Document MAC address selection and setting for atse(4).
Submitted by: brooks MFC after: 3 days Sponsored by: DARPA/AFRL
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.\"-
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.\" Copyright (c) 2013 SRI International
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.\" Copyright (c) 2013-2014 SRI International
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.\" All rights reserved.
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.\"
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.\" This software was developed by SRI International and the University of
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@ -29,7 +29,7 @@
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.\"
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.\" $FreeBSD$
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.\"
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.Dd October 18, 2013
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.Dd May 21, 2014
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.Dt ALTERA_ATSE 4
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.Os
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.Sh NAME
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@ -66,6 +66,25 @@ The current version of the
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.Nm
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driver supports the Ethernet MegaCore as described in version 11.1 of
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Altera's documentation when the device is configured with internal FIFOs.
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.Sh MAC SELECTION
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The default MAC address for each
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.Nm
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interface is derived from a value stored in
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.Xr cfi 4
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flash.
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The value is managed by the
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.Xr atsectl 8
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utility.
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.Pp
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Only a single MAC address may be stored in flash.
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If the address begins with the Altera prefix 00:07:ed and ends in 00 then
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up to 16 addresses will be derived from it by adding the unit number of
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the interface to the stored address.
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For other prefixes, the address will be assigned to atse0 and random
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addresses will be used for other interfaces.
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If the stored address is invalid, for example all zero's, multicast, or the
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default address shipped on all DE4 boards (00:07:ed:ff:ed:15) then a random
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address is generated when the device is attached.
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.Sh SEE ALSO
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.Xr miibus 4 ,
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.Xr netintro 4 ,
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