Name
skb_unshare -- make a copy of a shared buffer
Synopsis
struct sk_buff * skb_unshare (struct sk_buff * skb, int pri);
Arguments
- skb
buffer to check
- pri
priority for memory allocation
Description
If the socket buffer is a clone then this function creates a new
copy of the data, drops a reference count on the old copy and returns
the new copy with the reference count at 1. If the buffer is not a clone
the original buffer is returned. When called with a spinlock held or
from interrupt state pri must be GFP_ATOMIC
NULL is returned on a memory allocation failure.