Thread (7 messages) 7 messages, 3 authors, 2008-05-29

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

From: Rusty Russell <hidden>
Date: 2008-05-29 07:33:52

On Tuesday 27 May 2008 21:20:47 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().
As should the rx_bytes += skb->len.  Thanks for this!

Applied (and 1/3, the typo patch).

I'll backport this to -stable, as well.

Thanks,
Rusty.
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