[NET]: More likely/unlikely in skbuff.h

include/linux/skbuff.h

@@ -885,7 +885,7 @@ static inline char *__skb_pull(struct sk_buff *skb, unsigned int len)
  */
 static inline unsigned char *skb_pull(struct sk_buff *skb, unsigned int len)
 {
-	return (len > skb->len) ? NULL : __skb_pull(skb, len);
+	return unlikely(len > skb->len) ? NULL : __skb_pull(skb, len);
 }
 
 extern unsigned char *__pskb_pull_tail(struct sk_buff *skb, int delta);
@@ -901,7 +901,7 @@ static inline char *__pskb_pull(struct sk_buff *skb, unsigned int len)
 
 static inline unsigned char *pskb_pull(struct sk_buff *skb, unsigned int len)
 {
-	return (len > skb->len) ? NULL : __pskb_pull(skb, len);
+	return unlikely(len > skb->len) ? NULL : __pskb_pull(skb, len);
 }
 
 static inline int pskb_may_pull(struct sk_buff *skb, unsigned int len)
@@ -1052,7 +1052,7 @@ static inline struct sk_buff *__dev_alloc_skb(unsigned int length,
 					      int gfp_mask)
 {
 	struct sk_buff *skb = alloc_skb(length + 16, gfp_mask);
-	if (skb)
+	if (likely(skb))
 		skb_reserve(skb, 16);
 	return skb;
 }