From: Sergey Matyukevich <geomatsi@gmail.com>
Date: Mon, 14 Jun 2010 06:35:20 +0000 (+0000)
Subject: ucc_geth: fix for RX skb buffers recycling
X-Git-Url: http://git.cdn.openwrt.org/?a=commitdiff_plain;h=db176edc89abbf22e6db6853f8581f9475fe8ec1;p=openwrt%2Fstaging%2Fblogic.git

ucc_geth: fix for RX skb buffers recycling

This patch implements a proper modification of RX skb buffers before
recycling. Adjusting only skb->data is not enough because after that
skb->tail and skb->len become incorrect.

Signed-off-by: Sergey Matyukevich <geomatsi@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---

diff --git a/drivers/net/ucc_geth.c b/drivers/net/ucc_geth.c
index 4a34833b85dd..807470e156af 100644
--- a/drivers/net/ucc_geth.c
+++ b/drivers/net/ucc_geth.c
@@ -3215,6 +3215,8 @@ static int ucc_geth_rx(struct ucc_geth_private *ugeth, u8 rxQ, int rx_work_limit
 					   __func__, __LINE__, (u32) skb);
 			if (skb) {
 				skb->data = skb->head + NET_SKB_PAD;
+				skb->len = 0;
+				skb_reset_tail_pointer(skb);
 				__skb_queue_head(&ugeth->rx_recycle, skb);
 			}