FM10K_ITR_MAX
if ((ec->rx_coalesce_usecs > FM10K_ITR_MAX) ||
(ec->tx_coalesce_usecs > FM10K_ITR_MAX))
itr |= (q_vector->tx.itr & FM10K_ITR_MAX);
itr |= (q_vector->rx.itr & FM10K_ITR_MAX) << FM10K_ITR_INTERVAL1_SHIFT;