Name
skb_clone_writable — 
     is the header of a clone writable
 
Synopsis
| int fsfuncskb_clone_writable ( | const struct sk_buff * skb, | 
|  | unsigned int len ); | 
 
Arguments
- skb
- 
     buffer to check
     
- len
- 
     length up to which to write
     
Description
   Returns true if modifying the header part of the cloned buffer
   does not requires the data to be copied.