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nfe.4freebsd

Langue: en

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Version: 326845 (ubuntu - 08/07/09)

Section: 4 (Pilotes et protocoles réseau)


BSD mandoc

NAME

nfe - NVIDIA nForce MCP Ethernet driver

SYNOPSIS

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

Alternatively, to load the driver as a module at boot time, place the following line in loader.conf5:

 if_nfe_load="YES"
 

DESCRIPTION

The driver supports PCI Ethernet adapters based on the NVIDIA nForce Media and Communications Processors (MCP), such as the nForce, nForce 2, nForce 3, CK804, MCP04, MCP51, MCP55, MCP61, MCP65, MCP67 and MCP73 Ethernet controller chips.

Supported features include (hardware support provided):

Support for Jumbo Frames is provided 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 driver supports the following media types:

autoselect
Enable autoselection of the media type and options.
10baseT/UTP
Set 10Mbps operation.
100baseTX
Set 100Mbps (Fast Ethernet) operation.
1000baseT
Set 1000Mbps (Gigabit Ethernet) operation (recent models only).

The driver supports the following media options:

half-duplex
Force half duplex operation.
full-duplex
Force full duplex operation.

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

HARDWARE

The driver supports the following NVIDIA MCP onboard adapters:

LOADER TUNABLES

Tunables can be set at the loader(8) prompt before booting the kernel or stored in loader.conf5.
hw.nfe.msi_disable
Whether or not MSI support is enabled in the driver. The default value is 0.
hw.nfe.msix_disable
Whether or not MSI-X support is enabled in the driver. The default value is 0.

SYSCTL VARIABLES

The following sysctl(8) variables can be used to modify or monitor behavior.
dev.nfe.%d.process_limit
Maximum number of Rx events to be processed in the event loop before rescheduling a taskqueue. The accepted range is 50 to 255, the default value is 192. The interface does not need to be brought down and up again before a change takes effect.

SEE ALSO

altq(4), arp(4), intro(4), miibus(4), netintro(4), pci(4), polling(4), sysctl(8), ifconfig(8)

HISTORY

The device driver first appeared in Ox 3.9 , and then in Fx 7.0 .

AUTHORS

An -nosplit The driver was written by An Jonathan Gray Aq jsg@openbsd.org and An Damien Bergamini Aq damien@openbsd.org . The driver was ported to Fx by An Shigeaki Tagashira Aq shigeaki@se.hiroshima-u.ac.jp .
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