FreeBSD/Linux Kernel Cross Reference
sys/dev/em/

	Name	Size	Last modified (GMT)	Description
	Parent directory		2019-04-23 16:38:51
	README	7908 bytes	2019-04-23 16:38:48
	if_em.c	72128 bytes	2019-04-23 16:38:48
	if_em.h	11751 bytes	2019-04-23 16:38:49
	if_em_hw.c	129203 bytes	2019-04-23 16:38:48
	if_em_hw.h	80040 bytes	2019-04-23 16:38:48
	if_em_osdep.h	5266 bytes	2019-04-23 16:38:49

     $FreeBSD: releng/5.0/sys/dev/em/README 106649 2002-11-08 18:14:17Z pdeuskar $
     FreeBSD* Driver for the Intel(R) PRO/1000 Family of Adapters
     ============================================================
     
     September 11, 2002
     
     
     Contents
     ========
    
    - In This Release
    - Supported Adapters
    - Building and Installation
    - Speed and Duplex Configuration
    - Additional Configurations
    - Known Limitations
    - Support
    - License
    
    
    In This Release
    ===============
    
    This file describes the FreeBSD* driver, version 1.4.x, for the Intel(R)
    PRO/1000 Family of Adapters. This driver has been developed for use with 
    FreeBSD, version 4.6. As a new feature for this release, the driver is now 
    compiled by default into the FreeBSD 4.6 kernel.
    
    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 below.
    
    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          A78708-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
    
    
    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: 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.
    
    
    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 xfz em-x.x.x.tar.gz
   
   3. To load the driver onto a running system:
   
           cd em-x.x.x/modules
           kldload ./if_em.ko
   
   4. To assign an IP address to the interface, enter the following:
   
           ifconfig em<interface_num> <IP_address>
   
   5. 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>
   
   6. If you want the driver to load automatically when the system is booted:
   
           cd em-x.x.x/modules
           cp if_em.ko /modules
           
      Edit /boot/loader.conf, and add the following line:
           
                if_em_load="YES"
   
                  OR
   
           compile the driver into the kernel (see item 7).
   
   
      Edit /etc/rc.conf, and create the appropriate ifconfig_em<interface_num> 
      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.
   
   7. If you want to compile the driver into the kernel, enter:
   
           cd em-x.x.x/src
           cp if_em* /usr/src/sys/dev/em   
           cp Makefile /usr/src/sys/modules/em
   
      Edit the /usr/src/sys/conf/files.i386 file, and add the following line:
   
           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_fx_hw.c optional em
           /dev/em/if_em_phy.c optional em
   
      Compile and install the kernel.
   
   
   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
   =========================
   
     Jumbo Frames
     ------------
   
     To enable Jumbo Frames, use the ifconfig utility to increase the MTU 
     beyond 1500 bytes. 
   
     NOTE: Only enable Jumbo Frames if your network infrastructure supports 
           them.
   
     The MTU range for Jumbo Frames is 1500 to 16114. For example, enter the 
     following:
   
           ifconfig em<interface_num> mtu 9000
   
     VLANs
     -----
   
     To enable VLANs in the kernel, modify the config file as follows:
   
           pseudo-device  vlan <num_VLANs>
   
     Then, recompile the kernel and reboot.
   
     To see the VLAN device entries, use ifconfig.
   
     To attach a VLAN to the driver enter the following:
   
           ifconfig vlan0 inet 10.0.0.1 netmask 255.255.255.0 vlan 1 vlandev 
                em0 mtu 1500 up
   
     Also, bring the driver up by entering:
   
           ifconfig em0 up
   
   
   Known Limitations
   =================
    
   There are known performance problems 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.