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CDCEF(4) Device Drivers Manual CDCEF(4)

cdcefUSB Communication Device Class Ethernet function

cdcef* at usbf?

The cdcef driver implements the USB Communication Device Class (CDC) Ethernet Emulation Model (EEM) to provide support for USB Host-to-Host bridges.

The USB bridge appears as a regular network interface on both sides, transporting Ethernet frames.

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

arp(4), cdce(4), intro(4), netintro(4), usbf(4), hostname.if(5), ifconfig(8)

Universal Serial Bus Class Definitions for Communication Devices, http://www.usb.org/developers/devclass_docs/usbcdc11.pdf.

CDC Subclass Specification for Ethernet Emulation Model Devices, http://www.usb.org/developers/devclass_docs/CDC_EEM10.pdf.

The cdcef driver first appeared in OpenBSD 4.1.

The cdcef driver was written by Uwe Stuehler <‍uwe@openbsd.org> and Dale Rahn <‍drahn@openbsd.org>.

July 16, 2013 OpenBSD-6.0