before64
if (before64(rcv_wnd_new, rcv_wnd_old)) {
if (!before64(seq, MPTCP_SKB_CB(msk->ooo_last_skb)->end_seq)) {
if (before64(seq, MPTCP_SKB_CB(skb1)->map_seq)) {
if (before64(seq, MPTCP_SKB_CB(skb1)->end_seq)) {
if (before64(end_seq, MPTCP_SKB_CB(skb1)->end_seq))
#define after64(seq2, seq1) before64(seq1, seq2)
if (unlikely(before64(ack_seq, old_ack))) {