struct sk_buff *llc_alloc_frame(void)
struct sk_buff *llc_alloc_frame(struct net_device *dev)
struct sk_buff *llc_alloc_frame(void){	struct sk_buff *skb = alloc_skb(128, GFP_ATOMIC);	if (skb) {		skb_reserve(skb, 50);		skb->nh.raw   = skb->h.raw = skb->data;		skb->protocol = htons(ETH_P_802_2);		skb->dev      = dev_base->next;		skb->mac.raw  = skb->head;	}	return skb;}