tree 3d3a2f97da69a5681a83cebf46e816e40670e34b
parent 45acd3a0a18c5692b34ee9091858c6f6c7b5d4a8
author Eric Dumazet <edumazet@google.com> 1359597104 -0800
committer David S. Miller <davem@davemloft.net> 1359603514 -0500

x86: bpf_jit_comp: add pkt_type support

Supporting access to skb->pkt_type is a bit tricky if we want
to have a generic code, allowing pkt_type to be moved in struct sk_buff

pkt_type is a bit field, so compiler cannot really help us to find
its offset. Let's use a helper for this : It will throw a one time
message if pkt_type no longer starts at a byte boundary or is
no longer a 3bit field.

Reported-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Maciej Żenczykowski <maze@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>