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From: Warner Losh <imp@FreeBSD.org>
Date: Tue, 6 Sep 2005 22:55:32 +0000 (UTC)
To: src-committers@FreeBSD.org, cvs-src@FreeBSD.org, cvs-all@FreeBSD.org
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Cc: 
Subject: cvs commit: src/sys/dev/ed if_ed_pccard.c
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imp         2005-09-06 22:55:32 UTC

  FreeBSD src repository

  Modified files:
    sys/dev/ed           if_ed_pccard.c 
  Log:
  Work around a bug I've seen on Linksys EC2T cards.  For some reason,
  as yet unknown, those cards report their MAC address a byte at a time.
  However, other AX88x90 cards report the MAC address a word at a time.
  Add a heuristic which looks at the high order bytes of the first 6
  words.  If they are all '0', assume the card is behaving like the
  Linksys EC2T card.  Since the default prefix for these cards appears
  to be 00:e0:98, this appears to be a safe heuristic.  While some cards
  have been observed with different prefixes, they all work with this
  heuristic.
  
  I'm unsure if this is a bug in the EC2T card, or if it is a bug in the
  initialization of the card.  No other OS has this heuristic (although
  w/o it, the MAC address that is used works).
  
  Revision  Changes    Path
  1.90      +25 -2     src/sys/dev/ed/if_ed_pccard.c