mptcp_incoming_options
bool mptcp_incoming_options(struct sock *sk, struct sk_buff *skb);
mptcp_incoming_options(sk, skb);
if (sk_is_mptcp(sk) && !mptcp_incoming_options(sk, skb)) {
if (sk_is_mptcp(sk) && !mptcp_incoming_options(sk, skb))