NSHL
info->rx_count = NSHL;
skb_pull(info->rx_skb, NSHL);
info->rx_count = NSHL;
s = bt_skb_alloc(NSHL + skb->len + 1, GFP_ATOMIC);
skb_reserve(s, NSHL);
memcpy(skb_push(s, NSHL), &nsh, NSHL);
info->rx_count = NSHL;