1 files changed, 35 insertions, 1 deletions

diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h
index ee81906b5164..7c1d4466583b 100644
--- a/include/linux/netdevice.h
+++ b/include/linux/netdevice.h
@@ -710,8 +710,10 @@ struct net_device
         void                    (*poll_controller)(struct net_device *dev);
 #endif
 
+#ifdef CONFIG_NET_NS
         /* Network namespace this network device is inside */
         struct net              *nd_net;
+#endif
 
         /* bridge stuff */
         struct net_bridge_port  *br_port;
@@ -726,6 +728,10 @@ struct net_device
         /* rtnetlink link ops */
         const struct rtnl_link_ops *rtnl_link_ops;
 
+        /* for setting kernel sock attribute on TCP connection setup */
+#define GSO_MAX_SIZE            65536
+        unsigned int            gso_max_size;
+
         /* The TX queue control structures */
         unsigned int                    egress_subqueue_count;
         struct net_device_subqueue      egress_subqueue[1];
@@ -735,6 +741,28 @@ struct net_device
 #define NETDEV_ALIGN            32
 #define NETDEV_ALIGN_CONST      (NETDEV_ALIGN - 1)
 
+/*
+ * Net namespace inlines
+ */
+static inline
+struct net *dev_net(const struct net_device *dev)
+{
+#ifdef CONFIG_NET_NS
+        return dev->nd_net;
+#else
+        return &init_net;
+#endif
+}
+
+static inline
+void dev_net_set(struct net_device *dev, struct net *net)
+{
+#ifdef CONFIG_NET_NS
+        release_net(dev->nd_net);
+        dev->nd_net = hold_net(net);
+#endif
+}
+
 /**
  *      netdev_priv - access network device private data
  *      @dev: network device
@@ -811,7 +839,7 @@ static inline struct net_device *next_net_device(struct net_device *dev)
         struct list_head *lh;
         struct net *net;
 
-        net = dev->nd_net;
+        net = dev_net(dev);
         lh = dev->dev_list.next;
         return lh == &net->dev_base_head ? NULL : net_device_entry(lh);
 }
@@ -1479,6 +1507,12 @@ static inline int netif_needs_gso(struct net_device *dev, struct sk_buff *skb)
                 unlikely(skb->ip_summed != CHECKSUM_PARTIAL));
 }
 
+static inline void netif_set_gso_max_size(struct net_device *dev,
+                                          unsigned int size)
+{
+        dev->gso_max_size = size;
+}
+
 /* On bonding slaves other than the currently active slave, suppress
  * duplicates except for 802.3ad ETH_P_SLOW, alb non-mcast/bcast, and
  * ARP on active-backup slaves with arp_validate enabled.