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freebsd-skq/sys/dev/em/README
Prafulla Deuskar d30350e524 Add support for Quad port adapter 
Add sysctl's to display statistics/debug_info
Set WAIT_FOR_AUTONEG_DEFAULT to zero by default
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$FreeBSD$
FreeBSD* Driver for the Intel(R) PRO/1000 Family of Adapters
============================================================
April 13, 2003
Contents
========
- Overview
- Supported Adapters
- Building and Installation
- Speed and Duplex Configuration
- Additional Configurations
- Known Limitations
- Support
- License
Overview
========
This file describes the FreeBSD* driver, version 1.5.x, for the Intel(R)
PRO/1000 Family of Adapters. This driver has been developed for use with
FreeBSD, version 4.7.
For questions related to hardware requirements, refer to the documentation
supplied with your Intel PRO/1000 adapter. All hardware requirements listed
apply to use with FreeBSD.
Supported Adapters
==================
The following Intel network adapters are compatible with the drivers in this
release:
Controller Adapter Name Board IDs
---------- ------------ ---------
82542 PRO/1000 Gigabit Server Adapter 700262-xxx, 717037-xxx
82543 PRO/1000 F Server Adapter 738640-xxx, A38888-xxx,
A06512-xxx
82543 PRO/1000 T Server Adapter A19845-xxx, A33948-xxx
82544 PRO/1000 XT Server Adapter A51580-xxx
82544 PRO/1000 XF Server Adapter A50484-xxx
82544 PRO/1000 T Desktop Adapter A62947-xxx
82540 PRO/1000 MT Desktop Adapter A78408-xxx
82541 C91016-xxx
82545 PRO/1000 MT Server Adapter A92165-xxx
82545 PRO/1000 MF Server Adapter A91622-xxx
82545 PRO/1000 MF Server Adapter(LX) A91624-xxx
82546 PRO/1000 MT Dual Port Server Adapter A92111-xxx
82546 PRO/1000 MF Dual Port Server Adapter A91620-xxx
82546EB PRO/1000 MT Quad Port Server Adapter C11227-xxx
To verify your Intel adapter is supported, find the board ID number on the
adapter. Look for a label that has a barcode and a number in the format of
123456-001 (six digits hyphen three digits). Match this to the list of
numbers above.
For more information on how to identify your adapter, go to the Adapter &
Driver ID Guide at:
http://support.intel.com/support/network/adapter/pro100/21397.htm
For the latest Intel network drivers for FreeBSD, see:
http://appsr.intel.com/scripts-df/support_intel.asp
Building and Installation
=========================
NOTE: The driver can be installed as a dynamic loadable kernel module or
compiled into the kernel. You must have kernel sources installed in
order to compile the driver module.
In the instructions below, x.x.x is the driver version as indicated in the
name of the driver tar file.
1. Move the base driver tar file to the directory of your choice. For
example, use /home/username/em or /usr/local/src/em.
2. Untar/unzip the archive:
tar xvfz em-x.x.x.tar.gz
This will create an em-x.x.x directory.
3. To create a loadable module, perform the following steps.
NOTE: To compile the driver into the kernel, go directly to step 4.
a. To compile the module
cd em-x.x.x
make
b. To install the compiled module in system directory:
make install
c. If you want the driver to load automatically when the system is booted:
1. Follow steps a, and b above to compile and install the module
2. Edit /boot/loader.conf, and add the following line:
if_em_load="YES"
4. To compile the driver into the kernel:
cd em-x.x.x/src
cp if_em* /usr/src/sys/dev/em
cp Makefile.kernel /usr/src/sys/modules/em/Makefile
Edit the /usr/src/sys/conf/files.i386 file, and add the following lines:
dev/em/if_em.c optional em
dev/em/if_em_hw.c optional em
Remove the following lines from the /usr/src/sys/conf/files.i386 file,
if they exist:
dev/em/if_em_fxhw.c optional em
dev/em/if_em_phy.c optional em
Edit the kernel configuration file (i.e., GENERIC or MYKERNEL) in
/usr/src/sys/i386/conf, and ensure the following line is present:
device em
Compile and install the kernel. The system must be rebooted for the kernel
updates to take effect. For additional information on compiling the
kernel, consult the FreeBSD operating system documentation.
