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eae792b722
Devices or device layers can set this to control the queue selection performed by dev_pick_tx(). This function runs under RCU protection, which allows overriding functions to have some way of synchronizing with things like dynamic ->real_num_tx_queues adjustments. This makes the spinlock prefetch in dev_queue_xmit() a little bit less effective, but that's the price right now for correctness. Signed-off-by: David S. Miller <davem@davemloft.net>