netdev - Re: [UDP]: Clean up UDP-Lite receive checksum

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Message-Id: <20070306.203159.126762793.davem@davemloft.net>
Date:	Tue, 06 Mar 2007 20:31:59 -0800 (PST)
From:	David Miller <davem@...emloft.net>
To:	herbert@...dor.apana.org.au
Cc:	netdev@...r.kernel.org
Subject: Re: [UDP]: Clean up UDP-Lite receive checksum

From: Herbert Xu <herbert@...dor.apana.org.au>
Date: Tue, 6 Mar 2007 12:41:00 +1100

> Hi Dave:
> 
> [UDP]: Clean up UDP-Lite receive checksum
> 
> This patch eliminates some duplicate code for the verification of
> receive checksums between UDP-Lite and UDP.  It does this by
> introducing __skb_checksum_complete_head which is identical to
> __skb_checksum_complete_head apart from the fact that it takes
> a length parameter rather than computing the first skb->len bytes.
> 
> As a result UDP-Lite will be able to use hardware checksum offload
> for packets which do not use partial coverage checksums.  It also
> means that UDP-Lite loopback no longer does unnecessary checksum
> verification.
> 
> If any NICs start support UDP-Lite this would also start working
> automatically.
> 
> This patch removes the assumption that msg_flags has MSG_TRUNC clear
> upon entry in recvmsg.
> 
> Signed-off-by: Herbert Xu <herbert@...dor.apana.org.au>

Also applied, thanks a lot.
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