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sk_buff: introduce pskb_network_may_pull()

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Signed-off-by: Changli Gao <xiaosuo@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Changli Gao 2010-08-04 04:43:44 +00:00 committed by David S. Miller
parent 36d12690a2
commit f9599ce111
1 changed files with 5 additions and 0 deletions
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5
include/linux/skbuff.h
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@ -1379,6 +1379,11 @@ static inline int skb_network_offset(const struct sk_buff *skb)
return skb_network_header(skb) - skb->data;
}
static inline int pskb_network_may_pull(struct sk_buff *skb, unsigned int len)
{
return pskb_may_pull(skb, skb_network_offset(skb) + len);
}
/*
* CPUs often take a performance hit when accessing unaligned memory
* locations. The actual performance hit varies, it can be small if the