 3 and
generic multiqueue behavior with the initialization of TARC(0) and TARC(1)
Bind interrupt threads to cpus in order. (stolen from igb)
Add 2 new DDB functions, one to display the queue(s) and their settings and
one to reset the adapter. Primarily used for debugging.
In the multiqueue configuration, bump RXD and TXD ring size to max for the
adapter (4096). Setup an RDTR of 64 and an RADV of 128 in multiqueue configuration
to cut down on the number of interrupts. RADV was arbitrarily set to 2x RDTR
and can be adjusted as needed.
Cleanup the display in top a bit to make it clearer where the taskqueue threads
are running and what they should be doing.
Ensure that both queues are processed by em_local_timer() by writing them both
to the IMS register to generate soft interrupts.
Ensure that an soft interrupt is generated when em_msix_link() is run so that
any races between assertion of the link/status interrupt and a rx/tx interrupt
are handled.
Document existing tuneables: hw.em.eee_setting, hw.em.msix, hw.em.smart_pwr_down, hw.em.sbp
Document use of hw.em.num_queues and the new kernel option EM_MULTIQUEUE
Thanks to Intel for their continued support of FreeBSD.
Reviewed by: erj jfv hiren gnn wblock
Obtained from: Intel Corporation
MFC after: 2 weeks
Relnotes: Yes
Sponsored by: Limelight Networks
Differential Revision: https://reviews.freebsd.org/D1994
2015-06-03 18:01:09 +00:00
|
|
|
.It Va hw.em.eee_setting
|
|
|
|
Disable or enable Energy Efficient Ethernet.
|
|
|
|
Default 1 (disabled).
|
|
|
|
.It Va hw.em.msix
|
|
|
|
Enable or disable MSI-X style interrupts.
|
|
|
|
Default 1 (enabled).
|
|
|
|
.It Va hw.em.smart_pwr_down
|
|
|
|
Enable or disable smart power down features on newer adapters.
|
|
|
|
Default 0 (disabled).
|
|
|
|
.It Va hw.em.sbp
|
|
|
|
Show bad packets when in promiscuous mode.
|
|
|
|
Default 0 (off).
|
2005-11-17 15:10:40 +00:00
|
|
|
.It Va hw.em.rxd
|
|
|
|
Number of receive descriptors allocated by the driver.
|
2011-10-11 15:41:07 +00:00
|
|
|
The default value is 1024 for adapters newer than 82547,
|
|
|
|
and 256 for older ones.
|
2005-11-17 15:10:40 +00:00
|
|
|
The 82542 and 82543-based adapters can handle up to 256 descriptors,
|
|
|
|
while others can have up to 4096.
|
|
|
|
.It Va hw.em.txd
|
|
|
|
Number of transmit descriptors allocated by the driver.
|
2011-10-11 15:41:07 +00:00
|
|
|
The default value is 1024 for adapters newer than 82547,
|
|
|
|
and 256 for older ones.
|
2005-11-17 15:10:40 +00:00
|
|
|
The 82542 and 82543-based adapters can handle up to 256 descriptors,
|
|
|
|
while others can have up to 4096.
|
|
|
|
.It Va hw.em.rx_int_delay
|
|
|
|
This value delays the generation of receive interrupts in units of
|
|
|
|
1.024 microseconds.
|
|
|
|
The default value is 0, since adapters may hang with this feature
|
|
|
|
being enabled.
|
|
|
|
.It Va hw.em.rx_abs_int_delay
|
|
|
|
If
|
|
|
|
.Va hw.em.rx_int_delay
|
|
|
|
is non-zero, this tunable limits the maximum delay in which a receive
|
|
|
|
interrupt is generated.
|
|
|
|
.It Va hw.em.tx_int_delay
|
|
|
|
This value delays the generation of transmit interrupts in units of
|
|
|
|
1.024 microseconds.
|
|
|
|
The default value is 64.
|
|
|
|
.It Va hw.em.tx_abs_int_delay
|
|
|
|
If
|
|
|
|
.Va hw.em.tx_int_delay
|
|
|
|
is non-zero, this tunable limits the maximum delay in which a transmit
|
|
|
|
interrupt is generated.
|
2011-06-02 09:56:53 +00:00
|
|
|
.Sh FILES
|
|
|
|
.Bl -tag -width /dev/led/em*
|
|
|
|
.It Pa /dev/led/em*
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identification LED device nodes
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.El
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.Sh EXAMPLES
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Make the identification LED of em0 blink:
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.Pp
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.Dl "echo f2 > /dev/led/em0"
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.Pp
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Turn the identification LED of em0 off again:
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.Pp
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.Dl "echo 0 > /dev/led/em0"
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2001-12-02 07:45:22 +00:00
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.Sh DIAGNOSTICS
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.Bl -diag
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.It "em%d: Unable to allocate bus resource: memory"
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A fatal initialization error has occurred.
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.It "em%d: Unable to allocate bus resource: interrupt"
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A fatal initialization error has occurred.
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.It "em%d: watchdog timeout -- resetting"
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The device has stopped responding to the network, or there is a problem with
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the network connection (cable).
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.El
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.Sh SUPPORT
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2002-05-30 08:45:06 +00:00
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For general information and support,
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2002-02-13 18:19:27 +00:00
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go to the Intel support website at:
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2002-05-30 08:45:06 +00:00
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.Pa http://support.intel.com .
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2001-12-02 07:45:22 +00:00
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.Pp
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2002-05-30 08:45:06 +00:00
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If an issue is identified with the released source code on the supported kernel
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with a supported adapter, email the specific information related to the
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issue to
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2014-06-26 21:46:14 +00:00
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.Aq Mt freebsd@intel.com .
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2001-12-02 07:45:22 +00:00
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.Sh SEE ALSO
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2007-01-30 08:40:04 +00:00
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.Xr altq 4 ,
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2001-12-02 07:45:22 +00:00
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.Xr arp 4 ,
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2010-05-14 20:11:30 +00:00
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.Xr led 4 ,
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2002-05-30 08:45:06 +00:00
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.Xr netintro 4 ,
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2002-04-30 17:14:51 +00:00
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.Xr ng_ether 4 ,
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2004-11-24 19:06:43 +00:00
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.Xr polling 4 ,
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2002-05-30 08:45:06 +00:00
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.Xr vlan 4 ,
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2001-12-02 07:45:22 +00:00
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.Xr ifconfig 8
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.Sh HISTORY
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The
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.Nm
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device driver first appeared in
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2002-02-13 18:19:27 +00:00
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.Fx 4.4 .
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2017-03-22 21:32:44 +00:00
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.Nm
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was merged with the igb device driver and converted to the iflib framework in
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.Fx 12.0 .
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2001-12-02 07:45:22 +00:00
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.Sh AUTHORS
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2017-03-22 21:32:44 +00:00
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.An -nosplit
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2001-12-02 07:45:22 +00:00
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The
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.Nm
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2017-03-22 21:32:44 +00:00
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driver was originally written by
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2014-06-26 21:46:14 +00:00
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.An Intel Corporation Aq Mt freebsd@intel.com .
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2017-03-22 21:32:44 +00:00
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It was merged with igb driver and converted to the iflib framework by
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2017-12-19 17:59:00 +00:00
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.An Matthew Macy Aq Mt mmacy@mattmacy.io
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2017-03-22 21:32:44 +00:00
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and
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.An Sean Bruno Aq Mt sbruno@FreeBSD.org .
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