net: Add skb_queue_is_last().
Several bits of code want to know "is this the last SKB in a queue", and all of them implement this by hand. Provide an common interface to make this check. Signed-off-by: David S. Miller <davem@davemloft.net>
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@ -472,6 +472,19 @@ static inline int skb_queue_empty(const struct sk_buff_head *list)
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return list->next == (struct sk_buff *)list;
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return list->next == (struct sk_buff *)list;
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}
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}
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/**
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* skb_queue_is_last - check if skb is the last entry in the queue
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* @list: queue head
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* @skb: buffer
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*
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* Returns true if @skb is the last buffer on the list.
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*/
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static inline bool skb_queue_is_last(const struct sk_buff_head *list,
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const struct sk_buff *skb)
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{
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return (skb->next == (struct sk_buff *) list);
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}
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/**
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/**
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* skb_get - reference buffer
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* skb_get - reference buffer
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* @skb: buffer to reference
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* @skb: buffer to reference
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