[NET]: uninline skb_trim, de-bloats

Allyesconfig (v2.6.24-mm1):
-10976  209 funcs, 123 +, 11099 -, diff: -10976 --- skb_trim

Without number of debug related CONFIGs (v2.6.25-rc2-mm1):
-7360  192 funcs, 131 +, 7491 -, diff: -7360 --- skb_trim
skb_trim                      |  +42

Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@helsinki.fi>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 16 insertions, 0 deletions

diff --git a/net/core/skbuff.c b/net/core/skbuff.c
index a37127b5899c..86e5682728be 100644
--- a/net/core/skbuff.c
+++ b/net/core/skbuff.c
@@ -931,6 +931,22 @@ unsigned char *skb_pull(struct sk_buff *skb, unsigned int len)
 }
 EXPORT_SYMBOL(skb_pull);
 
+/**
+ *      skb_trim - remove end from a buffer
+ *      @skb: buffer to alter
+ *      @len: new length
+ *
+ *      Cut the length of a buffer down by removing data from the tail. If
+ *      the buffer is already under the length specified it is not modified.
+ *      The skb must be linear.
+ */
+void skb_trim(struct sk_buff *skb, unsigned int len)
+{
+        if (skb->len > len)
+                __skb_trim(skb, len);
+}
+EXPORT_SYMBOL(skb_trim);
+
 /* Trims skb to length len. It can change skb pointers.
  */