Provided by: linux-doc-2.6.15_2.6.15-23.39_all
skb_share_check - check if buffer is shared and if so clone it
struct sk_buff * skb_share_check (struct sk_buff * skb, gfp_t pri);
skb buffer to check
pri priority for memory allocation
If the buffer is shared the buffer is cloned and the old copy drops a
reference. A new clone with a single reference is returned. If the
buffer is not shared the original buffer is returned. When being called
from interrupt status or with spinlocks held pri must be GFP_ATOMIC.
NULL is returned on a memory allocation failure.