IGB_FLAG_QUEUE_PAIRS
if ((adapter->flags & IGB_FLAG_QUEUE_PAIRS) && ec->tx_coalesce_usecs)
if (adapter->flags & IGB_FLAG_QUEUE_PAIRS)
if (!(adapter->flags & IGB_FLAG_QUEUE_PAIRS)) {
if (!(adapter->flags & IGB_FLAG_QUEUE_PAIRS))
adapter->flags |= IGB_FLAG_QUEUE_PAIRS;
adapter->flags |= IGB_FLAG_QUEUE_PAIRS;
adapter->flags &= ~IGB_FLAG_QUEUE_PAIRS;