1 files changed, 27 insertions, 0 deletions

diff --git a/include/linux/netlink.h b/include/linux/netlink.h
index 6358da5eeee8..7a6c396a263b 100644
--- a/include/linux/netlink.h
+++ b/include/linux/netlink.h
@@ -46,6 +46,7 @@ struct netlink_kernel_cfg {
         void            (*input)(struct sk_buff *skb);
         struct mutex    *cb_mutex;
         void            (*bind)(int group);
+        bool            (*compare)(struct net *net, struct sock *sk);
 };
 
 extern struct sock *__netlink_kernel_create(struct net *net, int unit,
@@ -84,6 +85,22 @@ int netlink_attachskb(struct sock *sk, struct sk_buff *skb,
 void netlink_detachskb(struct sock *sk, struct sk_buff *skb);
 int netlink_sendskb(struct sock *sk, struct sk_buff *skb);
 
+static inline struct sk_buff *
+netlink_skb_clone(struct sk_buff *skb, gfp_t gfp_mask)
+{
+        struct sk_buff *nskb;
+
+        nskb = skb_clone(skb, gfp_mask);
+        if (!nskb)
+                return NULL;
+
+        /* This is a large skb, set destructor callback to release head */
+        if (is_vmalloc_addr(skb->head))
+                nskb->destructor = skb->destructor;
+
+        return nskb;
+}
+
 /*
  *      skb should fit one page. This choice is good for headerless malloc.
  *      But we should limit to 8K so that userspace does not have to
@@ -144,4 +161,14 @@ static inline int netlink_dump_start(struct sock *ssk, struct sk_buff *skb,
         return __netlink_dump_start(ssk, skb, nlh, control);
 }
 
+struct netlink_tap {
+        struct net_device *dev;
+        struct module *module;
+        struct list_head list;
+};
+
+extern int netlink_add_tap(struct netlink_tap *nt);
+extern int __netlink_remove_tap(struct netlink_tap *nt);
+extern int netlink_remove_tap(struct netlink_tap *nt);
+
 #endif  /* __LINUX_NETLINK_H */