FreeBSD/Linux Kernel Cross Reference
sys/modules/if_ef/ef.4

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    .\" $FreeBSD$
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    .Dd June 20, 1999
    .Dt EF 4
    .Os
    .Sh NAME
    .Nm ef
    .Nd "pseudo-device driver providing support for multiple ethernet frame types"
    .Sh SYNOPSIS
    .Cd "pseudo-device ef"
    .Sh DESCRIPTION
    The
    .Nm
    pseudo-device driver clones each ethernet type device with four
    additional interfaces. Each of them capable to send or receive only
    one predefined frame type.
    .Pp
    Names for the new interfaces created by adding
    .Ar fN
    suffix to an existing device name. Where
    .Ar N
    is a device unit which can have one of the following values:
    .Bd -literal -offset indent
    0     interface with an Ethernet_II frame
    1     interface with a Novell Ethernet_802.3 frame
    2     interface with an Ethernet_802.2 frame
    3     interface with an Ethernet_802.2/SNAP frame support.
    .Ed
    .Pp
    For example, device
    .Ar ed0
    will be populated with four devices:
    .Ar ed0f0 ,
    .Ar ed0f1 ,
    .Ar ed0f2
    and
    .Ar ed0f3 .
    .Pp
    After that, each device can be configured as usually:
    .Dl # ifconfig ed0f1 ipx 0x105
    This will configure IPX protocol with network number
    .Ar 0x105
    and
    .Ar Ethernet_802.3
    frame type.
    .Pp
    Please note that it is impossible to configure IPX protocol on the 'raw'
    .Ar ed0
    device after
    .Ar if_ef.ko
    driver loaded.
    .Sh EXAMPLES
    The
    .Nm
    driver can be loaded via
    .Xr loader.conf 5
    file:
    .Dl if_ef_load="YES"
    .Pp
    In this case an ordinary interface configuration commands can be used
    in the
    .Xr rc.conf 5
    file:
    .Dl network_interfaces="ed2 lo0 tun0 ed2f0 ed2f1"
    .Dl ifconfig_ed2f0_ipx="ipx 0x101"
    .Dl ifconfig_ed2f1_ipx="ipx 0x102"
    .Sh DIAGNOSTICS
    None.
    .Sh CAVEATS
    Avoid to configuring 'raw' ethernet device for IPX protocol after
    .Nm
    driver is loaded.
    .Sh SEE ALSO
    .Xr ipx 3 ,
   .Xr ifconfig 8
   .Sh AUTHORS
   .An Boris Popov Aq bp@FreeBSD.org .

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