scsi: fcoe: correct sending FIP VLAN packets on VLAN 0

The FIP VLAN frame consists of an ethernet header followed
by the FIP VLAN frame, so we need to skip the ethernet header
if we want to check the FIP opcode.

Signed-off-by: Hannes Reinecke <hare@suse.com>
Reviewed-by: Bart Van Assche <bart.vanassche@sandisk.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

drivers/scsi/fcoe/fcoe.c

@@ -590,7 +590,8 @@ static void fcoe_fip_send(struct fcoe_ctlr *fip, struct sk_buff *skb)
 	 * Use default VLAN for FIP VLAN discovery protocol
 	 */
 	frame = (struct fip_frame *)skb->data;
-	if (frame->fip.fip_op == ntohs(FIP_OP_VLAN) &&
+	if (ntohs(frame->eth.h_proto) == ETH_P_FIP &&
+	    ntohs(frame->fip.fip_op) == FIP_OP_VLAN &&
 	    fcoe->realdev != fcoe->netdev)
 		skb->dev = fcoe->realdev;
 	else