 static void cdc_ncm_align_tail(struct sk_buff *skb, size_t modulus, size_t remainder, size_t max)
{
	size_t align = ALIGN(skb->len, modulus) - skb->len + remainder;

	if (skb->len + align > max)
		align = max - skb->len;
	if (align && skb_tailroom(skb) >= align)
		memset(skb_put(skb, align), 0, align);
}

Unknown