tx_packet
tx_packet *desc = &priv->tx_ring[priv->tx_write];
tx_packet *desc = &priv->tx_ring[priv->tx_write];
tx_packet *desc = &priv->tx_ring[priv->tx_write];
tx_packet *tx_ring;
#define TX_RING_BUFFER_SIZE (TX_RING_ENTRIES*sizeof(tx_packet))