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.Dd February 7 2026
.Dt CNMAC 4 evbmips
.Os
.Sh NAME
.Nm cnmac
.Nd Cavium OCTEON gigabit Ethernet driver
.Sh SYNOPSIS
.Cd "cnmac* at octgmx?"
.Sh DESCRIPTION
The
.Nm
driver supports gigabit Ethernet interfaces on the Cavium OCTEON Plus CN50xx
and Cavium OCTEON III CN71xx systems.
.Pp
It presently provides IPv4/TCP/UDP checksumming on reception only.
It also supports VLAN-sized frames.
.Sh SEE ALSO
.Xr arp 4 ,
.Xr ifmedia 4 ,
.Xr netintro 4 ,
.Xr vlan 4 ,
.Xr ifconfig 8
.Sh HISTORY
The
.Nm
driver first appeared in
.Nx 8.0 .
.Sh AUTHORS
The
.Nm
driver was written
for
.Nx
by
.An Internet Initiative Japan Inc .