Merge branch 'master'

[sfrench/cifs-2.6.git] / include / linux / skbuff.h

diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h
index 4286d832166f1bf1d6a697d5063a48d60d502cca..fdfb8fe8c38ce0a6f38f342558b1858a5f6b5f60 100644 (file)
--- 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);