__pskb_copy - create copy of an sk_buff with private head.
2. SYNOPSIS ▲
struct sk_buff * __pskb_copy(struct sk_buff * skb , int headroom , gfp_t gfp_mask );
3. ARGUMENTS ▲
buffer to copy
headroom of new skb
4. DESCRIPTION ▲
Make a copy of both an sk_buff and part of its data, located in header. Fragmented data remain shared. This is used when the caller wishes to modify only header of sk_buff and needs private copy of the header to alter. Returns NULL on failure or the pointer to the buffer on success. The returned buffer has a reference count of 1.
5. COPYRIGHT ▲