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Commit 249c8b42 authored by David S. Miller's avatar David S. Miller
Browse files

net: Add skb_queue_next(). 



A lot of code wants to iterate over an SKB queue at the top level using
it's own control structure and iterator scheme.

Provide skb_queue_next(), which is only valid to invoke if
skb_queue_is_last() returns false.

Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent d258b491

include/linux/skbuff.h

+18 −0
Original line number Diff line number Diff line
@@ -485,6 +485,24 @@ static inline bool skb_queue_is_last(const struct sk_buff_head *list, 
	return (skb->next == (struct sk_buff *) list);

}



/**

 *	skb_queue_next - return the next packet in the queue

 *	@list: queue head

 *	@skb: current buffer

 *

 *	Return the next packet in @list after @skb.  It is only valid to

 *	call this if skb_queue_is_last() evaluates to false.

 */

static inline struct sk_buff *skb_queue_next(const struct sk_buff_head *list,

					     const struct sk_buff *skb)

{

	/* This BUG_ON may seem severe, but if we just return then we

	 * are going to dereference garbage.

	 */

	BUG_ON(skb_queue_is_last(list, skb));

	return skb->next;

}



/**

 *	skb_get - reference buffer

 *	@skb: buffer to reference