__skb_try_recv_from_queue
struct sk_buff *__skb_try_recv_from_queue(struct sk_buff_head *queue,
skb = __skb_try_recv_from_queue(queue, flags, off, &error,
skb = __skb_try_recv_from_queue(queue, flags, off, err,
skb = __skb_try_recv_from_queue(queue, flags, off, err,