netdev - Re: eth0: hw csum failure

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Date:	Mon, 5 Dec 2011 08:17:41 -0800
From:	Stephen Hemminger <shemminger@...tta.com>
To:	Pavel Mateja <pavel@...safe.cz>
Cc:	netdev@...r.kernel.org
Subject: Re: eth0: hw csum failure


> If i did git bisect right it was caused by commit
> 4b275d7efa1c4412f0d572fcd7f78ed0919370b3
> bridge: Pseudo-header required for the checksum of ICMPv6
> 
> Problem disappears when I turn off HW checksum via ethtool.
> 
> Can anybody help?

Fixed in 3.1 (and queued for 3.0 stable).

commit fa2da8cdae1dd64f78fc915ca1d1a4a93c71e7cb
Author: stephen hemminger <shemminger@...tta.com>
Date:   Tue Nov 15 08:09:14 2011 +0000

    bridge: correct IPv6 checksum after pull
    
    Bridge multicast snooping of ICMPv6 would incorrectly report a checksum prob
    when used with Ethernet devices like sky2 that use CHECKSUM_COMPLETE.
    When bytes are removed from skb, the computed checksum needs to be adjusted.
    
    Signed-off-by: Stephen Hemminger <shemminger@...tta.com>
    Tested-by: Martin Volf <martin.volf.42@...il.com>
    Signed-off-by: David S. Miller <davem@...emloft.net>
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