macb_tx_ring_wrap
macb_tx_ring_wrap(bp, tail),
macb_tx_ring_wrap(bp, tail),
index = macb_tx_ring_wrap(queue->bp, index);
return &queue->tx_skb[macb_tx_ring_wrap(queue->bp, index)];
offset = macb_tx_ring_wrap(queue->bp, index) *
tbqp = macb_adj_dma_desc_idx(bp, macb_tx_ring_wrap(bp, tbqp));
head_idx = macb_adj_dma_desc_idx(bp, macb_tx_ring_wrap(bp, queue->tx_head));
if (unlikely(macb_tx_ring_wrap(bp, i) == bp->tx_ring_size - 1))
tail = macb_tx_ring_wrap(bp, bp->queues[0].tx_tail);
head = macb_tx_ring_wrap(bp, bp->queues[0].tx_head);