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    The following form allows you to view linux man pages.

    Command:

    sf

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

    DESCRIPTION

         The sf driver provides support for Adaptec Duralink Fast Ethernet
         adapters based on the Adaptec AIC-6915 "Starfire" chipset.
    
         The AIC-6915 is a bus master controller with an MII interface.  It sup-
         ports high and low priority transmit and receive queues, TCP/IP checksum
         offload, multiple DMA descriptor formats and both polling and pro-
         ducer/consumer DMA models.  The AIC-6915 receive filtering options
         include a 16 entry perfect filter, a 512-bit hash table for multicast
         addresses, a 512-bit hash table for priority address matching and VLAN
         filtering.  An external MII-compliant transceiver is required for media
         interfacing.
    
         Multiport adapters consist of several AIC-6915 controllers connected via
         a PCI to PCI bridge.  Each controller is treated as a separate interface
         by the sf driver.
    
         The sf 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 the /etc/rc.conf
                               file.
    
         10baseT/UTP           Set 10Mbps operation.  The mediaopt option can also
                               be used to select either full-duplex or half-duplex
                               modes.
    
         100baseTX             Set 100Mbps (Fast Ethernet) operation.  The
                               mediaopt option can also be used to select either
                               full-duplex or half-duplex modes.
    
         The sf 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

         Adapters supported by the sf driver include:
                 (102.4us).  Value 0 completely disables the interrupt moderation.
                 The interface does not need to be brought down and up again
                 before a change takes effect.
    
         dev.sf.%d.stats
                 Display lots of useful MAC counters maintained in the driver.
    
    
    

    DIAGNOSTICS

         sf%d: couldn't map memory  A fatal initialization error has occurred.
         This may happen if the PCI BIOS not configured the device, which may be
         because the BIOS has been configured for a "Plug and Play" operating sys-
         tem.  The "Plug and Play OS" setting in the BIOS should be set to "no" or
         "off" in order for PCI devices to work properly with FreeBSD.
    
         sf%d: couldn't map ports  A fatal initialization error has occurred.
         This may happen if the PCI BIOS not configured the device, which may be
         because the BIOS has been configured for a "Plug and Play" operating sys-
         tem.  The "Plug and Play OS" setting in the BIOS should be set to "no" or
         "off" in order for PCI devices to work properly with FreeBSD.
    
         sf%d: couldn't map interrupt  A fatal initialization error has occurred.
    
         sf%d: no memory for softc struct!  The driver failed to allocate memory
         for per-device instance information during initialization.
    
         sf%d: failed to enable I/O ports/memory mapping!  The driver failed to
         initialize PCI I/O port or shared memory access.  This might happen if
         the card is not in a bus-master slot.
    
         sf%d: watchdog timeout  The device has stopped responding to the network,
         or there is a problem with the network connection (cable).
    
    
    

    SEE ALSO

         altq(4), arp(4), miibus(4), netintro(4), ng_ether(4), polling(4),
         vlan(4), ifconfig(8)
    
         The Adaptec AIC-6915 Programmer's Manual,
         http://download.adaptec.com/pdfs/user_guides/aic6915_pg.pdf.
    
    
    

    HISTORY

         The sf device driver first appeared in FreeBSD 3.0.
    
    
    

    AUTHORS

         The sf driver was written by Bill Paul <wpaul@ctr.columbia.edu>.
    
    
    

    BSD January 21, 2008 BSD

    
    
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