IntelMausi - Intel onboard LAN driver for macOS

[MaLd0n]

Intel onboard LAN driver for macOS. Courtesy of Laura Müller. This copy includes alterations that are of concern in Acidanthera as well as kernel debugging support initially provided by aerror2 in IntelMausiEthernetWithKernelDebugger repository. Do use the original version when uncertain. No support or troubleshooting provided.

Wake on LAN functionality should work out of the box. On misconfigured hardware one may try to force-enable it by injecting mausi-force-wol device property (with any value, recommended), or -mausiwol boot argument (for testing purposes).

Link HERE

A few days before Christmas I started my latest project, a new driver for recent Intel onboard LAN controllers. My intention was not to replace hnak's AppleIntelE1000e.kext completely but to deliver best performance and stability on recent hardware. That's why I dropped support for a number of older NICs. Currently the driver supports:

5 Series

82578LM

82578LC

82578DM

82578DC

6 and 7 Series

82579LM

82579V

8 and 9 Series

I217LM

I217V

I218LM

I218V

I218LM2

I218V2

I218LM3

100 Series

I219V

I219LM

I219V2

I219LM2

I219LM3

200 Series

I219LM

I219V

300 Series

I219LM

I219V

Key Features of the Driver

Support for multisegment packets relieving the network stack of unnecessary copy operations when assembling packets for transmission.

No-copy receive and transmit. Only small packets are copied on reception because creating a copy is more efficient than allocating a new buffer.

TCP, UDP and IPv4 checksum offload (receive and transmit).

Support for TCP/IPv6 and UDP/IPv6 checksum offload.

Makes use of the chip's TCP Segmentation Offload (TSO) feature with IPv4 and IPv6 in order to reduce CPU load while sending large amounts of data (disabled due to hardware bugs).

Fully optimized for Mavericks or newer (64-bit architecture).

Support for Energy Efficient Ethernet (EEE).

VLAN support is implemented but untested as I have no need for it.

The driver is published under GPLv2.