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>

diff --git a/drivers/net/qlcnic/qlcnic_main.c b/drivers/net/qlcnic/qlcnic_main.c
index 9a3ebb8a820363150547d410a80a2bafcdfa0882..789fe817cfca1c55582e3236b042120d1531f1f8 100644 (file)
--- 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;
        }