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$FreeBSD: releng/11.0/share/man/man4/cxgb.4 267938 2014-06-26 21:46:14Z bapt $
.Dd March 14, 2007 .Dt CXGB 4 .Os .Sh NAME .Nm cxgb .Nd "Chelsio T3 10 Gigabit Ethernet adapter driver" .Sh SYNOPSIS To compile this driver into the kernel, place the following lines in your kernel configuration file: d -ragged -offset indent .Cd "device firmware" .Cd "device cxgb" .Ed
p To load the driver as a module at boot time, place the following line in .Xr loader.conf 5 : d -literal -offset indent if_cxgb_load="YES" .Ed .Sh DESCRIPTION The .Nm driver supports Transmit/Receive checksum offload, Jumbo Frames, TCP segmentation offload (TSO), Large Receive Offload (LRO), VLAN hardware insertion / extraction, and VLAN checksum offload. For further hardware information, see
a http://www.chelsio.com/ .
p For questions related to hardware requirements, refer to the documentation supplied with your Chelsio T3 adapter. All hardware requirements listed apply to use with .Fx .
p Support for Jumbo Frames is provided via the interface MTU setting. Selecting an MTU larger than 1500 bytes with the .Xr ifconfig 8 utility configures the adapter to receive and transmit Jumbo Frames. The maximum MTU size for Jumbo Frames is 9000.
p For more information on configuring this device, see .Xr ifconfig 8 . .Sh HARDWARE The .Nm driver supports 10 Gigabit and 1 Gigabit Ethernet adapters based on the T3 and T3B chipset:
p l -bullet -compact t Chelsio 10GBase-CX4 t Chelsio 10GBase-LR t Chelsio 10GBase-SR .El .Sh LOADER TUNABLES Tunables can be set at the .Xr loader 8 prompt before booting the kernel or stored in .Xr loader.conf 5 . .Sh DIAGNOSTICS l -diag t "cxgb%d: Unable to allocate bus resource: memory" A fatal initialization error has occurred. t "cxgb%d: Unable to allocate bus resource: interrupt" A fatal initialization error has occurred. t "cxgb%d: Could not find firmware image %s" The appropriate firmware kld module was not installed. This is a fatal initialization error. .El .Sh SUPPORT For general information and support, go to the Chelsio support website at:
a http://www.chelsio.com/ .
p 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 .Aq Mt support@chelsio.com . .Sh SEE ALSO .Xr altq 4 , .Xr arp 4 , .Xr netintro 4 , .Xr ng_ether 4 , .Xr ifconfig 8 .Sh HISTORY The .Nm device driver first appeared in .Fx 6.3 and .Fx 7.0 . .Sh AUTHORS .An -nosplit The .Nm driver was written by .An Kip Macy Aq Mt kmacy@FreeBSD.org with substantial support from .An Scott Long Aq Mt scottl@FreeBSD.org .