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CXGB(4)		       FreeBSD Kernel Interfaces Manual		       CXGB(4)

NAME
     cxgb -- Chelsio T3	10 Gigabit Ethernet adapter driver

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

	   device firmware
	   device cxgb

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

	   if_cxgb_load="YES"

DESCRIPTION
     The cxgb driver supports Transmit/Receive checksum	offload, Jumbo Frames,
     TCP segmentation offload (TSO), Large Receive Offload (LRO), VLAN hard-
     ware insertion / extraction, and VLAN checksum offload.  For further
     hardware information, see http://www.chelsio.com/.

     For questions related to hardware requirements, refer to the documenta-
     tion supplied with	your Chelsio T3	adapter.  All hardware requirements
     listed apply to use with FreeBSD.

     Support for Jumbo Frames is provided via the interface MTU	setting.
     Selecting an MTU larger than 1500 bytes with the ifconfig(8) utility con-
     figures the adapter to receive and	transmit Jumbo Frames.	The maximum
     MTU size for Jumbo	Frames is 9000.

     For more information on configuring this device, see ifconfig(8).

HARDWARE
     The cxgb driver supports 10 Gigabit and 1 Gigabit Ethernet	adapters based
     on	the T3 and T3B chipset:

     +o	 Chelsio 10GBase-CX4
     +o	 Chelsio 10GBase-LR
     +o	 Chelsio 10GBase-SR

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

DIAGNOSTICS
     cxgb%d: Unable to allocate	bus resource: memory  A	fatal initialization
     error has occurred.

     cxgb%d: Unable to allocate	bus resource: interrupt	 A fatal initializa-
     tion error	has occurred.

     cxgb%d: Could not find firmware image %s  The appropriate firmware	kld
     module was	not installed.	This is	a fatal	initialization error.

SUPPORT
     For general information and support, go to	the Chelsio support website
     at: http://www.chelsio.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 <support@chelsio.com>.

SEE ALSO
     altq(4), arp(4), netintro(4), ng_ether(4),	ifconfig(8)

HISTORY
     The cxgb device driver first appeared in FreeBSD 6.3 and FreeBSD 7.0.

AUTHORS
     The cxgb driver was written by Kip	Macy <kmacy@FreeBSD.org> with substan-
     tial support from Scott Long <scottl@FreeBSD.org>.

FreeBSD	10.1			March 14, 2007			  FreeBSD 10.1

NAME | SYNOPSIS | DESCRIPTION | HARDWARE | LOADER TUNABLES | DIAGNOSTICS | SUPPORT | SEE ALSO | HISTORY | AUTHORS

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