r8152: avoid rx queue more than 1000 packets

Stop queuing rx packets if it is more than 1000.

Signed-off-by: Hayes Wang <hayeswang@realtek.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/usb/r8152.c b/drivers/net/usb/r8152.c
index 204f4b2155ae0db3fbb67660a7bf92794ca0fdd0..fa29583937304a9f59487a5b62c68d3e8a925674 100644 (file)
--- a/drivers/net/usb/r8152.c
+++ b/drivers/net/usb/r8152.c
@@ -1813,6 +1813,10 @@ static int rx_bottom(struct r8152 *tp, int budget)
                        unsigned int pkt_len;
                        struct sk_buff *skb;
 
+                       /* limite the skb numbers for rx_queue */
+                       if (unlikely(skb_queue_len(&tp->rx_queue) >= 1000))
+                               break;
+
                        pkt_len = le32_to_cpu(rx_desc->opts1) & RX_LEN_MASK;
                        if (pkt_len < ETH_ZLEN)
                                break;