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NAME

       msk — Marvell/SysKonnect Yukon II Gigabit Ethernet adapter driver

SYNOPSIS

       To compile this driver into the kernel, place the following lines in your kernel configuration file:

             device miibus
             device msk

       Alternatively, to load the driver as a module at boot time, place the following line in loader.conf(5):

             if_msk_load="YES"

DESCRIPTION

       The  msk device driver provides support for various NICs based on the Marvell/SysKonnect Yukon II Gigabit
       Ethernet controller chip.

       All NICs supported by the msk driver have TCP/UDP/IP checksum  offload  for  transmit,  TCP  segmentation
       offload  (TSO),  hardware  VLAN tag stripping/insertion features and an interrupt moderation mechanism as
       well as a 64-bit multicast hash filter.   The  Yukon  II  supports  TBI  (ten  bit  interface)  and  GMII
       transceivers, which means it can be used with either copper or 1000baseX fiber applications.

       The Yukon II also supports Jumbo Frames (up to 9022 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 msk 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.   The  ifconfig(8) mediaopt option can also be used to select either
                    full-duplex or half-duplex modes.

       100baseTX    Set 100Mbps (Fast Ethernet) operation.  The ifconfig(8) mediaopt option can also be used  to
                    select either full-duplex or half-duplex modes.

       1000baseTX   Set  1000baseTX  operation  over  twisted pair.  The ifconfig(8) mediaopt option can also be
                    used to select either full-duplex or half-duplex modes.

       1000baseSX   Set 1000Mbps (Gigabit Ethernet) operation.   Both  full-duplex  and  half-duplex  modes  are
                    supported.

       The msk 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  msk  driver provides support for various NICs based on the Marvell/SysKonnect Yukon II based Gigabit
       Ethernet controller chips, including:

          D-Link 550SX Gigabit Ethernet
          D-Link 560SX Gigabit Ethernet
          D-Link 560T Gigabit Ethernet
          Marvell Yukon 88E8021CU Gigabit Ethernet
          Marvell Yukon 88E8021 SX/LX Gigabit Ethernet
          Marvell Yukon 88E8022CU Gigabit Ethernet
          Marvell Yukon 88E8022 SX/LX Gigabit Ethernet
          Marvell Yukon 88E8061CU Gigabit Ethernet
          Marvell Yukon 88E8061 SX/LX Gigabit Ethernet
          Marvell Yukon 88E8062CU Gigabit Ethernet
          Marvell Yukon 88E8062 SX/LX Gigabit Ethernet
          Marvell Yukon 88E8035 Fast Ethernet
          Marvell Yukon 88E8036 Fast Ethernet
          Marvell Yukon 88E8038 Fast Ethernet
          Marvell Yukon 88E8039 Fast Ethernet
          Marvell Yukon 88E8040 Fast Ethernet
          Marvell Yukon 88E8040T Fast Ethernet
          Marvell Yukon 88E8042 Fast Ethernet
          Marvell Yukon 88E8048 Fast Ethernet
          Marvell Yukon 88E8050 Gigabit Ethernet
          Marvell Yukon 88E8052 Gigabit Ethernet
          Marvell Yukon 88E8053 Gigabit Ethernet
          Marvell Yukon 88E8055 Gigabit Ethernet
          Marvell Yukon 88E8056 Gigabit Ethernet
          Marvell Yukon 88E8057 Gigabit Ethernet
          Marvell Yukon 88E8058 Gigabit Ethernet
          Marvell Yukon 88E8059 Gigabit Ethernet
          Marvell Yukon 88E8070 Gigabit Ethernet
          Marvell Yukon 88E8071 Gigabit Ethernet
          Marvell Yukon 88E8072 Gigabit Ethernet
          Marvell Yukon 88E8075 Gigabit Ethernet
          SysKonnect SK-9Sxx Gigabit Ethernet
          SysKonnect SK-9Exx Gigabit Ethernet

LOADER TUNABLES

       Tunables can be set at the loader(8) prompt before booting the kernel or stored in loader.conf(5).

       hw.msk.msi_disable
               This tunable disables MSI support on the Ethernet hardware.  The default value is 0.

SYSCTL VARIABLES

       The following variables are available as both sysctl(8) variables and loader(8) tunables:

       dev.mskc.%d.int_holdoff
               Maximum number of time to delay interrupts.  The valid range is 0 to 34359738 for 125MHz clock in
               units of 1us, the default is 100 (100us).  The interface need to be brought  down  and  up  again
               before a change takes effect.

       dev.mskc.%d.process_limit
               Maximum  amount  of  Rx events to be processed in the event loop before rescheduling a taskqueue.
               The accepted range is 30 to 256, 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 msk driver was written by Pyun YongHyeon <yongari@FreeBSD.org> and it is based on sk(4) and Marvell's
       FreeBSD driver.  It first appeared in FreeBSD 7.0 and FreeBSD 6.3.

Debian                                            May 23, 2011                                            MSK(4)