batman-adv: linearise the tt_response skb only if needed
The TT_RESPONSE skb has to be linearised only if the node plans to access the packet payload (so only if the message is directed to that node). In all the other cases the node can avoid this memory operation Signed-off-by:Antonio Quartulli <ordex@autistici.org> Signed-off-by:
Sven Eckelmann <sven@narfation.org>
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