Re: [PATCH 3/3] virtio_net: Fix skb->csum_start computation

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On Tue, May 27, 2008 at 12:20:47PM +0100, Mark McLoughlin wrote:
> hdr->csum_start is the offset from the start of the ethernet
> header to the transport layer checksum field. skb->csum_start
> is the offset from skb->head.
> 
> skb_partial_csum_set() assumes that skb->data points to the
> ethernet header - i.e. it computes skb->csum_start by adding
> the headroom to hdr->csum_start.
> 
> Since eth_type_trans() skb_pull()s the ethernet header,
> skb_partial_csum_set() should be called before
> eth_type_trans().
> 
> Signed-off-by: Mark McLoughlin <markmc@xxxxxxxxxx>

Good catch! Clearly shows I never ran this across a real Ethernet
device :)

Acked-by: Herbert Xu <herbert@xxxxxxxxxxxxxxxxxxx>

Thanks,
-- 
Visit Openswan at http://www.openswan.org/
Email: Herbert Xu ~{PmV>HI~} <herbert@xxxxxxxxxxxxxxxxxxx>
Home Page: http://gondor.apana.org.au/~herbert/
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