fec_enet_get_free_txdesc_num
free_bds = fec_enet_get_free_txdesc_num(txq);
entries_free = fec_enet_get_free_txdesc_num(txq);
if (!fec_enet_get_free_txdesc_num(txq)) {
entries_free = fec_enet_get_free_txdesc_num(txq);
entries_free = fec_enet_get_free_txdesc_num(txq);
if (tso_count_descs(skb) >= fec_enet_get_free_txdesc_num(txq)) {
entries_free = fec_enet_get_free_txdesc_num(txq);