[SCSI] net: add FCoE offload support through net_device

This adds support to provide Fiber Channel over Ethernet (FCoE) offload
through net_device's net_device_ops struct. The offload through net_device
for FCoE is enabled in kernel as built-in or module driver.

Signed-off-by: Yi Zou <yi.zou@intel.com>
Acked-by: David Miller <davem@davemloft.net>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>

diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h
index 5c40557..7ed49f5 100644 (file)
--- a/include/linux/netdevice.h
+++ b/include/linux/netdevice.h
@@ -582,6 +582,14 @@ struct net_device_ops {
 #define HAVE_NETDEV_POLL
        void                    (*ndo_poll_controller)(struct net_device *dev);
 #endif
+#if defined(CONFIG_FCOE) || defined(CONFIG_FCOE_MODULE)
+       int                     (*ndo_fcoe_ddp_setup)(struct net_device *dev,
+                                                     u16 xid,
+                                                     struct scatterlist *sgl,
+                                                     unsigned int sgc);
+       int                     (*ndo_fcoe_ddp_done)(struct net_device *dev,
+                                                    u16 xid);
+#endif
 };
 
 /*
@@ -843,6 +851,11 @@ struct net_device
        struct dcbnl_rtnl_ops *dcbnl_ops;
 #endif
 
+#if defined(CONFIG_FCOE) || defined(CONFIG_FCOE_MODULE)
+       /* max exchange id for FCoE LRO by ddp */
+       unsigned int            fcoe_ddp_xid;
+#endif
+
 #ifdef CONFIG_COMPAT_NET_DEV_OPS
        struct {
                int                     (*init)(struct net_device *dev);