Provided by: linux-doc-2.6.15_2.6.15-23.39_all bug


       skb_copy - create private copy of an sk_buff


       struct sk_buff * skb_copy  (const struct sk_buff * skb,
                                      gfp_t gfp_mask);


       skb    buffer to copy

              allocation priority


       Make a copy of both an &sk_buff and its data. This  is  used  when  the
       caller  wishes  to modify the data and needs a private copy of the data
       to alter. Returns NULL on failure or  the  pointer  to  the  buffer  on
       success. The returned buffer has a reference count of 1.

       As by-product this function converts non-linear &sk_buff to linear one,
       so that &sk_buff becomes completely private and caller  is  allowed  to
       modify  all  the data of returned buffer. This means that this function
       is not recommended for use in circumstances when only header  is  going
       to be modified. Use pskb_copy instead.