net: 3com: replace dev_kfree_skb_irq by dev_consume_skb_irq for drop profiles

dev_consume_skb_irq() should be called when skb xmit done. It makes
drop profiles(dropwatch, perf) more friendly.
Signed-off-by: Yang Wei <yang.wei9@zte.com.cn>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/3com/3c515.c

@@ -1177,7 +1177,7 @@ static irqreturn_t corkscrew_interrupt(int irq, void *dev_id)
 				if (inl(ioaddr + DownListPtr) == isa_virt_to_bus(&lp->tx_ring[entry]))
 					break;	/* It still hasn't been processed. */
 				if (lp->tx_skbuff[entry]) {
-					dev_kfree_skb_irq(lp->tx_skbuff[entry]);
+					dev_consume_skb_irq(lp->tx_skbuff[entry]);
 					lp->tx_skbuff[entry] = NULL;
 				}
 				dirty_tx++;
@@ -1192,7 +1192,7 @@ static irqreturn_t corkscrew_interrupt(int irq, void *dev_id)
 #ifdef VORTEX_BUS_MASTER
 		if (status & DMADone) {
 			outw(0x1000, ioaddr + Wn7_MasterStatus);	/* Ack the event. */
-			dev_kfree_skb_irq(lp->tx_skb);	/* Release the transferred buffer */
+			dev_consume_skb_irq(lp->tx_skb);	/* Release the transferred buffer */
 			netif_wake_queue(dev);
 		}
 #endif

drivers/net/ethernet/3com/3c59x.c

@@ -2307,7 +2307,7 @@ _vortex_interrupt(int irq, struct net_device *dev)
 				dma_unmap_single(vp->gendev, vp->tx_skb_dma, (vp->tx_skb->len + 3) & ~3, DMA_TO_DEVICE);
 				pkts_compl++;
 				bytes_compl += vp->tx_skb->len;
-				dev_kfree_skb_irq(vp->tx_skb); /* Release the transferred buffer */
+				dev_consume_skb_irq(vp->tx_skb); /* Release the transferred buffer */
 				if (ioread16(ioaddr + TxFree) > 1536) {
 					/*
 					 * AKPM: FIXME: I don't think we need this.  If the queue was stopped due to
@@ -2449,7 +2449,7 @@ _boomerang_interrupt(int irq, struct net_device *dev)
 #endif
 					pkts_compl++;
 					bytes_compl += skb->len;
-					dev_kfree_skb_irq(skb);
+					dev_consume_skb_irq(skb);
 					vp->tx_skbuff[entry] = NULL;
 				} else {
 					pr_debug("boomerang_interrupt: no skb!\n");