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net: Add skb_queue_walk_from() and skb_queue_walk_from_safe().

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These will be used by TCP write queue handling and elsewhere.

Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David S. Miller 2008-09-23 00:49:44 -07:00
parent 249c8b42c7
commit 1164f52a24
1 changed files with 9 additions and 0 deletions
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9
include/linux/skbuff.h
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@ -1571,6 +1571,15 @@ static inline int pskb_trim_rcsum(struct sk_buff *skb, unsigned int len)
skb != (struct sk_buff *)(queue); \
skb = tmp, tmp = skb->next)
#define skb_queue_walk_from(queue, skb) \
for (; prefetch(skb->next), (skb != (struct sk_buff *)(queue)); \
skb = skb->next)
#define skb_queue_walk_from_safe(queue, skb, tmp) \
for (tmp = skb->next; \
skb != (struct sk_buff *)(queue); \
skb = tmp, tmp = skb->next)
#define skb_queue_reverse_walk(queue, skb) \
for (skb = (queue)->prev; \
prefetch(skb->prev), (skb != (struct sk_buff *)(queue)); \