1. NAME▲

skb_share_check - check if buffer is shared and if so clone it

2. SYNOPSIS ▲

struct sk_buff * skb_share_check(struct sk_buff *  skb , gfp_t  pri );

3. ARGUMENTS ▲

skb
    buffer to check

pri
    priority for memory allocation

4. DESCRIPTION ▲

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.

5. COPYRIGHT ▲