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

[David Miller <davem@xxxxxxxxxxxxx>]

From: Ian Campbell <Ian.Campbell@xxxxxxxxxxxxx>
Date: Mon, 27 Jun 2011 15:42:04 +0100

> However it seems like this might still have a problem if your SKBs are
> ever cloned. What happens in this case, e.g if a user of AF_PACKET sends
> a broadcast via a device associated with a bridge[1] (where it would be
> flooded)?

You don't need a bridge to get a clone on transmit, the packet
scheduler can do clones.  Just grep for skb_clone in the packet
action handlers net/sched/act_*.c

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