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Index: linux-3.10.14/net/nat/hw_nat/ra_nat.h
===================================================================
--- linux-3.10.14.orig/net/nat/hw_nat/ra_nat.h
+++ linux-3.10.14/net/nat/hw_nat/ra_nat.h
@@ -223,18 +223,12 @@ typedef struct {
#define FOE_MAGIC_PPE 0x7276
/* choose one of them to keep HNAT related information in somewhere. */
-#if defined (CONFIG_SUPPORT_OPENWRT)
-//#define HNAT_USE_HEADROOM
-//#define HNAT_USE_TAILROOM
-#define HNAT_USE_SKB_CB
-#else
//#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,5,0)) && defined (CONFIG_MT7621_ASIC)
//#define HNAT_USE_TAILROOM
//#else
#define HNAT_USE_HEADROOM
//#endif
//#define HNAT_USE_SKB_CB
-#endif
#if defined (HNAT_USE_HEADROOM)
#define IS_SPACE_AVAILABLED(skb) ((skb_headroom(skb) >= FOE_INFO_LEN) ? 1 : 0)
@@ -287,7 +281,7 @@ typedef struct {
#elif defined (HNAT_USE_SKB_CB)
//change the position of skb_CB if necessary
-#define CB_OFFSET 32
+#define CB_OFFSET 42
#define IS_SPACE_AVAILABLED(skb) 1
#define FOE_INFO_START_ADDR(skb) (skb->cb + CB_OFFSET)
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