--- ../../../linux-2.6.29.4/drivers/net/usb/asix.c	2009-05-19 07:52:34.000000000 +0800
+++ asix.c	2009-06-10 10:15:17.000000000 +0800
@@ -354,6 +354,85 @@
 	return 1;
 }
 
+static struct sk_buff *
+ax88772_tx_gather (struct usbnet *dev, struct sk_buff_head *q,
+			size_t *actual_len)
+{
+	struct sk_buff		*skb = NULL, *skb_next = NULL;
+	int			pkt_cnt;
+	u16			pkt_size;
+	u32			skb_len = 0;
+
+	u32			packet_hdr;
+	u32			padbytes = 0xffff0000;
+	u8			padneeded = 0;
+	struct driver_info	*info = dev->driver_info;
+
+	pkt_cnt = skb_queue_len (q);
+
+	*actual_len = 0;
+	for (skb_next = q->next; skb_next != (struct sk_buff *) q;
+	     skb_next = skb_next->next){
+		*actual_len += skb_next->len;
+		pkt_size = (skb_next->len + 4 + 1) & 0xFFFE;
+		skb_len += pkt_size;
+	}
+
+	if ((skb_len % 512) == 0) {
+		skb_len += sizeof (padbytes);
+		padneeded = 1;
+	}
+
+	if (pkt_cnt > 1){
+
+		skb = dev_alloc_skb (skb_len); 
+
+		if (!skb){
+
+			while (pkt_cnt--) {
+				skb_next = __skb_dequeue(q);
+				dev_kfree_skb_any (skb_next);
+			}
+
+			devdbg (dev, "skb is NULL, len %d", skb_len);
+			return skb;
+		}
+
+		while (pkt_cnt--) {
+
+			skb_next = __skb_dequeue(q);
+
+			packet_hdr = ((skb_next->len ^ 0x0000ffff) << 16) +
+						skb_next->len;
+
+			le32_to_cpus(&packet_hdr);
+			memcpy (skb_put(skb, 4),  &packet_hdr, 4);
+			memcpy (skb_put(skb, skb_next->len),  skb_next->data,
+						skb_next->len);
+			if (skb->len & 1)
+				skb_put (skb, 1);
+			dev_kfree_skb_any (skb_next);
+		}
+
+		if (padneeded) {
+			memcpy (skb_put(skb, sizeof (padbytes)),
+					&padbytes, sizeof (padbytes));
+		}
+		
+	}else{ //only one packet to send
+		skb = __skb_dequeue(q);
+
+		skb = info->tx_fixup (dev, skb, GFP_ATOMIC);
+		if (!skb) {
+			if (netif_msg_tx_err (dev))
+				devdbg (dev, "can't tx_fixup skb");
+			return skb;
+		}
+	}
+
+	return skb;
+}
+
 static struct sk_buff *asix_tx_fixup(struct usbnet *dev, struct sk_buff *skb,
 					gfp_t flags)
 {
@@ -1011,6 +1090,7 @@
 		/* hard_mtu  is still the default - the device does not support
 		   jumbo eth frames */
 		dev->rx_urb_size = 2048;
+		dev->tx_threshold = 16384;
 	}
 	return 0;
 
@@ -1281,6 +1361,7 @@
 		/* hard_mtu  is still the default - the device does not support
 		   jumbo eth frames */
 		dev->rx_urb_size = 2048;
+		dev->tx_threshold = 16384;
 	}
 	return 0;
 
@@ -1337,6 +1418,7 @@
 	.flags = FLAG_ETHER | FLAG_FRAMING_AX,
 	.rx_fixup = asix_rx_fixup,
 	.tx_fixup = asix_tx_fixup,
+	.tx_gather = ax88772_tx_gather,
 };
 
 static const struct driver_info ax88178_info = {
@@ -1348,6 +1430,7 @@
 	.flags = FLAG_ETHER | FLAG_FRAMING_AX,
 	.rx_fixup = asix_rx_fixup,
 	.tx_fixup = asix_tx_fixup,
+	.tx_gather = ax88772_tx_gather,
 };
 
 static const struct usb_device_id	products [] = {