tcf_mpls_get_lse
new_lse = tcf_mpls_get_lse(NULL, p, mac_len ||
new_lse = tcf_mpls_get_lse(mpls_hdr(skb), p, false);
new_lse = tcf_mpls_get_lse(NULL, p, !eth_p_mpls(skb_protocol(skb, true)));