__skb_queue_purge_reason
__skb_queue_purge_reason(list, SKB_DROP_REASON_QUEUE_PURGE);
__skb_queue_purge_reason(&list, SKB_DROP_REASON_DEV_READY);
__skb_queue_purge_reason(&tmp, reason);
__skb_queue_purge_reason(&hitlist, SKB_DROP_REASON_SOCKET_CLOSE);