--- zzzz-none-000/linux-3.10.107/include/linux/netlink.h	2017-06-27 09:49:32.000000000 +0000
+++ scorpion-7490-727/linux-3.10.107/include/linux/netlink.h	2021-02-04 17:41:59.000000000 +0000
@@ -28,6 +28,8 @@
 	__u32			dst_group;
 	__u32			flags;
 	struct sock		*sk;
+	bool			nsid_is_set;
+	int			nsid;
 };
 
 #define NETLINK_CB(skb)		(*(struct netlink_skb_parms*)&((skb)->cb))
@@ -46,7 +48,9 @@
 	unsigned int	flags;
 	void		(*input)(struct sk_buff *skb);
 	struct mutex	*cb_mutex;
-	void		(*bind)(int group);
+	int		(*bind)(struct net *net, int group);
+	void		(*unbind)(struct net *net, int group);
+	bool		(*compare)(struct net *net, struct sock *sk);
 };
 
 extern struct sock *__netlink_kernel_create(struct net *net, int unit,
@@ -62,11 +66,19 @@
 extern int __netlink_change_ngroups(struct sock *sk, unsigned int groups);
 extern int netlink_change_ngroups(struct sock *sk, unsigned int groups);
 extern void __netlink_clear_multicast_users(struct sock *sk, unsigned int group);
-extern void netlink_clear_multicast_users(struct sock *sk, unsigned int group);
 extern void netlink_ack(struct sk_buff *in_skb, struct nlmsghdr *nlh, int err);
 extern int netlink_has_listeners(struct sock *sk, unsigned int group);
-extern struct sk_buff *netlink_alloc_skb(struct sock *ssk, unsigned int size,
-					 u32 dst_portid, gfp_t gfp_mask);
+
+extern struct sk_buff *__netlink_alloc_skb(struct sock *ssk, unsigned int size,
+					   unsigned int ldiff, u32 dst_portid,
+					   gfp_t gfp_mask);
+static inline struct sk_buff *
+netlink_alloc_skb(struct sock *ssk, unsigned int size, u32 dst_portid,
+		  gfp_t gfp_mask)
+{
+	return __netlink_alloc_skb(ssk, size, 0, dst_portid, gfp_mask);
+}
+
 extern int netlink_unicast(struct sock *ssk, struct sk_buff *skb, __u32 portid, int nonblock);
 extern int netlink_broadcast(struct sock *ssk, struct sk_buff *skb, __u32 portid,
 			     __u32 group, gfp_t allocation);
@@ -85,6 +97,22 @@
 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
@@ -117,7 +145,7 @@
 
 struct netlink_notify {
 	struct net *net;
-	int portid;
+	u32 portid;
 	int protocol;
 };
 
@@ -145,6 +173,15 @@
 	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);
+
 bool __netlink_ns_capable(const struct netlink_skb_parms *nsp,
 			  struct user_namespace *ns, int cap);
 bool netlink_ns_capable(const struct sk_buff *skb,