From: Rajesh Borundia <rajesh.borundia@qlogic.com>
Date: Tue, 31 Aug 2010 17:17:49 +0000 (+0000)
Subject: qlcnic: fix panic while using eth_hdr
X-Git-Tag: firefly_0821_release~7613^2~3670^2~612
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=dcb50afff747d15fc2ffff762c08c325e4c229e5;p=firefly-linux-kernel-4.4.55.git

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 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;
 	}