NAME

igb —

Intel 1 GbE Server NIC Driver

SYNOPSIS

/dev/net/igb*

DESCRIPTION

The igb driver is a GLDv3 NIC driver for Intel 1 Gigabit Ethernet PCIe controllers which are built-in to motherboards and discrete PCIe devices.

The driver supports the following device families:

Intel 82575 Gigabit Ethernet Controller
Intel 82576 Gigabit Ethernet Controller
Intel 82580 Gigabit Ethernet Controller
Intel Ethernet Controller I210
Intel Ethernet Controller I211
Intel Ethernet Controller I350

Many other Intel 1 GbE devices are supported by the e1000g(7D) driver.

The driver supports the following functionality depending on the controller generation:

Jumbo frames up to 9000 bytes.
Checksum offload for TCP and UDP on IPv4 and IPv6. Checksum offload for IPv4 headers.
TCP Segmentation Offload (TSO) over IPv4 and IPv6
Support for multiple hardware rings, enabling receive-side steering (RSS) and multiple MAC address filters.
Promiscuous access via snoop(1M) and dlpi(7P)
LED control
Link auto-negotiation, manual link controls, and IEEE 802.3x flow control

APPLICATION PROGRAMMING INTERFACE

For each supported device instance, which corresponds to a port, a character-special file is created. This device can be used with the Data Link Provider Interface (DLPI) through either libdlpi(3LIB) or dlpi(7P).

Each instance is assigned a unique ascending integer identifier starting from zero. The first instance in the system would be enumerated with the id 0 and be named igb0 and be found in the file system at /dev/net/igb0.

CONFIGURATION

The igb driver supports operating at 1 Gbps full-duplex, 100 Mbps full and half-duplex, and 10 Mbps full and half-duplex. By default, the device will use auto-negotiation and prefer the highest compatible speed. The advertised speeds and broader configuration can be observed and modified with dladm(1M). While driver.conf(4) based configuration is possible, it is recommended that dladm(1M) is used wherever possible.

FILES