From: hayeswang <hayeswang@realtek.com>
Date: Fri, 9 Jun 2017 09:11:47 +0000 (+0800)
Subject: r8152: avoid rx queue more than 1000 packets
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=745444583ab5c322def99907efa591860e38c75d;p=GitHub%2FLineageOS%2Fandroid_kernel_motorola_exynos9610.git

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 204f4b2155ae..fa2958393730 100644
--- 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;