X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=include%2Flinux%2Fskbuff.h;h=fdfb8fe8c38ce0a6f38f342558b1858a5f6b5f60;hb=89de09a9ba9ce293228b1f1aa3c68b5af33a70ce;hp=4286d832166f1bf1d6a697d5063a48d60d502cca;hpb=596c96ba06e5d56e72451e02f93f4e15e17458df;p=linux-2.6

diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h
index 4286d83216..fdfb8fe8c3 100644
--- a/include/linux/skbuff.h
+++ b/include/linux/skbuff.h
@@ -603,29 +603,46 @@ static inline void skb_queue_head_init(struct sk_buff_head *list)
  */
 
 /**
- *	__skb_queue_head - queue a buffer at the list head
+ *	__skb_queue_after - queue a buffer at the list head
  *	@list: list to use
+ *	@prev: place after this buffer
  *	@newsk: buffer to queue
  *
- *	Queue a buffer at the start of a list. This function takes no locks
+ *	Queue a buffer int the middle of a list. This function takes no locks
  *	and you must therefore hold required locks before calling it.
  *
  *	A buffer cannot be placed on two lists at the same time.
  */
-extern void skb_queue_head(struct sk_buff_head *list, struct sk_buff *newsk);
-static inline void __skb_queue_head(struct sk_buff_head *list,
-				    struct sk_buff *newsk)
+static inline void __skb_queue_after(struct sk_buff_head *list,
+				     struct sk_buff *prev,
+				     struct sk_buff *newsk)
 {
-	struct sk_buff *prev, *next;
-
+	struct sk_buff *next;
 	list->qlen++;
-	prev = (struct sk_buff *)list;
+
 	next = prev->next;
 	newsk->next = next;
 	newsk->prev = prev;
 	next->prev  = prev->next = newsk;
 }
 
+/**
+ *	__skb_queue_head - queue a buffer at the list head
+ *	@list: list to use
+ *	@newsk: buffer to queue
+ *
+ *	Queue a buffer at the start of a list. This function takes no locks
+ *	and you must therefore hold required locks before calling it.
+ *
+ *	A buffer cannot be placed on two lists at the same time.
+ */
+extern void skb_queue_head(struct sk_buff_head *list, struct sk_buff *newsk);
+static inline void __skb_queue_head(struct sk_buff_head *list,
+				    struct sk_buff *newsk)
+{
+	__skb_queue_after(list, (struct sk_buff *)list, newsk);
+}
+
 /**
  *	__skb_queue_tail - queue a buffer at the list tail
  *	@list: list to use
@@ -1203,6 +1220,11 @@ static inline void kunmap_skb_frag(void *vaddr)
 		     prefetch(skb->next), (skb != (struct sk_buff *)(queue));	\
 		     skb = skb->next)
 
+#define skb_queue_reverse_walk(queue, skb) \
+		for (skb = (queue)->prev;					\
+		     prefetch(skb->prev), (skb != (struct sk_buff *)(queue));	\
+		     skb = skb->prev)
+
 
 extern struct sk_buff *skb_recv_datagram(struct sock *sk, unsigned flags,
 					 int noblock, int *err);