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MSK(4)		       FreeBSD Kernel Interfaces Manual			MSK(4)

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 Mar-
     vell/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 strip-
     ping/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 Mar-
     vell/SysKonnect Yukon II based Gigabit Ethernet controller	chips, includ-
     ing:

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

FreeBSD	9.3			 May 23, 2011			   FreeBSD 9.3

NAME | SYNOPSIS | DESCRIPTION | HARDWARE | LOADER TUNABLES | SYSCTL VARIABLES | SEE ALSO | HISTORY

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