From 5583834362f5a9050e701e324f6a9b4d7bf5fcdf Mon Sep 17 00:00:00 2001
From: Sam Shih <sam.shih@mediatek.com>
Date: Fri, 2 Jun 2023 13:06:29 +0800
Subject: [PATCH] 
 [networking][999-2707-mtkhnat-ipv6-fix-pskb-expand-head-limitation.patch]

---
 net/core/skbuff.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/net/core/skbuff.c b/net/core/skbuff.c
index 409f33e16..d91b2dfe2 100644
--- a/net/core/skbuff.c
+++ b/net/core/skbuff.c
@@ -69,6 +69,7 @@
 #include <net/ip6_checksum.h>
 #include <net/xfrm.h>
 #include <net/mpls.h>
+#include <net/ra_nat.h>
 
 #include <linux/uaccess.h>
 #include <trace/events/skb.h>
@@ -1666,6 +1667,9 @@ int pskb_expand_head(struct sk_buff *skb, int nhead, int ntail,
 	       skb_shinfo(skb),
 	       offsetof(struct skb_shared_info, frags[skb_shinfo(skb)->nr_frags]));
 
+	/*headroom copy*/
+	memcpy(data, skb->head, FOE_INFO_LEN);
+
 	/*
 	 * if shinfo is shared we must drop the old head gracefully, but if it
 	 * is not we can just drop the old head and let the existing refcount
-- 
2.34.1