ixgb: use rx copybreak/skb recycle (6b900bb4) · Commits · 戴 / test

drivers/net/ixgb/ixgb_main.c

+20 −0

Original line number	Diff line number	Diff line
		@@ -1990,6 +1990,26 @@ ixgb_clean_rx_irq(struct ixgb_adapter *adapter)
		goto rxdesc_done;
		}

		/* code added for copybreak, this should improve
		* performance for small packets with large amounts
		* of reassembly being done in the stack */
		#define IXGB_CB_LENGTH 256
		if (length < IXGB_CB_LENGTH) {
		struct sk_buff *new_skb =
		dev_alloc_skb(length + NET_IP_ALIGN);
		if (new_skb) {
		skb_reserve(new_skb, NET_IP_ALIGN);
		new_skb->dev = netdev;
		memcpy(new_skb->data - NET_IP_ALIGN,
		skb->data - NET_IP_ALIGN,
		length + NET_IP_ALIGN);
		/* save the skb in buffer_info as good */
		buffer_info->skb = skb;
		skb = new_skb;
		}
		}
		/* end copybreak code */

		/* Good Receive */
		skb_put(skb, length);