CNMAC(4)

NAME
cnmac - Cavium OCTEON built-in Ethernet device

SYNOPSIS
cnmac* at octgmx?

DESCRIPTION
The cnmac driver supports built-in Ethernet ports on Cavium OCTEON CN30xx, Cavium OCTEON Plus CN50xx, Cavium OCTEON II CN61xx, and Cavium OCTEON III CN71xx system on chips. Among the routers based on these chips are the following:

D-Link DSR-500
Netgear ProSecure UTM25
Portwell CAM-0100
Rhino Labs Inc. SDNA Shasta
Rhino Labs Inc. SDNA-7130
Ubiquiti Networks EdgeRouter
Ubiquiti Networks EdgeRouter 4
Ubiquiti Networks EdgeRouter 6
Ubiquiti Networks EdgeRouter LITE
Ubiquiti Networks EdgeRouter PoE
Ubiquiti Networks EdgeRouter PRO
Ubiquiti Networks UniFi Security Gateway
Ubiquiti Networks UniFi Security Gateway PRO-4

The cnmac driver supports TCP/UDP checksum offload on IPv4/IPv6 reception and transmission, and IPv4 checksum offload on reception. The driver additionally supports jumbo frames.

SEE ALSO
arp(4), ifmedia(4), intro(4), netintro(4), octgmx(4), hostname.if(5), ifconfig(8)

HISTORY
The cnmac driver first appeared in OpenBSD 5.4.

AUTHORS
-nosplit The cnmac driver was written by Internet Initiative Japan Inc.