netdev - Re: [PATCH v2 net 1/1] r8169: fix offloaded tx checksum for small packets.

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Message-ID: <5197936C.6090607@googlemail.com>
Date:	Sat, 18 May 2013 16:42:52 +0200
From:	Holger Hoffstätte 
	<holger.hoffstaette@...glemail.com>
To:	Francois Romieu <romieu@...zoreil.com>
CC:	"David S. Miller" <davem@...emloft.net>, netdev@...r.kernel.org,
	Hayes Wang <hayeswang@...ltek.com>,
	Stefan Bader <stefan.bader@...onical.com>,
	Sergei Shtylyov <sergei.shtylyov@...entembedded.com>,
	Ben Hutchings <ben@...adent.org.uk>
Subject: Re: [PATCH v2 net 1/1] r8169: fix offloaded tx checksum for small
 packets.

On 18.05.2013 13:24, Francois Romieu wrote:
> 8168evl offloaded checksums are wrong since commit
> e5195c1f31f399289347e043d6abf3ffa80f0005 ("r8169: fix 8168evl frame padding.")
> pads small packets to 60 bytes (without ethernet checksum). Typical symptoms
> appear as UDP checksums which are wrong by the count of added bytes.
> 
> It isn't worth compensating. Let the driver checksum.
> 
> Due to the skb length changes, TSO code is moved before the Tx descriptor gets
> written.
> 
> Signed-off-by: Francois Romieu <romieu@...zoreil.com>

Tested again, still working for me.

Tested-by: Holger Hoffstätte <holger.hoffstaette@...glemail.com>

-h

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