[NET]: uninline dev_alloc_skb, de-bloats a lot

[linux-2.6-omap-h63xx.git] / net / core / skbuff.c

diff --git a/net/core/skbuff.c b/net/core/skbuff.c
index 3402eca768f87d90514da8971632194fd4b3f47b..0daf5c0e5b8df62c915490ce3f42f66f5e31b00b 100644 (file)
--- a/net/core/skbuff.c
+++ b/net/core/skbuff.c
@@ -263,6 +263,24 @@ struct sk_buff *__netdev_alloc_skb(struct net_device *dev,
        return skb;
 }
 
+/**
+ *     dev_alloc_skb - allocate an skbuff for receiving
+ *     @length: length to allocate
+ *
+ *     Allocate a new &sk_buff and assign it a usage count of one. The
+ *     buffer has unspecified headroom built in. Users should allocate
+ *     the headroom they think they need without accounting for the
+ *     built in space. The built in space is used for optimisations.
+ *
+ *     %NULL is returned if there is no free memory. Although this function
+ *     allocates memory it can be called from an interrupt.
+ */
+struct sk_buff *dev_alloc_skb(unsigned int length)
+{
+       return __dev_alloc_skb(length, GFP_ATOMIC);
+}
+EXPORT_SYMBOL(dev_alloc_skb);
+
 static void skb_drop_list(struct sk_buff **listp)
 {
        struct sk_buff *list = *listp;
@@ -878,6 +896,22 @@ unsigned char *skb_put(struct sk_buff *skb, unsigned int len)
 }
 EXPORT_SYMBOL(skb_put);
 
+/**
+ *     skb_pull - remove data from the start of a buffer
+ *     @skb: buffer to use
+ *     @len: amount of data to remove
+ *
+ *     This function removes data from the start of a buffer, returning
+ *     the memory to the headroom. A pointer to the next data in the buffer
+ *     is returned. Once the data has been pulled future pushes will overwrite
+ *     the old data.
+ */
+unsigned char *skb_pull(struct sk_buff *skb, unsigned int len)
+{
+       return unlikely(len > skb->len) ? NULL : __skb_pull(skb, len);
+}
+EXPORT_SYMBOL(skb_pull);
+
 /* Trims skb to length len. It can change skb pointers.
  */