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Date:      Sat, 28 Apr 2001 10:40:35 +0200
From:      "Munish Chopra" <messiah_man@hotmail.com>
To:        grog@lemis.com
Cc:        freebsd-questions@freebsd.org
Subject:   Re: Realtek 8139 NIC and IRQ problem.
Message-ID:  <F59pD6xURPrSzppAdzA00007c67@hotmail.com>

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Bill did actually get documentation from RealTek (though he said it was 
pretty horrible). As for what issues the RealTek 8139 might have, who knows? 
I haven't really put mine through much rough testing on a LAN, but I have 
the chance today...

Cheers,
Munish


>From: Greg Lehey <grog@lemis.com>
>To: Munish Chopra <messiah_man@hotmail.com>
>CC: freebsd-questions@freebsd.org
>Subject: Re: Realtek 8139 NIC and IRQ problem.
>Date: Sat, 28 Apr 2001 11:36:39 +0930
>
>On Friday, 27 April 2001 at  8:55:52 +0200, Munish Chopra wrote:
> >> I wonder how good our RealTek driver is.
> >
> > It's written by Bill Paul, who is (as far is I know and have heard) 
>actually
> > more than 'just decent' at writing drivers. The driver seems to work 
>fine
> > too, but the card just screws things up every chance it gets.
>
>Bill's a good programmer, no doubt.  But he can't outguess the
>manufacturers if he doesn't get the documentation he needs.  For
>example, I had a case recently with an el cheapo card which had
>slightly different specs from others of its ilk:
>
>dc0: <Macronix 98715AEC-C 10/100BaseTX> port 0xc400-0xc4ff mem 
>0xeb000000-0xeb0000ff irq 3 at device 9.0 on pci0
>dc0: Ethernet address: 00:80:c6:f9:d3:fa
>
>The symptoms were that the card would appear to go to sleep, and you
>couldn't contact the machine.  If you were on the machine, however,
>things would work a while and then freeze up again.  It turned out
>that this card had a subtle difference in the multicast hash table: it
>was only 128 bits instead of 512.  This stopped it receiving broadcast
>messages, such as ARP requests.  Bill added a fix for it, and we have
>seen no problems since.  It's quite possible that the RealTek driver
>has similar issues.
>
>Greg


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