[Xen-devel] Re: SKB paged fragment lifecycle on receive

To:	David Miller <davem@xxxxxxxxxxxxx>
Subject:	[Xen-devel] Re: SKB paged fragment lifecycle on receive
From:	Jeremy Fitzhardinge <jeremy@xxxxxxxx>
Date:	Fri, 24 Jun 2011 13:11:59 -0700
Cc:	netdev@xxxxxxxxxxxxxxx, rusty@xxxxxxxxxxxxxxx, xen-devel@xxxxxxxxxxxxxxxxxxx, Ian.Campbell@xxxxxxxxxx, eric.dumazet@xxxxxxxxx
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On 06/24/2011 12:46 PM, David Miller wrote:
> Pages get transferred between different SKBs all the time.
>
> For example, GRO makes extensive use of this technique.
> See net/core/skbuff.c:skb_gro_receive().
>
> It is just one example.

I see, and the new skb doesn't get a destructor copied from the
original, so there'd be no second callback.

Are the pages still attached to the first skb, or are they transferred
completely?

Thanks,
    J

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[Xen-devel] Re: SKB paged fragment lifecycle on receive