From: Kejian Yan <yankejian@huawei.com>
Date: Tue, 21 Jun 2016 03:56:23 +0000 (+0800)
Subject: net: hns: add skb_reset_mac_header() after skb being alloc
X-Git-Tag: Ubuntu-5.0.0-8.9~6810^2~292^2~16
X-Git-Url: https://git.proxmox.com/?a=commitdiff_plain;h=8379f0a8ea84f1a904e116b65751681a48a763ea;p=mirror_ubuntu-disco-kernel.git

net: hns: add skb_reset_mac_header() after skb being alloc

HNS receives a packet without doing anything, but it should call
skb_reset_mac_header() to initialize the header before using
eth_hdr().

Fixes: 0d6b425a3773c3445b0f51b2f333821beaacb619
Signed-off-by: Kejian Yan <yankejian@huawei.com>
Signed-off-by: Yisen Zhuang <Yisen.Zhuang@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---

diff --git a/drivers/net/ethernet/hisilicon/hns/hns_enet.c b/drivers/net/ethernet/hisilicon/hns/hns_enet.c
index ad742a6f5879..15200e4cd456 100644
--- a/drivers/net/ethernet/hisilicon/hns/hns_enet.c
+++ b/drivers/net/ethernet/hisilicon/hns/hns_enet.c
@@ -600,6 +600,7 @@ static int hns_nic_poll_rx_skb(struct hns_nic_ring_data *ring_data,
 		ring->stats.sw_err_cnt++;
 		return -ENOMEM;
 	}
+	skb_reset_mac_header(skb);
 
 	prefetchw(skb->data);
 	length = le16_to_cpu(desc->rx.pkt_len);