net_sched: cls_flow: add key rxhash
We can use rxhash to classify the traffic into flows. As rxhash maybe supplied by NIC or RPS, it is cheaper. Signed-off-by: NChangli Gao <xiaosuo@gmail.com> Acked-by: NJamal Hadi Salim <hadi@cyberus.ca> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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