IWX_RX_QUEUE_CB_SIZE
cb_size = IWX_RX_QUEUE_CB_SIZE(IWX_MQ_RX_TABLE_SIZE);
KASSERT(IWX_RX_QUEUE_CB_SIZE(IWX_MQ_RX_TABLE_SIZE) < 0xF);
(IWX_RX_QUEUE_CB_SIZE(IWX_MQ_RX_TABLE_SIZE) <<
#define IWX_TFD_QUEUE_CB_SIZE(x) (IWX_RX_QUEUE_CB_SIZE(x) - 3)