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tap: call skb_probe_transport_header after setting skb->dev
The BPF flow dissector expects either skb->sk or skb->dev set on all skbs. Delay flow dissection until after skb->dev is set. This requires calling from within an rcu read-side critical section. That is fine, see also the call from tun_xdp_one. Fixes: d0e13a1 ("flow_dissector: lookup netns by skb->sk if skb->dev is NULL") Reported-by: Christian Borntraeger <[email protected]> Signed-off-by: Willem de Bruijn <[email protected]> Signed-off-by: David S. Miller <[email protected]>
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