skb: make skb_recycle_check() return a bool value

Signed-off-by: NChangli Gao <xiaosuo@gmail.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

include/linux/skbuff.h

@@ -501,7 +501,7 @@ static inline struct sk_buff *alloc_skb_fclone(unsigned int size,
 	return __alloc_skb(size, priority, 1, -1);
 }
 
-extern int skb_recycle_check(struct sk_buff *skb, int skb_size);
+extern bool skb_recycle_check(struct sk_buff *skb, int skb_size);
 
 extern struct sk_buff *skb_morph(struct sk_buff *dst, struct sk_buff *src);
 extern struct sk_buff *skb_clone(struct sk_buff *skb,

net/core/skbuff.c

@@ -482,22 +482,22 @@ EXPORT_SYMBOL(consume_skb);
  *	reference count dropping and cleans up the skbuff as if it
  *	just came from __alloc_skb().
  */
-int skb_recycle_check(struct sk_buff *skb, int skb_size)
+bool skb_recycle_check(struct sk_buff *skb, int skb_size)
 {
 	struct skb_shared_info *shinfo;
 
 	if (irqs_disabled())
-		return 0;
+		return false;
 
 	if (skb_is_nonlinear(skb) || skb->fclone != SKB_FCLONE_UNAVAILABLE)
-		return 0;
+		return false;
 
 	skb_size = SKB_DATA_ALIGN(skb_size + NET_SKB_PAD);
 	if (skb_end_pointer(skb) - skb->head < skb_size)
-		return 0;
+		return false;
 
 	if (skb_shared(skb) || skb_cloned(skb))
-		return 0;
+		return false;
 
 	skb_release_head_state(skb);
 
@@ -509,7 +509,7 @@ int skb_recycle_check(struct sk_buff *skb, int skb_size)
 	skb->data = skb->head + NET_SKB_PAD;
 	skb_reset_tail_pointer(skb);
 
-	return 1;
+	return true;
 }
 EXPORT_SYMBOL(skb_recycle_check);