5. To assign an IP address to the interface, enter the following:
ifconfig em<interface_num> <IP_address>
6. Verify that the interface works. Enter the following, where <IP_address>
is the IP address for another machine on the same subnet as the interface
that is being tested:
ping <IP_address>
7. To configure the IP address to remain after reboot, edit /etc/rc.conf,
and create the appropriate ifconfig_em<interface_num><3E>entry:
ifconfig_em<interface_num>="<ifconfig_settings>"
Example usage:
ifconfig_em0="inet 192.168.10.1 netmask 255.255.255.0"
NOTE: For assistance, see the ifconfig man page.
Speed and Duplex Configuration
==============================
By default, the adapter auto-negotiates the speed and duplex of the
connection. If there is a specific need, the ifconfig utility can be used to
configure the speed and duplex settings on the adapter. Example usage:
ifconfig em<interface_num> <IP_address> media 100baseTX mediaopt
full-duplex
NOTE: Only use mediaopt to set the driver to full-duplex. If mediaopt is
not specified and you are not running at gigabit speed, the driver
defaults to half-duplex.
This driver supports the following media type options:
autoselect - Enables auto-negotiation for speed and duplex.
10baseT/UTP - Sets speed to 10 Mbps. Use the ifconfig mediaopt
option to select full-duplex mode.
100baseTX - Sets speed to 100 Mbps. Use the ifconfig mediaopt
option to select full-duplex mode.
1000baseTX - Sets speed to 1000 Mbps. In this case, the driver
supports only full-duplex mode.
1000baseSX - Sets speed to 1000 Mbps. In this case, the driver
supports only full-duplex mode.
For more information on the ifconfig utility, see the ifconfig man page.
Additional Configurations
=========================
The driver supports Transmit/Receive Checksum Offload and Jumbo Frames on
all but the 82542-based adapters. For specific adapters, refer to the
Supported Adapters section.
Jumbo Frames
------------
To enable Jumbo Frames, use the ifconfig utility to increase the MTU
beyond 1500 bytes.
NOTES: Only enable Jumbo Frames if your network infrastructure supports
them.
The Jumbo Frames setting on the switch must be set to at least
22 bytes larger than that of the adapter.
The Jumbo Frames MTU range for Intel Adapters is 1500 to 16114. The default
MTU range is 1500. To modify the setting, enter the following:
ifconfig em<interface_num> <hostname or IP address> mtu 9000
To confirm an interface's MTU value, use the ifconfig command. To confirm
the MTU used between two specific devices, use:
route get <destination_IP_address>
VLANs
-----
To create a new VLAN pseudo-interface:
ifconfig <vlan_name> create
To associate the VLAN pseudo-interface with a physical interface and
assign a VLAN ID, IP address, and netmask:
ifconfig <vlan_name> <ip_address> netmask <subnet_mask> vlan
<vlan_id> vlandev <physical_interface>
Example:
ifconfig vlan10 10.0.0.1 netmask 255.255.255.0 vlan10 vlandev em0
In this example, all packets will be marked on egress with 802.1Q VLAN
tags, specifying a VLAN ID of 10.
To remove a VLAN pseudo-interface:
ifconfig <vlan_name> destroy
Polling
-------
To enable polling in the driver, add the following options to the kernel
configuration, and then recompile the kernel:
options DEVICE_POLLING
options HZ=1000
At runtime, use the following command to turn on polling mode. Similarly,
turn off polling mode by setting the variable to 0:
sysctl kern.polling.enable=1
NOTES: DEVICE POLLING is only valid for non-SMP kernels.
The driver has to be built into the kernel for DEVICE POLLING to be
enabled in the driver.
Known Limitations
=================
There are known performance issues with this driver when running UDP traffic
with Jumbo Frames. Intel recommends not using Jumbo Frames for UDP traffic.
Support
=======
For general information and support, go to the Intel support website at:
http://support.intel.com
If an issue is identified with the released source code on the supported
kernel with a supported adapter, email the specific information related to
the issue to freebsdnic@mailbox.intel.com.
License
=======
This software program is released under the terms of a license agreement
between you ('Licensee') and Intel. Do not use or load this software or any
associated materials (collectively, the 'Software') until you have carefully
read the full terms and conditions of the LICENSE located in this software
package. By loading or using the Software, you agree to the terms of this
Agreement. If you do not agree with the terms of this Agreement, do not
install or use the Software.
* Other names and brands may be claimed as the property of others.
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