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sk_buff: introduce pskb_network_may_pull()
author
Changli Gao
<xiaosuo@gmail.com>
Wed, 4 Aug 2010 04:43:44 +0000
(
04:43
+0000)
committer
David S. Miller
<davem@davemloft.net>
Thu, 5 Aug 2010 04:53:14 +0000
(21:53 -0700)
Signed-off-by: Changli Gao <xiaosuo@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
include/linux/skbuff.h
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diff --git
a/include/linux/skbuff.h
b/include/linux/skbuff.h
index
d20d9e7
..
77eb60d
100644
(file)
--- a/
include/linux/skbuff.h
+++ b/
include/linux/skbuff.h
@@
-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