* @adapter: board private structure

 *

 * the return value indicates if there is more work to do (later)

 **/

static bool e1000_clean_tx_irq(struct e1000_adapter *adapter)

{

	struct net_device *netdev = adapter->netdev;

	struct e1000_hw *hw = &adapter->hw;

	struct e1000_ring *tx_ring = adapter->tx_ring;

	struct e1000_tx_desc *tx_desc, *eop_desc;

	struct e1000_buffer *buffer_info;

	unsigned int i, eop;

	bool cleaned = 0, retval = 1;

	unsigned int total_tx_bytes = 0, total_tx_packets = 0;

	i = tx_ring->next_to_clean;

	eop = tx_ring->buffer_info[i].next_to_watch;

	eop_desc = E1000_TX_DESC(*tx_ring, eop);

	while (eop_desc->upper.data & cpu_to_le32(E1000_TXD_STAT_DD)) {

		for (cleaned = 0; !cleaned; ) {

			tx_desc = E1000_TX_DESC(*tx_ring, i);

			buffer_info = &tx_ring->buffer_info[i];

			cleaned = (i == eop);

			if (cleaned) {

				struct sk_buff *skb = buffer_info->skb;

#ifdef NETIF_F_TSO

				unsigned int segs, bytecount;

				segs = skb_shinfo(skb)->gso_segs ?: 1;

				/* multiply data chunks by size of headers */

				bytecount = ((segs - 1) * skb_headlen(skb)) +

					    skb->len;

				total_tx_packets += segs;

				total_tx_bytes += bytecount;

#else

				total_tx_packets++;

				total_tx_bytes += skb->len;

#endif

			}

			e1000_put_txbuf(adapter, buffer_info);

			tx_desc->upper.data = 0;

			i++;

			if (i == tx_ring->count)

				i = 0;

#ifdef CONFIG_E1000E_NAPI

			if (total_tx_packets >= tx_ring->count) {

				retval = 0;