--- zzzz-none-000/linux-3.10.107/include/linux/tcp.h	2017-06-27 09:49:32.000000000 +0000
+++ vr9-7490-729/linux-3.10.107/include/linux/tcp.h	2021-11-10 11:53:56.000000000 +0000
@@ -135,7 +135,7 @@
 	/* inet_connection_sock has to be the first member of tcp_sock */
 	struct inet_connection_sock	inet_conn;
 	u16	tcp_header_len;	/* Bytes of tcp header to send		*/
-	u16	xmit_size_goal_segs; /* Goal for segmenting output packets */
+	u16	gso_segs;	/* Max number of segs per GSO packet	*/
 
 /*
  *	Header prediction flags
@@ -389,4 +389,7 @@
 	return 0;
 }
 
+int tcp_skb_shift(struct sk_buff *to, struct sk_buff *from, int pcount,
+		  int shiftlen);
+
 #endif	/* _LINUX_TCP_H */