mpls_pkt_too_big
EXPORT_SYMBOL_GPL(mpls_pkt_too_big);
if (mpls_pkt_too_big(skb, mtu - new_header_size))
bool mpls_pkt_too_big(const struct sk_buff *skb, unsigned int mtu);
if (mpls_pkt_too_big(skb, mtu - new_header_size))