TRANSPORT_OFFSET
*offset = *l4_len + TRANSPORT_OFFSET(l4->hdr, skb);
*offset = TRANSPORT_OFFSET(l4->hdr, skb);
*offset = TRANSPORT_OFFSET(l4->hdr, skb);
TRANSPORT_OFFSET(l4->hdr, skb);
*offset = TRANSPORT_OFFSET(l4->hdr, skb);