4 files changed, 19 insertions, 8 deletions

diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h
index 03cd7551a7a1..84b0f0d16fcb 100644
--- a/include/linux/netdevice.h
+++ b/include/linux/netdevice.h
@@ -315,6 +315,7 @@ struct net_device
 #define NETIF_F_GSO_SHIFT       16
 #define NETIF_F_TSO             (SKB_GSO_TCPV4 << NETIF_F_GSO_SHIFT)
 #define NETIF_F_UFO             (SKB_GSO_UDPV4 << NETIF_F_GSO_SHIFT)
+#define NETIF_F_GSO_ROBUST      (SKB_GSO_DODGY << NETIF_F_GSO_SHIFT)
 
 #define NETIF_F_GEN_CSUM        (NETIF_F_NO_CSUM | NETIF_F_HW_CSUM)
 #define NETIF_F_ALL_CSUM        (NETIF_F_IP_CSUM | NETIF_F_GEN_CSUM)
@@ -543,7 +544,8 @@ struct packet_type {
                                          struct net_device *,
                                          struct packet_type *,
                                          struct net_device *);
-        struct sk_buff          *(*gso_segment)(struct sk_buff *skb, int sg);
+        struct sk_buff          *(*gso_segment)(struct sk_buff *skb,
+                                                int features);
         void                    *af_packet_priv;
         struct list_head        list;
 };
@@ -968,7 +970,7 @@ extern int		netdev_max_backlog;
 extern int              weight_p;
 extern int              netdev_set_master(struct net_device *dev, struct net_device *master);
 extern int skb_checksum_help(struct sk_buff *skb, int inward);
-extern struct sk_buff *skb_gso_segment(struct sk_buff *skb, int sg);
+extern struct sk_buff *skb_gso_segment(struct sk_buff *skb, int features);
 #ifdef CONFIG_BUG
 extern void netdev_rx_csum_fault(struct net_device *dev);
 #else
@@ -988,11 +990,16 @@ extern void dev_seq_stop(struct seq_file *seq, void *v);
 
 extern void linkwatch_run_queue(void);
 
+static inline int skb_gso_ok(struct sk_buff *skb, int features)
+{
+        int feature = skb_shinfo(skb)->gso_size ?
+                      skb_shinfo(skb)->gso_type << NETIF_F_GSO_SHIFT : 0;
+        return (features & feature) != feature;
+}
+
 static inline int netif_needs_gso(struct net_device *dev, struct sk_buff *skb)
 {
-        int feature = skb_shinfo(skb)->gso_type << NETIF_F_GSO_SHIFT;
-        return skb_shinfo(skb)->gso_size &&
-               (dev->features & feature) != feature;
+        return skb_gso_ok(skb, dev->features);
 }
 
 #endif /* __KERNEL__ */
diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h
index 16eef03ce0eb..5fb72da7da03 100644
--- a/include/linux/skbuff.h
+++ b/include/linux/skbuff.h
@@ -172,6 +172,9 @@ enum {
 enum {
         SKB_GSO_TCPV4 = 1 << 0,
         SKB_GSO_UDPV4 = 1 << 1,
+
+        /* This indicates the skb is from an untrusted source. */
+        SKB_GSO_DODGY = 1 << 2,
 };
 
 /** 
@@ -1299,7 +1302,7 @@ extern void	       skb_split(struct sk_buff *skb,
                                  struct sk_buff *skb1, const u32 len);
 
 extern void            skb_release_data(struct sk_buff *skb);
-extern struct sk_buff *skb_segment(struct sk_buff *skb, int sg);
+extern struct sk_buff *skb_segment(struct sk_buff *skb, int features);
 
 static inline void *skb_header_pointer(const struct sk_buff *skb, int offset,
                                        int len, void *buffer)
diff --git a/include/net/protocol.h b/include/net/protocol.h
index 3b6dc15c68a5..40b6b9c9973f 100644
--- a/include/net/protocol.h
+++ b/include/net/protocol.h
@@ -36,7 +36,8 @@
 struct net_protocol {
         int                     (*handler)(struct sk_buff *skb);
         void                    (*err_handler)(struct sk_buff *skb, u32 info);
-        struct sk_buff         *(*gso_segment)(struct sk_buff *skb, int sg);
+        struct sk_buff         *(*gso_segment)(struct sk_buff *skb,
+                                               int features);
         int                     no_policy;
 };
 
diff --git a/include/net/tcp.h b/include/net/tcp.h
index ca3d38dfc00b..624921e76332 100644
--- a/include/net/tcp.h
+++ b/include/net/tcp.h
@@ -1086,7 +1086,7 @@ extern struct request_sock_ops tcp_request_sock_ops;
 
 extern int tcp_v4_destroy_sock(struct sock *sk);
 
-extern struct sk_buff *tcp_tso_segment(struct sk_buff *skb, int sg);
+extern struct sk_buff *tcp_tso_segment(struct sk_buff *skb, int features);
 
 #ifdef CONFIG_PROC_FS
 extern int  tcp4_proc_init(void);