net: sgi: 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/sgi/ioc3-eth.c

@@ -666,7 +666,7 @@ static inline void ioc3_tx(struct net_device *dev)
 		packets++;
 		skb = ip->tx_skbs[o_entry];
 		bytes += skb->len;
-		dev_kfree_skb_irq(skb);
+		dev_consume_skb_irq(skb);
 		ip->tx_skbs[o_entry] = NULL;
 
 		o_entry = (o_entry + 1) & 127;		/* Next */

drivers/net/ethernet/sgi/meth.c

@@ -525,7 +525,7 @@ static void meth_tx_cleanup(struct net_device* dev, unsigned long int_status)
 			DPRINTK("RPTR points us here, but packet not done?\n");
 			break;
 		}
-		dev_kfree_skb_irq(skb);
+		dev_consume_skb_irq(skb);
 		priv->tx_skbs[priv->tx_read] = NULL;
 		priv->tx_ring[priv->tx_read].header.raw = 0;
 		priv->tx_read = (priv->tx_read+1)&(TX_RING_ENTRIES-1);