Re: Ethernet Error Correction

Ben Greear (greearb@candelatech.com)
Tue, 25 Sep 2001 14:19:04 -0700

"Richard B. Johnson" wrote:
>
> On Tue, 25 Sep 2001, Karel Kulhavy wrote:
>
> > What about implementing an Ethernet error correction in Linux kernel?
> >
>
> Ethernet uses hardware error detection. Only good packets get through.
> Therefore there is nothing that a driver in the kernel could do to
> recover an otherwise errored packet because the packet doesn't exist.
>

That's probably the default of most chipsets, but I wonder if you could
tell it to send the busted packets up the stack anyway. Then, the driver
could make the decision in software whether or not to correct/foward, or
discard the packet... I assume that in order to detect a CRC error,
the NIC already has the packet in it's buffers somewhere...

-- 
Ben Greear <greearb@candelatech.com>          <Ben_Greear@excite.com>
President of Candela Technologies Inc      http://www.candelatech.com
ScryMUD:  http://scry.wanfear.com     http://scry.wanfear.com/~greear
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