linux-kernel - Re: [PATCH] firewire net: Ensure checksumming in upper layer.

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Message-ID: <50FC0A6C.205@gmail.com>
Date:	Sun, 20 Jan 2013 16:17:00 +0100
From:	Stephan Gatzka <stephan.gatzka@...il.com>
To:	YOSHIFUJI Hideaki <yoshfuji@...ux-ipv6.org>
CC:	Stefan Richter <stefanr@...6.in-berlin.de>,
	linux1394-devel@...ts.sourceforge.net, netdev@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] firewire net: Ensure checksumming in upper layer.


> "Off-link source" means the source exists on the different L2
> network.  In other words, source is connected via router(s).
>
>           ethernet             firewire
>   Host -------------- Router ------------ Host
>

O.k., understood. But the receiving router verifies the checksum of 
incoming packets and sends them on the firewire link. On firewire we 
have CRC checksums to ensure the integrity of packets.

I agree with your patch but I don't see why we should check them in the 
driver. I thought your patch will ensure that the checksums will be 
verified in the upper layers.

Stephan
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