--- zzzz-none-000/linux-2.6.39.4/include/net/ipv6.h	2011-08-03 19:43:28.000000000 +0000
+++ puma6-atom-6490-729/linux-2.6.39.4/include/net/ipv6.h	2021-11-10 13:38:18.000000000 +0000
@@ -34,6 +34,7 @@
 #define NEXTHDR_IPV6		41	/* IPv6 in IPv6 */
 #define NEXTHDR_ROUTING		43	/* Routing header. */
 #define NEXTHDR_FRAGMENT	44	/* Fragmentation/reassembly header. */
+#define NEXTHDR_GRE		47	/* GRE header. */
 #define NEXTHDR_ESP		50	/* Encapsulating security payload. */
 #define NEXTHDR_AUTH		51	/* Authentication header. */
 #define NEXTHDR_ICMP		58	/* ICMP for IPv6. */
@@ -521,6 +522,25 @@
 
 extern void			ip6_flush_pending_frames(struct sock *sk);
 
+extern int ip6_send_skb(struct sk_buff *skb);
+
+extern struct sk_buff *__ip6_make_skb(struct sock *sk, struct sk_buff_head *queue,
+			struct inet_cork *cork,
+			struct inet6_cork *v6_cork);
+extern struct sk_buff *ip6_make_skb(struct sock *sk,
+			int getfrag(void *from, char *to, int offset,
+				int len, int odd, struct sk_buff *skb),
+			void *from, int length, int transhdrlen,
+			int hlimit, int tclass, struct ipv6_txoptions *opt,
+			struct flowi6 *fl6, struct rt6_info *rt,
+			unsigned int flags, int dontfrag);
+
+static inline struct sk_buff *ip6_finish_skb(struct sock *sk)
+{
+	return __ip6_make_skb(sk, &sk->sk_write_queue, &inet_sk(sk)->cork,
+			&inet6_sk(sk)->cork);
+}
+
 extern int			ip6_dst_lookup(struct sock *sk,
 					       struct dst_entry **dst,
 					       struct flowi6 *fl6);