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Re: [Xen-devel] [3.15-rc3] Bisected: xen-netback mangles packets between two guests on a bridge since merge of "TX grant mapping with SKBTX_DEV_ZEROCOPY instead of copy" series.
On Thu, 2014-05-01 at 19:39 +0200, Sander Eikelenboom wrote:
> Will run that for both the cases:
> skb->truesize -= skb->data_len;
> skb->truesize -= nskb->data_len;
>
> Let's see what that does different and if that gives an insight in what is
> going
> wrong.
Playing with skb->truesize only makes TCP stack reacts faster to bloat,
calling tcp collapse to save memory.
So you might prevent the bug from happening, not really fix root cause.
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