From: Toshiaki Makita <makita.toshiaki@lab.ntt.co.jp>
Date: Fri, 3 Aug 2018 16:58:09 +0900
Subject: net: Export skb_headers_offset_update
Patch-mainline: v4.19-rc1
Git-commit: b0768a86585d4d951a30ff565f19598dbbd67897
References: bsc#1109837

This is needed for veth XDP which does skb_copy_expand()-like operation.

v2:
- Drop skb_copy_header part because it has already been exported now.

Signed-off-by: Toshiaki Makita <makita.toshiaki@lab.ntt.co.jp>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Thomas Bogendoerfer <tbogendoerfer@suse.de>
---
 include/linux/skbuff.h |    1 +
 net/core/skbuff.c      |    3 ++-
 2 files changed, 3 insertions(+), 1 deletion(-)

--- a/include/linux/skbuff.h
+++ b/include/linux/skbuff.h
@@ -959,6 +959,7 @@ static inline struct sk_buff *alloc_skb_
 }
 
 struct sk_buff *skb_morph(struct sk_buff *dst, struct sk_buff *src);
+void skb_headers_offset_update(struct sk_buff *skb, int off);
 int skb_copy_ubufs(struct sk_buff *skb, gfp_t gfp_mask);
 struct sk_buff *skb_clone(struct sk_buff *skb, gfp_t priority);
 void skb_copy_header(struct sk_buff *new, const struct sk_buff *old);
--- a/net/core/skbuff.c
+++ b/net/core/skbuff.c
@@ -1030,7 +1030,7 @@ struct sk_buff *skb_clone(struct sk_buff
 }
 EXPORT_SYMBOL(skb_clone);
 
-static void skb_headers_offset_update(struct sk_buff *skb, int off)
+void skb_headers_offset_update(struct sk_buff *skb, int off)
 {
 	/* Only adjust this if it actually is csum_start rather than csum */
 	if (skb->ip_summed == CHECKSUM_PARTIAL)
@@ -1044,6 +1044,7 @@ static void skb_headers_offset_update(st
 	skb->inner_network_header += off;
 	skb->inner_mac_header += off;
 }
+EXPORT_SYMBOL(skb_headers_offset_update);
 
 void skb_copy_header(struct sk_buff *new, const struct sk_buff *old)
 {