struct sk_buff *nskb = llc_alloc_frame();
struct sk_buff *nskb = llc_alloc_frame(skb->dev);
static int llc_station_ac_send_test_r(struct sk_buff *skb){	u8 mac_da[ETH_ALEN], dsap;	int rc = 1;	struct sk_buff *nskb = llc_alloc_frame();	if (!nskb)		goto out;	rc = 0;	nskb->dev = skb->dev;	llc_pdu_decode_sa(skb, mac_da);	llc_pdu_decode_ssap(skb, &dsap);	llc_pdu_header_init(nskb, LLC_PDU_TYPE_U, 0, dsap, LLC_PDU_RSP);       	llc_pdu_init_as_test_rsp(nskb, skb);	rc = llc_mac_hdr_init(nskb, llc_station_mac_sa, mac_da);	if (rc)		goto free;	llc_station_send_pdu(nskb);out:	return rc;free:	kfree_skb(skb);	goto out;}