ixgbe: Implement FCoE Rx side large receive offload feature to 82599

This patch implements the FCoE Rx side offload feature in ixgbe_main.c
to 82599 using the Rx offload infrastructure code added in the previous
patch. The large receive offload by Direct Data Placement (DDP) for
FCoE is achieved by implementing the ndo_fcoe_ddp_setup and ndo_fcoe_ddp_done
in net_device_ops via netdev. It is up to the ULD, i.e., fcoe and libfc
to query and setup large receive offload accordingly through the corresponding
netdev upon creating fcoe instances.

Signed-off-by: Yi Zou <yi.zou@intel.com>
Acked-by: Peter P Waskiewicz Jr <peter.p.waskiewicz.jr@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/ixgbe/ixgbe.h b/drivers/net/ixgbe/ixgbe.h
index 5581fa3..db6d3ea 100644
--- a/drivers/net/ixgbe/ixgbe.h
+++ b/drivers/net/ixgbe/ixgbe.h
@@ -386,6 +386,13 @@
 extern int ixgbe_fso(struct ixgbe_adapter *adapter,
                      struct ixgbe_ring *tx_ring, struct sk_buff *skb,
                      u32 tx_flags, u8 *hdr_len);
+extern void ixgbe_cleanup_fcoe(struct ixgbe_adapter *adapter);
+extern int ixgbe_fcoe_ddp(struct ixgbe_adapter *adapter,
+                          union ixgbe_adv_rx_desc *rx_desc,
+                          struct sk_buff *skb);
+extern int ixgbe_fcoe_ddp_get(struct net_device *netdev, u16 xid,
+                              struct scatterlist *sgl, unsigned int sgc);
+extern int ixgbe_fcoe_ddp_put(struct net_device *netdev, u16 xid);
 #endif /* IXGBE_FCOE */
 
 #endif /* _IXGBE_H_ */