From: Changli Gao <xiaosuo@gmail.com>
Date: Wed, 4 Aug 2010 04:43:44 +0000 (+0000)
Subject: sk_buff: introduce pskb_network_may_pull()
X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=f9599ce11192f24dbb0f4fdb70121a05edc58342;p=openwrt%2Fstaging%2Fblogic.git

sk_buff: introduce pskb_network_may_pull()

Signed-off-by: Changli Gao <xiaosuo@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---

diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h
index d20d9e7a9bbd..77eb60d2b496 100644
--- 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