IGC_RING_FLAG_TX_DETECT_HANG
if (test_bit(IGC_RING_FLAG_TX_DETECT_HANG, &tx_ring->flags)) {
clear_bit(IGC_RING_FLAG_TX_DETECT_HANG, &tx_ring->flags);
set_bit(IGC_RING_FLAG_TX_DETECT_HANG, &tx_ring->flags);