COALESCE_TIMER_CFG_UNIT
#define COALESCE_MAX_TIMER_CFG (255 * COALESCE_TIMER_CFG_UNIT)
COALESCE_TIMER_CFG_UNIT;
COALESCE_TIMER_CFG_UNIT;
(u8)(coal->rx_coalesce_usecs / COALESCE_TIMER_CFG_UNIT);
(u8)(coal->tx_coalesce_usecs / COALESCE_TIMER_CFG_UNIT);