skb_peek — peek at the head of an sk_buff_head
struct sk_buff * skb_peek ( | const struct sk_buff_head * list_); |
Peek an sk_buff. Unlike most other operations you _MUST_ be careful with this one. A peek leaves the buffer on the list and someone else may run off with it. You must hold the appropriate locks or have a private queue to do this.
Returns NULL for an empty list or a pointer to the head element.
The reference count is not incremented and the reference is therefore
volatile. Use with caution.