qlcnic: fix panic while using eth_hdr

o skb->mac_header is not set, so machine panics while using function eth_hdr.

Signed-off-by: Rajesh Borundia <rajesh.borundia@qlogic.com>
Signed-off-by: Amit Kumar Salecha <amit.salecha@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 3 insertions, 1 deletions

diff --git a/drivers/net/qlcnic/qlcnic_main.c b/drivers/net/qlcnic/qlcnic_main.c
index 9a3ebb8a8203..789fe817cfca 100644
--- a/drivers/net/qlcnic/qlcnic_main.c
+++ b/drivers/net/qlcnic/qlcnic_main.c
@@ -1991,6 +1991,7 @@ qlcnic_xmit_frame(struct sk_buff *skb, struct net_device *netdev)
         struct qlcnic_skb_frag *buffrag;
         struct cmd_desc_type0 *hwdesc, *first_desc;
         struct pci_dev *pdev;
+        struct ethhdr *phdr;
         int i, k;
 
         u32 producer;
@@ -2003,7 +2004,8 @@ qlcnic_xmit_frame(struct sk_buff *skb, struct net_device *netdev)
         }
 
         if (adapter->flags & QLCNIC_MACSPOOF) {
-                if (compare_ether_addr(eth_hdr(skb)->h_source,
+                phdr = (struct ethhdr *)skb->data;
+                if (compare_ether_addr(phdr->h_source,
                                         adapter->mac_addr))
                         goto drop_packet;
         }