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Re: [lwip-users] Incoming Frame Check Sequence
From: |
Jeff Barber |
Subject: |
Re: [lwip-users] Incoming Frame Check Sequence |
Date: |
Fri, 8 Oct 2010 10:57:56 -0400 |
The Ethernet FCS is only 4 bytes, so dropping an additional 4 bytes
(beyond the FCS) may well cause problems.
Jeff
On Fri, Oct 8, 2010 at 12:38 AM, Simon Goldschmidt <address@hidden> wrote:
>
> Joe Dupre <address@hidden> wrote:
>
>> My MAC does not drop the 8 byte FCS, leaving it in the DMA buffer for my
>> EMAC driver to deal with. Although the FCS is technically part of the
>> frame, is there any reason to pass it up the stack after the frame is CRC
>> validated?
> No. It should be dropped by the code, eventually. However, I'd strip it off
> first to prevent future code being confused by the extra bytes.
>>
>
> Simon
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