Re: [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.
From: Eric Dumazet <hidden>
Date: 2014-05-01 17:46:32
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.