rt2x00queue_alloc_rxskb
skb = rt2x00queue_alloc_rxskb(entry, gfp);
struct sk_buff *rt2x00queue_alloc_rxskb(struct queue_entry *entry, gfp_t gfp);
skb = rt2x00queue_alloc_rxskb(&queue->entries[i], GFP_KERNEL);