sxgbe_tx_avail
if (unlikely(sxgbe_tx_avail(tqueue, tx_rsize) < nr_frags + 1)) {
if (unlikely(sxgbe_tx_avail(tqueue, tx_rsize) <= (MAX_SKB_FRAGS + 1))) {
sxgbe_tx_avail(tqueue, tx_rsize) > SXGBE_TX_THRESH(priv))) {