hfi1_txreq_from_idx
tx = hfi1_txreq_from_idx(tx_ring, i);
struct ipoib_txreq *tx = hfi1_txreq_from_idx(tx_ring, head);
tx = hfi1_txreq_from_idx(tx_ring, head);
tx = hfi1_txreq_from_idx(tx_ring, tail);
hfi1_txreq_from_idx(tx_ring, j)->sdma_hdr =
if (!hfi1_txreq_from_idx(tx_ring, j)->sdma_hdr)
kfree(hfi1_txreq_from_idx(tx_ring, j)->sdma_hdr);
kfree(hfi1_txreq_from_idx(tx_ring, j)->sdma_hdr);