EP_BUFFER_INFO_SIZE
page_count = buf_pair->tx.size / EP_BUFFER_INFO_SIZE;
(i * EP_BUFFER_INFO_SIZE);
page_count = buf_pair->rx.size / EP_BUFFER_INFO_SIZE;
(i * EP_BUFFER_INFO_SIZE);
u8 raw[EP_BUFFER_INFO_SIZE];
/ EP_BUFFER_INFO_SIZE) * EP_BUFFER_INFO_SIZE)
(24 + (8 * ((txb) / EP_BUFFER_INFO_SIZE + (rxb) / EP_BUFFER_INFO_SIZE)))