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    The following form allows you to view linux man pages.

    Command:

    jme

    
         kernel configuration file:
    
               device miibus
               device jme
    
         Alternatively, to load the driver as a module at boot time, place the
         following line in loader.conf(5):
    
               if_jme_load="YES"
    
    
    

    DESCRIPTION

         The jme device driver provides support for JMicron JMC250 PCI Express
         Gigabit Ethernet controllers and JMicron JMC260 PCI Express Fast Ethernet
         controllers.
    
         All LOMs supported by the jme driver have TCP/UDP/IP checksum offload for
         both transmit and receive, TCP segmentation offload (TSO), hardware VLAN
         tag stripping/insertion features, Wake On Lan (WOL) and an interrupt coa-
         lescing/moderation mechanism as well as a 64-bit multicast hash filter.
    
         The JMC250 also supports Jumbo Frames (up to 9216 bytes), which can be
         configured via the interface MTU setting.  Selecting an MTU larger than
         1500 bytes with the ifconfig(8) utility configures the adapter to receive
         and transmit Jumbo Frames.
    
         The jme driver supports the following media types:
    
         autoselect   Enable autoselection of the media type and options.  The
                      user can manually override the autoselected mode by adding
                      media options to rc.conf(5).
    
         10baseT/UTP  Set 10Mbps operation.
    
         100baseTX    Set 100Mbps (Fast Ethernet) operation.
    
         1000baseTX   Set 1000baseTX operation over twisted pair.
    
         The jme driver supports the following media options:
    
         full-duplex  Force full duplex operation.
    
         half-duplex  Force half duplex operation.
    
         For more information on configuring this device, see ifconfig(8).
    
    
    

    HARDWARE

         The jme device driver provides support for the following Ethernet con-
         trollers:
    
         ?   JMicron JMC250 PCI Express Gigabit Ethernet controller
         ?   JMicron JMC260 PCI Express Fast Ethernet controller
    
         loader(8) tunables:
    
         dev.jme.%d.tx_coal_to
                 Maximum amount of time to delay for Tx completion interrupt in
                 units of 1us.  The accepted range is 1 to 65535, the default is
                 100 (100us).
    
         dev.jme.%d.tx_coal_pkt
                 Maximum number of packets to fire Tx completion interrupt.  The
                 accepted range is 1 to 255, the default is 8.
    
         dev.jme.%d.rx_coal_to
                 Maximum amount of time to delay for Rx completion interrupt in
                 units of 1us.  The accepted range is 1 to 65535, the default is
                 100 (100us).
    
         dev.jme.%d.rx_coal_pkt
                 Maximum number of packets to fire Rx completion interrupt.  The
                 accepted range is 1 to 255, the default is 2.
    
         dev.jme.%d.process_limit
                 Maximum amount of Rx events to be processed in the event loop
                 before rescheduling a taskqueue.  The accepted range is 10 to
                 255, the default value is 128 events.  The interface does not
                 need to be brought down and up again before a change takes
                 effect.
    
    
    

    SEE ALSO

         altq(4), arp(4), miibus(4), netintro(4), ng_ether(4), vlan(4),
         ifconfig(8)
    
    
    

    HISTORY

         The jme driver was written by Pyun YongHyeon <yongari@FreeBSD.org>.  It
         first appeared in FreeBSD 7.1.
    
    
    

    BSD October 6, 2008 BSD

    
    
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