td_length
int len = td_length(td);
#define td_actual_bytes(td) (td_length(td) - td_residue(td))
dev_dbg(dev, "data: %*ph\n", td_length(td), td->data);
u32 td_length;
td_length = cdnsp_sum_trb_lengths(pdev, ep_ring, ep_trb);
td_length += ep_trb_len - remaining;
td_length = requested;
td->preq->request.actual += td_length;
u16 td_length;
td_length = in_be16(&td->length);
pkt->len > td_length - CRC_SIZE) {
pkt->len = td_length - CRC_SIZE;
pkt->len = td_length;