From: Laurent GONZALEZ <laurent.gonzalez@silicomp.fr>
To: ecos-discuss@sources.redhat.com
Subject: Re: [ECOS] Ethernet driver question
Date: Thu, 30 Oct 2003 07:54:00 -0000 [thread overview]
Message-ID: <20031030090031.2e3825f7.laurent.gonzalez@ri.silicomp.fr> (raw)
In-Reply-To: <3FA005C0.7070804@rawbw.com>
On Wed, 29 Oct 2003 10:24:00 -0800
John Newlin <jnewlin@rawbw.com> wrote:
> Couple of silly questions, I like multiple choice:
>
> 1) When the HDWR_Send function is called, is there:
> a) a valid FCS already at the end of the data?
> b) 4 bytes where the FCS should be, but expects the hardware to
> change
> it on the way out
> c) No FCS, expects the hardware to append an FCS
>
> (Our hardware can generate an FCS, so would save some cycles if the
> FCS were not generated in software)
>
> 2) When HDWR_recv is called to get a packet, does it expect a valid
> enet frame including MAC address, and FCS on the end, or does it want
> those stripped off? I imagine the former is correct, but I just want
> to make sure.
>
>
> Thanks,
>
> -John Newlin
>
>
hello,
AFAIK,
1) c) No FCS, expects the hardware to append an FCS
2) expect a valid enet frame including MAC address
any FCS computation are reserved for the hardware layer.
regards,
--
GONZALEZ Laurent
Silicomp Research Institute
Tel: 04 76 41 66 98
--
Before posting, please read the FAQ: http://sources.redhat.com/fom/ecos
and search the list archive: http://sources.redhat.com/ml/ecos-discuss
next prev parent reply other threads:[~2003-10-30 7:54 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-10-29 18:24 John Newlin
2003-10-30 7:54 ` Laurent GONZALEZ [this message]
2007-10-05 12:24 Gokoen
2007-10-08 8:30 ` Jürgen Lambrecht
2007-10-09 11:45 ` Gokoen
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